Lake water and glacier mass gains in the northwestern Tibetan Plateau observed from multi-sensor remote sensing data: Implication of an enhanced hydrological cycle
Lake water and glacier mass gains in the northwestern Tibetan Plateau observed from multi-sensor remote sensing data: Implication of an enhanced hydrological cycle
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多传感器遥感数据观测到的青藏高原西北部湖水和冰川质量增加：水文循环增强的意义
DOI：
10.1016/j.rse.2019.111554
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发表时间：
2020-02
影响因子：
13.5
通讯作者：
Wei Luo
中科院分区：
文献类型：
--
作者：
Guoqing Zhang;Wenfeng Chen;Gang Li;Wei Yang;Shuang Yi;Wei Luo
青藏高原西北部广泛分布着湖泊和冰川。以前没有对那里的湖泊和冰川质量变化进行同步检查，这限制了对该区域湖泊水平衡和水文循环的了解。在这项研究中，我们利用多传感器卫星数据综合研究了湖泊面积和体积，以及冰川质量的变化。我们发现，从1976年到2018年，青藏高原西北部的湖泊扩张与高原其他地区相比更为强劲，尤其是冰川补给型和内陆型湖泊。湖量变化表明，大多数湖泊的水量都有所增加，特别是在2000-2018年，总蓄水量增加了28.6亿吨。利用高分辨率KH-9和TANDEM-X数据，我们观测到西昆仑山冰川表面高程在1973年-2000年期间的轻微减薄速率为−0.07百万米/年±0.16亿米/年，而在2000年-2018年期间的正速率为0.002±0.003米/年。揭示了北(北)坡和南(S)坡冰川高程变化的不均匀格局，即1973年-2000年，S(−)的冰川高程变化为-0.02m/yr±0.01m/yr(N)，S(1973年-2018年)的冰川高程变化为-0.02m/yr(N)，−为0.02m/yr(N)；总体而言，2000年至2018年期间，西昆仑山南坡和阿如错地区的冰川都趋于稳定状态(~0.05百万米/年)。对湖泊储存变化(质量增加)和冰川质量收支(正的或接近稳定的)的全流域检查也发现了类似的模式。由无云MODIS积雪产品得到的季节积雪面积变化在2003-2017年间呈现出一种可变且不显著的趋势。从被动微波遥感数据得到的积雪深度在1979-2015年间呈下降趋势，但水当量对观测到的湖泊变化的贡献很小。湖水增加，冰川物质平衡接近正值，表明青藏高原西北部的水文循环得到了增强。
Lakes and glaciers are widely distributed in the northwestern Tibetan Plateau. A synchronized examination of lake and glacier mass variations there has not previously been conducted, which has limited the understanding of the lake water balance and the hydrologic cycle in the region. In this study, we comprehensively examine lake area and volume, and glacier mass changes using multi-sensor satellite data. We find that lake expansion in the northwestern Tibetan Plateau was more robust from 1976 to 2018 when compared to other regions of the plateau, especially for the glacier-fed and endorheic lakes. Lake volume changes show that most of the lakes had an increase in water volume, particularly in 2000–2018 with a total water storage gain of ~28.6 Gt. By using high-resolution KH-9 and TanDEM-X data, we observe that the glacier surface elevation of the western Kunlun Mountains had a slight thinning rate of −0.07 ± 0.16 m/yr in 1973–2000, but a positive rate of 0.002 ± 0.003 m/yr in 2000–2018. The heterogeneous pattern of glacier elevation changes between the north (N) and south (S) slopes are revealed, i.e. -0.02 ± 0.01 m/yr (N) against −0.12 ± 0.03 m/yr (S) in 1973–2000 and − 0.05 ± 0.02 m/yr (N) against 0.06 ± 0.02 m/yr (S) in 2000–2018. Overall, the glaciers trend to a stable state (~0.05 m/yr) in both the south slope of the western Kunlun Mountains and Aru Co regions between 2000 and 2018. Similar patterns are also found for basin-wide examinations of lake storage changes (mass gains) and glacier mass budgets (positive or close to stable). The seasonal snow cover area changes, derived from cloud-free MODIS snow cover products, present a variable and insignificant trend between 2003 and 2017. Snow depth derived from passive microwave remote-sensing data, exhibits a decreasing trend between 1979 and 2015, but the water equivalent could contribute only an insignificant amount to the observed lake changes. The lake water gains, and almost positive glacier mass balance imply that the hydrological cycle in the northwestern Tibetan Plateau has become enhanced.
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1960-2015年中国湖泊演化的区域差异及其自然和人为原因
影响因子：
13.5
作者：
Zhang Guoqing;Yao T;ong;Chen Wenfeng;Zheng Guoxiong;Shum C K;Yang Kun;Piao Shilong;Sheng Yongwei;Yi Shuang;Li Junli;O'Reilly Catherine M;Qi Shuhua;Shen Samuel S P;Zhang Hongbo;Jia Yuanyuan
通讯作者：
Jia Yuanyuan
影响因子：
18.3
作者：
Brun F;Berthier E;Wagnon P;Kääb A;Treichler D
通讯作者：
Treichler D
西藏西部两座冰川崩塌
影响因子：
3.4
作者：
Tian Lide;Yao T;ong;Gao Yang;Thompson Lonnie;Mosley-Thompson Ellen;Muhammad Sher;Zong Jibiao;Wang Cheng;Jin Shengqiang;Li Zhiguo
通讯作者：
Li Zhiguo
DOI：
10.3390/rs5073544
发表时间：
2013-07
期刊：
Remote. Sens.
影响因子：
--
作者：
S. K. McFeeters
通讯作者：
S. K. McFeeters
影响因子：
13.5
作者：
K. Paudel;Peter Andersen
通讯作者：
K. Paudel;Peter Andersen