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Published byAmelia Kitch Modified about 1 year ago

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GEM Climate Performance over Arctic *** A Simulation on MARVIN *** Minwei QIAN, Colin Jones, Katja Winger

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Model Configuration Resolution: 0.5 degree Grid number: 182*154 Simulation Period: 1983-2002 182 162 142 154 134114

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Average states

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GEM ERA40 Diff Winter Summer Sea Level Pressure

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GEM ERA40 Diff Winter Summer Geo. Potential Height (500mb)

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GEM ERA40 Diff Winter Summer Sensible Heat Fluxes (W/M 2 )

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GEM ERA40 Diff Winter Summer Latent Heat Fluxes (W/M 2 )

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GEM ERA40 Diff Winter Summer Solar Radiation downward (W/M 2 )

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GEM ERA40 Diff Winter Summer Cloud cover (%)

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GEM ERA40 Diff Winter Summer Longwave Radiation downward (W/M 2 )

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GEM ERA40 Diff Winter Summer T2M Temperature C

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Variability

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Standard deviation for T2M in JJA (interannual mean) GEM ERA40

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Standard deviation for T2M in DJF (interannual mean) GEM ERA40

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Standard deviation for SLP in JJA (interannual mean) GEM ERA40

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Standard deviation for SLP in DJF (interannual mean) GEM ERA40

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Standard deviation for Geo Potential in JJA (interannual mean) GEM ERA40

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Standard deviation for Geo Potential in DJF (interannual mean) GEM ERA40

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SummerWinter SLP2~8 mb0~4 mb Geo. Potential (500mb)40~80 m20~40 m T2M-1 C5~7 C Sensible Heat3~5 W/M 2 10~20 W/M 2 Latent Heat-5~-3 W/M 2 (less ev)~5 W/M 2 (more ev) Net Longwave-10~-5 W/M 2 5~15 W/M 2 Net Shortwave10~15 W/M 2 0 W/M 2 Longwave downward~ -10 W/M 2 20~40 W/M 2 Shortwave downward10~40 W/M 2 0 W/M 2 Cloud cover-5 %20% Summary 1 Over Arctic only Summary 2. GEM captures interannual variability of climate. Interannual variability is larger in winter than in summer.

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Geo. Potential Height (500mb) 1984-1992 GEM_LAM - ERA40GEM_Global_Stretched - ERA40 Summer Winter ERA40

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GEM_LAMERA40GEM_Global_Stretched Summer Winter Standard deviation for Geo Potential 500 mb (interannual mean)

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Merci!

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