Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1109/TGRS.2009.2034530 |
Comparing Operational MSG/SEVIRI Land Surface Albedo Products From Land SAF With Ground Measurements and MODIS | |
Carrer, Dominique; Roujean, Jean-Louis; Meurey, Catherine | |
通讯作者 | Carrer, Dominique |
来源期刊 | IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
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ISSN | 0196-2892 |
出版年 | 2010 |
卷号 | 48期号:4页码:1714-1728 |
英文摘要 | This study is devoted to an assessment of the quality performance of the Satellite Application Facility on Land Surface Analysis (LSA-SAF) albedo products, which are generated from the high frequency of observations now offered by the Meteosat Second Generation (MSG) geostationary satellite series. Land surface albedo products are compared against in situ measurements and the analogous products from the Collection 4 of Moderate Resolution Imaging Spectroradiometer (MODIS) in domains in European and Northern African regions. We find a good consistency with MODIS broadband shortwave and near-infrared directional-hemispherical reflectance (DHR) over midlatitude regions. Comparative statistics indicate biases below 0.01 in absolute and 5% in relative terms, and an average root-mean-square error (RMSE) around 0.03 for all situations, including in snow cases. The comparison for shortwave bihemispherical reflectance (BHR) shows an even better match over herbaceous cover with respective values for bias and RMSE of 0.007 and 0.012. Broadband visible BHR from LSA-SAF overestimates MODIS equivalent albedo product by 20%, which seems to be caused by remaining uncertainties in narrowband-to-broadband conversion, residual aerosol signals, and the use of a different bidirectional reflectance distribution function (BRDF) model. The commendable statistical results obtained over bright desert targets such as Northern Africa are worth noticing. Assuming that the MODIS product is a good reference, a relative bias of 10% can be judged satisfactory for the LSA-SAF snow-free broadband DHR values. In addition, quarter-hourly MSG observations better capture snow episodes, although some discrepancies appear for areas with high vegetation cover. |
英文关键词 | Albedo assessment bidirectional reflectance distribution function (BRDF) geostationary satellite land surface operational processing |
类型 | Article |
语种 | 英语 |
国家 | France |
收录类别 | SCI-E |
WOS记录号 | WOS:000276014800008 |
WOS关键词 | REFLECTANCE DISTRIBUTION FUNCTION ; IN-SITU MEASUREMENTS ; BIDIRECTIONAL REFLECTANCE ; MULTISCALE ANALYSIS ; LAI PRODUCT ; VALIDATION ; RETRIEVALS ; ALGORITHM ; MODELS ; SNOW |
WOS类目 | Geochemistry & Geophysics ; Engineering, Electrical & Electronic ; Remote Sensing ; Imaging Science & Photographic Technology |
WOS研究方向 | Geochemistry & Geophysics ; Engineering ; Remote Sensing ; Imaging Science & Photographic Technology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/164561 |
作者单位 | CNRS, Meteo France Ctr Natl Rech Meteorol, Grp Etud Atmosphere Meteorol, French Ctr Natl Rech Sci,GAME,CNRM, F-31057 Toulouse, France |
推荐引用方式 GB/T 7714 | Carrer, Dominique,Roujean, Jean-Louis,Meurey, Catherine. Comparing Operational MSG/SEVIRI Land Surface Albedo Products From Land SAF With Ground Measurements and MODIS[J],2010,48(4):1714-1728. |
APA | Carrer, Dominique,Roujean, Jean-Louis,&Meurey, Catherine.(2010).Comparing Operational MSG/SEVIRI Land Surface Albedo Products From Land SAF With Ground Measurements and MODIS.IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,48(4),1714-1728. |
MLA | Carrer, Dominique,et al."Comparing Operational MSG/SEVIRI Land Surface Albedo Products From Land SAF With Ground Measurements and MODIS".IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 48.4(2010):1714-1728. |
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