A review on aspects of climate simulation assessment |
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Authors: | Bin Wang Xin Xie Lijuan Li |
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Institution: | State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 |
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Abstract: | This paper reviews some aspects of evaluation of climate simulation, including the ITCZ,
the surface air temperature (SAT), and the monsoon. A brief introduction of some recently proposed
approaches in weather forecast verification is followed by a discussion on their possible application
to evaluation of climate simulation. The authors suggest five strategies to extend the forecast
verification methods to climate simulation evaluation regardless significant differences between the
forecasts and climate simulations. It is argued that resolution, convection scheme, stratocumulus cloud
cover, among other processes in the atmospheric general circulation model (AGCM) and the ocean-atmosphere
feedback are the potential causes for the double ITCZ problem in coupled models and AGCM simulations,
based on the system- and component-level evaluations as well as the downscaling strategies in some recent
research. Evaluations of simulated SAT and monsoons suggest that both coupled models and AGCMs show good
performance in representing the SAT evolution and its variability over the past century in terms of
correlation and wavelet analysis but poor at reproducing rainfall, and in addition, the AGCM alone is not
suitable for monsoon regions due to the lack of air-sea interactions. |
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Keywords: | climate simulation evaluation forecast verification ITCZ surface air temperature monsoon |
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