Orographic Sensitivity Experiments of "07.7" Meiyu Front Rainstorm
Orographic Sensitivity Experiments of "07.7" Meiyu Front Rainstorm
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发表时间：
2009
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影响因子：
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通讯作者：
Ying Yi-zhou
中科院分区：
文献类型：
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作者：
Ying Yi-zhou
The mesoscale numerical model WRFV2.2 was used to simulate the Meiyu front rainstorm that occurred over the Huaihe River drainage area during 8~9 July 2007(07.7 for short).Correlative orographic sensitivity experiments were made.The character of the rainfall was analyzed with sensitivity experiments,taking into account the effect that the terrain of Dabieshan area and Southeast of Anhui Province have on the precipitation of North Anhui province,North Hubei province,Southeast Henan province,and central Jiangsu Province.The result shows: That during the rainfall,the synoptic system on 700 hPa in the North of Anhui would have developed and moved more quickly and the rainstorm would have become stronger if the terrain of Dabieshan area did not exist.Under the same assumption,there would have been no orographic shear in the regions of Hubei and Henan and the orographic rain would have disappeared.With certain synoptic system allocation,the terrain of Dabieshan area would have an impact on the development of the 07.7 rainstorm in Jiangsu Province.If the terrain of southeast region of Anhui did not exist,the synoptic system on 700 hPa in the North of Anhui would have had only little development and the effect of the orographic shear produced by the terrain of Dabieshan area would have got weaker.Accordingly,the rain belt covering central Jiangsu Province would have been smaller.
