Spatio-Temporal Change of Snow Cover and Its Response to Climate over the Tibetan Plateau Based on an Improved Daily Cloud-Free Snow Cover Product
Spatio-Temporal Change of Snow Cover and Its Response to Climate over the Tibetan Plateau Based on an Improved Daily Cloud-Free Snow Cover Product
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基于改进的日无云积雪产品的青藏高原积雪时空变化及其对气候的响应
DOI：
10.3390/rs70100169
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发表时间：
2014-12
期刊：
影响因子：
5
通讯作者：
Tianggang Liang
中科院分区：
文献类型：
--
作者：
Wei Wang;Xiaodong Huang;Jie Deng;Hongjie Xie;Tianggang Liang
使用新的，每日无云的积雪产品，这项研究探讨积雪动态及其对气候变化的反应。结果表明，逐日无云雪盖产品不仅体现了AMSR-E的优点，（不受天气条件影响）和中分辨率成像分光仪（相对较高的分辨率）产品，但也具有高雪和整体分类精度的特点（分别为~85%和~ 98%），远大于现有的所有天空条件下的每日积雪产品，与或甚至稍大于晴朗天空条件下的每日MODIS产品。利用积雪产品对青藏高原积雪动态进行分析，结果表明，2003 - 2010年青藏高原年最大积雪日数（SCD）呈减少趋势，积雪面积（SCA）减少约占青藏高原总面积的55.3%。最大积雪面积（SCA）也有略微增加的趋势，持续积雪面积（即，SCD > 350天的像素），其特点是温度（0.09 °C/年）和降水量（0.26毫米/年）的增加。这表明，在青藏高原，温度和降水的变化对区域SCD和SCA以及持续积雪的分布有很大的影响。
Using new, daily cloud-free snow-cover products, this study examines snow cover dynamics and their response to climate change. The results demonstrate that the daily cloud-free snow-cover products not only posses the advantages of the AMSR-E (unaffected by weather conditions) and MODIS (relatively higher resolution) products, but are also characterized by high snow and overall classification accuracies (~85% and ~98%, respectively), substantially greater than those of the existing daily snow-cover products for all sky conditions and very similar to, or even slightly greater than, those of the daily MODIS products for clear-sky conditions. Using the snow-cover products, we analyzed the snow cover dynamics over the Tibetan Plateau and determined that the maximum number of snow-covered days (SCD) in a year followed a decreasing tendency from 2003 to 2010, with a decrease in snow-covered area (SCA) equivalent to 55.3% of the total Tibetan Plateau area. There is also a slightly increasing tendency in the maximum snow cover area (SCA), and a slightly decreasing tendency in the persistent snow cover area (i.e., pixels of SCD > 350 days) was observed for the 8-year period, which was characterized by increases in temperature (0.09 °C/year) and in precipitation (0.26 mm/year). This suggests that, on the Tibetan Plateau, changes in temperature and precipitation exert a considerable influence on the regional SCD and SCA, as well as the distribution of persistent snow cover.
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影响因子：
3.9
作者：
D. Hall;J. Foster;N. DiGirolamo;G. Riggs
通讯作者：
D. Hall;J. Foster;N. DiGirolamo;G. Riggs
影响因子：
4.9
作者：
Qin Dahe;Liu Shiyin;Li Peiji
通讯作者：
Li Peiji
影响因子：
1.7
作者：
Zhiguang Tang;Jian Wang;Hongyi Li;Lili Yan
通讯作者：
Zhiguang Tang;Jian Wang;Hongyi Li;Lili Yan
影响因子：
3.4
作者：
J. Foster;D. Hall;J. Eylander;G. Riggs;S. Nghiem;M. Tedesco;Edward J. Kim;P. Montesano;R. Kelly-R.-Kel
通讯作者：
J. Foster;D. Hall;J. Eylander;G. Riggs;S. Nghiem;M. Tedesco;Edward J. Kim;P. Montesano;R. Kelly-R.-Kel
影响因子：
3.3
作者：
Z. Du
通讯作者：
Z. Du