对流层中层大气能量转换特征与暴雨激发和维持的关系  

Relationship between Energy Conversion Characteristic of Mid-Troposphere with Excitation and Maintenance in Heavy Rainstorm

作　　者：葛非[1,2] 郭胜利[1,2] 谌芸[3] 肖天贵[4] 唐玮玮[5] 

机构地区：[1]南京信息工程大学/气象灾害省部共建教育部重点实验室,江苏南京210044 [2]中国气象局大气物理与大气环境重点开放实验室,江苏南京210044 [3]中国气象局国家气象中心,北京100081 [4]成都信息工程学院大气科学学院,四川成都610225 [5]重庆市环境科学研究院,重庆401147

出　　处：《高原气象》2013年第3期762-769,共8页Plateau Meteorology

基　　金：国家自然科学基金项目(41175048);江苏省研究生培养创新工程(CXZZ11_0626)共同资助

摘　　要：利用NCEP/NCAR再分析资料和中国2 513个测站逐日降水资料,分析了2008年9月22—27日四川盆地持续性暴雨过程中对流层中层大气风场动能和势能的相互转换和分布特征。结果表明,在暴雨迅速发展阶段,受环流形势和地形等条件的影响,动能能量转换成驻波形式的波动势能;在强降水维持并减弱阶段,动能和势能之间的转换趋于平缓。在整个暴雨过程中,强降水区与500hPa风场能量大值区分布基本一致。此外,台风"黑格比"也为此次暴雨过程提供了必要的水汽。Based on the wind field reanalysis data of NCEP/NCAR and the daily precipitation data of 2 513 meteorological stations, the conversion and distribution characteristic of kinetic and potential energy during the heavy rainstorm process in Sichuan Province in September 2008 is analyzed. The results show that the kinetic energy is converted into potential energy in the form of standing wave under the influence of circula- tion and terrain conditions during the heavy rainstorm development period, the conversion between kinetic and potential energy become stable and slow in the heavy rainstorm maintain and weakened period. Energy area of high value is basically same to the heavy rainstorm region. In addition, the vapor provided by ty- phoon ‘Hagupit＇ is very significant to the heavy rainstorm.

关 键 词：连续暴雨过程 大气动能 势能 

分 类 号：P458.121.1[天文地球—大气科学及气象学]