Precipitation‐driven glacier changes in the Pamir and Hindu Kush mountains
Precipitation‐driven glacier changes in the Pamir and Hindu Kush mountains
复制标题
DOI：
10.1002/2017gl072646
复制
发表时间：
2017-03
影响因子：
5.2
通讯作者：
Qiuyu Wang;S. Yi;Wenke Sun
中科院分区：
文献类型：
--
作者：
Qiuyu Wang;S. Yi;Wenke Sun
帕米尔-兴都库什-喀喇昆仑山脉的冰川似乎受全球变暖的影响较小，相反，与世界上大多数其他冰川不同，冰川的质量略有增加。在这里，我们应用激光测高和卫星降水产品来描述冰川和降水之间的关系。我们发现，2003 - 2008年帕米尔和兴都库什冰川厚度的逐年变化与降水量之间存在很强的相关性（r ≥ 0.92，p < 0.005），表明降水在冰川变化中起主要作用。在格网降水产品中，冰川地区的降水量被低估了约7 ± 2倍。这种低估是由于低分辨率和缺乏地形降水的网格产品。长期降水数据显示出强烈的年际变化，这可能导致冰川的类似变化和以前冰川质量变化估计的偏差。
Glaciers in the Pamir‐Hindu Kush‐Karakoram appear to be less influenced by global warming and have instead experienced slight gains in mass, unlike most other glaciers around the world. Here we apply laser altimetry and satellite‐derived precipitation products to characterize the relationship between the glaciers and precipitation. We found a strong correlation (r ≥ 0.92, p < 0.005) between the year‐to‐year changes in glacier thickness and precipitation in the Pamir and Hindu Kush from 2003 to 2008, indicating the primary role of precipitation in the glacier changes. The amount of precipitation in the glacial region is underestimated by approximately 7 ± 2 times in the gridded precipitation product. This underestimation is attributed to the low resolution and lack of orographic precipitation in the gridded products. The long‐term precipitation data show strong interannual variations, which probably cause similar variations in glaciers and biases in previous glacier mass change estimates.