Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1175/1520-0442(2001)014<0045:SDSRBO>2.0.CO;2 |
Satellite-derived surface radiation budget over the African continent. Part I: Estimation of downward solar irradiance and Albedo | |
Ba, MB; Frouin, R; Nicholson, SE; Dedieu, G | |
通讯作者 | Ba, MB |
来源期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2001 |
卷号 | 14期号:1页码:45-58 |
英文摘要 | Downward surface solar irradiance and albedo of the African continent are estimated from Meteosat B2 data at 30-km spatial resolution. The algorithm, based on Dedieu et al.’s approach, is verified against other satellite estimates and ground-based measurements. In the computations, the International Satellite Cloud Climatology Project’s (ISCCP) radiometric calibration is adjusted using the Libyan desert as a reference target of constant reflectance properties. Surface albedo is corrected for sun zenith angle effects, allowing for better detection of seasonal changes due to the vegetation cycle. The estimates obtained with Meteosat B2 data agree generally well with other satellite estimates, although biases of 20 W m(-2) (downward surface solar irradiance) and 0.15 (surface albedo) are obtained in some cases. There is evidence, from comparisons with surface measurements, that the clear-sky downward surface solar irradiance is overestimated over semiarid regions of Africa because of uncertainties in aerosol characteristics. In the Sahel region, where spatial albedo gradients are high, it is advantageous to use 30-km Meteosat B2 products instead of the current, coarser 280-km-resolution ISCCP products. |
类型 | Article |
语种 | 英语 |
国家 | USA ; France |
收录类别 | SCI-E |
WOS记录号 | WOS:000166474100004 |
WOS关键词 | CLOUD CLIMATOLOGY PROJECT ; ECLATS FIELD EXPERIMENT ; SAHARAN AEROSOLS ; PHYSICAL MODEL ; DATA SETS ; VEGETATION ; SAHEL ; VARIABILITY ; METEOSAT ; ISCCP |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
来源机构 | French National Research Institute for Sustainable Development |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/141161 |
作者单位 | (1)Florida State Univ, Dept Meteorol, Tallahassee, FL 32306 USA;(2)Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA;(3)LERTS, CESBIO, Toulouse, France |
推荐引用方式 GB/T 7714 | Ba, MB,Frouin, R,Nicholson, SE,et al. Satellite-derived surface radiation budget over the African continent. Part I: Estimation of downward solar irradiance and Albedo[J]. French National Research Institute for Sustainable Development,2001,14(1):45-58. |
APA | Ba, MB,Frouin, R,Nicholson, SE,&Dedieu, G.(2001).Satellite-derived surface radiation budget over the African continent. Part I: Estimation of downward solar irradiance and Albedo.JOURNAL OF CLIMATE,14(1),45-58. |
MLA | Ba, MB,et al."Satellite-derived surface radiation budget over the African continent. Part I: Estimation of downward solar irradiance and Albedo".JOURNAL OF CLIMATE 14.1(2001):45-58. |
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