The process of air-sea fresh water exchange is included successfully in the
Global-Ocean-Atmosphere-Land-System model developed at the State Key Labor
atory of Atmospheric Sciences and Geophysical Fluid Dynamics (LASG). The re
sults of the coupled integration show that the climate drift has been contr
olled successfully. Analyses on the responses of ocean circulation to the c
hanges of surface fresh water or salinity forcing show that the ocean spin-
up stage under flux condition for salinity is the key to the implementation
of air-sea fresh water flux coupling. This study also demonstrates that th
e Modified-Monthly-Flux-Anomaly coupling scheme (MMFA) brought forward by Y
u and Zhang (1998) is suitable not only for daily air-sea heat flux couplin
g but also for daily fresh water flux coupling.