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WORLD METEOROLOGICAL ORGANIZATION

REGIONAL ASSOCIATION VI (EUROPE)

ABRIDGED FINAL REPORT

OF THE

FIRST SESSION

Zurich, 26th May - 8 th June, 1952

PRICE: Sw. fro 3.-

WMO - N 11. RP. 3

Secretariat of the World Meteorological Organization - Geneva - Switzerland

1. List of Persons attending the First Session of Regional l~ssociation VI .--------------------------------- --~ 5

2. Agenda of the First Session of the European Regional ;~ssociation_ 7

3. List of Documents distributed before and during the First Session of Regional Association VI __________________ 11

List of References _ ____________________ . ______________ 17

5 General Summary of the work of the Session _ __ 21

6. List of Resolutions passed by the Session __ _ -- 33

List of Recommendations passed by the Session ---- ---- 57

3

5

LIST OF PERSONS

ATTENDING THE FIRST SESSION OF REGIONAL ASSOCIATION VI

E. Lahaye N. Petrenko Ho Petersen H Thomsen J.H.Go Crone-Levin Fo del Junco J. Keranen ho Viaut J c Guiraud P, Lecleroq Ao de Seyssel E~Go Bilham C V. 'Ockenden 1fi.R .. Morgan ]II. Doporto To Gudmundsson M. Gilead A..AoDo IJibri A. ]!Iastrangeli G. Saliba Thn Hesselberg H.P. Berlage IeRe Postma HnC" Bijvoet J. J.Jambor Cz. Centkievicz T. Dolinski Ao Ferreira A. Silva de Sousa R~Ao Cernea ]1. Stan Ao Angstrom Ao Nyberg J 0 Lugeon S. Masnata Fe Adali W. Kossenko F. Davitaja V. Rachmanov M. Perovio' Ao Obuljen

principal delegate principal delegate principal delegate delegate delegate principal delegate principal delegate principal delegate delegate delegate delegate prin0ipal delegate clelegate delegate principal d.elegate principal delegate principal delegate principal delegate delegate principal delegate principal delegate principal delegate delegate delegate principal delegate delegate delegate principal delegate delegate principal delegate delegate principal delegate delegate principal delegate delegate principal delegate principal delegate principal delegate delegate principal delegate delegate

Belgium Byelorussian SSR Denmark Denmark Denmark Spain Finland France France France France United Kingdom United Kingdom United Kingdom Ireland Iceland Israel Italy Italy Lebanon Norway Netherlands Netherlands Netherlands Poland Poland Poland Portugal Portugal Romania Romania Sweden Sweden Switzerland Switzerland Turkey Ukrainian SSR USSR USSR Yugoslavia Yugoslavia

6

II - Observers

H. Fahmy Bey K.H. Soliman A.W. Johnson J.C.S. ]lloKillip V.O. Snead !C.R. Edwards F.R. de Souza C.P. Valade H. Sebastian P. Wiisthoff --"" Phi lipps -- Ortmeyer J .H. Heierman R.S. Rodo. G. Swoboda J.R. Rivet

Egypt Egypt U.S.A. U.S.A. U.S.A. U.S.A. RA III and Brazil Allied l.aeteorological Board (Germany) Meteorologioal Servioe Hamburg Meteorological Service Bad Kissingen Meteorological Service Potsdam Meteorologioal Servioe Potsdam ICAO r.A,TA Secretariat WMO Secretariat WMO

- - ~ - - - - - - -

Ie

2.

AGENDA

Consideration of the report on credentials.

Establishment of committees.

Report of the President of the Association.-

Report of the President of the Sossion of the former European Sub-Commission on Meteo-rological Transmissions, whose activity was continued at the request of the President of Regional Association VI, and study of the recommendations made in Paris, February 1952.

Items submitted by the President of the Organization, the Executive Corill11ittee, other Associations, Commissions, the United Nations, and I~Iembers.

Doc. Nos.

23

25

5', 33, 28, 11, 14, 15, 24 (4.1)

5.1 Request concerning the ~ain USSR broadcasts.

503

5.10

511

Request concerning the list of Canadian stations retransmitted by FNO.

Request concerning the retransmission of Yugoslav broadcasts by lIIoscow.

Amendments of the Sp Code.

Awendment of the ]~ONT Code

Question concerning the cessation of Swiss HBB broadcasts.

2

2, 31

2, 31

2

2

Study of a new form of code for thermal 9 wind reports to be included in collective broadcasts.

Study of the inclusion of upper wind reports 9 in certain collective broadcasts.

Review of the results of the Payerne trials 22 of radiosondes.

Conventional representation of wind on charts.

6, 10

5.12 Retransmission of CLHiAT TENIP reports; 6 re-examine:hion of Washington Resolution 71.

5013 Organization and carrying out of aerological 6, 10, 21 observations in Europe.

Use of abbreviated headings in meteorological 6 telecommunications.

7

8 AGENDA ~~enda it~~

Analysis areas and centres.

Extension of i',[ESRAN code to provic'l~ for observations at 200 mb and 100 mb.

Reconsideration of symbol "j" in the group "6j app "

Regional agreement concerning the prooedure to be adopted for information on olouds bYDthe groups 8NsChsh~

Forms of oOd~~/atmospherics (SFERICS).

Publication of information ooncerning the red~ction of barometrio pressure.

Nwnbering of resolutions passed by Regional Association VI.

Transmission of radiosonde observations and reduction of delays in transmission.

Synops network and hourly reports.

Uniformity in reporting depth of fresh snow and total snow cover in synoptic messages.

Adoption of a provisional system of adding call signs to ship synops in weather broadoasts.

5021 Comparison of barometers.

6

6

6

6

6, 13, 20

8

10

10

11, 18

12

12

5.28 Reoommendations of NLET Couuni ttee of 3 EUM III/Paris 1952, which might affect Regional A~sooiation VI.

5.29 Re-examination of the resolutions concerning 4 Regional Assooiation VI~ taken by the Second Session of the Executive Oomraittee, Lausanne, Ootober 195R,

5.30 Extension of certain teleprinter transmission channels to Scandinavie,o Allooation to Soandinavia of the responsibility for inter-oeption and re-diffusion of certain broadcasts-transmissions.

6.

1 8.

Election of Offioers.

ImpleDontation of Resolutions of Regiona.l Commission VI of the nw.

10

10

11

AGENDA

Consideration of the need for Rules of Procedure for the Regional Association for Europe.

Establishment of working groups until the Second Session of Regional Assoqiation VIo

Other matters the Regional Association for Europe might wish to consider during the Session.

9 Doc. Nos.

11

LIST OF DOCTJlI.[ENTS DISTRIBUTED

BEFORE AND DURING THE FIRST SESSION OF REGIONAL ASSOCIATION VI

RA VI/I Doc. No.

1

2

3

4

5

6

Agenda Item lifo.

Title of Document

-~---------.-.. ----- '-'-- ._----_. __ .. --------------_._------_.-Report by the President of the Association.

Request concerning the index numbers of the USSR.

5.2 Request concerning the list of Canadian stations :l1etransmitted by }:I'NO"

5.3 Request concerning the retransmission of Yugoslav broadcasts by Moscow~

5.4 Amendments of the SpSpspsp Code. 5.5 Amendment of the -]\WNT Code. 5.6 Cessation of Swiss HBB broadcasts.

4

519

Recommendations made by the ~illT/Committee of Eill!I III/Paris 1952, which might affect Regional-Association VL

Extract of Resolutions of the Second Session of the Executive Committee, Lausanne, October 1951, being of interest -1:;0 Regional Association VI ..

Note of the President concerning Resolution 17 of the former European Sub-Commission for ][eteo-rological Transmissions, Paris, February 1952.

Representation of wind on chartso

CLHIlAT TEMP reports. Non-implementation of Washington Resolution 71 by oertain European Services.

Adequacy of existing network of radiosonde/radar-wind stations in Europe, as regards location, frequency of observations and heights attained.

Use of abbreviated headings in meteorological telecommunications 0

Analysis areas and centres.

Extension of ~KESRAN code to provide for observ-ations at 200 mb and 100 mt

Regional agreement on inclusion of 8~groups for medium and high cloucls.

Code for atmosph::.:d0S (SFERIC).

12 LIST OF DOCUNJ.ENTS

___ , ... _________ ~~._ _ ... _. _______ . __ ._._ .. _ ~~. _______ .~r_ u_ ... _____ _

RA VIII Doo. No.

Agenda Item No. Title of Document

--.--.------.---~------.. --.. -.. ~ ... -.- '.,._- .. ------.. ~- -'--_._-_. -"".' .. "'-"'--'_._' - --'-----

7

8

9

10

11

12

13

5.20 Inclusion of information for main USSR broadcasts in 1)IIMO Publication No.9.

521

Reco;:1.sideration of ax as "j \I in the group 6japp FM 110

Publication of information on reduction of barometric pressure~

Regular diffusion of l'.llESRAN reports from the Far East (Eastern Siberia) and India by DDF'"

5.9 Regular diffusion of aerological observations from the Pacific by Paris (Teletypes) under the heading "Temp Summarylle

Conventional representation of wind on charts.

Reprebentation of wind on surface charts.

Plotting of true wind on ae:cological oharts.

5.13 Altitude to be reached by radiosondes.

8 Study of the resolutions and reoommendations of the former Regional Commission VI of the International Meteorologioal Organization.

5.23 Transmission of radiosoundings.

5.23 Reduction of the delay between the carrying out of a radiosounding and the use of it.

5.22 Numbering of resolutions passed by Regional Association VI.

525

Note of the President ooncerning Recommendation 3.3 of the former European Sub-COlilmission for Meteorological Tr2,nsmissions, Paris meeting, February 19523

Uniformity in reporting depth of fresh snow and total snow cover in synoptic messages.

5.26 Adoption of provisional systems of adding . call signs to ship synops in weather broad-castso

519 Draft of a new ATMOS Code.

RA vIII Doc. No.

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

Agenda Item No.

41

5.24

510

1

2

LIST OF DOCUMENTS

Title of Document

Note of the President concerning Recommendations 14 and 30 of the former European Sub-Commission for Meteorologica.l Transmissions 1 Paris m.eetin~, February 1952.

Note of the President concerning Recommenda.tion 13 of the former European Sub-Commission for Meteorologica.l Transmissions, Paris meeting, February 1952.

Proposition of the President of the Commission for Instruments and Methods of Observation 1 concerning the international comparison of barometers.

Question of hourly observations.

Synoptic networks of surface observations.

Symbol "j" of the li6japplf group.

Code for Sferics.:

I Network of upper air observing stations. I .

l Radiosoundings and radiowind. "

Consideration of the results of the Payerne trials of radiosondes.

Credentials.

International network of meteorological teleprinters in Europe.

Convening of a Sub-Comrllission on Hydrology in Regional Associa.tion VI.

Nlinutes of the first plenary meeting held on May 26, at 10.30 a.m.

