星载测雨雷达探测的中国南部雨季对流性暴雨频次分析  

Analysis on Frequency of Convective Storm Rain in Rainy Season Over Southern China Based on Measurements by TRMM Precipitation Radar

作　　者：傅云飞[1,2] 刘鹏[1] 林锦冰[1] 衡志炜[1] 

机构地区：[1]中国科学技术大学地球和空间科学学院,合肥230026 [2]中国气象局武汉暴雨研究所,武汉430074

出　　处：《暴雨灾害》2011年第1期1-5,共5页Torrential Rain and Disasters

基　　金：国家自然科学基金重点项目(40730950);国家重点基础研究发展计划(2010CB428601);中科院科技创新项目(KZCX2-YW-Q11-04;KJCX2-YW-N25);国家公益性行业支撑项目(GYHY200906002);国家科技基础性工作专项(2007FY110700)

摘　　要：利用星载测雨雷达1998—2007年10年观测结果,对雨季我国南部(35°N以南地区)对流性暴雨、大暴雨、特大暴雨频次及其占局地总降水比例进行了研究。结果表明,暴雨主要分布于两广至云贵高原东部,其频次大于1.2%,最大可超过1.8%;大暴雨主要出现在广东西部至云贵高原东南、福建与江西交界附近、大别山西南侧、江淮至黄淮东部,其频次大于0.06%;特大暴雨主要位于两广交界经两湖盆地东部、大别山西侧至江淮之间和黄淮东部,大体呈东北—西南向带状分布,其频次大于0.015%;主要暴雨区暴雨对局地总降水的贡献可达25%以上,主要大暴雨区其雨量对局地总降水的贡献大于5%,主要特大暴雨区其雨量对局地总降水量的贡献多达1%～3%。The frequency of storm rain,heavy storm rain and extra storm rain in convective systems and their contributions to total rainfall in rainy season over Southern China（south of 35°N） are investigated based on measurements by TRMM Precipitation radar（PR） from 1998 to 2007.The results indicate that storm rain occured mainly over Guangdong and Guangxi provinces and the east part of Yunnan-Guizhou Plateau,and its occuring frequency was more than 1.2%,and the maximum frequency may be over 1.8%.Heavy storm rain appeared mainly over the west part of Guangdong,southeast Yunnan-Guizhou Plateau,near the junction area between Fujian and Jiangxi provinces,the southwest side of Dabie Mountains and area from Jianghuai to eastern Huanghuai.The frequency of heavy storm rain over these regions exceeded 0.06%.Extra storm rain with over 0.015% frequency occured mainly over the junction area between Guangdong and Guangxi provinces,the eastern basin of Hubei and Hunan provinces,the west side of Dabie Mountains,Jianghuai Region and eastern Huang-huai Region,which the distribution of the Extra storm rain area presented a northeast-southwest direction.Statistically,contributions of storm rain,heavy storm rain and extra storm rain in convective systems to total amount of precipitation were over 25%,5% and from 1% to 3% respectively.

关 键 词：暴雨频次 星载测雨雷达 雨季 

分 类 号：P458.121.1[天文地球—大气科学及气象学]