Numerical simulations of the mechanisms of the formations of the South China Sea cold and warm gyres under the joint effects of the wind stress and the coast lines are made in this paper by use of the Princeton University Ocean Model (POM).

Sri Lanka cold eddy and its generation mechanism analysis;

Three-dimension temperature structure of cold eddy-upwelling system off northeastern Taiwan Island in summer and winter;

Based on the historical marine observational data, the basic conditions of the cold eddy in the sea area northeast of Taiwan are analysed, which include the seasonal variations, pattern , structure and other characteristics.

Comparative analysis of two typical hail weather in Ningxia under influence of cold vortex over Mongolia;

Analysis of squall lines occurrign in cold vortexes over Northeast China;

The rainstorm usually occurs in the developing stage of northeast cold vortex,not in the declining phase.

Its vertical structure is awarm-cored vorticity column with convectional baraclinic distu.