Draft of Course Work

Moving Platform for Helsinki Testbed

Mr. Paavo J. Airaksinen

VIMS/HydroMet

Vaisala Solutions

paavo.airaksinen@vaisala.com

Fixed HTB site (Orrengrund)

Example of a moving platform

(Virolahti-Helsinki)

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Ship station for HTB?

1. Could we add frequent data gathering from marine environment?

2. Requirements of mesoscale observing network vs. operational practices.

3. Is WXT510 good enough for marine environment, which is "hostile"? If so, maintenance needs in long run?

4. Limiting the work task, so that ther'll be stuff before Easter/ early April 2007

research &professional meteorology

weather sensitivebusinesses

Weatherenthusiasts

WXT510 focus

unit priceaccuracyperformance

Customer base

I work for this group (HydroMet/ Vaisala Solutions with some 60 other people)

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Solution some years ago – example MilosS520

m/s Aranda/ FIMR

Example of PC display

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Solution some years ago - MilosS520 VOS AWS

ORMILOS 500

STATUS

RESET

RESET

STATUS

STATUS

ERROR

FULL

CHARGING

AC ON

MILOS 520Data Collectionand ProcessingSystemwith DPA501Pressure sensorINSIDEEquipmentEnclosure

Wind VaneWAV 151

AnemometerWAA 151

Cross Arm

QMT102TemperatureendHumidity probe INSIDEDTR 13 RadiationShield

BRIGHTNESS

NMEA 0183Compass data

Inmarsat C terminal

Bridge Console

Bridge

WAS425

Ultrasonic anemometer

System Layout/ Small system

DTS12WSoil TemperatureSensor

Replaced by New HydroMet Station

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Issues to be dealed with

1) Selection of observing platform

2) Some words of ship observations

3) Met observations – WXT510 vs. WMO recommendations (marine obs)

4) Additional observations

5) Location and orientation

6) Reporting – contents and formats

7) Communications + Data gathering (HTB and GTS/WMO?)

8) Powering, data storing

9) Validation and QC

10) Summarizing - Course work plan

11) Documentation

12) Reseach with the data & comparisons with land data – anybody?

13) Comments, Suggestions!

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Discussion of the Platform

Platform vs. different conditions:

- is the platform operating also in near gale, gale and storm situations,

- these are typically interesting to many data users - but not for all.

Near gale

(Violent) storm, courtesy of NOAA:

photo available via www.wrh.noaa.gov/pqr/info/beaufort.php

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Case of m/s Meloodia= Possibility 1

+ m/s Meloodia / Tallink (*1979, renovated 1998)

+ In the early HTB phase, system with two WXT510, location equipment, data logger and GPRS was installed.

- GPRS data collection: ship mostly on Estonian waters => huge phone with Sonera bill due to roaming costs=> use was limited after first technical tests.

- pack with gps+ electric compass was installated erroneously (vertically and not horizonttaly). Data went crazy.

=> System was not taken into routine HTB use.

- Another compass was pre-tested. Installation crew had busy time => Instruments are still waiting…

- System is not used currently in HTB!

m/s Meloodia was build 1979, is 139 m long and 24 m wide. It has

a cruising speed of 20 knots.

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On the Platform vs.

 Schedule Helsinki- Tallinna

Superfast 08.30 11.00

Vana Tallinn* 10.00 13.45

Galaxy 18.30 22.00

Vana Tallinn 20.15 23.30

  Tallinna- Helsinki

Galaxy 13.30 16.45

Vana Tallinn* 16.00 19.15

Superfast 16.30 19.00

Vana Tallinn** 23.55 08.30

Not all year

Not heavy weatherSchedule / Tallink ships

Note: m/s Meloodia is not here!

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Platform possibility 2: Oppurtunity to learn

Tasks/ Galaxy:

+ Discussions with Vaisala people involved

- Discussion with FIMR people about the FerryBox/ Alg@line

- Discussion with the Tallink people

=> agreement of task

If m/s Galaxy is selected Site Survey is needed: planning of wiring + installation…

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Site Survey – Not just the Ship

Port of Tallin. Courtesy of Google Earth Plus.

Route Tallinn- Helsinki

Cruise 13.30 16.45

Port of Helsinki 16:45 18:30

Route Helsinki- Tallin

Cruise 18.30 22.00

Port of Tallinn 22:00 13:30

Take into account/ Find balance

- who is paying (their needs)

- who are the operational data users (their needs),

- the international recommendations like WMO, IOC and IMO

- Ship structure (see later).

- Ship location, route, operational practices and objects around (schedule).

=> Find as representative measurement site as possible. Be prepared to flag some data bad if QC criteria not filled.

Winter Schedule for m/s Galaxy:

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UV-B - additional measurement (test+campaign)

Sunshine

+ Pros: cosmetic, psychological, vitaminD.

- Cons: Skin cancer, reduced immunlogical status, skin ageing, erythema, keratitis, cataract.

Motivation:

- Very limited if any measurements on UV-B irradiation on passager ships (marine) environment.

- Need of special maintenance instructions in ship environment?

Sensor:

- model UVS-E-T by Kipp&Zonen has been selected

- spectral response adapted to the erythemal (sunburn) action spectrum of the human skin.

- produces information of medical and public concern: UV Index, UV Erythemal dose and dose rate.

- Data can be related to existing monitoring network data.

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FerryBox/ Alg@line installation at some line ships

Current situation?

• check once per week

• data through disk

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Limiting Work in this Task, perhaps so:To be added:

+ location/orientation

+ powering, wiring, installation

+ communication to HTB

+ WebCamera: due to QC?

=> 2-3 weeks of work, with testing?

Later, if funding/ HTB Phase II:

+ hourly SHIP reporting (+support to Helideck) with enh. coordinates

+ Alg@line data integration

+ PWD22 pres. weather and visibility

+ CL31 Ceilometer