,Minutes of the second plenary meeting held on May 26, at 3 p.m.

Notification to Regional Association VI of plans for telG};l:cLrte:c ccmnections.

13

14 LIST OF DOCUMENTS

-------------,---------,--_.'-"_.----_ ... -_._---_._-, .. _ .. _.'-_ .. _--.. "--_._----,. RA VIII Doo. No.

29

30

31

32

33

34

35

36

37

39

40

41

Agenda Item No.

4

4

Title of Dooument

Minutes of the 3rd plenary meeting held on May 27, a.t 9.30 a..m.

, ]ffinutes of the 4th plenary meeting held on May 27, at 3 p.m.

Groups 918SVs a.nd919ff of the special phenomena code (9SpSpSpsp) in Region VI.

Mr. Lahaye's letter (Belgium) ooncerning provisional Agenda Items 5.8 and 5.9.

Mr. Sohoni's letter (President of RGgiona1 Association II) to President of Regional Association VI, concerning Recommendation 20.

Minutes of the 5th plenary meeting held on May 28, at 9030 n.m.

Minutes of the 6th plenary meeting held on May 28, at 2.45 p.m.

Nlinutes of the 7th plenary meeting held on May 28, at 8.15 p.m.

Mr. Se.liba.'s letter (Lebanon) to President of Regional Associa.tion VI, conoerning "Routing, by. Jelle Amstordam-Beyrouth Ra.dio-tele-printer, of European lI1.lEiSran, collected by DDF, and its retransmission in the national broadcast of Lebanon".

Mr. Perovic's letter (Yugoslavia) to President of Regional Association VI, concerning "Cirouit Belgrade-Zagreb-Milan and direct circuit Belgrade-Athens".

Minutes of the 8th plenary meeting held on May 29, at 10 a.m~

Minutes of the 9th plenary meeting held on May 29, at 2.30 p.m.

Minutes of the lOth plenary meeting held on :May 30, at 9030 a.m.

R.i;. VIII Doo. No.

Agende. Item No.

LIST OF DOCUMENTS

Title of Dooument

---_ ... _---- . __ ._ .. _----42

43

44

45

47

49

50

51

52

53

54

55

56

57

]!Iinutes of the extraordinary plenary meeting held on May 30, at 10.45 a.m.

lifir. Bureau I s notioe (France) about "ATMOS messages".

Proposal concerning re-organization of Regional Association VI teleprinter network.

Min,utes of the 11th plenary meeting held on May 31, at 2.30 p .r.l.

Minutes of the 12th plenary meeting held on June 3, at 2-30 p.m.

:Mlnutes of the 13th plenary meeting held on June 3, at 8.20 p.m.

Minutes of the 14th plenary meeting held on June 4, at 2.30 p.m.

Corrigendum to Doc. 1 "Report of the President of Regional Association VIII.

Addendum to Doc. 29 (PV 3).

Mr. Lambor's letter (Poland) to President o Regional Association VI concerning the change in the time of transmissions of Poland, Hungary, and Romania.

Minutes of the 15th plenary me.eting held on June 5, at 4030 p.m.

Minutes of the 16th plenary meeting held on June 6, at 11 a.m.

Corrigendum to French Document 28.

Minutes of the 17th plenary meeting held on June 6, at 3030 p.m.

]~inutes of the 18th plenary meeting held on June 6, at 8.)0 p.m.

Minutes of the 19th plenary meeting held on June 7, at 10 a.ra"

15

16

... _------RA VIII Doc. lifo.

LIST OF DOCUMENTS

-----_._--_ .. _---------_._--- .... _--------_._-_._ .. -._---_._-Agenda Item

No. - Title of Document

4 ~_._.' .. _. ____________ ~ ____ .. _~ .... ___ __ .._... ______ ~ ___ - ________ ~-~ - ..... -- -----., -.-.-- -.--.------.---" .....

59

60

. Minutes of the 1st meeting of Regional Assooie,tio::l VI permanent GrOup for Meteo-rological Transmissions held on June 1, at 10.52 a.m.

Minutes of the 20th plenary meeting held on June 1, at 2.45 p.m.

hfiinutes of the 21st plenary meeting held on June 1, at 8.)0 p.m.

Agenda Item

1

2

3

4

41

5

51

5.2

503

5.4

55

5.6

5 .. 8

59

510

5ell

(*)

LIS T 0 F REF ERE NeE S

Agenda items, Doouments relating,thereto, Referenoes to

Minutes and Decisions taken

.. _-_._--_._. Doc. No. Discussed in Minutes (*) Res.

._----_._-23 4(1) , 8(5) :; 9(4) ;

10(5) ; 11(4, 7, 8) ; 12(4, 8, 10) ? 14(5)

25 4(1) , 8(7, 9) ; 9(2, 7, 9) ? 10(3) ; 20(2)

4(1) 8(4) -5, 33, 38 4(1) 5(2) 6(2)

11, 14, 15, 21(4) 23, 24 24

6(3)

2, 6 6(3)

2 6(3) 6(6)

2, 31 6(6)

2, 31 6(6) 17(3) 19

2 6(6) 17(3)

2 6(6)

9 4(2) ; 6(6) 7(2) 20 18(2)

9 4(2) ; 6(6) ; 7(2) !l 19( 5)

22 7(2) 18(2) ; 20(2)

6. 10 7(2) 18(2) 7

17

Rec.

20

...

15, 16, 23, 24

-

II

12

2

4(1) has the following meaning Discussed in 4th Meeting~ point 1.

i8 LISTOF REFERENCES

-- -----~~ Agenda Doo. No. Disoussed in Minutes (*) Res. Reo. Item

5.12 6 20(2) 8 3

513 6, 10, 21 7(2) 18(2) 18(4) 9, 10, 4 11

514 6 7(2)

5.15 6 7(2) 18(4) 15 7

5.16 6 7(2) 18(5) 5

517 6 7(2) 18(4) 21 ...

5.18 6 7(2) 18(4) 8

5.19 6, 13, 20 7(2) 18(4) 22 13, 19

5.20 6 6(3) 1(2) (deleted)

5.21 8 7(2) 20(2) 16 9

5.22 10 7(2) 20(2) 1

523 10 7(2)

5.24 17, 18 7(2) , 19(5) 18, 17 10

5.25 12 7(2) ; 19(4)

5.26 12 7(2)

527 7(2) 20(2) 3 (b ,0)

5.28 3 7(2) 19(4) - 18, 17 18(4) 12, 13, 5, 6

14 5.29 4 7(2) ; 20(2)

5030 - 8 (6)" 6 7(2) (deleted)

7 .. 7(2) 17 (5) 8 10 - 7(2) ; 11(3) 14

20(2) 2, 3(a) , 1 4

I -------- --- ------ -- -- --- - - -- -- ----- --- -- ----- ----- -- -- - - --- -------- ----- ---------- --

Agenda Item

9

10

11

Doc. No.

LIST OR REFERENCES

Discussed in Minutes (*)

7(2) , 20(2)

7(2) ; 15(4) 16(2~ 4)

7(2) ; 20(2)

19

Res. Rec.

6

21, 22

GENERAL SUWLARY OF THE WORK OF THE SESSION

The First Session of Regional Association VI (Europe) was held in the building ofthe Station Centrale Suisse de Meteorologie at Zurich from 26 }[ay at 10030 hours to 8 June 1952 at .0600 hours .

There were 21 meet.ings and 60 documents were distributed. The . following Members sent delegations g

Belgium Byelorussian SSR Denmark Finland France Great Britain Iceland Ireland

Israel Italy Lebanon Netherlands Norway Poland Portugal Romania

The following Members were repres0nted by observers

U.S.A., Brazil, Egypt.

The following persons were also present g

The President of Regional Association III;

Spain Sweden Switzerland

. Turkey Ukrainian SSR USSR Yugoslavia

An observer of the Allied Meteorological Board, accompanied by two experts from the Meteorological Services of the German Federal Republic;

Two experts from the Meteorologioal Service of the German Democratio Republic,

Experts from the International Civil Aviation Organization and International Assooiation for Transport Aviation.

Attendance thus included persons from 26 Members of World Meteor-ological Organization and from 4 Organizations interested in meteorology in Europe.

21

In addition~ the Secretary-General of the World Meteorologioal Organization attended the opening meeting and the Deputy Seoretary-General took an active part throughout the Sessions

23 Members of the World Meteorologioal Organization made applioation for membership of Regional Assooiation VI, none of whioh was refused. The quorum is therefore 12 ]fiembers.

Three Working Committees were oreated to share the 11 items on the general agenda and the 30 items inoluded under 5 on the final Agenda.

They were given the following titles

A) GENERaL ~METEOROLOGY

B) METEOROLOGICAL TRANSMISSIONS

C ) ADMINISTRATIVE MATTERS

President

President

President

Mr. Bilham

Mr. Ookenden

Mr. Viaut

22 GENERAL SIDii]!lARY

The Committees provided for in the General Regulations were also set up

Credentials Com~itteeNominations Oommittee Drafting Oommittee

Co~nittee on Co-ordination

President :Mr. Hesselberg President Mr. I-Iessolberg :Messrs. de SeysseI (France), Bilham (Great Britain), Centkievicz (Poland) President of Regional Association VI, Chairman of Committees A, Band C.

The question of working languages cost the Association a great deal of time. Regulation 78 was interpreted differently by certain delegations. In the end, the vote on the proposed working languages produced the follow-ing result g French 18 votes, English 18 votes, Russian 5 votes. English ~nd French were therefore accepted as working languages, but all translat-ions were also made into Russian (Recommendation 25 (I-52) RA VI).

The following note was incorporated in the minutes of the 12th plenary meeting

"During the 12th plenary meeting, the question of languages was discussed and it was agreed that Russian had been used as a work-ing language during the 1st Session of Regional Association VI; the necessary arrangements were therefore made. II

The provisional agenda had been prepared by the President on the basis of doouments which were sent to him before the session.

The numerous items which were examined sucoessively in lilenary meeting were the subject of lengthy discussion; a particularly difficult item was Item 4, which raised questions of procedure. It was not possible to adopt the final Agenda until tllG 8th plenary meetil'lg ...

A Working Group on Meteorological Transmissions was set up under the temporary chairmanship of Mr. Ockendon. Some members of this Group were designated? several delegations, however, stated that they would nominate their member later (see 10 below).

The Swiss organizing Committee hed engaged 5 interpreter/translators for French, English and Russian. Furthermore, the Soviet delegation obligingly helped in the interpretation by mDking 2.vailable two inter-preters vnth Russianas their mother tongue.

There were two excursions - on Sunday, 1st June to the Righi and on Sunday, 8th June to the Jungfraujoch.

The Swis_s delegation offered a banquet in the halls of one of the old corporations of Zurich and provided varied entertainr:J.ent for the ladies. A colour film was projected in slow-motion, showing the sea of fog as well as colour transparencies of clouds.

A photograph was taken of those present.

