Based on European Centre for Medium-Range Weather Forecasts （ECMWF） fifth-generation global atmospheric reanalysis （ERA5） every day from May to August during 1979-2020, three land-atmosphere indexes to investigate land-atmosphere coupling processes were calculated,characteristics of land-atmosphere coupling in climatology and their difference under different dry and wetsoil conditions were analyzed over eastern and southern Asia. The results show that Northeast and North China,the Tibetan plateau, India, Yunnan Province of China and Southeast Asia,the middle latitude arid zone were strong land-atmosphere coupling zones in climatology. In the middle latitude arid zone, land-atmosphere coupling had no significant difference under different soil conditions due to the low soil moisture and its little variability. In the other strong coupling zones, the coupling strength decreased with increasing soil moisture condition because of the bigger variability of soil moisture in these regions, and this law is applicable to the coupling processes between soil moisture（SM） and evapotranspiration （ET）, between ET and water vapor condition of boundary layer, between ET and instability condition of boundary layer. The land-atmosphere couplings over South China were weak in climatology, coupling between SM and ET was significant only under dry soil conditions, while the coupling between ET and atmospheric boundary layer were not significant under all soil moisture conditions.

It has been well known that the triple － pattern interannual SST anomalies in the North Atlantic are principally forced by the dominant modes of Atmosphere variability，the North Atlantic Oscillation(NAO)or Arctic Oscillation(AO) ，but to what extent the North Atlantic SST anomalies can affect the Storm Track in the midlatitudes remains to be an issue． Here we estimate the response of North Atlantic Storm Track to SST anomalies by a GCM named CAM3． 0． The atmospheric CAM3． 0 was forced by the triple SST anomalies firstly，then the simulation results in winter (December to January)were compared with the NCEP/NCAR reanalysis data． We found the simulation results could reproduce the anomalies of Atlantic Storm Track and Jet accompanying the AO anomalies． Conclusions can be summarized as follows:when the SSTA was positive(negative) ，the storm track enhanced (weakened) ， and the jet exit region had a meridional displacement to polar (equator) ． The SSTA may influence the storm track through two ways，one is to change the lower atmospheric baroclinicity to affect the intensity of storm track directly，the other is to influence the meridional displacement of jet firstly，and then the jet influence the storm track． The positive feedback effection between eddies and mean flow becomes severe ( weakening)when SSTA is positive (negative) ．