canadian participation in fire iii/sheba by george isaac cloud physics research division...
TRANSCRIPT
Canadian Participation in FIRE III/SHEBA
by
George Isaac
Cloud Physics Research Division
Meteorological Service of Canada
- 4 0 - 2 0 0 2 0
Mean Daily Temperature (0C)
0
1
2
3
Ave
rag
e D
aily
Pre
cip
itat
ion
(m
m)
Inuvik 257 m mNorman W ells 315 mmW hitehorse 269 m mFort Sm ith 352 m mFort Nelson 449 mm
Isaac, G.A., and R.A. Stuart, 1996: Relationships between cloud type and amount, precipitation and surface temperature in the Mackenzie River valley - Beaufort Sea area. J. of Climate, 9, 1921-1941.
N NE E SE SE SW W NW Calm AllN NE E SE SE SW W NW Calm AllSurface W ind Direction
-40
-35
-30
-25
-20
-15
Mea
n M
on
thly
Tem
per
atu
re (
OC
)
ScatteredBrokenOvercastAll
Inuvik, January, 1961-90
N NE E SE SE SW W NW Calm AllN NE E SE SE SW W NW Calm AllSurface W ind Direction
5
10
15
20
25
Mea
n M
on
thly
Tem
per
atu
re (
OC
)ScatteredBrokenOvercastAll
Inuvik, July, 1961-90
SHEBA Site
FIRE.ACEFIRE.ACE: First ISCCP (International Satellite Cloud Climatology
Project) Regional Experiment Arctic Cloud Experiment
- To study the impact of Arctic Clouds on our climate using data collected during a field project (April to September 98) in the vicinity of the Surface Heat Budget of the Arctic Ocean (SHEBA) ice breaker located in the Beaufort Sea (October 97 to October 98).
Inuvik
Barrow
Fairbanks
Ship
SHEBA(Surface Heat Budget of the Arctic Ocean)
- To develop, test and implement models of Arctic air-sea-ice processes to improve climate simulations through data collected on the C.C.G.S Des Groseilliers frozen into the Beaufort Sea from Oct. 97 to Oct. 98
NRC Convair-580 and FIRE.ACE Team
FIRE.ACE Canadian Convair 580 Aircraft Flight LogDate Flight # Origin Destination Takeoff
Time(GMT)
LandingTime
(GMT)
FlightDuration
Comments
4/8 1 Inuvik Beaufort Sea 1945 2202 2.5 Clouds over leads.4/9 2 Inuvik Beaufort Sea 2003 2254 3 Clouds over leads/broken ice
4/12 3 Inuvik Beaufort Sea 1921 2244 3.5 Aerosol/clouds4/14 4 Inuvik Beaufort Sea 1827 2215 4 Aerosols/clouds4/15 5 Inuvik Beaufort Sea 1925 2327 4.2 Ice clouds over leads/aerosols4/16 6 Inuvik Barrow 1602 1906 3.3 Clouds/aerosols4/16 7 Barrow Ship 2050 0055 4.3 Clouds (water/ice)/aerosol4/17 8 Barrow Ship 1845 2256 4.4 Cloud/radiation work4/18 9 Barrow Inuvik 0041 0352 3.4 Aerosol/lidar4/21 10 Inuvik Barrow 1628 1933 3.4 Cloud/aerosol4/21 11 Barrow Ship 2137 0150 4.4 Liquid/ice cloud4/22 12 Barrow Inuvik 2041 0035 4.2 Aerosol/ice cloud4/24 13 Inuvik Beaufort Sea 1916 2253 3.8 Aerosol/cloud/flux/landsat4/25 14 Inuvik Beafort Sea 1941 0008 4.7 Clouds/aerosols(haze)/fluxes4/27 15 Inuvik Beaufort Sea 1908 2325 4.6 Haze/aerosols/ice crystals4/28 16 Inuvik Barrow 1616 2020 4.3 Transit fly4/28 17 Barrow Ship 2222 0236 4.5 Ice crystals/radar/lidar4/29 18 Barrow Inuvik 1914 2324 4.4 Ice crystals/cloud/fluxes
SHEBA FlightsDate Flight # Origin Destination Takeoff
Time(GMT)
LandingTime
(GMT)
FlightDuration
Comments
4/16 7 Barrow Ship 2050 0055 4.3 Clouds (water/ice)/aerosol4/17 8 Barrow Ship 1845 2256 4.4 Cloud/radiation work4/21 11 Barrow Ship 2137 0150 4.4 Liquid/ice cloud4/28 17 Barrow Ship 2222 0236 4.5 Ice crystals/radar/lidar
1) Gultepe, I., G. Isaac, I. MacPherson, D. Marcotte, and K. Strawbridge, 2003: Characteristics of moisture and heat fluxes over leads and polynyas, and their effect on Arctic clouds during FIRE.ACE . Atmosphere Ocean, in press.
