Impact of All-Sky Assimilation of Multichannel Observations from Fengyun-3F MWHS-II on Typhoon Forecasting
All-sky radiance assimilation can increase the utilization of satellite observations in cloudy regions and improve typhoon forecasts. This study focuses on the newly launched FengYun-3F satellite equipped with the Microwave Humidity Sounder II (MWHS-II) and develops an all-sky assimilation capabilit...
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MDPI AG
2025-06-01
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| Online Access: | https://www.mdpi.com/2072-4292/17/12/2056 |
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| author | Tianheng Wang Wei Sun Fan Ping |
| author_facet | Tianheng Wang Wei Sun Fan Ping |
| author_sort | Tianheng Wang |
| collection | DOAJ |
| description | All-sky radiance assimilation can increase the utilization of satellite observations in cloudy regions and improve typhoon forecasts. This study focuses on the newly launched FengYun-3F satellite equipped with the Microwave Humidity Sounder II (MWHS-II) and develops an all-sky assimilation capability for its radiance data. A series of assimilation experiments were conducted to evaluate their impacts on the forecast of Typhoon Yagi (2024), demonstrating that all-sky assimilation leads to reductions in track error (23.14%) and improvements in precipitation forecasts (Equitable Threat Score increase of 16.92%) compared to clear-sky assimilation. Furthermore, a detailed comparison of assimilation experiments shows that using only the 183 GHz humidity channels yields limited improvement in tropospheric humidity, whereas assimilating the 118 GHz temperature channels significantly enhances temperature and wind forecasts. Combined assimilation of both frequency bands synergistically maintains accurate track and intensity predictions while further improving precipitation prediction. These findings demonstrate the value of multichannel all-sky assimilation and inform future satellite data assimilation strategies. |
| format | Article |
| id | doaj-art-dacfaabdf68c4a52a517f949f8607a80 |
| institution | DOAJ |
| issn | 2072-4292 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj-art-dacfaabdf68c4a52a517f949f8607a802025-08-20T03:16:39ZengMDPI AGRemote Sensing2072-42922025-06-011712205610.3390/rs17122056Impact of All-Sky Assimilation of Multichannel Observations from Fengyun-3F MWHS-II on Typhoon ForecastingTianheng Wang0Wei Sun1Fan Ping2School of Remote Sensing and Geomatics Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, ChinaState Key Laboratory of Severe Weather Meteorological Science and Technology, Chinese Academy of Meteorological Sciences (CAMS), Beijing 100081, ChinaKey Laboratory of Cloud-Precipitation Physics and Severe Storms (LACS), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaAll-sky radiance assimilation can increase the utilization of satellite observations in cloudy regions and improve typhoon forecasts. This study focuses on the newly launched FengYun-3F satellite equipped with the Microwave Humidity Sounder II (MWHS-II) and develops an all-sky assimilation capability for its radiance data. A series of assimilation experiments were conducted to evaluate their impacts on the forecast of Typhoon Yagi (2024), demonstrating that all-sky assimilation leads to reductions in track error (23.14%) and improvements in precipitation forecasts (Equitable Threat Score increase of 16.92%) compared to clear-sky assimilation. Furthermore, a detailed comparison of assimilation experiments shows that using only the 183 GHz humidity channels yields limited improvement in tropospheric humidity, whereas assimilating the 118 GHz temperature channels significantly enhances temperature and wind forecasts. Combined assimilation of both frequency bands synergistically maintains accurate track and intensity predictions while further improving precipitation prediction. These findings demonstrate the value of multichannel all-sky assimilation and inform future satellite data assimilation strategies.https://www.mdpi.com/2072-4292/17/12/2056all-sky data assimilationFengyun 3typhoon forecastsmicrowave remote sensing |
| spellingShingle | Tianheng Wang Wei Sun Fan Ping Impact of All-Sky Assimilation of Multichannel Observations from Fengyun-3F MWHS-II on Typhoon Forecasting Remote Sensing all-sky data assimilation Fengyun 3 typhoon forecasts microwave remote sensing |
| title | Impact of All-Sky Assimilation of Multichannel Observations from Fengyun-3F MWHS-II on Typhoon Forecasting |
| title_full | Impact of All-Sky Assimilation of Multichannel Observations from Fengyun-3F MWHS-II on Typhoon Forecasting |
| title_fullStr | Impact of All-Sky Assimilation of Multichannel Observations from Fengyun-3F MWHS-II on Typhoon Forecasting |
| title_full_unstemmed | Impact of All-Sky Assimilation of Multichannel Observations from Fengyun-3F MWHS-II on Typhoon Forecasting |
| title_short | Impact of All-Sky Assimilation of Multichannel Observations from Fengyun-3F MWHS-II on Typhoon Forecasting |
| title_sort | impact of all sky assimilation of multichannel observations from fengyun 3f mwhs ii on typhoon forecasting |
| topic | all-sky data assimilation Fengyun 3 typhoon forecasts microwave remote sensing |
| url | https://www.mdpi.com/2072-4292/17/12/2056 |
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