FY-3A SATELLITE MICROWAVE DATA ASSIMILATION EXPERIMENTS IN TROPICAL CYCLONE FORECAST

YANG Yin-ming; DU Ming-bin; ZHANG Jie

Abstract:

China's new generation of polar-orbiting meteorological satellite FY-3A was successfully launched on May 26, 2008, carrying microwave sounding devices which had similar performance to ATOVS of NOAA series. In order to study the application of microwave sounding data in numerical prediction of typhoons and to improve typhoon forecasting, we assimilated data directly for numerical forecasting of the track and intensity of the 2009 typhoon Morakot (0908) based on the WRF-3DVar system. Results showed that the initial fields of the numerical model due to direct assimilation of FY-3A microwave sounding data was improved much more than that due to assimilation of conventional observations alone, and the improvement was especially significant over the ocean, which is always without conventional observations. The model initial fields were more reasonable in reflecting the initial situation of typhoon circulation as well as temperature and humidity conditions, and typhoon central position at sea was also adjusted. Through direct 3DVar assimilation of FY-3A microwave data, the regional mesoscale model improves the forecasting of typhoon track. Therefore, the FY-3A microwave data could efficiently improve the numerical prediction of typhoons.

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YANG Yin-ming, DU Ming-bin, ZHANG Jie. FY-3A SATELLITE MICROWAVE DATA ASSIMILATION EXPERIMENTS IN TROPICAL CYCLONE FORECAST [J]. Journal of Tropical Meteorology, 2013, 19(3): 297-304.

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FY-3A SATELLITE MICROWAVE DATA ASSIMILATION EXPERIMENTS IN TROPICAL CYCLONE FORECAST

Shanghai Meteorological Center, Shanghai 200030 China

Shanghai Center for Satellite Remote Sensing and Application, Shanghai 201100 China School of Atmospheric Science, Nanjing University, Nanjing, 210093 China

Shanghai Center for Satellite Remote Sensing and Application, Shanghai 201100 China

Received Date: 2012-05-24

Rev Recd Date: 2013-05-24

Abstract: China's new generation of polar-orbiting meteorological satellite FY-3A was successfully launched on May 26, 2008, carrying microwave sounding devices which had similar performance to ATOVS of NOAA series. In order to study the application of microwave sounding data in numerical prediction of typhoons and to improve typhoon forecasting, we assimilated data directly for numerical forecasting of the track and intensity of the 2009 typhoon Morakot (0908) based on the WRF-3DVar system. Results showed that the initial fields of the numerical model due to direct assimilation of FY-3A microwave sounding data was improved much more than that due to assimilation of conventional observations alone, and the improvement was especially significant over the ocean, which is always without conventional observations. The model initial fields were more reasonable in reflecting the initial situation of typhoon circulation as well as temperature and humidity conditions, and typhoon central position at sea was also adjusted. Through direct 3DVar assimilation of FY-3A microwave data, the regional mesoscale model improves the forecasting of typhoon track. Therefore, the FY-3A microwave data could efficiently improve the numerical prediction of typhoons.

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Reference (15)

[1]	VELDEN C S, W L SMITH. Monitoring tropical cyclone evolution with NOAA satellite microwave observations [J]. Climate Appl. Meteor., 1983, 22: 714-724.
[2]	KIDDER S Q, GOLDBERG M D, ZEHR R M, et al．Satellite analysis of TCs using the advanced microwave sounding unit (AMSU) [J]．Bull. Amer. Meteor. Soc., 2000, 81(6): 1241-1258.
[3]	QIU Hong, FANG Xiang, GU Song-yan, et al. Analysis of features of tropical cyclone structure with AMSU [J]. Appl. Meteor. Sci., 2007, 18(6): 810-820.
[4]	DERBER J C, WU W S. The use of TOVS cloud-cleared radiances in the NCEP SSI analysis system [J]. Mon. Wea. Rev., 1998, 126: 2287-2299.
[5]	EYRE J R, KELLY G A, McNALLY A D, et al. Assimilation of TOVS radiance information through one dimensional variational analysis [J]. Quart. J. Roy. Meteor. Soc., 1993, 119(514): 1427-1463.
[6]	OKAMOTO K, KAZUMORI M, OWADA H. The assimilation of ATOVS radiances in the JMA global analysis system [J]. J. Meteor. Soc. Japan, 2005, 83(2): 201-217.
[7]	MIN Ai-rong, LIU Yi-shan, WANG Xiao-fang, et al. Analysis of the impact of ATOVS variational assimilation on a heavy rain forecast [J]. J. Trop. Meteor., 2009, 25(3): 314-320.
[8]	ZHOU Hui, ZHU Guo-qiang, CHEN Jiang-min, et al. Experiment of the impact from GRAPES model on numerical simulation and initial value of Southwest Monsoon outbreak [J]. J. Trop. Meteor., 2010, 26(1): 98-104.
[9]	PAN Ning, DONG Chao-hua, ZHANG Jian. Research into direct variational assimilation experiment of ATOVS radiance data [J]. J. Meteor., 2003, 61(2): 226-236.
[10]	ZHANG Hua, CHOU Ji-fan, QIU Chong-jian. Analysis into satellite observation assimilation of the structure of northwest Pacific typhoon "Rammasun" [J]. Chin. Sci. Bull., 2004, 49(5): 493-498.
[11]	ZHANG Hua, XUE Ji-shan, ZHU Guo-fu, et al．Application of direct assimilation of ATOVS microwave radiances to typhoon track prediction [J]. Adv. Atmos. Sci., 2004, 21(2): 283-290.
[12]	ZHU Guo-fu, XUE Ji-shan, ZHANG Hua, et al, Direct assimilation of satellite radiance data in GRAPES variational assimilation system [J]. Chin. Sci. Bull., 2008, 53(20): 2424 -2427.
[13]	WANG Zong-hao, Direct application of satellite radiation rate in numerical weather prediction [J]. Appl. Meteor. Sci., 1995, 6(1): 101-108.
[14]	HARRIS B A, KELLY G. A satellite radiance bias correction scheme for radiance assimilation [J]. Quart. J. Roy. Meteor. Soc., 2001, 127: 1453-1468.
[15]	LIU Zhi-quan, ZHANG Feng-fing, WU Xue-bao, et al, Researches into radiation bias correction of ATOVS [J]. J. Meteor., 2007, 65(1): 113-123.

FY-3A SATELLITE MICROWAVE DATA ASSIMILATION EXPERIMENTS IN TROPICAL CYCLONE FORECAST

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