暴雨过程降水资料的中尺度分析对比试验

A COMPARATIVE EXPERIMENT OF MESOSCALE ANALYSIS ON PRECIPITATION DATA IN A HEAVY RAIN EVENT

摘要:

本文向读者推荐用降水爆发时间等时线分析暴雨过程里中尺度系统活动的办法。说明了其具体作法,给出了分析实例并与雨团分析进行了对比讨论。 结果表明,雨团分析表现的主要是对流单体这一类小尺度系统的活动,而降水爆发等时线所揭露的,则是降水中尺度系统,它可作为一种较有效的中分析方法与其它分析方法配合使用。

Abstract:

A method to discover the mesoscale system in a heavy rain event is suggested. That is to analyze the isochrone of the outbreak time of each rainy spell from the recording raingauge trace in the event. The detail in operation and the example of analysis are presented and compared with the analysis of hourly rainfall chart.It is indicated that the center in the hourly rainfall chart is mostly repres ented the microscale system such as convective cell so that it would be better to analyze the hourly rainfall center accompanied by mesoscale analysis. The isochone of outbreak time of rainy spell can expose the mesoscale system therefore it should be widely used as an effective means of mesoscale analysis.