Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2017, Vol. 33 ›› Issue (29): 103-111.doi: 10.11924/j.issn.1000-6850.casb16110033

Special Issue: 农业气象

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Two Heavy Rainstorm Weather Processes in Youyang

Li Na, Tu Junhua, Tang Feng, Du Junlin   

  1. (Youyang County Meteorological Bureau, Chongqing 409800)
  • Received:2016-11-07 Revised:2017-05-25 Accepted:2017-06-01 Online:2017-10-24 Published:2017-10-24

Abstract: In order to find out the dynamic and thermodynamic conditions of Rainstorm in Youyang county,Explore Study on the effect of rainstorm disaster on agricultural production,Utilize automatic weather station,Sounding and physical quantity field data,The heavy rain process in Youyang County in July 9, 2010 and in June 20, 2016 was analyzed.Results show:The two process Are all West High East low,Northeast Vortex and two troughs and one ridge situation,Control of the Western Pacific subtropical high in Southern China,500 hPa and 700 hPa low trough in the Sichuan basin are the main influencing factors of the two heavy rainfall processes.The difference is,July 9, 2010 rainstorm precipitation process for low trough eastward formation of Southwest Vortex and ground cold air intrusion caused by the local path through the northeast,June 20, 2016 rainstorm is mainly due to the small trough eastward southwest jet establishment,The formation of shear convergence caused by heavy rainfall.500 hPa low slot position,Low vortex shear system similarities and differences,The intensity of ground cold air is the main reason for the difference of the intensity characteristics of the two rainstorm processes.