Typhoon Maria Precipitation Retrieval and Evolution Based on the Infrared Brightness Temperature of the Feng-Yun 4AAdvanced Geosynchronous Radiation Imager
Joint Authors
Wang, Gen
Wang, Dongyong
Han, Wei
Wang, Kefu
Qiu, Xuexing
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-02-19
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Recognizing the importance and challenges inherent in the remote sensing of precipitation in typhoon monitoring, a study of the Advanced Geosynchronous Radiation Imager (AGRI) data from Feng-Yun 4A on typhoon precipitation was conducted.
First, Typhoon Maria was selected to statistically analyze the AGRI infrared brightness temperature in the “precipitation” and “nonprecipitation” channels of the field of view.
When there was precipitation, the brightness temperature of the AGRI channel changed significantly.
Second, the shrunken locally linear embedding algorithm (SLLE) was adopted to carry out the retrieval of precipitation based on the brightness temperatures of AGRI infrared channels 8–14.
The contribution rate of the brightness temperature at different channels to the objective function of precipitation retrieval model was obtained by the Bayesian model averaging (BMA).
Based on the preliminary experimental “quantification” evaluation index, we concluded that the method adopted in this paper can be used to retrieve precipitation in infrared data and to retrieve the spiral cloud rain bands of a typhoon.
Finally, based on the AGRI channel brightness temperature of a 10.8-micron window channel, we applied the membership degree information of a typhoon’s dominant cloud system from the fuzzy c-means (FCM) clustering method to modify precipitation retrieval results.
The results were used to obtain the main morphological structure of typhoon precipitation.
By further analyzing the temporal variation of dominant cloud system development using the FCM method, we concluded that the brightness temperature gradient can assist in the analysis of the variation of a typhoon’s intensity.
This method can be applied to the continuous retrieval of large-scale precipitation.
Precipitation retrieval via the AGRI can yield indicators for typhoon precipitation warnings and forecasts, thus providing a reliable reference tool for disaster prevention and mitigation.
American Psychological Association (APA)
Wang, Gen& Wang, Kefu& Han, Wei& Wang, Dongyong& Qiu, Xuexing. 2020. Typhoon Maria Precipitation Retrieval and Evolution Based on the Infrared Brightness Temperature of the Feng-Yun 4AAdvanced Geosynchronous Radiation Imager. Advances in Meteorology،Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1126856
Modern Language Association (MLA)
Wang, Gen…[et al.]. Typhoon Maria Precipitation Retrieval and Evolution Based on the Infrared Brightness Temperature of the Feng-Yun 4AAdvanced Geosynchronous Radiation Imager. Advances in Meteorology No. 2020 (2020), pp.1-12.
https://search.emarefa.net/detail/BIM-1126856
American Medical Association (AMA)
Wang, Gen& Wang, Kefu& Han, Wei& Wang, Dongyong& Qiu, Xuexing. Typhoon Maria Precipitation Retrieval and Evolution Based on the Infrared Brightness Temperature of the Feng-Yun 4AAdvanced Geosynchronous Radiation Imager. Advances in Meteorology. 2020. Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1126856
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1126856