Increased mass over the Tibetan Plateau: From lakes or glaciers?

被引：268

作者：

Zhang, Guoqing ^{[1
,2
]}

Yao, Tandong ^{[1
]}

Xie, Hongjie ^{[3
]}

Kang, Shichang ^{[1
]}

Lei, Yanbin ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China

[2] E China Inst Technol, Jiangxi Prov Key Lab Digital Land, Nanchang, Jiangxi, Peoples R China

[3] Univ Texas San Antonio, Lab Remote Sensing & Geoinformat, San Antonio, TX USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2013年 / 40卷 / 10期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Tibetan Plateau; mass balance; glacier; lake level; ICESat; ICE; CLIMATE; OCEAN;

D O I：

10.1002/grl.50462

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The mass balance in the Inner Tibet Plateau (ITP) derived from the Gravity Recovery and Climate Experiment (GRACE) showed a positive rate that was attributed to the glacier mass gain, whereas glaciers in the region, from other field-based studies, showed an overall mass loss. In this study, we examine lake's water level and mass changes in the Tibetan Plateau (TP) and suggest that the increased mass measured by GRACE was predominately due to the increased water mass in lakes. For the 200 lakes in the TP with 4 to 7 years of ICESat data available, the mean lake level and total mass change rates were +0.14 m/yr and +4.95 Gt/yr, respectively. Compared those in the TP, 118 lakes in the ITP showed higher change rates (+0.20 m/yr and +4.28 Gt/yr), accounting for 59% area and 86% mass increase of the 200 lakes. The lake's mass increase rate in the ITP explains the 61% increased mass (similar to 7 Gt/yr) derived from GRACE [Jacob et al., 2012], while it only accounts for 53% of the total lake area in the ITP.

引用

页码：2125 / 2130

页数：6

共 34 条

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