An algorithm for estimating downward shortwave radiation from gms 5 visible imagery and its evaluation over china | |
Lu, Ning1,3; Liu, Ronggao; Liu, Jiyuan; Liang, Shunlin2 | |
刊名 | Journal of geophysical research-atmospheres |
2010-09-16 | |
卷号 | 115页码:15 |
ISSN号 | 2169-897X |
DOI | 10.1029/2009jd013457 |
通讯作者 | Lu, ning() |
英文摘要 | This paper presents an operational scheme to estimate downward shortwave radiation (dsr) over china from the visible-band top-of-atmosphere reflectance of the geostationary meteorological satellite (gms) 5 imagery. the proposed algorithm retrieves surface reflectance and atmospheric parameters directly from gms 5 images by searching lookup tables, which are created by the radiative transfer model sbdart and consider the effects of water vapor absorption and surface altitude variations. experiments show that the dsr retrieval is more sensitive to the selection of aerosol type and less to that of the cloud type. uncertainty in the reflectance of a bright surface leads to a considerable dsr retrieval error (+/-(6-9%)). the instantaneous retrieved dsr is evaluated by field measurements on the tibetan plateau, and the daily retrieved dsr is compared with one year's ground-based measurements at 96 stations in china. the results show that the estimated dsr is in good agreement with ground measurements with a correlation coefficient of similar to 0.9 and a bias of 1.5%. root-mean square differences in the daily dsr are 17.7% for all-sky and 13.1% for clear-sky conditions. these results suggest that the proposed method applied to the gms 5 satellite data can accurately estimate temporally and spatially continuous instantaneous and daily dsr. these dsr data sets will be useful for a wide range of applications. |
WOS关键词 | SURFACE SOLAR-RADIATION ; PHOTOSYNTHETICALLY ACTIVE RADIATION ; NARROW-BAND ; VALIDATION ; SYSTEM ; CLOUDS ; RETRIEVAL ; CLIMATE ; AEROSOL ; MODEL |
WOS研究方向 | Meteorology & Atmospheric Sciences |
WOS类目 | Meteorology & Atmospheric Sciences |
语种 | 英语 |
出版者 | AMER GEOPHYSICAL UNION |
WOS记录号 | WOS:000282011600003 |
内容类型 | 期刊论文 |
URI标识 | http://www.corc.org.cn/handle/1471x/2412662 |
专题 | 中国科学院大学 |
通讯作者 | Lu, Ning |
作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China 2.Univ Maryland, Dept Geog, College Pk, MD 20742 USA 3.Chinese Acad Sci, Grad Univ, Beijing 100101, Peoples R China |
推荐引用方式 GB/T 7714 | Lu, Ning,Liu, Ronggao,Liu, Jiyuan,et al. An algorithm for estimating downward shortwave radiation from gms 5 visible imagery and its evaluation over china[J]. Journal of geophysical research-atmospheres,2010,115:15. |
APA | Lu, Ning,Liu, Ronggao,Liu, Jiyuan,&Liang, Shunlin.(2010).An algorithm for estimating downward shortwave radiation from gms 5 visible imagery and its evaluation over china.Journal of geophysical research-atmospheres,115,15. |
MLA | Lu, Ning,et al."An algorithm for estimating downward shortwave radiation from gms 5 visible imagery and its evaluation over china".Journal of geophysical research-atmospheres 115(2010):15. |
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