GENERAL Sillfil.V"1A.RY 23

The Final Act, including the reports, decisions, minutes and documents, duplicated in French and English, was sent to all who attended, as well as to the authorities of the World :Meteorological Organization, within the' time-limit stipulated by the General Regulations.

*

* *

Brief comments on the disoussions oonoerning the items on the agenda, extracted from the minutes, are given below g

At the beginning of the session, the credentials of several delegates were not complete. As a result there was lengthy discussion in plenary meetings and .rithin the Credentials CO~TIittee. All the credentials sub-mitted were accepted before the end of the session. The ,Association never-theless adopted Recommendation 27 (I-52)~~ VI, on the subject of credent-ials.

2. Establishment of Committees.

The distribution of items of the Agenda amongst the three Committees vms as follovls :

(a) Committee for General ]!ieteorology ~ 5.4, 5.5, 5.8, 5.10, 5.11, 5.13, 5.15, 5.16, 5.17, 5.18, 5.19, 5.21, 5. 24, 5.25, 5.28, 10.

(b) Committee for I!Ieteorological Transmissions: 4, 5.2, 5-3, 5.6, 5.9, 514, 5.23, 5.24, 5. 26 , 5.28, 5.30, 10.

(c) Committee for Administrative ]jiatters g 5.10, 5012, 5.22, 5.27, 5.29, 8, 9, 10.

The Presidentts Report was acoepted

.4. Repor~ . ...hx... the Chs"j.rI!lal'LQ:L1h.~ __ 9.E.?..si9.lL.9L th_~.J.ormer_.EtJrop~9:J..t-.ub:-9_ommission f_or_l~~1ieorologiq~1 __ T.ransmiss:lQ!!Eb_.yvh-Q.~...Q.:ti vi.:ty was continued at the re

24 GENERAL SIDfffiiARY

whioh YTaS a,ooepted - of the President and met at Paris in February 1952. ThereoOimnendations submitted by the Sub-Comrdission to Regional Assooiation VI were nearly a:n allotted to Committee "J3". It was possible to adopt some of them, but there remained important divergenoies with respeot to line oommunioations, arising from the faot that the status of Germany has not yet been settled. As a result, Regional Assooiation VI was unable to oomplete all the work On its Agenda. Action will have to be taken later in order to meet the needs of European Meteorological Servioes interested in the meteorological activities of European States which are not Members of the Yvorld Meteorologioal Organization.

The q,uestion of the relations between the World Meteorological Organization and oountries which are not Members gave rise to lengthy disoussions under Item 4. No permanent solution was proposed.

5.. I-lf.~ .. ~:ubmi tt.ed by t~e President of J~he _9F~anization, the ~xecut~_~ COm~~9ther assooiat~onsj COIDYuissions, th~ .V.nited Nai!QE~J~4 ~leme~

-5.1 Requ~st o?ncerning the main USSR J3roadoasts.

During the sixth plenary meeting, this item oaused a disoussion between the Head of the Soviet Delegation and various delegates. In the end, it was not possible for Regional Assooiation VI to arrive at a deoisi"on.

5.2 ~equest oonoerning the list of Canadian stations re-transmitted -~--.--------.-

:~X l~J9..

The re-transmission by FNO of a seleotion of stations of the American COhtinent and of a part of the East-Pp.cifio was the subjeot of Recommend-ation 23 (I-52) RA VI. On this subject, the observer of the Meteorological ServiQe of the United States made the folloW'ing statement g

"1. The United States of Amerioa can aooept responsibility only for 'the transmission of data from wi thin Region IV, and does not oonsider itself responsible for transmissions of data from beyond 1800 longitude.

2. This seems to be a problem for Regions II and VI, which is not within the provinoe of the United States to solve.

3. Ft:;.rther, there is some evidenoe indicating that transmitters -of Region II can be intercepted directly in Europe.

4. It is true that a portion'of the data in question is available in Washington, but the reception is spasmodic and retransmission , of such data to Europe would be erratic. In addition, the proposal would necessitate employment ,of additional personnel without7 for all that, ensuring improvement.

GENERhL SIDillYIiill Y 25

5. In view of the above~ it appears unlikely that the United States Will be in a position to comply with the wishes expressed by Regional .':;'ssociation VI. II

5.3 Re~u~st c~~ernin~~~e re-tran~~~ion ~ Yugoslav Broadcasts by' Moscow.

It was not possible to discuss this iten during a plenary neeting~ the docunent relating to it states the reasons of economy in time ~nd route on which the proposal is based.

5.4 Am~~E~s .. of the ?p Code.

S.ee Resolution 19 (I-52) RA VI, which was adopted and RecomnenQ-. ation 11 (I-52} RA VI, which was.approved.

5.5 hnendnent of the ]tIONT Code.

It led to Recommendation 12 (I-52) RA VI, which was approved.

5.6 Question concerning t_he cessation of Swiss HEB Broadcast.

There were no comments on this item~ The Director of the Swiss Meteorological Service had made inquiries ai~ongst Directors of European Meteorological Services to learn whether ~ny inconvenience would result from the cessation of these broadcasts over long wavelengths.

5.7 (Cancelled).

5.8 9tudy of a new forE of code for thermal wind ~eEorts to be in~~ in collective b~~dc2st~.

It was decided that with effect from 1 Janu~ry 1953 centres using the HESRAN Code shall apply Resolution 20 (I-52) RA VI.

5.9 Study of the inclusion of upper wind reports in certain collective biVoadcasts.

After a lenghty discussion in which, amongst others, the delegates of Great Britain, France and Belgium took part, the following text was adopted z

"The Committee exa41ined the PISEL Codtl proposed by the Belgian delegation in Appendix F to the report by the farner European Sub-Conmission on Meteorological Transnissions, Paris 1952. It w~s decided that wind values corresponding approximately to the pressure levels 850, 700, 500 ~nd 300 1:1b could be obtained by extracting the groups corresponding to the heights 1,500m, 3,000m, 5,000r:1 and 10,000m from the original report contained in the code FM 32; the Comrni ttee also considered that it is

26 GENERAL SUlllIMARY

essential to retain this selection of levels. This procedure is considered preferable to the introduction of a new code. Region-al Association "VI consequently accepts this proposal and will trensmit it to the Commission for Synoptic Meteorology."

Committees .A and C dealt with the results of the experiments at Payerne in 1950 on the comparison of radiosondes and produced Recommend-ation 2(I-52) RA VI. It is to be noted that this Recommendation should be transformed into a Resolution. The experiments were oarried out under the aegis of the Joint Commission on EXgerimental Aerology of Cormnission for Instruments and j)f.[ethods of Observation together wi tha Committee for the Comparison of Radiosondes of the former Regional Commission VI of the International Meteorological Organization.

5.11 . Conventional. represnetation of wind on charts.

See Resolution 7(1-52) RA VI, which was adopted.

5.12 Retl~ansmission of CLIW.tAT TEf.~_Rel?'

GENERAL SUMMARY

Reconsideration of symbol IIj II in the Group "6japlI. k_~ __ ~_"'''' __ '''_''~ ___ _. __ ~. __ - - - -- --- ._- __ ._---- " -~ ....... -. _.- - ----...... ---~--- -- .... -.

Resolution 21(1-"52) RA VI was adopted.

5.18 Regi..?.?._~_~_~gr"~.~~~?t._ concern:!:E~. the pro~.E?i~_!o be~do1?!~''_i2. o..~~~l.~~~_j_::!.or~~~.~~."9.J."l:"._~~_~~d~._~L~~n 1?;y': ___ ~.h~ GrouL 8NsC~~.

Recommendation 8(1-52) RA VI was approved.

Resolution 22(i-52) RA VI was adopted, and Recommendations 13(1-52) RA VI and 19(1-52) RA VI were approved.

5.20 (Cancelled).

pressure.

Resulted in Resolution 16(1-52) Rb. VI whioh was adopted and Reoo@nendation 9(1-52) RA VI, whioh was approved.

5.22 Numbering of resolutions passed by Regional Association VI . ---.. ~-.-.-- ... ~--.. ~-- .. -----~ ~-.~--- .-- ... ~-... --.~.-,,-.-.-~ '--~-~'-"-'---- --... --~- -.--.~.--. --+. -~'--'-'" --~

In order to standardize, now and in the future, the numbering

27

system for resolutions and recommendations of a constituent body of the World :Uleteorological Organization and, in the present case, the decisions of Regional ~ssociation VI, the French delegation proposed a symbolical system of numbering ~ x(I-52) RA VI, the explanation of which is as follows

x is the serial number of the resolution or recommendation, I means the first session, II the second session and so on, 52 indicates the year, in the present case 1952, then 53 for 1953,

etc. , RA VI is the abbreviation of Regional Association VI (Europe).

Resolution 1(1-52) RA VI, concerning this proposal, was adopted after note had been taken of an observation by" the Deputy Secretary-General that this measure should be provisional.

5 23 ~ansE!i...l?....ion __ 91:"?;~.9::~.2'2Ade_._~b~~.;t:'va.ti9~and reiy.ction of.._9-el~ __ J:.~ ~];' ah 1?~i- s s i..9n ~

No remarks.

This item is summarized in Resolutions 17(1-52) R~ VI and 18(1-52) RA VI, and ReconKaendation 10(1-52) RA VI.

28 GENERAL SU'lY.IDfiARY ,

5. 25 l!..~iformi ty in. report~ng. depth ~U~ sn~E.-?:._~.otal snow oover in synoptio messages,.

Oommittee A deoided not to submit any reoommendation on this item, but to make the following statement &

If In view of the faot that the time available generally does not permit the inolusion of speoial phenomena groups in international messages, but that the snow oover on the ground is olearly indioat-ed by the symbol E of the 6th Group at 0600 Z, the Oommittee deoided not to submit any resolution on this subjeot."

5. 26 ~9-~i-2..!l. of a provision of ~~tem for ~9-d~~ood~ signs. yO shi~t synoptio messages in weather broadoasts. ~ - - ----It was not possible to oonsider this item during a plenary meeting.

5.27 OOElp'arison of barometers.

See Resolution 3(1-52) RA VI.

5.28 Reoommendations of. MET Oommi tt~e of E~ II1 ... LP~E.~s 19 52.1... .. ~hioh might affeot ~~gion~~ ~ssociatio~-y~.

This item is the subject of Resolutions 12(I-52) RA VI, 13(I-52) RA VI and 14(1-52) RA VI, whioh were adopted, and of Reoommendations 5(1-52) RA VI, 6(1-52) RA VI, 17(1-52) RA VI and.18(I-52) RA VI, whioh were approved. The prinoipal Soviet delegate oonsidered that as the USSR is not a member of 1011.0, whioh proposed Reoomine'ndations 12 and 13 EUM III/MET IO.b.O, he oould not approve them. He proposed amending the preamble oonoerning these reoommendations and adding to it a note: "The USSR is not a member of IOAO". This was approved and the text has the following form :

"Oommittee A examined Reoommendations 12 and 13 of EUM III/MET IOAO, Paris 1952. However, the Oommittee oonsidered that it would not be possible to implement these :r:eoommendations before they had been examined by the ad hoo Teohnioal Commissions of the World Meteorologio-al Organization. It was aooepted that the OAeM, in agreement with IOAO, should define the needs in respeot of upper wind for aviation."