2) Gultepe, I., G. A. Isaac, J. Key, J. Intrieri, D. O’C Starr, and K. B. Strawbridge, 2003: Dynamical and microphysical characteristics of the Arctic clouds using integrated observations collected over SHEBA during the April 1998 FIRE.ACE flights of the Canadian Convair. Meteorology and Atmospheric Physics, accepted.
3) Khvorostyanov, V.I., J. A. Curry, I. Gultepe, and K. Strawbridge, 2003: A springtime cloud cover the Beaufort Sea polynya: 3D simulation with explicit microphysics and comparison with observations. J. Geophy. Res., Accepted
4) Korolev, A.V. and G.A. Isaac, 2003: Roundness and aspect ratio of particles in ice clouds. Submitted to J. Atmos. Sci.
5) Korolev, A.V., G.A. Isaac, S.G. Cober, J.W. Strapp and J. Hallett, 2003: Microphsyical characterization of mixed phase clouds. Q.J.R.M.S., 129, 39-65.
6) Korolev, A.V. and G.A. Isaac, 2003: Phase transformation of mixed phase clouds. Q.J.R.M.S., 129, 19-38.
7) Gultepe, I., G. A. Isaac, and S. G. Cober, 2002: Cloud liquid water content versus temperature relationships for three Canadian field projects. Annales Geophysicae, 20, 1891-1898.
8) Boudala, F.S., G.A. Isaac, Q. Fu. and S. G. Cober, 2002: Parameterization of ice particles sizes for high latitude ice clouds. International. J. Climatology, 22, 1267-1284.
9) Gultepe, I., and G.A. Isaac, 2002: The effects of airmass origin on Arctic cloud microphysical parameters for April 1998 during FIRE.ACE. Accepted to J. Geophy. Res,. 107,
FIRE.ACE Journal Papers
10) Mailhot, J., A. Tremblay, S. Bélair, I. Gultepe, and G. A. Isaac, 2002: Mesoscale simulation of surface fluxes and boundary layer clouds associated with a Beaufort Sea polynya. Accepted to J.Geophy. Res.
11) Korolev, A.V., G.A. Isaac, I.P Mazin and H. Barker, 2001: Microphysical properties of continental stratiform clouds. Q.J.R.M.S., 127, 2117-2151.
12) Gultepe, I., G. A. Isaac, and S. G. Cober, 2001: Ice crystal number concentration versus temperature. International J. of Climatology, 21, 1281-1302.
13) Lohmann, U., J. Humble, W.R. Leaitch, G.A. Isaac, and I. Gultepe, 2001: Simulation of ice clouds during FIRE.ACE using the CCCMA single column model. J.Geophy. Res., 106, 15,123-15,138.
14) Curry, J.A., P.V. Hobbs, M.D. King, D.A. Randall, P. Minnis, G.A. Isaac, J.O. Pinto, T. Uttal, A. Bucholtz, D.G. Cripe, H. Gerber, C.W. Fairall, T.J. Garrett, J. Hudson, J.M. Intrieri, C. Jakob, T. Jensen, P. Lawson, D. Marcotte, L. Nguyen, P. Pilewskie, A. Rangno, D. Rogers, K.B. Strawbridge, F.P.J. Valero, A.G. Williams, and D. Wylie, 2000: FIRE Arctic Clouds Experiment. Bulletin of American Meteorological Society, 81, 5-29.
15) Korolev, A., G.A. Isaac, and J. Hallett, 2000: Ice particle habits in stratiform clouds. Q.J.R.M.S., 126, 2873-2902.
