Preliminary validation of GLASS-DSSR products using surface measurements collected in arid and semi-arid regions of China (SCI)
文献类型：期刊论文
| 作者 | Huang G. H. ; Wang W. Z. ; Zhang X. T. ; Liang S. L. ; Liu S. M. ; Zhao T. B. ; Feng J. M. ; Ma Z. G. |
| 刊名 | International Journal of Digital Earth
 |
| 出版日期 | 2013 |
| 卷号 | 6页码:50-68 |
| ISSN号 | ISBN/1753-8947 |
| 英文摘要 | Global Land Surface Satellite-downward surface shortwave radiation (GLASS-DSSR) products have been routinely produced from 2008-2010 based on an improved look-up table algorithm, which explicitly accounts for the variations of cloud optical depth, water vapor content, and elevation. In this study, we validated and assessed the accuracy of these products in arid and semiarid regions of China. Toward this goal, observation data-sets provided by the Arid and Semiarid Region Collaborative Observation Project as well as four other metrological sites were collected, chosen, and preprocessed for the final validation. Due to the possible effect of spatial collocation and the strong adjacency pixel effect in instantaneous products, we used a more sophisticated validating scheme in order to reduce the impacts from these effects as much as possible. Evidences indicate that the GLASS-DSSR products are considerably accurate over most parts of arid and semiarid regions in China, but in complex terrain areas the products might need further refinements. The R-2 at all sites (except Naqu) was larger than 0.8 with a root mean square error (RMSE) range of about in 90-130 W/m(2). Linear regression analyses suggest that GLASS-DSSR products tend to overestimate DSSR in the interval of low surface-measured values and symmetrically underestimate DSSR in the interval of high values. This systematic error may result from inappropriate assumptions about clouds and aerosol loadings over the regions in the operational algorithm. |
| 收录类别 | (SCI) |
| 公开日期 | 2014-12-19 |
| 源URL | [http://ir.casnw.net/handle/362004/23228]  |
| 专题 | 寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文 |
| 推荐引用方式 GB/T 7714 | Huang G. H.,Wang W. Z.,Zhang X. T.,et al. Preliminary validation of GLASS-DSSR products using surface measurements collected in arid and semi-arid regions of China (SCI)[J]. International Journal of Digital Earth,2013,6:50-68. |
| APA | Huang G. H..,Wang W. Z..,Zhang X. T..,Liang S. L..,Liu S. M..,...&Ma Z. G..(2013).Preliminary validation of GLASS-DSSR products using surface measurements collected in arid and semi-arid regions of China (SCI).International Journal of Digital Earth,6,50-68. |
| MLA | Huang G. H.,et al."Preliminary validation of GLASS-DSSR products using surface measurements collected in arid and semi-arid regions of China (SCI)".International Journal of Digital Earth 6(2013):50-68. |
入库方式： OAI收割
来源：寒区旱区环境与工程研究所
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