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Estimation of Downwelling Shortwave and Longwave Radiation in the Tibetan Plateau Under All-Sky Conditions
Zhong, L (Zhong, Lei)1,2,3; Zou, MJ (Zou, Mijun)1; Ma, YM (Ma, Yaoming)4,5,6; Huang, ZY (Huang, Ziyu)1; Xu, KP (Xu, Kepiao)1; Wang, X (Wang, Xian)1; Ge, N (Ge, Nan)1; Cheng, ML (Cheng, Meilin)1
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
2019
Volume124Issue:21Pages:11086-11102
DOI10.1029/2019JD030763
Abstract

Downwelling shortwave radiation (DSWR) and downwelling longwave radiation (DLWR) are two important components of the Earth's surface radiation balance. In this study, the Heliosat method and the parameterization of Crawford and Duchon (1999, , hereafter CD99) were calibrated to make them suitable for estimation of DSWR and DLWR over the Tibetan Plateau (TP). Based on meteorological data, forcing data, and observations from polar-orbiting satellites, the cloud albedo was calculated, and the clear-sky index estimation scheme of the Heliosat method was improved. These improvements were then applied to derive 10-day DSWR under all-sky conditions over the TP by combining the clear-sky shortwave radiation scheme with a clear-sky index. The coefficient of the CD99 parameterization scheme clear-sky DLWR was also calibrated, and 10-day all-sky DLWR was then determined and validated using ground-based measurements. The spatiotemporal distributions of DSWR and DLWR were analyzed in detail. The results showed that the modified methods are efficient and applicable for downward radiation retrieval under all-sky conditions over the TP with a reasonable accuracy. The mean percentage errors for DSWR and DLWR were -4.75% and 0.11%, respectively. The variation in the monthly DSWR (DLWR) showed a convex shape, with a maximum appearing in May (July). The spatial distributions of DLWR showed a southeast-high and northwest-low pattern. As the subsolar point moves northward, DSWR increases gradually and is clearly influenced by the Asian summer monsoon.

Subject AreaAtmospheric Sciences
WOS IDWOS:000494920700001
Language英语
Indexed BySCI
KeywordSurface Solar Irradiance Global Irradiance Wave-radiation Temperature Parameterization Region Modis Co Sensitivity Validation
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
Cooperation Status国内
ISSN2169-897X
Department环境变化与地表过程重点实验室
URL查看原文
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9091
Collection图书馆
Corresponding AuthorZhong, L (Zhong, Lei)
Affiliation1.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei, Anhui, Peoples R China;
2.CAS Ctr Excellence Comparat Planetol, Hefei, Anhui, Peoples R Chi;
3.Jiangsu Collaborat Innovat Ctr Climate Change, Nanjing, Jiangsu, Peoples R China;
4.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing, Peoples R China;
5.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China;
6.Univ Chinese Acad Sci, Beijing, Peoples R China.
Recommended Citation
GB/T 7714
Zhong, L ,Zou, MJ ,Ma, YM ,et al. Estimation of Downwelling Shortwave and Longwave Radiation in the Tibetan Plateau Under All-Sky Conditions[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(21):11086-11102.
APA Zhong, L .,Zou, MJ .,Ma, YM .,Huang, ZY .,Xu, KP .,...&Cheng, ML .(2019).Estimation of Downwelling Shortwave and Longwave Radiation in the Tibetan Plateau Under All-Sky Conditions.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(21),11086-11102.
MLA Zhong, L ,et al."Estimation of Downwelling Shortwave and Longwave Radiation in the Tibetan Plateau Under All-Sky Conditions".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.21(2019):11086-11102.
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