Large-scale observations of alpine snow and ice cover in Asia: Using multi-temporal VEGETATION sensor data
文献类型：SCI/SSCI论文
| 作者 | Xiao X. ; Moore B. ; Qin X. ; Shen Z. ; Boles S. |
| 发表日期 | 2002 |
| 英文摘要 | In this study we used twenty-five 10-day synthetic products (composites) of the VEGETATION (VGT) sensor on SPOT 4 satellite from 11-20 March 1999 to 11-20 November 1999 to map snow and ice cover at 1-km spatial resolution in an alpine environment of Asia. The study area is within 73degrees-103degreesE and 25degrees-40degreesN (a total land area of 4.7 million km(2)), and includes the highest alpine region in the world (e.g. Himalaya Mountains, Qinghai-Tibet Plateau, Pamirs Plateau, Karakoram Range). In the VGT-based mapping approach, the Normalized Difference Snow/ Ice Index ( NDSII) is calculated as NDSII=(B2-MIR)/(B2+ MIR), where the ground reflectance values of the red band ( VGT band B2) and the mid-infrared band ( VGT band MIR) are used. When NDSII and the reflectance value of the near-infrared band ( VGT band B3) in a pixel (1 km x 1 km) meet the thresholds of NDSII greater than or equal to0.40 and band B3> 0.11, the pixel is assigned to be snow/ice cover. Total areas of snow/ice cover in the alpine region had large seasonal variations, ranging from 0.46 million km(2) in 11-20 March 1999 to 0.05 million km(2) in 1-10 August 1999 to 0.60 million km(2) in 11-20 November 1999. Spatial distributions of snow/ice cover also varied substantially across the alpine region. There were large areas of snow/ice cover in the north-western part of the alpine region in March and April, but large areas of snow/ice cover in the eastern part of the alpine region in October and November. Qualitatively, spatial patterns and temporal dynamics of snow/ice cover in the alpine region are closely correlated to the plateau monsoon climate and its precipitation patterns. |
| 出处 | International Journal of Remote Sensing |
| 卷 | 23 |
| 期 | 11 |
| 页 | 2213-2228 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0143-1161 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/22746]  |
| 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 | Xiao X.,Moore B.,Qin X.,et al. Large-scale observations of alpine snow and ice cover in Asia: Using multi-temporal VEGETATION sensor data. 2002. |
入库方式： OAI收割
来源：地理科学与资源研究所
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