Intermodel spread of East Asian summer monsoon simulations in CMIP5
Intermodel spread of East Asian summer monsoon simulations in CMIP5
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DOI：
10.1002/2013gl058981
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发表时间：
2014-02
影响因子：
5.2
通讯作者：
Jinqiang Chen;S. Bordoni
中科院分区：
文献类型：
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作者：
Jinqiang Chen;S. Bordoni
在本文中，我们诊断的模式间传播耦合模式相互比较项目第5阶段（CMIP 5）东亚夏季风（EASM）模拟的湿静态能量和水分收支的背景下。我们发现，不同模式模拟的东亚夏季风降水的空间分布与纬向静止涡动速度高度相关，该速度定义为与长期纬向平均值的偏差。当考虑到进入大气柱的能量通量时，相关性变得更加稳健，与最近的观测分析一致。区域平均降雨量的扩散可以部分地由模拟的全球平均降雨量的扩散来解释，其余的主要是由于低层纬向风的辐合。降水与纬向和纬向涡动速度之间有明显的关系。
In this paper we diagnose the intermodel spread in the Coupled Model Intercomparison Project Phase 5 (CMIP5) East Asian summer monsoon (EASM) simulations in the context of the moist static energy and moisture budgets. We find that the spatial distribution of the EASM precipitation simulated by different models is highly correlated with the meridional stationary eddy velocity, defined as the deviation from the long‐term zonal mean. The correlation becomes more robust when energy fluxes into the atmospheric column are considered, consistent with recent observational analyses. The spread in the area‐averaged rainfall amount can be partially explained by the spread in the simulated globally averaged precipitation, with the rest primarily due to the lower level meridional wind convergence. Clear relationships between precipitation and zonal and meridional eddy velocities are observed.