6Weisman M L, Klemp J B. The dependence of numerically simu- lated convective storms on vertical wind shear and buoyancy[J]. Mon Wea Rev,1982,110:504-520.
7Brooks H E, Doswell Ⅲ C A, Wilhelmson R B. The role of midtropospheric winds in the evolution and maintainance of low-levelmesocyclones[J]. Mon Wea Rev, 1994,122:126- 136.
8Fu]ita T. Mesoanalysis: An important scale in the analysis of weather data[J]. Weather Bureau Research Paper, 1956, 39:1-84.
9Miller Robert C. Notes on analysis and severe-storm forecas ting procedures of the Air Force Global Weather Central[R] Technical Report 200(Rev). Air Weather Service(MAC), Unitcd States Air Force, 1972.
10Crisp Msgt, Charlie A. Training guide for severe weather fore-easters[R]. AFGWCTN-79/002. United States Air Force, Air Weather Service (MAC), Air Force Global Weather Central, 1979.