Performance Evaluation and Noise Mitigation of the FY-3E Microwave Humidity Sounder
Fengyun-3E, which is equipped with MicroWave Humidity Sounder 2 (MWHS-2) for detecting both temperature and humidity, is China’s latest polar orbiting meteorological satellite and China’s first satellite in early-morning orbit. The observation bias and observation error characteristics of MWHS-2 are...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/14/19/4835 |
| _version_ | 1797477161180856320 |
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| author | Jiali Mao Zhengkun Qin Juan Li Yang Han Jing Huang |
| author_facet | Jiali Mao Zhengkun Qin Juan Li Yang Han Jing Huang |
| author_sort | Jiali Mao |
| collection | DOAJ |
| description | Fengyun-3E, which is equipped with MicroWave Humidity Sounder 2 (MWHS-2) for detecting both temperature and humidity, is China’s latest polar orbiting meteorological satellite and China’s first satellite in early-morning orbit. The observation bias and observation error characteristics of MWHS-2 are evaluated by using ERA-5 as the background field. The results show that the biases range from −4 to 2 K, and the observation errors are within 1.5 K except for the window channels. A further analysis of the dependence on the scanning angles indicates that observation errors for the window channels and the 118-GHz channels increase with decreasing scanning angles. Observation errors of the window channels and water vapor channels are also latitudinally dependent, and the maximum errors in the high latitudes reach 2.0 K, while those in the tropical regions are approximately 0.8 K. In addition, the observed brightness temperature of FY-3E MWHS-2 is accompanied by striping noises along the track and high-frequency oscillation noises along the scanlines. The noise mitigation results show that both noises are approximately 0.2 K. |
| first_indexed | 2024-03-09T21:13:42Z |
| format | Article |
| id | doaj.art-1db48f33d948482ebce7aea176471cab |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-09T21:13:42Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-1db48f33d948482ebce7aea176471cab2023-11-23T21:39:30ZengMDPI AGRemote Sensing2072-42922022-09-011419483510.3390/rs14194835Performance Evaluation and Noise Mitigation of the FY-3E Microwave Humidity SounderJiali Mao0Zhengkun Qin1Juan Li2Yang Han3Jing Huang4Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing 211544, ChinaCollaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing 211544, ChinaCMA Earth System Modeling and Prediction Centre, Beijing 100081, ChinaCMA Earth System Modeling and Prediction Centre, Beijing 100081, ChinaCMA Earth System Modeling and Prediction Centre, Beijing 100081, ChinaFengyun-3E, which is equipped with MicroWave Humidity Sounder 2 (MWHS-2) for detecting both temperature and humidity, is China’s latest polar orbiting meteorological satellite and China’s first satellite in early-morning orbit. The observation bias and observation error characteristics of MWHS-2 are evaluated by using ERA-5 as the background field. The results show that the biases range from −4 to 2 K, and the observation errors are within 1.5 K except for the window channels. A further analysis of the dependence on the scanning angles indicates that observation errors for the window channels and the 118-GHz channels increase with decreasing scanning angles. Observation errors of the window channels and water vapor channels are also latitudinally dependent, and the maximum errors in the high latitudes reach 2.0 K, while those in the tropical regions are approximately 0.8 K. In addition, the observed brightness temperature of FY-3E MWHS-2 is accompanied by striping noises along the track and high-frequency oscillation noises along the scanlines. The noise mitigation results show that both noises are approximately 0.2 K.https://www.mdpi.com/2072-4292/14/19/4835Fengyun-3EMWHS-2data evaluationnoise mitigation |
| spellingShingle | Jiali Mao Zhengkun Qin Juan Li Yang Han Jing Huang Performance Evaluation and Noise Mitigation of the FY-3E Microwave Humidity Sounder Remote Sensing Fengyun-3E MWHS-2 data evaluation noise mitigation |
| title | Performance Evaluation and Noise Mitigation of the FY-3E Microwave Humidity Sounder |
| title_full | Performance Evaluation and Noise Mitigation of the FY-3E Microwave Humidity Sounder |
| title_fullStr | Performance Evaluation and Noise Mitigation of the FY-3E Microwave Humidity Sounder |
| title_full_unstemmed | Performance Evaluation and Noise Mitigation of the FY-3E Microwave Humidity Sounder |
| title_short | Performance Evaluation and Noise Mitigation of the FY-3E Microwave Humidity Sounder |
| title_sort | performance evaluation and noise mitigation of the fy 3e microwave humidity sounder |
| topic | Fengyun-3E MWHS-2 data evaluation noise mitigation |
| url | https://www.mdpi.com/2072-4292/14/19/4835 |
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