5.29 ~~!.amina.tion of the r:esolutions~Qerni~fLg~&,QEal A~~Q.~_~ti,9n.n, ~dopted ~e seoond session of th~ Exe~~tiv~ Oommi~tee_l La~~_~~, Ootober 1951.

Study of the doouments reviewing some resolutions of the Executive Oommittee showed

(1) That it would be sufficient for Regional Assooiation VI to note Resolution 3(EO-II) (Provisional Teohnioal Regulations) of the Exeoutive Oommittee.

(2)

GENERAL SUI\lINii.RY

That as regards Resolution 5(EC-II) (Networks), Regional Association VI would have to adopt resoiutions to agree wi th the requirements of Item 3(i).

On the other hand, Item 3(ii) did not Seem to concern Regional hssooiation VI, in view of the faot that Teohnioal Assistanoe oan only be provided as the result of a request addressed by a Member to the Seoretary-General of the World Meteorologioal Organization .

5.30 !.xtension of oertain teleJ2inter transmissiop. .ohal}!lel. . .J.2 $.Q.o,ndinavia. Allocation to Soandinavia of the resl?~.~~i bili tx for interception and ~e-diffusion of certainb~oadEas!~~

It was not possible to examine this item during a plenary meeting. In fac:(j, it is in agreement with various reoommendations of the former European Sub-Commissionon Meteorologioal Transmissions (Paris, February 1952), all of which it was not possible to adopt, due to laok of timeo

29

It will be the responsibility of the Working Group on Meteorologioal Transmissions of Regional Assooiation VI to revert to this question later, but before the seoond session of Regional Assooiation VI.

2" (Canoelled) .

1- Eleotion of Offioers.

During this session, Regional Assooiation VI re-eleotedas its President, Prof. Dr. Jean Lugeon (Switzerland) and as its Vice-President, Prof. Dr. J. Lambor (Poland).

8. I~leme~ta~ion of resolutions of Regional Gomm~ss~o~ VI~t~ International Meteorologioal_Organizg...:tton .

Reoommendation 14(1-52) RA VI, part of whioh deals with this item, was approved. In view of the faot that the Committees A and B were unable to oomplete their oownents on Item 8, the Head of the Frenoh delegation proposed that the Presidents of Committees A, Band C oontinue with their work and oommunioate the result to the President of Regional Assooiat.ion VI by correspondenoe. Resolutions 2(1-52) RA VI and 3(1-52) RA VI, point la l , were adopted without discussion.

On the suggestion of the President, the following remarks were included in the Minutes ~

"Due to lack of time, it was not possible for the Committees A and B of Regional Association VI to examine oertain resolutions of the former Regional Commission VI of the International ][eteorologioal Organization, which should be maintained or canoelled. Disoussion of. this Item 8 was referred to the seoond session of Regional Assoo-iation VI."

Resolution 4(1-52) RA VI was adopted without discussion.

30 GENERaL SilllIMARY

2 Consideration of the need for Rules of Procedure for the Regional Association for Europe--"(RegUi-ation 3 of t}le_.9~_~rai-jte~].ati~gE):

Committee A carefully examined the need for such Rules and drew up Resolution 6(1-52) Rh VI, which was adopted without discussiono

10. ]JJstablishment o:r Wqrking Groups llntil the second ~.ssi.9_n_.:f :E!.e:.gion~LA.!?sociation Vl .

A - A Working Group on Meteorological Transmissions was created in place of the former European Sub-Commission on Meteorological Transmissions.

The terms of reference of this Group are given in Resolution 25(1-52) RA VI. The oonstituent meeting of the Working Group of Meteorological Transmissions was heid at Zurich on 7 June 1952. As a result of divergenoies of op~nion between various delegations, concerning the nomination of a ohairman of this Group, it was finally decided that the Group would elect a temporary Chair-man who would hold office until the permanent Chairman was elected.

The following is an extract from the Minutes of the oonstituent meeting g

\I (1) Opening.

The President of Regional Association VI opened the meeting, in conformity with Regulation 28 of i,VMO General Regulations, in the presence of those members of the Working Group indicated in the attaohed list mid of Representatives of Members of the Association who still had not nominated delegates for the Working Group or whose delegates were absent.

(Those members of the Group indioated by an asterisk were present)

Belgium L. Dufour

Bulgaria (Member VVM.O only) absent from 1st session of R.A. VI

J3yelorussian SSR will be nominated later

CZiechoslovakia (Member Rrl. VI) absent from 1st session of R.rl. VI

Denmark J.H.G. Crone-Levin, alternate Jakobsen

Finland S.N. Venho

France

Great Britain

GENERAL SIDfill!iARY

member ------_.

P. Leclercq*, alternate Sonnet

C.V. Ockenden*

31

"Greece (Member RA VI)

Hungary (Member RA VI)

Iceland

absent from 1st session of RA VI

absent from 1st session of RA VI

T. Gudmundsson*

Ireland M. Doporto*

Israel will be nominated later

"Italy

Lebanon

Netherlands

Norway

Poland

Portugal

Romania

Spain

Sweden

Switzerland

Turkey

Ukrainian SSR

U.S.S.R.

Yugoslavia

A. Mastrangeli

G. Saliba

K.R. Postma

Po Thrane

will be nominated

A.S. de Sousa*

V. Mangiu

will be nominat,ed

A. Nyberg*

O. Weber*

will be nominatad

will be :o.ominated

will be nominated

A~ Obuljen*

later

later

later

later

later

l[essrs. l..dali, ltngstrom, Berlage, Bijvoet, Bilham, Centkievicz, Oe:r-nea,Davi taja, Dolinski, Ferreira,Gilead, Guiraud, Hesselberg, Keranen, Kosseclco~ Lambor, Perovic, Rachmanov, deSeyssel, Stan, Thomsen.

Messrs. Edwards, Fahmy, Johnson, 'McKillip, Snead, Soliman. Messrso Ortmeyer, Philipps, Sebastian, Valade, WUsthoff.

(2) Election of the temporary Chairman.

The names of several candidates were submitted for the post of temporary Chairman of the Working Group on Meteorological Trans-missions of Regional Association VI. 'rhe following twenty Members,

32 GENERAL, SUMMiillY

roprosonted either by their principal delegates or by persons wh0 had been designated as members of the Working Group~ took part in the voting g Belgium, Byelorussian SSR, Denmark,Finland~ France, Great Britain, Iceland, Ireland, Israel, Netherlands, Norway, Poland, Portugal, Romania, Sweden, Switzerland, Turkey, Ukrainian~SSR, U.SoS.R. and Yugoslavia.

Mr. Ookenden (Great Britain) was elected and will also be the delegate of Regional i;.ssociation VI to the Working Group on ].[eteor-ologioal Transmissions of the Ooutmission for Synoptic Meteorology, if this Group is created."

B - The proposal by Poland that a Working Group on Hydrology be establish-ed resulted in Recommendation 20(1-52) RA VI.

Assooiation proposed certain amendments for the Rules of Procedure conoerning the voting resulting from VJMO General Regula,tions. These sub-jeots are dealt with in Reoowlendations 21(1-52) RA VI and 22(1-52) RA VI, whioh were approved. However, the delegate of Ireland made reservations regarding the future application of the rules proposed. In any case the matter v/ill be placed before the Execu-lii ve Oommi ttee or the Congress, whioh will make the final docision.

hS a result of the difference of opinion in oonnection with meteor-ologioal transmissions in Central Europe, it was not possible for the First Session of Regional association VI in Zurich to deal with the whole of its Agenda. A third week would probably not have ohanged the situation.

The Working Group on Meteorologioal Transmissions, under the chair-manship of ~lir. Ockenden, will have to' take over the main part of the work of the former European Sub-Commission on Meteorological Transmissions, Paris session, February 1952, on the basis of experience'obtained during the First Session of Regional Association Vlo

Nevertheless, the First Session of Regional ~ssooiation VI was productive and tho final outcome may be considered satisfactory, as 25 resolutions were adopted and 28 reoomtlendD.tions were approved, almost all of them unanimously.

(Signed) Jean LUGEON

Presidont RA VI

'---.. *---,..,.. ... -~------~--~-~"..--~ .. -----i

I LIST OF RESOLUTIONS I j

33

Resolutions

1. Numbering of the Resolutions adopted by Regional .Association VI. ..... -- ..... -.......... -.... --.---.. ------.------~-- .... --.--...... -.-... - 35

2. Resolutions of the ex Regional Cor.i~lission VI which are cance lIe d . __ __ . _____ .... _____ .. _. _____ . ____ . __ . __ . _______ ...... _._ ..... ____ .. __ - 36

3. Resolution of the ex Regional Conmission VI vvhich has been retaine d .. __ ._._. ____ .... _~ ____ .. ____ . ___ . ____ . ____ . _______ . 36

4. Development of the relations between ll[embers of Re gional Assooi a ti on VI . -.-.. -........ -.- .... --------..... -.----.--.--.-.. --.-_. __ ...... 37

50 Abridged form of Code for oollective upper air lil0 s sage s 0_ _____ _ .. - .. ---.------. ----.-.~-- .. --.- ..:.-.----. ---.--_-._._-- 37

6~ Rules of Prooedure for Regional ~ssooiation VI.--------

7. Conventional representation of wind on meteorologio-al surfaoe and upper air oharts 0---------- .. -------- .-.-------.---- 41

8. Reminder of Washington Resolution 71. Retransmis-sion of monthly CLINJ.b.T-TE1'iP mossnges 0--. ___ __ .. - - --.-.-- -----.. - 41

90 Approval of Reoommendation 4 of the Final Aot of the Session of the Sub-Commission for Experimental .lierology held at Zurioh in 1951.--------.--------------.-- 41

100 Inolusion in a single message of informat~on relat-ing to a radiosounding/radiowindo--_____________ . __ . __ . ____ . 42

11. Continuation of two radiosoundings per day in Franoe c.nd the Netherlands . ~______________________ ---.----. 42

12. Radiosonde stations to be created or to be Eloved. __ . ___________ 42

34 1):SI]} OF RESOLUTIONS

Resolutions g

13. Radio-wind and pilot balloon netvvork . --... ----.. -.-.--.... ---.----.-.-----.--.-" 45

140 Definition of important ohanges of wind speed and/ or direotion .---.. ---.-----.. ---.-------.--------.---.--.-- 47

15. Designation of Dunstable as the analysis oentre for the areas 30oN-75N, 45W-45E .. -~.---.-.-------.. ---.---- 48

16_ Desoription of the methods used for the reduotion of barometrio pressure . ~ ... -.-.----------.---.. --.---.--.. --.... ---.-.----.- 48

17.. Transmission of hourly data . ---~. __ .. _____ . _______ .. _ 48

18. Basio synoptio networks and oomplel~entary ne two rks .. _ ..... __ .... _ .... __ .... ---.----.-.------.... -........ ----.- .. ----_. __ ... _-. "'-"--'--" 48

20. New oode form for the transmission of thermal wind .~ .. ---.. -.-__ . _____ . ___ . ______________ ._. ___ . ___ .... _--,, __ .-.-..... 49

21. J symbol of the 6j app group "---._.~ __ .. _ .. ___ . __ ._. ____ . __ .... ______ ._._ ..... 50

22. Codes SFERIC and J.TMOS ... --.. - ... -----.---... -----.... -..... --__ . ______ ._._. 51

23.

