[仿真]Simulation of Satellite Passive-Microwave Observations in Rainy Atmospheres

Abstract—In this paper, a research version of the Meteorological 0yk]o5a++  
Service of Canada (MSC) Global Environmental Multiscale cN/6SGHK  
(GEM) mesoglobal weather forecasts model is evaluated by comparing KI"#f$2&  
the simulated Special Sensor Microwave/Imager brightness Snj'y,p[  
temperatures (Tbs) with the observed ones. Several comparisons 5'OrHk;u  
based on two 15-day periods, one in winter and one in summer, Cj
n#00  
have been done. Results are compared to those obtained for a study g|
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conducted on the European Centre for Medium-Range Weather
x]}^v#  
Forecast (ECMWF) model. The overall performance of the GEM /C
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model is similar to that of the 2001 version of the ECMWF model. Vr3Zu{&2  
The model appears to simulate with realism the large-scale rainy Kg{+T`  
systems but with frequent mislocations. Moreover, the model has `+]Qz =}  
a tendency to produce intense small-scale precipitating areas that }7b%HTF=  
are not observed. The occurrence frequency of cloud and rain is ?g_3 [Fk  
overestimated by the model. Finally, these results are encouraging ROH|PKb7  
enough to continue investigating the assimilation of Tbs in cloudy g9 .Q<JwO  
and rainy skies at MSC. !z\h|wU+  
Index Terms—Foreca .. j`{?OYD  
">\?&0  

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