Dynamic and numerical methods are used to study/discuss the mechanism of terrain/thermal effect and the production/maintenance of South Asia monsoon.

Furthermore,tree-ring δ18O shows negative and significant correlations with South Asia monsoon index and East Asia monsoon index in different periods.

Constructing a Recent 8 ka High-Resolution Record of East Asian Winter Monsoon from Sediments on Inner Shelf of East China Sea;

The relationship between the spatial and temporal variation characteristics of the first mode(EOF1) of East Asian winter monsoon and climate change in China is revealed by using the vector EOF expansion of winter wind fields at 1 000 hPa over East Asia during 1951/1952～2003/2004.

Under this heterogeneous warming background,the sea-land thermal contrast would be changed and then may lead to the variation of East Asian winter monsoon(EAWM).

Using the CCM3/NCAR,a series of numerical experiments are designed to explore the ocean-land interlaced distribution of Africa—Arabian Sea(AS)—India Peninsula—Bay of Bengal(BOB)—Indochina Peninsula-South China Sea(SCS) on the formation of the Asian Winter Monsoon circulation.

Using the observation data obtained in the Rongbuk Valley in June 2007 and the real-time NCEP/NCAR reanalysis data,the variation of surface wind and its possible responses to the South Asian summer monsoon(SASM) were analyzed.

Qomolangma and its responses to the South Asian summer monsoon(SASM),using the observation data obtained during HEST2006 campaign in June 2006.

The first mode of the deviation wind field shows the rapid changes of the South Asian summer monsoon circulation around the onset and time series reflect the onset of South Asian monsoon and the abrupt change of the atmos.