Based on the monthly mean air tempetature data of 29 stations in Hunan Province in the recent 40 years(in 1960-1999),and using the climate tendency coefficient,climate tendency rate,cumulative departure,power spectrum methods,the temporal-spatial change characteristis of air tempetature of interannual and four seasons over the region are analyzed.

Based on the daily ground temperature data from 107 stations in the Yangtze River Basin from 1961 to 2000,characteristics of spatial-temporal variability of mean ground temperature in the Yangtze River Basin were investigated with the methods of calculating climate tendency rate and temperature changes per decade of mean ground temperature in Yangtze Basin.

The variation trend,abrupt change and anomalous years of annual and seasonal mean soil temperatures at shallow layers in Lhasa were investigated during the period from 1961 to 2005 by using modern statistical diagnostic methods such as linear trend analysis,accumulated variance and signal noise ratio methods.

Using the data of monthly sunshine duration,mean cloudiness,surface vapor pressure and precipitation at 25 meteorological stations over Tibet from 1971 to 2005,the trend variation of the sunshine duration are analyzed by using linear trend analysis.

The climatic trend rate of annual precipitation was arising at 89.

Significant progress has been made in studies on climate variability at millennial time scales during the last quarter of the 20th century.

A study is undertaken of the climate base state of the northern winter sea level pressure (SLP) and its climate variability and temporal evolution, indicating that the base state has its high-val- ue region of means quare deviation in the Aleutian low, the northwest part of the Iceland s low and the Siberian high.

We focus mainly on climate variability of the both thermodynamic and dynamic necessary conditions which influence TC formation in response to global warming.