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Combo Model Accomplishments : G4AGCMTurned on:
Clouds, Variable UV AlbedoAdded:
Tropospheric Aerosols*, Shipping Emissions*Numerous Output Options, Variable CH4 BC
Modified:Un-Hardwired Setkin Files + More*
Changed:Philip Cameron-Smith’s pressure fixer
Simulations Completed & Stored on Dirac:4x5 & 2x2.5 G4AGCM 5-yr
Didn’t Do Yet:Tropopause Definition, Mesospheric Chemistry,More Complete Shipping Emissions (Eyring)
*Done for Tropospheric Model too.*Done for Tropospheric Model too, but not in latest runs.
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Evaluation of Combo : G4AGCM
Bryan, Jerry Ziemke, Sushil ChandraTropospheric O3 Column : OMI/MLSTotal O3 Column : TOMS
BryanUT/LS O3, HCl : OMI/MLS
SusanAge of Air : Aircraft DataUT/LS O3 : ER2
JenniferTropospheric, UT/LS O3 : Ozonesondes
DavidUT/LS O3 : Ozonesondes
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September 2004 -August 2005
1994-1998 G4AGCMaverage
Plots from Ziemkeet al., 2006
Trop Height : NCEP ~ G4agcm met defSynoz def = wacky
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ModelBiasedHigh inNH mid-Lats
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ModelBiasedHigh inboth mid-Lats
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TOMS AI?
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GMI CO wacky :no CO2 + hv
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FVGCM Mean Age, 28 levs (WMO)
-50 0 50LAT
100
10
1
PR
ES
0.5
1.01.5
2.02.5
3.03.54.0
4.5
5.0
5.0
5.55.5
FVDAS Mean Age, 28 levs (WMO)
-50 0 50LAT
100
10
1
PR
ES
0.5 1.01.5
2.0
2.5
3.0
3.5
3.5
FVGCM (5-yrs) Mean Age, 42 levs
-50 0 50LAT
100
10
1
PR
ES
0.5
1.01.5
2.02.5
3.03.
03.53.54.0
4.0
Age from Aircraft CO2 and Models
-50 0 50LAT
0
1
2
3
4
5
6
7
Age
(Y
rs)
Mean Age from 20-year Simulations
FVGCM 28-lev (black), FVDAS 28-lev (red), FVGCM 42-lev (blue)
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Stratospheric CH4 min (Feb. 0.73mb) = 223 ppbvO3 max = 9.8 ppmv
Precipitation reasonable vs GPCP
Miscellaneous Stuff