Abstract

The reflected solar fluxes and the emitted outgoing longwave (LW) fluxes at the top of atmosphere (TOA) and the net surface solar fluxes from the Canadian Regional Climate Model (CRCM) are compared with those from satellite observations. Both broadband and narrowband satellite data are used in the evaluation of the CRCM results. It is found that the CRCM overestimated shortwave fluxes at the TOA and underestimated the surface absorbed solar fluxes. A systematic underestimate by the CRCM of the outgoing LW fluxes at the TOA is found during the winter season. Differences between the simulated clouds and cloud fields deduced from the satellite measurements persisted throughout the various phases of the project. The model-satellite differences improved with the improvement of the surface characteristics in the model.

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