An enhanced convection-wind-evaporation feedback in a superparameterization GCM (SP-GCM) depiction of the Asian summer monsoon
نویسندگان
چکیده
[1] Both the Colorado State University (CSU) and Goddard superparameterization GCM (SP-GCM) simulate a superactive Asian summer monsoon with unrealistically enhanced levels of precipitation. The underlying physical mechanism for this monsoon bias in the CSU SP-GCM is shown to involve an enhanced convection-wind-evaporation feedback. The feedback process is studied using two experiments with different fixed specifications of surface evaporation. A regional analysis of an area that exhibits excessive precipitation offers a glimpse of the transient nature of the feedback. Finally, we discuss the broader relevance of the feedback study to climate modeling. Citation: Luo, Z., and G. L. Stephens (2006), An enhanced convection-wind-evaporation feedback in a superparameterization GCM (SP-GCM) depiction of the Asian summer monsoon, Geophys. Res. Lett., 33, L06707, doi:10.1029/2005GL025060.
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