Vanishing Glaciers at Southeast Tibetan Plateau Have Not Offset the Declining Runoff at Yarlung Zangbo,Geophysical Research Letters

当前位置： X-MOL 学术 › Geophys. Res. Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Vanishing Glaciers at Southeast Tibetan Plateau Have Not Offset the Declining Runoff at Yarlung Zangbo
Geophysical Research Letters ( IF 4.6 ) Pub Date : 2021-10-16 , DOI: 10.1029/2021gl094651
Yuanwei Wang _{1,

2,

3} , Lei Wang _{1,

3} , Jing Zhou ₁ , Tandong Yao _{1,

3} , Wei Yang ₁ , Xiaoyang Zhong _{1,

3} , Ruishun Liu _{1,

3} , Zhidan Hu ₄ , Lun Luo ₁ , Qinghua Ye ₁ , Ningsheng Chen ₅ , Haitao Ding ₅

Affiliation

The Third Pole experiences accelerated glacier retreating particularly in the eastern-Himalaya, coinciding with a decrease of monsoon-precipitation in the early 21st century. The extent to which the vanishing abundant maritime glaciers buffer the declining precipitation-runoff remains unclear. Here, with a state-of-the-art enthalpy-based distributed cryosphere-hydrology model and first-hand hydrometeorology observations at Motuo (latest accessible Chinese county), we carefully examine the Yarlung Zangbo basin along Himalayas. We find that during 1998–2019, the rising downstream runoff (lower Nuxia; +6.40 × 10⁸ m³/yr) offsets the dropping upstream runoff (upper Nuxia; −6.89 × 10⁸ m³/yr); however, only the marginal contribution from the vanishing eastern-Himalaya and Nyainqêntanglha glaciers. During 1998–2019, dry upstream illustrates limited glacier melt (15.7 mm/yr) with dominated snow melt (78.8 mm/yr); while much larger at humid downstream (144.8 mm/yr for glacier melt and 219.1 mm/yr for snow melt). From 1981 to 2019, we observe glacier-to-snow melt transition in both upstream and downstream due to glacier degradation and growing nonmonsoon-season precipitation.

更新日期：2021-10-27

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11