Extensive and drastically different alpine lake changes on Asia's high plateaus during the past four decades

Guoqing Zhang*, Tandong Yao, Shilong Piao, Tobias Bolch, Hongjie Xie, Deliang Chen, Yanhong Gao, Catherine M. O'Reilly, C. K. Shum, Kun Yang, Shuang Yi, Yanbin Lei, Weicai Wang, You He, Kun Shang, Xiankun Yang, Hongbo Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

124 Citations (Scopus)

Abstract

Asia's high plateaus are sensitive to climate change and have been experiencing rapid warming over the past few decades. We found 99 new lakes and extensive lake expansion on the Tibetan Plateau during the last four decades, 1970–2013, due to increased precipitation and cryospheric contributions to its water balance. This contrasts with disappearing lakes and drastic shrinkage of lake areas on the adjacent Mongolian Plateau: 208 lakes disappeared, and 75% of the remaining lakes have shrunk. We detected a statistically significant coincidental timing of lake area changes in both plateaus, associated with the climate regime shift that occurred during 1997/1998. This distinct change in 1997/1998 is thought to be driven by large-scale atmospheric circulation changes in response to climate warming. Our findings reveal that these two adjacent plateaus have been changing in opposite directions in response to climate change. These findings shed light on the complex role of the regional climate and water cycles and provide useful information for ecological and water resource planning in these fragile landscapes.

Original languageEnglish
Pages (from-to)252-260
Number of pages9
JournalGeophysical Research Letters
Volume44
Issue number1
Early online date8 Jan 2017
DOIs
Publication statusPublished - 28 Jan 2017

Keywords

  • Cryosphere
  • Inflection point
  • Lake change
  • Mongolian Plateau
  • Tibetan Plateau

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