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大气科学  2005 

新一代格点大气环流模式与陆面生态模式AVIM的耦合研究

DOI: 10.3878/j.issn.1006-9895.2005.06.06

Keywords: 陆面过程模式,生态模式,气候模拟,耦合

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Abstract:

将陆面生态模式AVIM(Atmosphere-VegetationInteractionModel)的物理模块(PHY-AVIM)耦合到中国科学院大气物理研究所新一代格点大气环流模式GAMIL(Grid-pointAtmosphericModel)中,替换GAMIL中的陆面模式BATS.对两种方案GAMIL+BATS(旧版本)和GAMIL+(PHY-AVIM)(新版本),分别独立进行11年积分,取后10年的积分结果进行分析.结果发现:新版本明显改进冬、夏季陆地表面的感热、潜热场通量,尤其在夏季,非洲大陆的中北部、欧亚大陆、北美中部以及南美北部等地区,新版本的感热场模拟值均比旧版本低,更接近NCEP再分析资料的结果;同样,对于地表面温度场,新版本在夏季明显地减弱了旧版本在大陆上的的暖偏差,模拟的结果更合理;新版本对冬、夏季的海平面气压场、降水场也有一定的改进,但改进不是很明显.以上的所有改进主要是由于AVIM引入了更细致的陆面物理过程参数化方案,以及使用了分辨率(0.5°×0.5°)更高的陆地植被分类资料.

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