2014年春季桂林一次暴雨天气过程分析
|
摘要
利用常规观测资料和自动站资料,分析了2014年4月6日桂林暴雨天气过程的环流形势和物理量特征。结果表明,这次暴雨过程是由缓慢东移的南支槽、西南涡减弱后形成的低槽、弱冷空气共同影响形成的。500 h Pa以下为水汽辐合区,有强的水汽辐合。大气层结处于弱的对流不稳定状态,对流有效位能较小,大气能量较弱。暴雨发生过程中,大气层结变成稳定状态,但整层大气均为湿层。
Based on conventional observation data and automatic station data,the circulation and physical characteristics of the rainstorm weather in Guilin on April 6,2014 were analyzed.The results showed that,the rainstorm process was formed by the combined influence of the slow eastward moving south branch trough,the low trough formed after the weakening of the southwest vortex,and the weak cold air.Below 500 hPa was the water vapor convergence zone with strong water vapor convergence.Atmospheric stratification was in a weak convective instability state,the effective energy of convection was small,and the atmospheric energy was weak.During the rainstorm,the atmospheric stratification became stable,but the whole atmosphere was wet.
Based on conventional observation data and automatic station data,the circulation and physical characteristics of the rainstorm weather in Guilin on April 6,2014 were analyzed.The results showed that,the rainstorm process was formed by the combined influence of the slow eastward moving south branch trough,the low trough formed after the weakening of the southwest vortex,and the weak cold air.Below 500 hPa was the water vapor convergence zone with strong water vapor convergence.Atmospheric stratification was in a weak convective instability state,the effective energy of convection was small,and the atmospheric energy was weak.During the rainstorm,the atmospheric stratification became stable,but the whole atmosphere was wet.
引文
[1]陶诗言.中国之暴雨[M].北京:科学出版社,1980:1-80.
[2]陈刘凤.桂东北一次典型暴雨过程分析[J].气象研究与应用,2016,37(2):25-29.
[3]钟熊蔼.“5.20”信宜市特大暴雨过程诊断分析[J].广东气象,2016,38(6):28-32.
[4]周长艳.一次四川特大暴雨灾害降水特征及水汽来源分析[J].高原气象,2015,34(6):1636-1647.
[5]李阳斌.2013年5.16广东清远特大暴雨分析[J].广东气象,2015,37(1):27-30.
[6]胡勇林,洪展,陈利东.一次中尺度强降雨天气过程分析[J].气象研究与应用,2011,32(4):1-3.
[7]李琳,杨青,常泽堃,等.一次短时强降雨过程的中尺度分析[J].中国农学通报,2016,32(30):139-143.
[8]张芹,李晓利,王世杰,等.山东一次大范围暴雨过程的多尺度诊断分析[J].中国农学通报,2015,31(8):179-186.
[2]陈刘凤.桂东北一次典型暴雨过程分析[J].气象研究与应用,2016,37(2):25-29.
[3]钟熊蔼.“5.20”信宜市特大暴雨过程诊断分析[J].广东气象,2016,38(6):28-32.
[4]周长艳.一次四川特大暴雨灾害降水特征及水汽来源分析[J].高原气象,2015,34(6):1636-1647.
[5]李阳斌.2013年5.16广东清远特大暴雨分析[J].广东气象,2015,37(1):27-30.
[6]胡勇林,洪展,陈利东.一次中尺度强降雨天气过程分析[J].气象研究与应用,2011,32(4):1-3.
[7]李琳,杨青,常泽堃,等.一次短时强降雨过程的中尺度分析[J].中国农学通报,2016,32(30):139-143.
[8]张芹,李晓利,王世杰,等.山东一次大范围暴雨过程的多尺度诊断分析[J].中国农学通报,2015,31(8):179-186.