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高原气象  2011 

AREM模式的热启动数值模拟---------以2007年7月13日暴雨过程为例

, PP. 1488-1504

Keywords: AREM,热启动,LAPS系统,暴雨

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Abstract:

在成功移植LAPS云分析系统的基础上,实现了AREM暴雨中尺度数值预报模式的有云状态运行,并以2007年7月13日我国中部地区的一场大暴雨过程为例,进行了AREM模式冷、热启动的数值试验研究。结果表明:(1)模式冷启动0~6h内模拟的降水强度明显偏弱,通常只有不足5mm的降水产生;而模式热启动在模式积分的初始阶段就产生出较强的降水,改善了模式的SPIN-UP问题。(2)模式热启动对0~6h内云和降水预报的影响比较显著,之后影响减小,但对6~24h降水预报仍具有正影响。(3)在暖云方案下,云水初值比雨水初值对降水预报的影响更为显著。

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