期刊文献+

Kinematic Structure of a Heavy Rain Event from Dual-Doppler Radar Observations 被引量:14

Kinematic Structure of a Heavy Rain Event from Dual-Doppler Radar Observations
下载PDF
导出
摘要 The detailed kinematic structure of a heavy rain event that occurred in the middle reaches of the Yangtze River was investigated using dual-Doppler radar observation. A variational analysis method was developed to obtain the three-dimensional wind fields. Before the analysis, a data preprocessing procedure was carried out, in which the temporal variation with the scanning time interval and the effect of the earth curvature on the data position were taken into account. The analysis shows that a shear line in the lower and middle levels played an important role in the rainfall event. The precipitation fell mainly on the south end of the shear line where southerly flow prevailed and convergence and updraft were obvious. With the movement and decay of the shear line, the precipitation moved and decayed correspondingly. The detailed kinematic structure of a heavy rain event that occurred in the middle reaches of the Yangtze River was investigated using dual-Doppler radar observation. A variational analysis method was developed to obtain the three-dimensional wind fields. Before the analysis, a data preprocessing procedure was carried out, in which the temporal variation with the scanning time interval and the effect of the earth curvature on the data position were taken into account. The analysis shows that a shear line in the lower and middle levels played an important role in the rainfall event. The precipitation fell mainly on the south end of the shear line where southerly flow prevailed and convergence and updraft were obvious. With the movement and decay of the shear line, the precipitation moved and decayed correspondingly.
出处 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2004年第4期609-616,共8页 大气科学进展(英文版)
基金 This work was supported by the National Natural Science Foundation of China(Grant No.40175010)
关键词 heavy rain mesoscale structure dual-Doppler variational method heavy rain, mesoscale structure, dual-Doppler, variational method
  • 相关文献

参考文献5

二级参考文献22

共引文献313

同被引文献272

引证文献14

二级引证文献185

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部