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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >A seasonal cycle simulation over eastern Asia and its sensitivity to radiative transfer and surface processes
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A seasonal cycle simulation over eastern Asia and its sensitivity to radiative transfer and surface processes

机译：东亚的季节性周期模拟及其对辐射传输和地表过程的敏感性

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A multiseasonal simulation over eastern Asia and its sensitivity to cloud radiation and surface processes is analyzed. The model used is the NCAR Regional Climate Model (RegCM), the period of simulation is 13 months in length, and the emphasis of the analysis is on surface climatology, monsoon circulations, cloudiness, surface solar radiation, and top of the atmosphere outgoing longwave radiation. The model reproduces the basic features of the seasonal evolution of east Asia climate, but it overpredicts the intensity of the mature phase of the eastern Asia monsoon. Surface solar radiation is comparable with observations, while outgoing longwave radiation is mostly underestimated. Different formulations of large-scale cloud-producing mechanisms are shown to significantly affect cloud profiles, the surface and top of the atmosphere radiation budgets, and as a consequence, the simulated surface climatology. Variations in surface characteristics affect precipitation simulation in different ways during the cold/dry and warm/wet seasons. This paper emphasizes the importance of examining cloud radiation processes in regional climate models in greater detail than has been done in past studies.
机译：分析了东亚地区的多个季节模拟及其对云辐射和地表过程的敏感性。使用的模型是NCAR区域气候模型（RegCM），模拟周期为13个月，分析重点是地表气候，季风环流，云量，地表太阳辐射和大气层顶出长波辐射。该模型再现了东亚气候季节演变的基本特征，但它高估了东亚季风成熟期的强度。地表太阳辐射可与观测结果相媲美，而外出的长波辐射大多被低估了。大型云产生机制的不同公式显示出会显着影响云剖面，大气表面和顶部的辐射预算，并因此影响模拟的表面气候。在冷/干燥和暖/湿季节，表面特征的变化以不同的方式影响降水模拟。与过去的研究相比，本文强调了在区域气候模型中更详细地研究云辐射过程的重要性。

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