期刊
GEOSCIENTIFIC MODEL DEVELOPMENT
卷 4, 期 3, 页码 723-757出版社
COPERNICUS GESELLSCHAFT MBH
DOI: 10.5194/gmd-4-723-2011
关键词
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资金
- Joint DECC/Defra Met Office Hadley Centre [GA01101]
- Natural Environment Research Council [ncas10009, jwcrp01003, NE/H024409/1] Funding Source: researchfish
We describe the HadGEM2 family of climate configurations of the Met Office Unified Model, MetUM. The concept of a model family comprises a range of specific model configurations incorporating different levels of complexity but with a common physical framework. The HadGEM2 family of configurations includes atmosphere and ocean components, with and without a vertical extension to include a well-resolved stratosphere, and an Earth-System (ES) component which includes dynamic vegetation, ocean biology and atmospheric chemistry. The HadGEM2 physical model includes improvements designed to address specific systematic errors encountered in the previous climate configuration, HadGEM1, namely Northern Hemisphere continental temperature biases and tropical sea surface temperature biases and poor variability. Targeting these biases was crucial in order that the ES configuration could represent important biogeochemical climate feedbacks. Detailed descriptions and evaluations of particular HadGEM2 family members are included in a number of other publications, and the discussion here is limited to a summary of the overall performance using a set of model metrics which compare the way in which the various configurations simulate present-day climate and its variability.
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