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Evaluation of Precipitable Water Vapor from Four Satellite Products and Four Reanalysis Datasets against GPS Measurements on the Southern Tibetan Plateau

文献类型：期刊论文

作者Wang, Yan1,2; Yang, Kun1,3,4; Pan, Zhengyang1,2; Qin, Jun1; Chen, Deliang5; Lin, Changgui5; Chen, Yingying1,4; Lazhu1,2; Tang, Wenjun1,4; Han, Menglei3
刊名JOURNAL OF CLIMATE
出版日期2017-08-01
卷号30期号:15页码:5699-5713
ISSN号0894-8755
DOI10.1175/JCLI-D-16-0630.1
通讯作者Yang, Kun(yangk@itpcas.ac.cn)
英文摘要The southern Tibetan Plateau (STP) is the region in which water vapor passes from South Asia into the Tibetan Plateau (TP). The accuracy of precipitable water vapor (PWV) modeling for this region depends strongly on the quality of the available estimates of water vapor advection and the parameterization of land evaporation models. While climate simulation is frequently improved by assimilating relevant satellite and reanalysis products, this requires an understanding of the accuracy of these products. In this study, PWV data from MODIS infrared and near-infrared measurements, AIRS Level-2 and Level-3, MERRA, ERA-Interim, JRA-55, and NCEP final reanalysis (NCEP-Final) are evaluated against ground-based GPS measurements at nine stations over the STP, which covers the summer monsoon season from 2007 to 2013. The MODIS infrared product is shown to underestimate water vapor levels by more than 20% (1.84 mm), while the MODIS near-infrared product overestimates them by over 40% (3.52 mm). The AIRS PWV product appears to be most useful for constructing high-resolution and high-quality PWV datasets over the TP; particularly the AIRS Level-2 product has a relatively low bias (0.48 mm) and RMSE (1.83 mm) and correlates strongly with the GPS measurements (R = 0.90). The four reanalysis datasets exhibit similar performance in terms of their correlation coefficients (R = 0.87-0.90), bias (0.72-1.49 mm), and RMSE (2.19-2.35 mm). The key finding is that all the reanalyses have positive biases along the PWV seasonal cycle, which is linked to the well-known wet bias over the TP of current climate models.
WOS关键词ASIAN SUMMER MONSOON ; DIURNAL-VARIATION ; CLIMATE MODELS ; ERA-INTERIM ; SYSTEM ; CYCLE ; RETRIEVALS ; TRANSPORT ; RAINFALL ; MOISTURE
资助项目National Natural Science Foundation of China[91537210] ; National Natural Science Foundation of China[41325019] ; International Partnership Program of Chinese Academy of Sciences[131C11KYSB20160061] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB03030300] ; Swedish VR ; Swedish STINT ; Swedish BECC ; Swedish MERGE
WOS研究方向Meteorology & Atmospheric Sciences
语种英语
出版者AMER METEOROLOGICAL SOC
WOS记录号WOS:000405470400006
资助机构National Natural Science Foundation of China ; International Partnership Program of Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Swedish VR ; Swedish STINT ; Swedish BECC ; Swedish MERGE
源URL[http://ir.igsnrr.ac.cn/handle/311030/62804]  
专题中国科学院地理科学与资源研究所
通讯作者Yang, Kun
作者单位1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Tsinghua Univ, Dept Earth Syst Sci, Beijing, Peoples R China
4.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China
5.Univ Gothenburg, Dept Earth Sci, Reg Climate Grp, Gothenburg, Sweden
6.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing, Peoples R China
7.Chinese Acad Meteorol Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Yan,Yang, Kun,Pan, Zhengyang,et al. Evaluation of Precipitable Water Vapor from Four Satellite Products and Four Reanalysis Datasets against GPS Measurements on the Southern Tibetan Plateau[J]. JOURNAL OF CLIMATE,2017,30(15):5699-5713.
APA Wang, Yan.,Yang, Kun.,Pan, Zhengyang.,Qin, Jun.,Chen, Deliang.,...&Wu, Hui.(2017).Evaluation of Precipitable Water Vapor from Four Satellite Products and Four Reanalysis Datasets against GPS Measurements on the Southern Tibetan Plateau.JOURNAL OF CLIMATE,30(15),5699-5713.
MLA Wang, Yan,et al."Evaluation of Precipitable Water Vapor from Four Satellite Products and Four Reanalysis Datasets against GPS Measurements on the Southern Tibetan Plateau".JOURNAL OF CLIMATE 30.15(2017):5699-5713.

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