Using a geographic information system to improve Special Sensor Microwave Imager precipitation estimates over the Tibetan Plateau
文献类型：SCI/SSCI论文
| 作者 | Yin Z. Y. ; Liu X. D. ; Zhang X. Q. ; Chung C. F. |
| 发表日期 | 2004 |
| 关键词 | Tibetan Plateau SSM/I precipitation geographic information system (GIS) digital elevation model (DEM) rainfall estimation algorithms global precipitation mountainous terrain snow cover multivariate geostatistics gauge observations diurnal-variation water-vapor ssm/i model |
| 英文摘要 | [1] This study examines the potential of spatial modeling using geographic information systems (GIS) to improve the precipitation estimates based on Special Sensor Microwave/ Imager (SSM/I) over the Tibetan Plateau. The monthly SSM/I precipitation estimates are based on the algorithm developed at the National Environmental Satellite, Data and Information Service (NESDIS) of the National Oceanic and Atmospheric Administration (NOAA). When using SSM/I estimates to predict station precipitation directly, the R-2 values ranged from 0.005 to 0.624, with a mean of 0.334 for all months. When terrain and location variables obtained from the GIS were added to the models, the R-2 values improved to range from 0.217 to 0.739 with a mean of 0.590 for all months. These variables represent effects of orographic forcing of topography, rain barrier/rain shadow, direction of moisture-bearing winds, and distance to the sources of moisture over the Tibetan Plateau. Results from this study suggest that region-specific algorithms are necessary for the SSM/I precipitation estimates over the Tibetan Plateau and that topographic analysis based on GIS can contribute significantly in improving the performance of SSM/I estimates. |
| 出处 | Journal of Geophysical Research-Atmospheres |
| 卷 | 109 |
| 期 | D3 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0148-0227 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/22531]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Yin Z. Y.,Liu X. D.,Zhang X. Q.,et al. Using a geographic information system to improve Special Sensor Microwave Imager precipitation estimates over the Tibetan Plateau. 2004. |
入库方式： OAI收割
来源：地理科学与资源研究所
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