24.

Repairs and reoommencement of service in the event of interruption in teleprinter cirouits.~------------ 55

Changes of frequenoy in the transmission by radi o-to leprinter .._---- -----.---. 55

25. Creation of the Working Group of Regional Association VI on Meteorologioo.l Transmissions ,.-.-_ ... _-_._._.--- 55

35

LI S T OF R 3 S OL UTI ON S

Ros.1 (I-52) Ri.l. VI - NillIIBEp;.ING OF THE RB]SOLUTIONS ADOPTED BY REGIONAL ASSOCL:lTION VI. ( * )

REGIONAL ASSOCI~TION VI~

DECIDES, provisionallY9

(1) That each Resolution adopted by Regional nssociation VI

(a) Shall be numbered as follows :

Resolution n(N-xx) R~ VI

n being the serial number of the Resolution, allotted without any interruption or return from 1 onwards. This number is written in arab numerals.

N being the number of the session during which the Resolution was adopted. This number is written in Ronan nUr.1erals~

xx being the last two figures of the year during whioh the session of Regional l.1.ssooiation VI was held.

(b) Shall be published, in conformity with Reg. 83, in the the four offioial languages, in the following form

Resolution 1(1-52) ~R VI . Resolution 1 (I-52) ill .. VI

Resoluoion 1(1-52) ~R VI PeSOJIlOIJ;IilR 1 (1 ~'52 )PA VI

(2) That at each session of Regional Assooiation VI, a list shall be drawn up of earlier Resolutions whioh have been kept in foroe and that this list shall be published in tho Final Report of the Session;

(~" )

(3) That any Resolution not inoluded on the list is oancelled.

The Exeoutive COffi.r:J.ittee noted this Resolution with the following cOlUnent g the procedure in this Resolution may be used until a' general prooedure for resolutions of all Regional i.ssociations and Technical COr.:lr:1issions be c.dop"i:;ed.

RESOLUTIONS 2 ~ 3

Res.2 (I-52) RA VI - RESOLUTIONS OF THE EX REGION~L COMMISSION VI WHICH ARE C;'NCELLED.

REGION~L ~SSOCIATION VI,

DECIDES,

That, amongst the Resolutions of the ex Regional Commission VI exa.mined by Regional .-,.ssooiation VI, those listed below are oanoelled

1st Session Paris 1946 Resolutions VII, XIII, XIV;

2nd Session Paris 1947 Resolutions I, IV;

3rd Session ~!:'Fis 19.48 Resolutions I, II, VII, VIII, X, XI, YJT, YJTI, XVII, XIX, XX, XXI, XXIV, XYJTII;

,1th Session London 1949 g Resolutions III, VIII (replaoed by Resolution 5(1-52) ~ VI),

Owing to laok of time it was not possible to examine all the Resolutions of the ex Regional COiill:lission VI. The oonsideration of these Resolutions will be oompleted at the 2nd Session of Regional .. ~ssooiation VI.

Res.3 (I-52) RA VI - RESOLUTION OF THE EX REGIONAL COW~ISSION VI WHICH HAS BEEN RETJ~INED. (COMP.i..RISON OF BAROMETERS).

REGION.i..L ASSOCIATION VI,

DECIDES,

(A) 'l'hat amongst the Resolutions of the ex Regional Commission VI . examined by Regional ~ssooiation VI, the. Resolution quoted below shall be maintained g

"CR VI London 1949 Resolution II

The Comi:lission~

(a) Has deoided that all ~ropean Meteorolog~oal Servioes shall oompare their national standard barometer with one of the absolute standard baror!leters in London, Leningrad and Paris;

(b) ReoorJDonds that eaoh country have an absolute standard barometer."

RESOLUTIONS 4 - 5

(B) That Members of Regional Association VI shall be reminded' of this Resolution;

(c) That Members of Regional Association VI shall make known to the President of Regional Association VI, at the latest on the 31st of December 1952, the action taken on the two parts of this Resolution.

Res.4 (I-52) RA VI - DEVELOPMENT OF THE RELATIONS BETWEEN MEMBERS OF REGIONAL ASSOCIATION VI

REGIONAL ASSOCIATION VI,

31

DECIDES that a new Resolution on the ~uestion of the development of relations between the Members of Regional Association VI within the field of scientific exchanges and progress in meteorology, shall be established as soon as possible.

Res.5 (I-52) RA VI - ABRIDGED FORM OF CODE FOR COLLECTIVE UPPER AIR iiKESSAGES.


DECIDES,

(a) That the abridged form of Code for collective upper air messages used in Regional Assooiation VI shall be the following ~

YYGG IIiii OXlhohoho

h8h8h8TT TdTdddf MESRAN or

h7h7h1TT TdTdddf

h5h 5h5TT TdTdddf

h3h 3h3TT TdTdddf

h2h2h2TT TdTdddf

hlhlhlTT TdTdddf

height above sea-level of the 1000 mb surfaoe, expressed in geopotential metres or in tens of geopotential feet. (For heights below sea-level, 500 is added to the number indioated by 11ohoho).

RESOLUTION 6

h8h8h8

h7h7h7

h5h 5h 5

h3h3h3 h2h2h2

Height above sea-level of the 850, 700, 500, 300, 200 and 100 mb surfaces, expressed in geopotential metres or in tens of geopotential feet, the ,thousands figure for the values in geopotential me"tres or the tens-of-thousands figure for values in geopotential feet being omitted.

hlhlhl

f ,wind speed in units of 5 knots

0 = o - 2 knots 5 == 23 - 27 knots 1 = 3 - 7 knots 6 == 28 - 32 knots 2 := 8 - 12 knots 7 == 33 - 37 knots 3 = 13 - 17 knots 8 := 38 - 42 l""...'1ots 4 == 18 - 22 knots 9 := 43 - 47 knots

Speeds between 48 and 97 knots are indicated by adding 50 to dd3 in such a case f is encoded as follows g

o == 48 - 52 knots 1 := 53 - 57 knots

etc

Vfuen wind speed exoeeds 97 knots, ddf is encoded by 999 and a supplementary group ddfff is added in which fff is the wind speed, in knots;

(b) That the above code is provisional and will be replaced in Regional Association VI by the universal code, if the latter is brought into use.

Res.6 (I-52) RA VI - RULES OF PROCEDURE FOR REGIONAL ASSOCIATION VI.


DECIDES,

I. The prOV~Slons of the present Rules of Procedure, drawn up in accordance with Rule 3, are extraoted from the dooument "Resolutions of the first Session of Congress, 19th ][aroh -28th April 1951" and all the Rules mentioned below are those of the "General Regulations of the Vj~WIi contained in the dooument referred to, whioh are to be applied by Regional Assooiation VI.

RESOLUTION 6

II. Definitions

III. Differ~_D:.~.~~_in .. _~.~!~!:F.Ee~_at?-.2E

Regulation ::.

IV. Modification of the provisions of_the ~e~~ral Regqlation~

Regulation 2 (0)

V. Limits and terms of reference of the Association

Regulation 111 and its Annex, Regulation 112

VI. Holders of office

Regulations 8, 116, 117, 118

39

VII. Carrling out of the functions of President and Vice-Presiden~

Regulations 11, 12, 14, 98

VIII.~~ssions an_'l:.pl8:9.~ of Se~~~..'2!!~.

Regulations 15, 16, 17, 18, 19, 119, 120

IX. !zen9-_~

Regulations 120, 121, 122, 123

Regulations 124 and 125

XI. Committees for the duration qf Sessigns

a) Credentials ~ Regulation 20 b) Nominations g Regulations 21 and 23 0) Drafting ~ Regulations 21 and 24 d) Co-ordination : Regulations 21 and 25 e) Other Corrunittees or Working Groups g Regulations 21,

26 and 27

XII. ~anguage~ (1)

Regulations 78, 80, 82 and 84

XIII.Working Groups between Sessions

Regulations 28 to 34 inclusive

(1) Subject to the rnodifioationsproposed by Regional Assooiation VI to the Exeoutive Committee ooncerning the three working languages in Europe.

40 RESOLUTION 6

XIV. votes

a) Voting procedure (1) g Regulations 44 and 45 b) Simple majority vote g Regulation 50 c) Roll-call vote & Regulation 46 d) Voting by secret ballot g Regulations 47, 48 and 49

xv. Elections a) Election to office 8 Regulation 51 b) Procedure g Regulations 47, 52~ 53, 54- and 55

XVI~ Conduct of business

a) General ~ Regulation 56 b) Call to order g Regulation 57 c) General procedure for the conduct of business Regul-

ations 58 and 60 d) Points of order ~ Regulation 59 e) Amendments g Regulations 62, 63 and 64 f) Adjournment of debates ~ Regulation 66 g) Adjournment of a meeting g Regulation 67 h) Closure of a debate g Regulation 68 i) SuspenSion of a meeting" and priority of proposals

Regulation 69 j) Voting on proposals or amendments: Regulations 61, 65

and 71 k) Suspension of rule of procedure : Regulation 12

XVII.Minutes and documents

Regulations 72, 73~ 74, 75 and 84

:xvm:. Pu!>li.e ty _of M~~~~~E-g~ Regulations 85 and 86

XIX. Joint sessions of constituent bodies

a) General 0 Regulations 35, 36, 37 . b) President and Vice-Presidents of

Regulation 39 c) Conduct of business , Hegulation

and 38 the Joint Session

40

(1) Pending the adoption by the Executive Oommittee of the new Regulation proposed.

--- ---------- ---- --------- ------ ------------'

RESOIDTIONS 7 ~ 8 - 9

Res.7 (I-52) RA VI - CONVENTIONAL REPRESENTATION OF WIND ON NillTEOROLOGICAL SURFACE Alln UPPER AIR CHARTS .

REGIONAL ASSOCIATION VI, '

C~NSID~RING the information given by the former President of the ex Regional Commission VI,

DECIDES that Regional Association VI shall invite its President to confirm that the question of uniformity on a worldwide soale, in respeot of the representation of wind on upper air charts, as well as on surfaoe oharts, shall be included on the agenda of the 1953 session of the Commission for Synoptio Meteorology.