16) Gultepe, I., G.A. Isaac, D. Hudak, R. Nissen, and J.W. Strapp, 2000: Dynamical and microphysical characteristics of Arctic clouds during BASE. J. of Climate, 13, 1225-1254.
17) Korolev, A.V., G.A. Isaac, and J. Hallett, 1999: Ice particle habits in Arctic clouds. Geophys. Res. Let., 26, 1299-1302.
FIRE.ACE Journal Papers
Aerosol Chemical Composition in the Arctic during FIRE-ACE
Inorganic components vs. carbon in aerosols
Inorganic Ions77%
Carbon23%
Cl-13%
NO2-1%
Br-0%
NO3-20%
SO4=34%
C2O4=2%
Na+5%
NH4+12%
Ca++11%K+
1%
Mg++1%
Aerosol Total Carbon Breakdown
Total Water Insoluble Carbon
43%
Water Soluble Organic Carbon
40%
Total PAH0%
Total Alkanes2%
Short Chain Carboxylates
2%Long Chain
Carboxylic Acids13%
Korolev, A.V., G.A. Isaac, and J. Hallett, 1999: Ice particle habits in Arctic clouds. Geophys. Res. Let., 26, 1299-1302.
R = 4Smeas/ D2max
CFDE III
FIRE.ACE
AIRS I
Korolev, A.V. and G.A. Isaac, 2003: Roundness and aspect ratio of particles in ice clouds. Submitted to J. Atmos. Sci.
l-1
Gultepe, I., G. A. Isaac, and S. G. Cober, 2001: Ice crystal number concentration versus temperature. International J. of Climate, 21, 1281-1302.
Korolev, A.V., G.A. Isaac, S.G. Cober, J.W. Strapp and J. Hallett, 2003: Microphsyical characterization of mixed phase clouds. QJRMS, 129, 39-65.
Gultepe, I., and G.A. Isaac, 1997: Relationship between liquid water content and temperature based on aircraft observations and its applicability to GCMs. J. Climate, 10, 446-452 Plus FIRE.ACE (red), AIRS (blue)and RACE (green) data.
FIRE.ACE
AIRS
RACE
Geographical variation of parameterized Dge
-40 -30 -20 -10 020
25
30
35
40
45
50
Temperature (oC)
Para
mete
rize
d D g
e ( m
)
All Polar CFDEI + CFDEIIIFIRE.ACE BASE CFDEI CFDEIII
The original CCCMa SCM is compared with a new parameterization. The observations were made over the SHEBA column. Julian day starts from the
date that measurements were started in period 97-98.
300 330 360 390 420 450 480 510 540 570 600 630100
150
200
250
300
350
Julian day
Dai
ly m
ean
do
wn
war
d IR
flu
x at
the
surf
ace
(Wm
-2)
Observed New with D
ge(T)
Original
The original CCCMa SCM is compared with a new parameterization. The observations were made over the SHEBA column. Julian day starts from the
date that measurements were started in period 97-98.
300 350 400 450 500 550 6000
40
80
120
160
200
240
280
320
360
400
440
Julian day
Dai
ly m
ean
so
lar
rad
iatio
n fl
ux
at th
e su
rfac
eObserved New with D
ge(T)
Original
Anomaly analysis of IR flux at the top of the atmosphere for summer (JJA), fall (SON), and winter (DJF). Dge represents effective ice crystal size without small particle and
Dge+s with small particles. The IR flux is considered positive in the upward direction. (Dge - Dge+s) represents a difference in IR flux at the top of the atmosphere
Maximum near the Tropics Moves southward in NH Winter The anomaly is mostly positive Positive anomaly >Atm. Is optically thick
Comparison to Icing EnvelopesCFDE I, CFDE III, AIRS, FIRE.ACE (97 Flights)
Conclusions
• FIRE.ACE data are now in NASA Langley Archive.
• FIRE.ACE data are being analyzed by themselves and in combination with other projects.
• Modeling studies have been conducted using either single column models, weather forecasting or mesoscale models, and global climate models.
• MSC has produced approximately 17 journal papers and many conference papers.
• Other groups are now actively using the data.
Questions?