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

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Presentation transcript:

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

Model Configuration Resolution: 0.5 degree Grid number: 182*154 Simulation Period:

Average states

GEM ERA40 Diff Winter Summer Sea Level Pressure

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

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

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

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

GEM ERA40 Diff Winter Summer Cloud cover (%)

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

GEM ERA40 Diff Winter Summer T2M Temperature  C

Variability

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

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

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

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

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

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

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.

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

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

Merci!