%0 Journal Article
%T LARGE SCALE ENVIRONMENTAL CONDITIONS FOR THUNDERSTORM DEVELOPMENT<br>
%A Yang guoxiang
%A Shu Cixun
%A <br>
%J 大气科学进展
%D 1985
%I 
%X The large-scale environmental conditions for thunderstorm development have been studied with 40 selected synoptic processes during 1972-1983. It is shown that the thunderstorms in eastern China can be divided into two types: pre-trough and post-trough. The convective instability before the pre-trough thunderstorms is established primarily by the dry and moist differential advection and that before the post-trough thunderstorms by the cold and warm differential advection. The subsynoptic scale circulation has direct effects on the establishment and release of instability. The pre-trough thunderstorms occur in the overlapping region of the ascending motion in the upper baroclinic waves and the ascending branch of the low-level jet strong wind core circulation and the post-trough thunderstorms occur in the lower convergent region below the ascending branch of the jet-front circulation. The effect of the lower dry and warm lids, the coupling of the low-and upper-level jets and the dry advection in the middle-level jet are the favorable factors for the severe storm formation.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=28A2F569B2458C17&jid=5434AFBF6CB6E7E8D67733B541F211C7&aid=CA8F7C66B439C7ABB553F278F586BBAE&yid=74E41645C164CD61&vid=0B39A22176CE99FB&iid=E158A972A605785F&sid=37F781FD8E744761&eid=68FF5306A8F9C315&journal_id=0256-1530&journal_name=大气科学进展&referenced_num=0&reference_num=0