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大气科学  2006 

AREM模拟云参数与卫星观测的比较研究

DOI: 10.3878/j.issn.1006-9895.2006.06.14

Keywords: 云参数,云模拟器,比较

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Abstract:

数值模式模拟计算云量与卫星观测云量的定义不同,难以进行定量比较,从而限制了对云模拟误差的检验和修正.作者介绍了可把数值模式输出云参数转换成ISCCP卫星反演云参数的云模拟器,并将其试用于AREM区域模式中,定量分析了模拟云参数和ISCCP反演云参数的差异.结果表明,AREM模式可以再现中国东部冬季云的基本分布特征,但与观测相比,四川地区云量模拟偏大20%,华东地区则偏小20%左右,云量中心的云顶高度比ISCCP反演值偏低一个高度段,云光学厚度偏大一个厚度段.模拟与观测云参数的定量比较,为评估和改进模式性能提供了依据.

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