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Eastern Pacific surface fluxes observed and simulated by coupled GCMs. Simon de Szoeke & Chris Fairall. de Szoeke et al. 2010: Surface Flux Observations on the Southeastern Tropical Pacific Ocean and Attribution of SST Errors in Coupled Ocean–Atmosphere Models, J. Climate. surface heat budget.

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eastern pacific surface fluxes observed and simulated by coupled gcms

Eastern Pacific surface fluxes observedand simulated by coupled GCMs

Simon de Szoeke & Chris Fairall

de Szoeke et al. 2010: Surface Flux Observations on the Southeastern Tropical Pacific Ocean and Attribution of SST Errors in Coupled Ocean–Atmosphere Models, J. Climate.

surface heat budget
surface heat budget

0 =

–∂/∂tSST

turbulent evaporation and sensible flux

net radiation

ocean residual

ocean residual flux
Ocean residual flux

“observed”

coupled GCM simulations

surface ocean heat budget
surface ocean heat budget

October

Colbo and Weller 2007

surface heat budget1
surface heat budget

ΔS > 40 W m-2

obs.

surface downwelling radiation
surface downwelling radiation

solar

longwave

clear

W m-2

full

longitude

S0:Iqbal 1988

R0: Hare 2005

surface downwelling radiation1
surface downwelling radiation

longwave

solar

W m-2

longitude

solar transmission
solar transmission

clear

full

cloudy

longwave cloud effect
longwave cloud effect

10 minute

averages

cloud forcing phase diagram
Cloud forcing phase diagram

polar

cold dry column

low sun 

tropical

warm moistcolumn,

high sun 

cloud forcing phase diagram1
Cloud forcing phase diagram

2(R–R0) > |S–S0| + 10 W m-2

daily average cloud radiative forcing
Daily average cloud radiative forcing

longwave

solar

xx: solar-weighted cloud fraction

red: 2(R–R0) > |S–S0| + 10 W m-2

model surface cloud forcing
model surface cloud forcing

models

buoy

ship

ISCCP

surface heat budget2
surface heat budget

0 =

–∂/∂tSST

turbulent evaporation and sensible flux

net radiation

ocean residual =

Ekman transport

geostrophic transport

upwelling

eddy flux divergence

damp SST