An Algorithm for Retrieving Precipitable Water Vapor over Land Based on Passive Microwave Satellite Data
Joint Authors
Zhou, Fang-Cheng
Song, Xiaoning
Leng, Pei
Wu, Hua
Tang, Bo-Hui
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-02-03
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Precipitable water vapor (PWV) is one of the most variable components of the atmosphere in both space and time.
In this study, a passive microwave-based retrieval algorithm for PWV over land without land surface temperature (LST) data was developed.
To build the algorithm, two assumptions exist: (1) land surface emissivities (LSE) at two adjacent frequencies are equal and (2) there are simple parameterizations that relate transmittance, atmospheric effective radiating temperature, and PWV.
Error analyses were performed using radiosonde sounding observations from Zhangye, China, and CE318 measurements of Dalanzadgad (43°34′37′′N, 104°25′8′′E) and Singapore (1°17′52′′N, 103°46′48′′E) sites from Aerosol Robotic Network (AERONET), respectively.
In Zhangye, the algorithm had a Root Mean Square Error (RMSE) of 4.39 mm and a bias of 0.36 mm on cloud-free days, while on cloudy days there was an RMSE of 4.84 mm and a bias of 0.52 mm because of the effect of liquid water in clouds.
The validations in Dalanzadgad and Singapore sites showed that the retrieval algorithm had an RMSE of 4.73 mm and a bias of 0.84 mm and the bigger errors appeared when the water vapor was very dry or very moist.
American Psychological Association (APA)
Zhou, Fang-Cheng& Song, Xiaoning& Leng, Pei& Wu, Hua& Tang, Bo-Hui. 2016. An Algorithm for Retrieving Precipitable Water Vapor over Land Based on Passive Microwave Satellite Data. Advances in Meteorology،Vol. 2016, no. 2016, pp.1-11.
https://search.emarefa.net/detail/BIM-1095452
Modern Language Association (MLA)
Zhou, Fang-Cheng…[et al.]. An Algorithm for Retrieving Precipitable Water Vapor over Land Based on Passive Microwave Satellite Data. Advances in Meteorology No. 2016 (2016), pp.1-11.
https://search.emarefa.net/detail/BIM-1095452
American Medical Association (AMA)
Zhou, Fang-Cheng& Song, Xiaoning& Leng, Pei& Wu, Hua& Tang, Bo-Hui. An Algorithm for Retrieving Precipitable Water Vapor over Land Based on Passive Microwave Satellite Data. Advances in Meteorology. 2016. Vol. 2016, no. 2016, pp.1-11.
https://search.emarefa.net/detail/BIM-1095452
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1095452