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

Abstract—In this paper, a research version of the Meteorological W[\6h Zv  
Service of Canada (MSC) Global Environmental Multiscale  oBkhb  
(GEM) mesoglobal weather forecasts model is evaluated by comparing p%3z*2,(  
the simulated Special Sensor Microwave/Imager brightness T+<.KvO-  
temperatures (Tbs) with the observed ones. Several comparisons \l~^dn}  
based on two 15-day periods, one in winter and one in summer, aj1]ZT\  
have been done. Results are compared to those obtained for a study zsg\|=P  
conducted on the European Centre for Medium-Range Weather <(xqw<)  
Forecast (ECMWF) model. The overall performance of the GEM nF,F#V8l  
model is similar to that of the 2001 version of the ECMWF model. G.rz6o;  
The model appears to simulate with realism the large-scale rainy >qmCjY1  
systems but with frequent mislocations. Moreover, the model has N,Eap KG  
a tendency to produce intense small-scale precipitating areas that _p-e)J$7  
are not observed. The occurrence frequency of cloud and rain is e7RgA1  
overestimated by the model. Finally, these results are encouraging cq4~(PXTg  
enough to continue investigating the assimilation of Tbs in cloudy Q
7_5  
and rainy skies at MSC. I,{YxY[$7  
Index Terms—Foreca .. 5qb93E"C  
)XN_|zCk  

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