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8 November 2014 ATOVS microwave sounding observation cycling assimilation on a tropical cyclone case in 2012
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Abstract
This study introduces the construction of the satellite observation cycling assimilation system in national satellite meteorological center (NSMC). A typhoon case (1209 Saola ) is chosen to be performed as a testing experiment to check the operation of the cycling assimilation, with a low resolution . Three experiments are designed: control, ATOVS microwave observation assimilation and forecasting with cold starting, assimilation and forecasting with warm starting. Compared with the cold start forecasting, cycling forecasting showed advance in describing more information of the Tropical Cyclones in detail. As for track and intensity prediction, both the two assimilation experiments were prior to control experiment. Especially, the cycling experiment is better than cold experiment in the first one day and third day and the day before landing, but not act well in its peak period, which may suggest that the model couldn’t not match the description of the typhoon Saola at the full developing period or upgrading develop period, with the low resolution in the testing experiments, but also can demonstrate well when it develop slowly or in a relatively steady period.
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Shuang Xi, Peng-ming Dong, Peng Zhang, Gang Ma, and Dan-yu Qin "ATOVS microwave sounding observation cycling assimilation on a tropical cyclone case in 2012", Proc. SPIE 9259, Remote Sensing of the Atmosphere, Clouds, and Precipitation V, 92591E (8 November 2014); https://doi.org/10.1117/12.2068640
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