Impacts of the All-Sky Assimilation of FY-3C and FY-3D MWHS-2 Radiances on Analyses and Forecasts of Typhoon Hagupit

Author:

Chen Keyi1ORCID,Chen Zhenxuan1,Xian Zhipeng23ORCID,Li Guancheng4

Affiliation:

1. School of the Atmospheric Sciences, Chengdu University of Information Technology, Chengdu 610225, China

2. International Center for Climate and Environment Sciences, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China

3. University of Chinese Academy of Sciences, Beijing 100049, China

4. Eco-Environmental Monitoring and Research Center, Pearl River Valley and South China Sea Ecology and Environment, Guangzhou 510611, China

Abstract

With the Microwave Humidity Sounder-2 (MWHS-2)/Fengyun (FY)-3D in operation, this is the first study to evaluate the impact of a joint assimilation of MWHS-2 radiances under all-sky conditions from both the FY-3C and FY-3D satellites on typhoon forecasting within regional areas. In this study, Typhoon Hagupit in 2020 was chosen to investigate the impacts of assimilating MWHS-2 radiances; the forecasting performances of the joint assimilation method were slightly better than the experiments assimilating MWHS-2 observations from FY-3C or FY-3D only, and the results of the latter two experiments were comparable, especially in terms of the landfall location of Hagupit. With additional assimilated cloud- and precipitation-affected MWHS-2 observations, improved typhoon track and intensity forecasts as well as forecasts of the precipitation caused by Hagupit were achieved due to the improved analyses of relative humidity, temperature and wind fields around Hagupit compared to the clear-sky assimilation experiments. In addition, the channel-selection scheme evidently affected the forecasting performance; that is, the radiances from the MWHS-2 118 GHz and 183 GHz channels provided opposite results in terms of the Hagupit track, and this finding needs further investigation in the future.

Funder

National Natural Science Foundation of China

“Earth System Science Numerical Simulator Facility”

Publisher

MDPI AG

Subject

General Earth and Planetary Sciences

Reference62 articles.

1. Multiple-scattering microwave radiative transfer for data assimilation applications;Bauer;Q. J. R. Meteorol. Soc.,2006

2. Direct 4D-Var assimilation of all-sky radiances. Part I: Implementation;Bauer;Q. J. R. Meteorol. Soc.,2010

3. Eight years of high cloud statistics using HIRS;Wylie;J. Clim.,1999

4. Kim, M.-J., English, S., Bauer, P., Geer, A., and Okamoto, K. (2023, March 16). Comparison of Progress in Assimilating Cloud-Affected Microwave Radiances at NCEP, ECMWF, JMA and the Met Office. Visiting Scientist Mission Report, NWP SAF EUMETSAT, 23th, Oct 2008. Available online: https://www.nwpsaf.eu/publications/vs_reports/nwpsaf-mo-vs-037.pdf.

5. A note on the occurrence of cloud in meteorologically sensitive areas and the implications for advanced infrared sounders;McNally;Q. J. R. Meteorol. Soc. A J. Atmos. Sci. Appl. Meteorol. Phys. Oceanogr.,2002

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