马志敏, 杨素雨, 王治国, 牛法宝, 连钰, 朱莉. 云南局地暴雨分型研究[J]. 云南大学学报(自然科学版), 2020, 42(1): 108-118. doi: 10.7540/j.ynu.20190031
引用本文: 马志敏, 杨素雨, 王治国, 牛法宝, 连钰, 朱莉. 云南局地暴雨分型研究[J]. 云南大学学报(自然科学版), 2020, 42(1): 108-118. doi: 10.7540/j.ynu.20190031
MA Zhi-min, YANG Su-yu, WANG Zhi-guo, NIU Fa-bao, LIAN Yu, ZHU Li. Study on the local rainstorm classification in Yunnan Province[J]. Journal of Yunnan University: Natural Sciences Edition, 2020, 42(1): 108-118. DOI: 10.7540/j.ynu.20190031
Citation: MA Zhi-min, YANG Su-yu, WANG Zhi-guo, NIU Fa-bao, LIAN Yu, ZHU Li. Study on the local rainstorm classification in Yunnan Province[J]. Journal of Yunnan University: Natural Sciences Edition, 2020, 42(1): 108-118. DOI: 10.7540/j.ynu.20190031

云南局地暴雨分型研究

Study on the local rainstorm classification in Yunnan Province

  • 摘要: 基于常规观测资料与NCEP再分析资料统计2011—2015年云南局地暴雨过程,对所选个例进行分型研究. 结果表明:局地暴雨可分为副热带高压外围型、两高辐合型、切变线型、热带低压型、孟加拉湾槽型5种类型;副热带高压外围型与两高辐合型暴雨发生频率最高,即副热带高压影响下有利于产生局地暴雨过程;卫星云图显示,该型暴雨主要由MβCS系统直接产生,MαCS与层状云个例较少,强降雨区位于系统边缘,产生于系统移动发展或移动减弱过程中;强降雨区位于TBB梯度大值带,TBB降低时间提前强降雨开始时间2~3 h,强降雨发展滞后于云团发展.

     

    Abstract: By counting the local rainstorm processes in Yunnan Province from 2011 to 2015, based on conventional observation data and NCEP re-analytical data, we divided and analyzed the cases of different types. The results show that the local rainstorms can be divided into five types, namely peripheral type of subtropical high, two-high convergence type, shear line type, tropical low pressure type and the Bay of Bengal trough type. The occurrence frequency of peripheral type of subtropical high and two-high convergence type is higher; that is to say, under the influence of subtropical high, it is advantageous to produce local rainstorm processes. The satellite cloud image revealed that, an MβCS causes such rainstorms directly, the MαCS and stratiform clouds are fewer, and the heavy rainfall areas are located at the edge of the system and occur in the processes of the system mobile development or mobile weakening. The heavy rainfall areas are located in the high value zone of TBB gradient, the TBB reduction takes place 2—3 hours prior to the start of the strong rainfall, and the development of heavy rainfall lags behind the cloud group development.

     

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