Interannual Glacial Mass Changes in High Mountain Asia and Connections to Climate Variability

IF 4.2 2区地球科学 Q2 ENVIRONMENTAL SCIENCES Remote Sensing Pub Date : 2024-09-15 DOI:10.3390/rs16183426

Yifan Wang, Jingang Zhan, Hongling Shi, Jianli Chen

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Abstract

We use data from the Gravity Recovery and Climate Experiment and its Follow-On mission (GRACE/GRACE-FO) from April 2002 to December 2022 to analyze interannual glacial mass changes in High Mountain Asia (HMA) and its subregions and their driving factors. Glacial mass changes in the HMA subregions show clear regional characteristics. Interannual glacial mass changes in the HMA region are closely related to interannual oscillations of precipitation and temperature, and are also correlated with El Niño–Southern Oscillation (ENSO). Glacial mass changes in the regions (R1–R6) are dominated by precipitation, and ENSO affects interannual glacial mass changes mainly by affecting precipitation. In region (R7) and region (R8), the glacial mass changes are mainly controlled by temperature. ENSO also affects the interannual glacial mass changes by affecting interannual changes in temperature. The interannual glacial mass changes in regions (R9–R11) are jointly dominated by temperature and precipitation, and also related to ENSO. Another interesting finding of this study is that glacial mass changes in the western part of HMA (R1–R6) show a clear 6–7-year oscillation, strongly correlated with a similar oscillation in precipitation, while in the eastern part (R9–R11), a 2–3-year oscillation was found in both glacial mass change and precipitation, as well as temperature. These results verify the response of interannual HMA glacial mass changes to climate processes, crucial for understanding regional climate dynamics and sustainable water resource management.

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亚洲高山地区年际冰川质量变化及其与气候多变性的联系

我们利用重力恢复与气候实验及其后续任务（GRACE/GRACE-FO）2002 年 4 月至 2022 年 12 月的数据，分析了亚洲高山及其亚区的年际冰川质量变化及其驱动因素。高山亚洲次区域的冰川质量变化显示出明显的区域特征。高山亚洲地区的年际冰川质量变化与降水和温度的年际振荡密切相关，也与厄尔尼诺-南方涛动（ENSO）相关。R1-R6 区域的冰川质量变化以降水为主，厄尔尼诺/南方涛动主要通过影响降水来影响年际冰川质量变化。在区域（R7）和区域（R8），冰川质量变化主要受温度控制。厄尔尼诺/南方涛动也通过影响年际温度变化来影响年际冰川质量变化。区域（R9-R11）的年际冰川质量变化由温度和降水共同主导，也与厄尔尼诺/南方涛动有关。本研究的另一个有趣发现是，高纬度地区西部（R1-R6）的冰川质量变化呈现出明显的 6-7 年振荡，与降水的类似振荡密切相关；而在东部地区（R9-R11），冰川质量变化和降水以及温度都呈现出 2-3 年的振荡。这些结果验证了高纬度地区年际冰川质量变化对气候过程的响应，这对了解区域气候动态和可持续水资源管理至关重要。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Remote Sensing REMOTE SENSING-

CiteScore

8.30

自引率

24.00%

发文量

5435

审稿时长

20.66 days

期刊介绍： Remote Sensing (ISSN 2072-4292) publishes regular research papers, reviews, letters and communications covering all aspects of the remote sensing process, from instrument design and signal processing to the retrieval of geophysical parameters and their application in geosciences. Our aim is to encourage scientists to publish experimental, theoretical and computational results in as much detail as possible so that results can be easily reproduced. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.