(3)surface water vapor flux shows some small scale characteristics ,such as suface outflow of thunderstorm ,terrain convergence and low level water vapor transport.

Based on summarization of the basic laws and main affecting factors of net CO_2 exchange and water vapor flux in wetland ecosystem,relationship between the two is an.

And the NCEP/NCAR monthly reanalyzed data are employed to analyse the evolution character of water vapor flux and it s divergence flux, 500hPa height and u, v wind field.

With the development of convective activity,the water vapor flux and water vapor convergence develop toward high-level and the wet layer obviously thickens.

The MODIS product of the land surface vapor flux (MOD16) is not yet released by NASA because some parameters in the algorithm are very unstable in the time and space scales, which are difficult to be or cannot be derived from the remote sensing data.

Based on the observed data of soil moisture and microclimate in farmland,the soil moisture was analyzed,the vapor fluxes were calculated with М.

The EOF analysis shows that the vapor flux divergence showed the same variation trend in upstream of the Han R.

The relationships between δ 18O in precipitation and temperature, rainfall, and moisture flux in the Delingha region have been analyzed from data of δ 18O in precipitation and relevant weather parameters recorded by the Delingha weather station, and meteorological data were provided by the National Meteorological Information Center and NECP/NCAR by correlation and regression.

The observed meteoocean data were used to study the airsea energy flux and moisture exchanges over coastal waters of Qingdao, and the variation characteristics of sea surface wind stress, airsea heat and moisture fluxes in the area during 1961 to 2000 were analysed.

This paper analyzed the following contents of this weather:circulation situation,numerical forecast product,physical quantity field,vapour flux and its divergence,vertical velocity,and divergence variety et al.

Analyzed 15 precipitation cases in Tacheng Basin from 1998,it is shown that 700hPa vertical velocity and vapour flux of T106 and precipitation are positive correlation.