The impact of assimilation of Himawari-8 clear-sky data from the new generation geostationary meteorological satellite on the forecast of super Typhoon Hato

Xu Dongmei; Shen Feifei; Li Hong; Liu Ruixia; Wang Yi; Shu Aiqing

doi:10.12284/hyxb2022087

Volume 44 Issue 3

Mar. 2022

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Xu Dongmei，Shen Feifei，Li Hong, et al. The impact of assimilation of Himawari-8 clear-sky data from the new generation geostationary meteorological satellite on the forecast of super Typhoon Hato[J]. Haiyang Xuebao，2022, 44(3)：40–52 doi: 10.12284/hyxb2022087

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The impact of assimilation of Himawari-8 clear-sky data from the new generation geostationary meteorological satellite on the forecast of super Typhoon Hato

doi: 10.12284/hyxb2022087

Xu Dongmei^{1, 3, 4
,},
Shen Feifei^{1, 2
,
,},
Li Hong²,
Liu Ruixia⁵,
Wang Yi⁶,
Shu Aiqing¹

1.
Key Laboratory of Meteorological Disaster, Ministry of Education (KLME)/Joint International Research Laboratory of Climate and Environment Change (ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science & Technology, Nanjing 210044, China
2.
Shanghai Typhoon Institute, China Meteorological Administration, Shanghai 200030, China
3.
The Institute of Atmospheric Environment, China Meteorological Administration, Shenyang 110166, China
4.
Heavy Rain and Drought-Flood Disasters in Plateau and Basin Key Laboratory of Sichuan Province, Chengdu 610225, China
5.
Key Laboratory of Radiometric Calibration and Validation for Environmental Satellite, China Meteorological Administration, National Satellite Meteorological Center, Beijing 100081, China
6.
Jiangsu Meteorological Observatory, Nanjing 210008, China

Received Date: 2020-05-13
Rev Recd Date: 2020-07-28
Publish Date: 2022-03-18

Abstract

Abstract

Based on the Typhoon Hato in 2017, the Himawari-8 AHI infrared radiance data are assimilated under the clear-sky condition in WRFDA system to investigate its impact on the typhoon forecast. The structure, strength, as well as the track forecasts are also studied for the Typhoon Hato. The results show that the clear-sky assimilation of Himawari-8 infrared radiance data provides obvious increment of cyclonic winds in the typhoon core and an obvious increase of typhoon in background field. Compared with the control experiment without assimilating Himawari-8 AHI infrared radiance data, the experiment that assimilates Himawari-8 AHI data strengthens the wind field of Typhoon Hato, 500 hPa pressure field analysis, and typhoon cyclonic circulation. In addition, the AHI radiance assimilation further improves the forecast of track, minimum sea level pressure, and the maximum wind speed of the Typhoon Hato. The average track error, the precipitation distribution, the root mean square error against the conventional data are also improved.
- Himawari-8,
- WRF model,
- 3D Var,
- Typhoon Hato

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References(25)

References

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