Res.8.(I-52) RA VI - REMINDER OF WASHINGTON RESOLUTION 71 OF MONTHLY CLIWlAT-TElvJ.P MESSAGES.

REGIONAL ASSOCIATION VI~

RETRANSMISSION

DECIDES that oountries whioh, at present, have not yet trans-mi tted monthly CLI:rYlAT-TEil/iP messe.ges, should study the possi bili ty of organizing such transmissions and. do so insofar as it is appropriate for such oountries.

Res.9 (I-52) RA VI - APPROVAL OF RECQ]KMEHDA':1ION 4 OF THE FINAL ACT OF THE SESSION OF THE SUB-CO~KMISSION FOR EXPERIMENTAL AEROLOGY HELD AT ZUIUCH IN 1951.

REGIONAL ~SSOCIATION VI,

DECIDES,

That Regional Assooiation VI approves Recommendation 4 of the Final Act of the Session of the Sub-Commission for Experimental Aerology, whioh was held at Zurich in 1951 and whioh runs as follows

!lEaoh country is invited to develop, as far as it is able, a comparison sonde of the greatest possible absolute aoouracy, wh.ich. may serve as a standard of oomparison for those in current use.

Any country having developed s.uch 8. comparison sonde shall communicate complete technical and experimental information, as obtained both in the laboratory and in flight, in order to enab'le specialists of other countries to form an impartial opinion of it."

42 RESOLUTIONS 10 - 11 - 12

Res.lO (I-52) RA VI - INCLUSION IN A SINGLE MESSAGE OF INFORMATION RELATING '1'.0 A RADIOSOUNDING/RADIOWIND.


DECIDES that in radiosonde/radiowind reports all the information relating to one level shall be contained in a si"ngle message.

Res.ll (I-52) RA VI - CONTINUATION OF TWO RADIOSOUNDINGS PER DAY IN FRANCE AND THE NETHERLANDS.


DEPLORES the recent" reduction from two or three soundings per day to one per day at the radiosonde stations in the Netherlands, Franoe and North Africa, and emphasizes the serious cons r " J..ences of this reduction as regards upper-air analysis and forecasting? and


DECIDES to urge the Dutch and Frenoh authorities to take all possible steps to restore the progra~ne of two soundings per day as quickly as possible.

Res.12 (I-52) RA VI ~ RADIOSONDE STATIONS TO BE CREATED OR TO BE MOVED.


DECIDES,

(a) That, in addition to the operation of the existing stations listed in Appendix I, States shall take the necessary steps as soon as possible, but, at the latest, by the Ist"of July 1953, for the setting up and the regular operation of the new radiosonde stations indioated in Appendix II;

(b) That the stations indioated in Appendix III shall be moved as indicated in that Appendix;

(c) That two temperature soundings per day shall be regularly made and transmitted by all radiosonde stations.

As Appendices I, II, III only concern a part of States of Regional Association VI, it would be desirable that the other States

RESOLUTION 12 43

of Regional Association VI provide as soon as possible the necessary information fo r the completion of the Appendioes.

APPENDIX I

LIST OF EXISTING RADIOSONDE STATIOnS IN REGIONAL ASSOCIATION VI~ 1st JUNE~ 1952.

Norway' 001 030 384 415 M

Sweden 062 077 084

Finland 8)6 974

United Kingdom 005 026 111 322 496 743 808 911 I J

Ioeland 030

Denmark 011 180

Netherlands 260

Belgium 441

Jan Mayan Tromso Gardermoen Sola Ship 66-02 E

C5stermnd Stockholm Goteborg

Sodankyla Helsinki

Lerwick Stornoway Leuchars Fazakerley Hemsby-Larkhill Comborne Aldergrove Ship 60-20 W Ship 54-18 W

Reykjavik

'I'horshavn CO}Jenhagen

De Bilt

Uocle

Switzerland 610 Payerne

Portugal 509 536

Germany 0)2 202 185 338 384 393 454 486 633 672 866 934

Austria 035

Czechoslovakia 567

Poland 374

Hungaria 840

Romania 120 420

Italy 080 239 420 560

Lagens (Azores) Lisbon

Flensburg Emden Greifswald Hannovor Berlin Lindenberg Wernigerode Dresden Wiesbaden Erlangen Munioh Friedrichshafen

Vienna

Prague

Warsaw

Budapest

Cluj Bucarest

Milan Rome Messine Cagliari

Malta 598 ]lIal ta

Greece 716 Athens

44 RESOLUTION 12

Country Q..~try':

Franoe 110. Brest Lebanon '40100 Beirut 145 Trappes 180 Nanoy Turkey 062 Istambul 480 Lyon 130 Ankara 510 Bordeaux 030 Samson 645 Nimes 220 Izmir 761 Ajaooio K Ship 45-16 W Cyprus 606 Nioosia

Spain 221 Madrid Gibraltar 495 Gibra1 tar

Ireland 953 Valentia

APPENDIX II

HEW RADIOSONDE STATIONS TO BE CREATED IN ORDER TO COMPLETE THE EXISTING NETWORK.

Country Index Name Priority

Bulgaria 15 612 Sofia 1

Finland 02 904 Re;i,sjarvi 2

France 07 355 Ch~ te auroux 2 s

16 620 Greece Salonild 1 16 747 Candia 1+

Israel 40 180 Lydda 1

Italy 16 100 Venice 2 16 ,:}20 Brindisi 1

Norway 01 028 BjihnHya 1 01 212 Ona 2

Poland 12 565 Cracovia 1

Spain 08 001 La Oorogne 1 08 30], Palma de Majorque 1

or 08 432 San Javier 2

Syria 40 007 Aleppo 1

Turkey 17 280 Diarbakir 1 17 300 .b.nta1ya 2

Yugoslavia 13 l~7 Zagreb 2 13 274, Belgrade 1 13 334 Split 1

Note 20 stations to be created.

RESOLUTION 13 45

APPENDIX III

RADIOSONDE STATIONS TO BE MOVED.

FROM TO

90untry Index Name Index Name --_ ...... ---Germany 10 032 Flensburg 10 035 Schleswig

10 633 Wiesbaden Koblenz 10 672 Erlangen 10670 Bamberg 10 934 Friedrichshafen 10 826 Tiibingen

Netherlands 06 260 De Bilt 06 230 Den Heldor

Note ~ 5 stations to be moved.

Note g The Association considers that the ultimate reQuirements for all meteorological purposes should be studied by the appropriate Technical Commission of the World ~Keteorological Organization and that Regional Association VI should attempt at present only to formulate proposals. to meet current synoptic reQuirements in the European Region;

It is appreciated that Services concerned with the propos-als as regards new stations and stations to be moved may not be able to accept the proposals until they have been able to consult their Governments. The'se Services should., however, be reQuested to inform the President as soon as possible e,s to the possibility of iI'.lplementing the recommendationso

Res.13(I-52) RA VI - RADIO-WIND AND PILOT BALLOON NETWORK.

REGIONAL ASSOOIATION VI,

HAVING examined the existing radio~"vind network as shown in ArLYlex;

CONSIDERING,

(1) That it was very inadequate" in most parts of the Region;

(2) That a rapid improvement of the network, to reach the level necessary for meeting the meteorological requirements, e~pecially' those of aviation, would entail many difficulties and a heavy financ-ial burden;

(3) That, however, it was a matter of u~gency to establish a minimum network providing information regularly and at least twice daily;

RESOLUTION 13

(4) That it was also desirable that basio studies of the density in spaoe and time of radio-sonde? radio-wind and pilot balloon networks be undertaken;

DECIDES,

(a) That, as a first' and urgent step two daily rad.io-;.;-wind. observ-ations should be made simultaneously with radio-sonde observations in the European Region, to start as ~oon as possible but not later than July 1953;

(b) That eaoh Meteoro1ogioa1 Servioe in the Region should endeavour afterwards to inorease the number of regularly available radio-vnnd observations;

(0) That, in the meantime, existing pilot balloon observations should be maintained.

ANNEX

EXISTING RADIO-WIND NETVIORK.

gour:.~E1. NarJ.o Indox Number --*-----=---Austria Vienna -' Hohe Warte 035

Belgium Uccle 447

Cyprus Nicosia 606

Denmark Copenhagen 180

Franoe Brest 110 Trappos 145 Nanoy Lyon 480 Bordeaux 510 Himes 645 Ajaccio 761

Germany Sohleswig 035 E'mden 202 Hannovor 338 Berlin 384 Iserlohn 419 \7iesbaden 633 liunioh 866

Gibraltar Gibraltar 495

RESOLUTION 14

2~~.~t!y NanG I:nctex ~llml:>er

Greeoe Athens 716

Ioeland Reykjavik 030

Ireland Valentia 953

Italy Milan 080 Rome 239 Messine. 420 Cagliari (Elmesi) 560

Malta Malta 598

Spain Madrid 221

Sweden Stookholm 077

Switzerland Payerne - 610

Turkey Istambul 062 Ankara 130

United Kingdom Lervviok 005 Stornoway 026 Leuohars 171 Fazakerley 322 Hemsby 496 Larkhill 743 Camborne 808 il.ldergrove 917

'.7eather ships M.I.J.K.

Res.14 (I-52) RA VI - DEFINITION OF DLiPORTANT CHANGES OF WIND SPEED AND/OR DIRECTION.


DECIDES,

47

That the President of Regional Assooiation VI is requested to oolleot and oiroulate to Members information on the following points

(a) The oriteria used by each Service to define a substantial ohange of vnnd speed or direction for the purpose of ad-ditional groups in Code nK 32;

(b) The thiokness of the layer over which wind speed and direotion is averaged in oomputing values for inolusion in reports.

RESOLUTIONS 15 - 16 - 17 - 18

Res.15 (I-52) RA VI - DESIGNATION OF DUNSTABLE AS THE AN~LYSIS CENTRE FOR THE AREA jOON-75N, 45W-45E.

REGION~L ASSOCIATION VI,

DECIDES that Dunstable shall be the analysis centre for the area 30oN-75N, 45W-45E.

Res.l6 (I-52) RA VI - DESCRIPTION OF THE METHODS USED FOR THE REDUCTION OF BAROMETRIC PRESSURE.


DECIDES to remind Members of Regional Assooiation VI which have not been able to implement Resolution 144, CD Washington 1947, that it is neoessary to publish the desoription of methods used for the reduotion of barometrio pressure and to oonform in every respect with the provisions of that Resolution.

Res.le (I-52) RA VI - TRANSMISSION OF HOURLY DATA.


HAVING regard to the existing arrangements for the dissemination of AERO reports in .sub-area broadcasts,

CONSIDERS that a need does not exist at present for the inclusion, on a regional scale, of hourly reports in W.T. broadoasts using meteor-ologi cal channels. \Vhen there is a looal need for hourly reports over and above those available in sub-area broadcasts, the requirement should be met by arrangements made between neighbouring States. Any suoh speoial arrangements should not~ however, be allowed to interfere with the normal sohedules of transmission of synoptio reports and other information required for synoptic purposes.

