Hyperspectral Infrared Atmospheric Sounder (HIRAS) Atmospheric Sounding System
Accurate atmospheric temperature and moisture profiles are essential for weather forecasts and research. Satellite-based hyperspectral infrared observations are meaningful in detecting atmospheric profiles, especially over oceans where conventional observations can seldom be used. In this study, a H...
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| Format: | Article |
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MDPI AG
2022-08-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/14/16/3882 |
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| author | Shuqun Li Hao Hu Chenggege Fang Sichen Wang Shangpei Xun Binfang He Wenyu Wu Yanfeng Huo |
| author_facet | Shuqun Li Hao Hu Chenggege Fang Sichen Wang Shangpei Xun Binfang He Wenyu Wu Yanfeng Huo |
| author_sort | Shuqun Li |
| collection | DOAJ |
| description | Accurate atmospheric temperature and moisture profiles are essential for weather forecasts and research. Satellite-based hyperspectral infrared observations are meaningful in detecting atmospheric profiles, especially over oceans where conventional observations can seldom be used. In this study, a HIRAS (Hyperspectral Infrared Atmospheric Sounder) Atmospheric Sounding System (HASS) was introduced, which retrieves atmospheric temperature and moisture profiles using a one-dimension variational scheme based on HIRAS observations. A total of 274 channels were optimally selected from the entire HIRAS spectrum through information entropy analyses, and a group of retrieval experiments were independently performed for different HIRAS fields of views (FOVs). Compared with the ECMWF reanalysis data version-5 (ERA5), the RMSEs of temperature (relative humidity) for low-, mid-, and high-troposphere layers were 1.5 K (22.3%), 1.0 K (33.2%), and 1.3 K (38.5%), respectively, which were similar in magnitude to those derived from other hyperspectral infrared sounders. Meanwhile, the retrieved temperature RMSEs with respect to the satellite radio occultation (RO) products increased to 1.7 K, 1.8 K, and 1.9 K for the low-, mid-, and high-troposphere layers, respectively, which could be attributed to the accurate RO temperature products in the upper atmospheres. It was also found that the RMSE varied with the FOVs and latitude, which may be caused by the current angle-dependent bias correction and unique background profiles. |
| first_indexed | 2024-03-09T12:41:04Z |
| format | Article |
| id | doaj.art-9e49fe0f2851466abd1014f2009ef25d |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-09T12:41:04Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-9e49fe0f2851466abd1014f2009ef25d2023-11-30T22:18:46ZengMDPI AGRemote Sensing2072-42922022-08-011416388210.3390/rs14163882Hyperspectral Infrared Atmospheric Sounder (HIRAS) Atmospheric Sounding SystemShuqun Li0Hao Hu1Chenggege Fang2Sichen Wang3Shangpei Xun4Binfang He5Wenyu Wu6Yanfeng Huo7School of Urban Construction and Transportation, Hefei University, Hefei 230031, ChinaCMA Earth System Modeling and Prediction Center (CEMC), China Meteorological Administration, Beijing 100081, ChinaCMA Earth System Modeling and Prediction Center (CEMC), China Meteorological Administration, Beijing 100081, ChinaKey Laboratory for Atmospheric Sciences & Remote Sensing of Anhui Province, Anhui Institute of Meteorological Sciences, Hefei 230031, ChinaKey Laboratory for Atmospheric Sciences & Remote Sensing of Anhui Province, Anhui Institute of Meteorological Sciences, Hefei 230031, ChinaKey Laboratory for Atmospheric Sciences & Remote Sensing of Anhui Province, Anhui Institute of Meteorological Sciences, Hefei 230031, ChinaKey Laboratory for Atmospheric Sciences & Remote Sensing of Anhui Province, Anhui Institute of Meteorological Sciences, Hefei 230031, ChinaKey Laboratory for Atmospheric Sciences & Remote Sensing of Anhui Province, Anhui Institute of Meteorological Sciences, Hefei 230031, ChinaAccurate atmospheric temperature and moisture profiles are essential for weather forecasts and research. Satellite-based hyperspectral infrared observations are meaningful in detecting atmospheric profiles, especially over oceans where conventional observations can seldom be used. In this study, a HIRAS (Hyperspectral Infrared Atmospheric Sounder) Atmospheric Sounding System (HASS) was introduced, which retrieves atmospheric temperature and moisture profiles using a one-dimension variational scheme based on HIRAS observations. A total of 274 channels were optimally selected from the entire HIRAS spectrum through information entropy analyses, and a group of retrieval experiments were independently performed for different HIRAS fields of views (FOVs). Compared with the ECMWF reanalysis data version-5 (ERA5), the RMSEs of temperature (relative humidity) for low-, mid-, and high-troposphere layers were 1.5 K (22.3%), 1.0 K (33.2%), and 1.3 K (38.5%), respectively, which were similar in magnitude to those derived from other hyperspectral infrared sounders. Meanwhile, the retrieved temperature RMSEs with respect to the satellite radio occultation (RO) products increased to 1.7 K, 1.8 K, and 1.9 K for the low-, mid-, and high-troposphere layers, respectively, which could be attributed to the accurate RO temperature products in the upper atmospheres. It was also found that the RMSE varied with the FOVs and latitude, which may be caused by the current angle-dependent bias correction and unique background profiles.https://www.mdpi.com/2072-4292/14/16/3882Hyperspectral Infrared Atmospheric Sounder (HIRAS)one-dimensional variational (1D-Var)temperature and moisture profile |
| spellingShingle | Shuqun Li Hao Hu Chenggege Fang Sichen Wang Shangpei Xun Binfang He Wenyu Wu Yanfeng Huo Hyperspectral Infrared Atmospheric Sounder (HIRAS) Atmospheric Sounding System Remote Sensing Hyperspectral Infrared Atmospheric Sounder (HIRAS) one-dimensional variational (1D-Var) temperature and moisture profile |
| title | Hyperspectral Infrared Atmospheric Sounder (HIRAS) Atmospheric Sounding System |
| title_full | Hyperspectral Infrared Atmospheric Sounder (HIRAS) Atmospheric Sounding System |
| title_fullStr | Hyperspectral Infrared Atmospheric Sounder (HIRAS) Atmospheric Sounding System |
| title_full_unstemmed | Hyperspectral Infrared Atmospheric Sounder (HIRAS) Atmospheric Sounding System |
| title_short | Hyperspectral Infrared Atmospheric Sounder (HIRAS) Atmospheric Sounding System |
| title_sort | hyperspectral infrared atmospheric sounder hiras atmospheric sounding system |
| topic | Hyperspectral Infrared Atmospheric Sounder (HIRAS) one-dimensional variational (1D-Var) temperature and moisture profile |
| url | https://www.mdpi.com/2072-4292/14/16/3882 |
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