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Zheng Duan

Biträdande universitetslektor

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Permafrost Hydrology of the Qinghai-Tibet Plateau : A Review of Processes and Modeling

Författare

  • Hongkai Gao
  • Jingjing Wang
  • Yuzhong Yang
  • Xicai Pan
  • Yongjian Ding
  • Zheng Duan

Summary, in English

Permafrost extends 40% of the Qinghai-Tibet Plateau (QTP), a region which contains the headwaters of numerous major rivers in Asia. As an aquiclude, permafrost substantially controls surface runoff and its hydraulic connection with groundwater. The freeze–thaw cycle in the active layer significantly impacts soil water movement direction, velocity, storage capacity, and hydraulic conductivity. Under the accelerating warming on the QTP, permafrost degradation is drastically altering regional and even continental hydrological regimes, attracting the attention of hydrologists, climatologists, ecologists, engineers, and decision-makers. A systematic review of permafrost hydrological processes and modeling on the QTP is still lacking, however, leaving a number of knowledge gaps. In this review, we summarize the current understanding of permafrost hydrological processes and applications of some permafrost hydrological models of varying complexity at different scales on the QTP. We then discuss the current challenges and future opportunities, including observations and data, the understanding of processes, and model realism. The goal of this review is to provide a clear picture of where we are now and to describe future challenges and opportunities. We concluded that more efforts are needed to conduct long-term field measurements, employ more advanced observation technologies, and develop flexible and modular models to deepen our understanding of permafrost hydrological processes and to improve our ability to predict the future responses of permafrost hydrology to climate changes.

Avdelning/ar

  • MERGE: ModElling the Regional and Global Earth system
  • Institutionen för naturgeografi och ekosystemvetenskap

Publiceringsår

2021

Språk

Engelska

Publikation/Tidskrift/Serie

Frontiers in Earth Science

Volym

8

Dokumenttyp

Artikel i tidskrift

Förlag

Frontiers Media S. A.

Ämne

  • Oceanography, Hydrology, Water Resources

Nyckelord

  • freeze–thaw process
  • frozen soil
  • permafrost
  • permafrost hydrological model
  • Qinghai-Tibet Plateau

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 2296-6463