[快闪报告]A tree-ring perspective on the past and future mass balance of a glacier in Tien Shan (Central Asia): an example from the accumulation area of Tuyuksu Glacier, Kyrgyzstan

A tree-ring perspective on the past and future mass balance of a glacier in Tien Shan (Central Asia): an example from the accumulation area of Tuyuksu Glacier, Kyrgyzstan
编号:1370 稿件编号:2872 访问权限:私有 更新:2023-04-10 09:29:13 浏览:198次 快闪报告

报告开始:2023年05月07日 16:56 (Asia/Shanghai)

报告时间:3min

所在会议:[1A] 1A、第四纪地质与全球变化 » [1A-3] 1A-3 第四纪地质与全球变化

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摘要
The Tien Shan glaciers, known as "Central Asia's Water Tower," have a direct influence on water resource management in downstream parched areas. The limited time periods of currently available observational climate datasets hamper an accurate examination of glacial changes in Central Asia in terms of long-term climate change implications. In this work, we analysed this change by combining tree-ring-based reconstructions of the accumulation area of the Tuyuksu Glacier during the last 382 years with models of the future mass balance of this glacier until the year 2100 CE. The results show that mountain precipitation is an important force driving the cycles of the cryosphere, biosphere and hydrosphere in arid Central Asia. This driving force has broad coherence in spatiotemporal variation, with periodic cycles and decadal shifts caused by the North Atlantic Oscillation and the El Niño-Southern Oscillation. The multi-model mean in CMIP6 suggests a downward trend in glacier mass balance until 2100, but this trend will be moderated by increased precipitation. The findings of the study could help to explain how the glacial mass balance has evolved in the Tien Shan Mountains of Central Asia throughout time and its relationship to biosphere and hydrosphere.
关键字
Central Asia,Tuyuksu Glacier,mass balance reconstruction,Tree-ring,CMIP 6
报告人
陈友平
云南大学

稿件作者
陈友平 云南大学
陈峰 云南大学
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