Res.l8 (I-52) RA VI - BASIC SYNOPTIC NETWORKS AND COMPLEMENTARY NETWORKS.


REQUESTS,

(a) That in all countries of Regional Association VI a distinct-ion be made between the basic regional synoptio network and the sup-plementary synoptio networks necessary for national purposes or neigh-

RESOLUTIONS 19 - 20

bouring oountries, :":>1'iori ty of transmission being given ,to observ-ations of the basic network whenever possible,

49

(b) That the basic synoptic network A be that given in Appendix M of the repor-t of the Sub-CoIni11ission for Meteorological Transmissions of Regional Commission VI, Stoc~101m 1949, with suoh small changes as may be found neoessary in eaoh country.

Res.19 (I-52) RA VI - CODE 9SpSpSpsp

REGIONj~ ASSOCIATION VI,

DECIDES,

That the following group be added to the European special phenomena oode

height of the top of the layer of mist or haze observed from a mountain station

to be in same oode as h11, i .0., interna'tional code 40 (Publ. 9, Fasc.X , ,page I-A-4-20).

Res.20 (I-52) RA VI - N:iEW CODE FORM FOR THE TR.-.NSMISSION OF THERMAL HIND.


DECIDES,

That the follovnng form of code shall be used provisionally in the Regional Assooiation VI for the transmission of data relating to thermal wind, wi-th effeot from the 1st of January 1953, by centres using the MESRAN oode.

THERWIN

in which ;

THERWIN

IIiii

SHIP

The message identifioation

) ) )

Indicator groups referring to the layers of which the thickness data (1.'1") and "thermal wind" groups (dtdtft) are g'ive),l in the groups below.

50

1'1'

Codes HI" hI" Ht

0 ." 8 = 7 = 6 = =

RESOLUIJ:lION 21

(Note 3 A new group 5HrhrHtht will be inserted oaoh time that a ohange takes plaoe in one of the layers or in both).

Data of the group referring to station IIiii or to a ship in the position indicated by the group QLaLaLoLo

Thiokness of the layer between HI' and hr' rounded off, in geopotential deoametres, omitting the first figure. Example 2 5421 gpm is to be coded as .42.

Direotion of the "thermal wind" in tho layer between Ht and ht, in tens of degrees (00-36).

Speed of the "thermal wind" in the layer between Ht and ht, to tho nearest 5 knots, as in the HESRAN Code.

Refers to tho layer for vn1ioh 1'1' is given. HI' refers to the !2l2. and hI' to the base of tho layer.

Refers to tho layer for whioh dtdtft is given. Ht refers to tho top and ht refers to the base of the layer.

and h,t

1000 mb 850 mb 700 mb 600 mb

Res.21 (I-52) RA VI - j-SYM.BOL OF IJ:lHE 6japp GROUP


DECIDES,

That, with effeot from Is't January 1953, the ~Ileteorologioal Servioes in the Ev.ropean Region will use symbol j in the group 6japp

(i) at 0600 and 1800 GMT to report state of ground E (ii) at other hours to report the direction from whioh

. oloud is coming, in the 8-point code (Code 20), of tho highest olouds reported in group NhOLhC],[CII

RESOLUTION 22

Res.22 (I-52) ru. VI - CODES SFERIC AND ATMOS.


DECIDES,

. That, with effect from 1st January 1953,

(a) Code SFERIC as set out in ~nnexI is adopted for the dis-semination in the European Region of reports of the location of sources of atmospherics by the Cathode Ray Direction Finder tech-nique,

(b) Codes ATMOS as set out in .Annex II are adopted for the dissemination in the European Region of reports of storm centres by the narrow-seotor direction finder technique. The epochs to which the reports relate should be those rec'ommended in ;'nnex II.

ANNEX I

SFERIC CODE FOR ATMOSPHERIC REPORTS

Usocl for -the trnnsnission of t1essngos giving the position of sources of atnospherios :

SFERIC 66600

66600

GGG Time of observation GMT in hours and tenths.

ai Description of atmospherics.

Ai Information regarding the quality of the fix and the activity_

@ to Ii,

LaLaLoLok group gives positions, as for analysis messages.

Desoription of atmospherics ai

o No specification 3 No atmospherios observed 4 Scattered souroes in the area enolosed by lines

joining the suocessive points given by the follow-'ing LaLaLoLok groups.

51

6 Souroes along the line joining the positions indioat-ed by the following LaLaLoLok groups;

9 No report available owing to teohnioal reasons.

52

3

4

5

6

7 8

9 o

RESOLUTIOH 22

quality and activity of atmospherio fix.

First olass fix, slight aotivity.

Seoond class fix, slight acti vi ty.

Third class fix~ slight activity.

First class fix, moderate aotivity.

Seoond class fix, moderate aotivity.

Third class fix, moderate activity.

First class fix, considerable activity.

Second class fix, considerable aotivity.

Third olass fix, considerable aotivi ty.

Intense aotivity.

First class fix - probable error less than 40 KID

Second olass fix - probable error 40 to 160 Kra

Third class fix - probable error more than 160 KID

Slight 3 or less discharges observed from a particular source in a ten-minute observing period.

Moderate 4 to 9 disoharges observed from a partioular source in a ten-minute observation period.

Considerable 10 to 19 discharges observed from a particular souroe in a ten-minute observation period.

Intense over 20 discharges oD8;Jrved frOi'1 a particular source in G t0l1-."linu"G8 obsoX'vD,ti:on period.

ANNEX II

NEW ATlViOS CODES t

A. Stations using a narrow sec-bor direotion-finder shall transmit the azimuths of storm oentres, four times c.aily, with the

following oode, so that atmospherics may be located immediately a~d the results used for flight forecasting.

The following hours are recommended ~OCZ} 06Z, 12ZJ l8Z~ :Mossages shall be coded. The 06Z message shall be transmitted together .'Vi th the OOZ, as early as possible in the morningo

The accuracy required in the reading of directions is 1. For OOZ, 06Z and l2Z reports, GG-l and GG+l time intervals 8nall be used. For leZ message 16-l8Z time interval will be used.

RESOLUTION 42 53

Code ATMOS 99911 iiiGG FIIjDIDIDl F2IjD2D2D2

II block number of country

iii station number

GG time of reading in mILT

F intensity of points

1 dots I 2 dot;s low I

3 dashes I ,. ".

4 dots I I 5 dots and dashes) medium 6 dashes J 7 dots " 1 8 dots and dashes \ high

(

9 dashes J Ij density of points

II JO,l, 2d~ ; 1

;

III

54 RESOLUTION 22

B. Stations using a narrow sector direotion finder shall transmit daily, by oode, the complete detailed distribution of atmospher-

ics for the 24 preceding hours, so as to facilitate scientific research.

ATMOS

y

NEI. J

IIiii

day of the week

1 Sunday 2 Monday 3 Tuesday 4 Wednesday 5 Thursday 6 Friday 7 Saturday

N nu~ber of centre

F intensity (see A)

Ij density of points (see A)

NFl J

glgl exaot time of beginning of centre

start of recording round-ed to full hour.

end of recording rounded to full hour.

D1D1Dl position of the axis of centre corresponding to glgl

g2g2 exaot time of ending of centre

D2D2D2 position of the axis of the centre corresponding to g2g2

With a distribution of dashes of medium density spread over 400, and of low intensity F, 3 for instance, the coded message might be as follows ~ 1{38 15272 20278.

With a more active centre at 2800 intensity F = 6, density 3, the code form might be g N63 15280 20280.

RESOLUTIONS 23 - 24 - 25

Res.23 (I-52) R.A VI - REPAIRS AJ.~D RECOMJ'KENCID/IENT OF SERVICE IN THE EVENT OF INTERRUPTION IN TELEPRINTER CIRCUITS.


55

DECIDES that the meteorological authorities of national tele-printer centres shall maintain close contact with the competent -t;elecommunications agency in order that sui table steps may be taken when defects or interruptions in the circuit are noted and that repairs and the recommencement of service may be speeded up. In particular, when reception by teleprinter is defective, the receiving meteorological Service shall in:form the competent-communications agency of the ~r.ticular nature of the ~ifficulty which has arisen as soon as it oocurs, -in order to facilitate the rapid reoomrnencement of the service.

Re~o24 (I-52) RA VI - CHANGES OF FREQUENCY IN THE TRANSMISSION BY RADIO-TELEPRINTER.


DECIDES that when ohanges of fTe~uency in transmissions by radio-teleprinter become necessary, such changes shall be announced, if possible by the transmitting station, by means of the QSW or QSy signal; transmitted on the fre~uenoy about to be abandoned.

Res.25 (I-52) RA VI - CRENHON OF THE VlORKHTG GROUP OF REGIONAL ASSOCIATION VI ON METEOROLOGIC;"L TRANSMISSIONS.


DECIDES,

That provisionnally the responsibilities of the Working Group of Regional Assooiation VI on Meteorological Transmissions shall be the following ~

(a) To formulate recommendations relating to the creation of installations or of services for meteorological teleoommunic-ations;

(b) To formulate recommendations relating to modifioations whioh it might be necessary to make in installations or servioes for exi sting meteorologic[,l telecommunicati ons, including timetables:l the contents of transmissions and procedu.res;

56 RESOLUTION 25

(0) To enoourage the standardi.zation and uniformity of meteor-ologioal teleoolomunioation servioes and related procedures, within Regional Assooiation VI;

(d) To oo-ordinate the installation and operation j as well as the procedures and contents of messages, of the oomplex international teleprinter networks in Regional Association VI;

(e) To co-ordinato the installation, the prooedures, the time-tables and contents of messages of an integrated network permi tting the exchange of meteorologioal information by radio within Regional Association VI?

(f) To formulate recommendations on changes to be made in instal-lations, prooedures and contents of messages of meteorologio-al transmissi on systems betv/een Regional .i;.ssooiation VI and neighbouring regions?

(g) To arrange for the preparation and distribution of all reports, publioations, doouments and notioes relating to. meteorological telecolll1~1unications, which may prove necessary;

(h) To study the reoommendations made by the World Meteorological Organization and other institutions, which might affeot the installations or teleoommunication servioes of Regional Assooiation VI and take all steps which might become neces-sary?

(i) To form standing working groups and ad hoo groups; to designate persons who may be neoessary to carry out the tasks listed above and define their responsibilities?

(j) To exohange the necessary correspondence with the appropriate Sub-Commission of other regions, with the Central Sub-Commission for the transmission of meteorologioal inform-ation and with all other appropriate bodies;

(k) To organize regu.lar and rapid correspondence between the members of the Sub-Commission of Regional Assooiation VI and with other interested persons, in order to aooomplish the work mentioned above~ in the intervals between oonfer-ences,

(1) To carry out any other t~sk lillieh the President of Regional Association VI may allot to it?

(m) To adopt recommendations oonoerning any action enabling the working Group to fulfil its duties efficiently;

(n) In'discharging the duties specified above, the working Gro~p shall comply with the directives given by Regional Association VI.'

