The result showed that this hail event belong to the type of northwest cold eddy influence which has its own characteristic opposite to hail of northwest air curr.

This article describes the effect of whirlpool electrical currents generated in metal wall for wiring and upper and lower reinforcement rings ofelectricd- ynamic vibrator armature upon the performance of the vibrator, several practical methods with their associated brief theory are given to eliminate or reduce bad effects of these whirlpool electrical currents.

Relationships among the Northern Hemisphere Annual Mode,the Northeast Cold Vortex and the summer rainfall in Northeast China;

hrough the investigation into the energetics of a typical case of Northeast cold vortex it has been found that distinct features exist for different periods.

By using the NCEP/NCAR global reanalysis monthly mean data on 500 hPa height from 1958 to 1997,calculations are made for the cumulative annual average intensity index of the Northeast Cold Vortex and the Subtropical High every month.

Diagnostic Study of a Heavy Rain Caused by Cold Vortex in North China;

Analysis to the Impacts of the Northeast Cold Vortex (NECV) Process on the Rainfall during Meiyu Period over the Yangtze-Huaihe River;