Reprocessing 12-yr Microwave Humidity Sounder Historical Data of Fengyun-3 Satellites

Guo, Yang; Dou, Fangli; Wu, Qiong; He, Jieying; Zhang, Shengwei; Wang, Zhenzhan; Gu, Songyan; Zhang, Peng

doi:10.1007/s13351-022-1110-x

Fengyun Meteorological Satellite Climate Data Records (CDR) Reprocessing: Methods, Products, and Applications
Published: 06 May 2022

Reprocessing 12-yr Microwave Humidity Sounder Historical Data of Fengyun-3 Satellites

Yang Guo^1,2,
Fangli Dou^1,2,
Qiong Wu^1,2,
Jieying He³,
Shengwei Zhang³,
Zhenzhan Wang³,
Songyan Gu^1,2 &
Peng Zhang^1,2

Journal of Meteorological Research volume 36, pages 261–270 (2022)Cite this article

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Abstract

Atmospheric water vapor is an essential climate variable (ECV) with extensive spatial and temporal variations. Microwave humidity observations from meteorological satellites provide important information for climate system variables, including atmospheric water vapor and precipitable water, and assimilation in numerical weather prediction (NWP) and reanalysis. As one of the payloads onboard China’s second-generation polar-orbiting operational meteorological Fengyun-3 (FY-3) satellites, the Microwave Humidity Sounder (MWHS) has been continuously observing the global humidity since 2008. The reprocessing of historical FY-3 MWHS data is documented in detail in this study. After calibrating and correcting the data, the quality of the reprocessed dataset is evaluated and the improvement is shown in this study. The results suggest that MWHS observations bias is reduced to approximately 0.8 K, compared with METOP-A Microwave Humidity Sounder (MHS). The temporal variability of MWHS is highly correlated with the instrument temperature. After reprocessing, the scene temperature dependency is mitigated for all 183 GHz channels, and the consistency and stability between FY-3A/B/C are also improved.

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Funding

Supported by the National Key Research and Development Program of China (2018YFB0504900 and 2018YFB0504902) and National Natural Science Foundation of China (41775020, 42005105, and 41905034).

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Authors and Affiliations

Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites, National Satellite Meteorological Center (National Center for Space Weather), China Meteorological Administration, Beijing, 100081, China
Yang Guo, Fangli Dou, Qiong Wu, Songyan Gu & Peng Zhang
Innovation Center for Fengyun Meteorological Satellite (FYSIC), China Meteorological Administration, Beijing, 100081, China
Yang Guo, Fangli Dou, Qiong Wu, Songyan Gu & Peng Zhang
National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China
Jieying He, Shengwei Zhang & Zhenzhan Wang

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Yang Guo
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Fangli Dou
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Qiong Wu
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Jieying He
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Shengwei Zhang
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Zhenzhan Wang
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Songyan Gu
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Peng Zhang
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Correspondence to Fangli Dou.

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Guo, Y., Dou, F., Wu, Q. et al. Reprocessing 12-yr Microwave Humidity Sounder Historical Data of Fengyun-3 Satellites. J Meteorol Res 36, 261–270 (2022). https://doi.org/10.1007/s13351-022-1110-x

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Received: 15 June 2021
Accepted: 30 December 2021
Published: 06 May 2022
Issue Date: April 2022
DOI: https://doi.org/10.1007/s13351-022-1110-x

Key words

Fengyun-3
Microwave Humidity Sounder
historical data reprocessing