57

Re c.orrunen dati ons

1. Development of scientific exchanges and progress in the field of meteorology . --.-----~--.--.. -~-.---.. _______________ 59

2. Study of the results of trials of radiosondes made at Payerne .~---.. -----------------------' - 59

3. Retransmission of the monthly C1II~T-TEMP me ssage s ---~'--'---.-.-.---.-- -.--___ . __ . ___ .. _. ___________ . _______ . __ . ____ ._ 60

Indications regarding the time ot cOlnmenoing radiosonde ascents 0_._-- ____________ ... _. ----_ 60

5. Need fet' two radiosoundings daily .. ___________ . ____ . __ . ___ . __ -._, .. _ 61

6. Radi osonde/ radi a-wind network 0_. __________ . ____ .... ___ . ___ ._.. 61

1. Analysis centre in the Region 100N-45N, . 5 E~ 600 E . _____________ . . ____ .. ____ . ____________ .. ____ .. _~ ____ . __ ~._ .. _ 62

S. Revision of the definitions of significant clouds which are given in the group SNsChshso--.--.. --"-----------.---- 62

9. Methods recommendeo. for the reducti on of barometric pressure. _. ______ . ___ .. ____ . ________ . ___ 63

10. Synoptic network and hourly observations . ______ ._. _______ ... ______ 63

11. Group 919ff .-.-------.----------------------.-.. --.. ----.--.. 63

12. Amendment of the MONT Code , .. __ . _______ .

13. Calcu~ation of 100 by 100 orthodromes by stations equipped with narrow sector direotions finding apparatus (SFERICS) .---~----.--.--.. ---.. - .. -~--------.--.------- 64

Code for upper air reports._~. ~~.----_----_____ ... _. -' .. 64

LIST OF RECOMf'lIENDATIONS

Reoommendations g

150

16 ..

18.

20.

21.

22.

Information from the Far East .-----------.----.. ----.-----.--.......... -.-..... 68

Selection of stations of the Far East and the Paoi fi c ._ .... _ ... _. _____ ...... ____ .. ____ . __ ._. __ .. _ ...... ____ . --.--.--.. -------.--...... -.-.. 68

Recommendation No. 19 of the ]KET Commi tteeof EU}[ 1II1 ICAO Paris 1952~ conoerning the 'SFERICI ATMOS network ...... _. ________ ._. __ . _________ . _______ .,......_ .. __ .. __ . __ . ___ .--- .. 68

Recolumendation No. 20 of the ]n:ET Comrni ttee of Ell./[ 1II1 ICAO Paris 1952."'.--.---.. --... -----.---..c..-----.-.--.-----.. 69

Extension of the SFERIC network of observations.~ __ ._. ___ . ____ . 69

Creation of a Sub-~omrilission on Hydrology.------.. ----.. - .. ---70

New regulation concerning the voting procedure to be added to the General Re~lations between Regulation 50 and 51.------.--.-... -.. -..... ------------.-.---.-...... ... 70

AmeHdment to Regulation 50 of the General Re gu1 a ti ons .... ___ . ___ .. _____ .. __ .. ___ .. _ .... '-.--.... - .. -,.-.--.-----.----.... -.. -.--.- ... 71

l'laintenance of FNO broadcasts e _____ ._ .. _____ . ___ . ___ __ . ___ ._ ..... 71

Information from the Far East and the PacifioL. __ _

25. 'i'/orking languages of Regional Association VI. _________ ... _ .. _. __ .. 72

260 Subsidy from the World Meteol'ologica1 Organization for Regional Assooiation VI . ----.----.--.... -----.--.-....... -.. ---.--... 12

27. Credentials ...... -.--.. --.--.-----.---... - ..... -.. -.-----.. -.--.-.---.... -_ ..... - .... _ ...... - ... 13

28. Jam in the New 'York - Pari s traffi c . ------.----.. -.--.-' ..... -.--.. --.. --.-.. 73

LIST OF RECOMI1ENDATIONS

Rec~l (I-52) RA VI - DEVELOPN~NT OF SCIENTIFIC EXCRhl~GES AND PROGRESS IN THE FIELD OF ])KETEOROLOGY.


RECQ1@iENDS ,

59

(1) That the Executive Committee study the possibilities of supplying financial aid with a view to developing scientific exchanges and progress tn meteorology vrithin Regional Association VI;

(2) . That, whilst awaiting the results of this study, European States which are able to do so continue to ensure, so far as possible, the exchange of results obtained in the field of synoptic meteoro10gyc

Rec.2 (I-52) RA VI - STUDY OF THE RESULTS OF TRIALS OF RADIOSONDES NillDE AT PAYERNE. (*)


RECONITJiENDS,

(1) That Regional Association VI express its gratitude to its President, the President of the Sub-Commission for Experimental Aerology, Dr. Jean Lugeon, for the excellent work on the international comparison of radiosondes at Payer'ne and the care taken in the report-ing of results and the publication of them in the Final Act;

(2) That the President of Regional Association VI inform the President of the Commission for Instruments and ]).[ethods of Observ-ation that Regional Association VI hopes that the Final Act, as well as the resolutions and recommendations included in that report, will be studied at the next meeting of that Commission;

(~f) The Executive Committee has referred this Recommendation to the President of Regional Associat'ion VI with the following comment as regards para 4 g funds may be available in the 1952 budget of the Organization for the standardization and comparison of instruments.

60 RECOMMENDATIONS 3 - 4

(3) That Regional Association VI express its gratitude to -[;he Swiss Government for the facilities offered for a second inter ... natiol!.l'1,l oomparison at Pe,yerne;

(4) That Re'gional Association VI request the President of the Conunission for Instruments and Methods of O")servation to inform the Executive Conunittee of the importance of the work done at Payerne and to express the wish that the Su1)-Cornmission for Experimental Aerology be lnaintained and that financial ressouroes be plaoed at its disposal, if required, to ena1)le it to oontinue putting into praotioe the important items on its programme.

Rec.3 (I-52) RA VI - RETRANSMISSION OF THE MONTHLY CLDIiAT-TEWlP MESSAGES. (*)


RECOn[MENDS that a request be made for an enquiry to be under-taken by the Commission for Climatology, in order to ascertain how the monthly CLIWiAT-TEMP messages are used by the ]~eteorological Servioes and to determ~ne the number of messages to be transmitted in order to meet all needs.

The Executive Committee has referred this Recommendation to the President of the Commission for Climatology.

Reo.A (I-52) RA VI - INDICATIONS REGARDING TRill TIME OF COM}JiEl~CING RADIO-SONDE ASCENTS. (*) .

REGIONAL ASSOCIATION.VI~

RECQ]WlENDS,

(1) Tha-~ States take all neoessary steps to ensure that radi 0-sonde and radio-wind data are available for transmission in national broadcasts within the hour following the completion of the ascent;

(2) That the Commission for Synoptic 1lfleteorology should be asked to speoify definite times (the minute) for the oommencement of radiosonde/radio-wind observations for scheduled hours;

The Executive Committee has referred this Recommendation to the President of the Commission for Synoptic ]~eteorology.

RECONIMENDATIONS 5 .. 6 61

(3) That pending examination of this question by the Commission for Synoptic ][eteorology , the President of Regional Association VI should be requested to obtain information on current practice in the European Region as regards the time ot the launching of balloon and circulate this information to Members and to the President of the COlnmission for Synoptic Meteorology.

Rec.5 (1-52) Rb. VI - NEED FOR TWO R..A.DI OSOmlffiINGS DAILY.


RECO],!j][ENDS, .

That two soundings of temperature be c~rried out regularly each day and transmitted by all radiosonde stations.

Note The above text is also incorporated in Resolution 12 (I-52) RA VI, paran o.

Reca6 (I-52) RA VI - RADIOSONDE/RADIO-WINl? NETWORK .. (*)


RECOMMENDS,

(a) That the Technical Commissions of the World Meteorological Organization concerned should study the problem of the optimum density of radiosonde, radio-wind and pilot balloon stations and the frequency of their observations, and provide information on the results which may be expected from different densities of stations and different frequencies of observations;

(b) That it would be a substantial contribution to the work to be undertaken by the Technical. Commissions if Members could start such investigations immediately.

(*) The Executive Committee has referred this Recommendation to the Presidents of the Commission for Aerology and the Commission for Synoptic Meteorology.

62 RECOMMENDATIONS 1 - 8


RECO:MIViENDS ,

As regards area looliT-45N, 5E-60oE, that, as the greater part of this area is in WMO Regions I and II, the Regional Associations I and II should nominate the analysis centre, with the remark that so far as the Services belonging to Region VI in this area are ooncerned, the oon~inuance of Cairo as the analysis oentre would be regarded as satisfaotory.

The Exeoutive Committee has referred this Reoommendation to the Presidents of Regional Assooiation I and II.

Reo.S (I-52) RA VI - REVISION OF THE DEFINITIONS OF SIGNIFICANT CLOUDS vVHICH .ARE GIVEN IN THE GROUP 8NsChshs (~~)


RECON1.llIlENDS ,

That the Commission for Synopti 0 llieteorology should be requested to consider at its next meeting the necessity for revising the definit-ions of signifioant clouds, in order to provide more adequate inform-ation relating to olouds below6000 metres;

At the same time provision should be made for inoluding inform-ation relating to clQuds above 6000 metres, having regard to the requirements for the operation of jet airoraft.

(*) The Exeoutive Committee has referred this Reoommendation to the Presidents of the Commission for Synoptio Meteorology and tJ:le Commission for Aeronautioal l,1eteorology

REC~li~NDATIONS 9 - 10 - 11

Rec.9 (I-52) RA VI - METHODS RECOlvIMENDED FOR THE REDUCTION OF BAROMETRIC PRESSURE. ( * )


RECONffi~NDS that the Commission for Instruments and Methods of Observation indicate as soon as possible the methods recommended for the reduction of barometric pressure to sea level, or to some stand-ard level~ and that the methods recommended be adopted univgrsally.

(*) The Executive Committee has referred this Recommendation to the President of the Commission for Instruments and Methods o'f Observation.

Reo.10 (I-52) RA VI - STI~OPTIC NETWORK M~D HOURLY OBSERVATIONS. (*)


RECOMlKmNDS that the attention of the International Civil Aviation Organization be drawn to the present vvording of paragraph 403e2.1 of Annex 6 to the Convention of the International Civil Aviation Organiz-ation. It is the opinion of Regional Association VI that the present wording can lead to an over-estimation of the possibilities of making direct use of messages giving the data obtained from observations and consequently to an over-estimation of operating requirements in res-poet of messages giving data ottained from observations.

(*) The Executive Committee has referred this Recommendation t'o the President of the Commission for Aoronautical Meteorology.

Rec.ll (I-52) RA VI - GROUP 919ff.


RECO~~DS that - whilst waiting for a decision to be taken concerning the