气象研究与应用
氣象研究與應用
기상연구여응용
JOURNAL OF METEOROLOGICAL RESEARCH AND APPLICATION
2011年
4期
41-44
,共4页
特大暴雨%热带低压%冷空气%东风急流%降水回波
特大暴雨%熱帶低壓%冷空氣%東風急流%降水迴波
특대폭우%열대저압%랭공기%동풍급류%강수회파
torrential rain%tropical depression%cold air%easterly jet%precipitation echo
通过对2008年10月12—15日海南省特大暴雨过程特征分析,表明海南“0810”特大暴雨是热带低压和冷空气相互作用的结果,特大暴雨的发生发展及减弱与偏东和偏南风急流的加强和减弱有较好的对应关系:东风急流造成海南岛东部降雨明显大于西部。副热带高压对北上热带低压的阻拦和形成的环流对降水起到了加强和维持的作用:雷达回波为典型的积层混合型降水回波;长时间的低层辐合、高空强辐散,有利于强降雨的发生和维持。
通過對2008年10月12—15日海南省特大暴雨過程特徵分析,錶明海南“0810”特大暴雨是熱帶低壓和冷空氣相互作用的結果,特大暴雨的髮生髮展及減弱與偏東和偏南風急流的加彊和減弱有較好的對應關繫:東風急流造成海南島東部降雨明顯大于西部。副熱帶高壓對北上熱帶低壓的阻攔和形成的環流對降水起到瞭加彊和維持的作用:雷達迴波為典型的積層混閤型降水迴波;長時間的低層輻閤、高空彊輻散,有利于彊降雨的髮生和維持。
통과대2008년10월12—15일해남성특대폭우과정특정분석,표명해남“0810”특대폭우시열대저압화랭공기상호작용적결과,특대폭우적발생발전급감약여편동화편남풍급류적가강화감약유교호적대응관계:동풍급류조성해남도동부강우명현대우서부。부열대고압대북상열대저압적조란화형성적배류대강수기도료가강화유지적작용:뢰체회파위전형적적층혼합형강수회파;장시간적저층복합、고공강복산,유리우강강우적발생화유지。
Based on the characteristic analysis of torrential rain process on OCT12-15, 2008 in Hainan, it shows that this process is the result of interaction between tropical depression and cold air. There is a correspondent relation between the occurrence development or weakness of torrential rain and the rapids or decrease of east and south jet, and the heavier rain in the east of Hainan is caused by the east jet. Moreover, the rain was enhanced and maintained by the prevention of subtropical high to Tropical depression towards north and the circulation. The radar echo is the typical accumulated layer mixed precipitation echo. Long time lower convergence and high altitude strong divergence are helpful for the occurrence and maintenance of heavy rainfall.