The Role of the Tibetan Plateau in the Climate System

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Climatology".

Deadline for manuscript submissions: closed (7 July 2023) | Viewed by 992

Special Issue Editor


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Guest Editor
Plateau Atmospheric and Environment Laboratory of Sichuan Province, School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu 610225, China
Interests: stratospheric–tropospheric interaction; climate variability; meteorological hazards

Special Issue Information

Dear Colleagues,

With an average altitude of over 4,000 meters, the Qinghai–Tibet Plateau is the highest physical geographical unit in the world and an important ecological security barrier for China and Asia. The Qinghai–Tibet Plateau is the fastest-warming region in East Asia, and it is also one of the regions with the most significant "wetness", which intensifies the occurrence of extreme weather and climate events. The frequency of extreme high-temperature events and extreme precipitation events has increased significantly in most areas of the Plateau; extreme weather and climate events such as heavy precipitation and heavy snowfall have increased, and derived disasters such as debris flow, landslide, collapse and glacial lake outburst have intensified. As a key region in the global energy and water cycle, climate change on the Qinghai–Tibet Plateau has a significant impact on climate and environment change on the plateau itself and its surrounding areas. Further understanding of the plateau climate change law, assessment and prediction of future trends, in order to serve the global ecological environment protection and the building of a community with a shared future for mankind, have become the main contents of climate change research on the Qinghai–Tibet Plateau. The Tibetan Plateau may be a new critical element of climate in an active state. The Qinghai–Tibet Plateau and other critical elements (e.g., climate-sensitive areas such as the Amazon rainforest) show significant tele-contribution characteristics. Studying possible chain reactions between tipping points is a key scientific issue.

This Special Issue focuses on the Tibetan teleconnections among tipping elements in the Earth system, the observed changes in climate and their effects over the Tibetan Plateau, and the variation characteristics, mechanism and projection of extreme precipitation over the Tibetan Plateau.

Dr. Quanliang Chen
Guest Editor

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Keywords

  • Tibetan Plateau
  • extreme precipitation
  • climate change
  • climate system
  • complex terrain

Published Papers (1 paper)

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Research

15 pages, 4967 KiB  
Article
Effects of Ground Subsidence on Permafrost Simulation Related to Climate Warming
by Zhe Sun, Lin Zhao, Guojie Hu, Huayun Zhou, Shibo Liu, Yongping Qiao, Erji Du, Defu Zou and Changwei Xie
Atmosphere 2024, 15(1), 12; https://doi.org/10.3390/atmos15010012 - 21 Dec 2023
Viewed by 735
Abstract
We develop a moving-mesh permafrost model that contains a ground subsidence computation module to estimate the effects of ground subsidence on permafrost simulation under different warming scenarios. Including the ground subsidence process in the permafrost simulation produces only a relatively small improvement in [...] Read more.
We develop a moving-mesh permafrost model that contains a ground subsidence computation module to estimate the effects of ground subsidence on permafrost simulation under different warming scenarios. Including the ground subsidence process in the permafrost simulation produces only a relatively small improvement in the simulation performance of the ground temperature field, as validated by observations from two sites on the Qinghai–Tibetan Plateau (QTP). It is shown that ignoring ground subsidence tends to achieve a larger active layer thickness (ALT) but a smaller original thickness of permafrost that has thawed when simulating permafrost changes in a warming climate. The heat consumed by permafrost changes will be underestimated in simulations that do not consider ground subsidence. The effects that ground subsidence exerts within the permafrost simulation are clearly demonstrated under a strong warming scenario, which will influence the global energy budget. Projections indicate that the permafrost in the continuous permafrost area of the QTP may be close to the phase transition temperature to become zero thermal gradients in 2030–2040 under the SSP5-8.5 scenario, and there will be a great risk of ground subsidence by that stage. For permafrost regions with rich ground ice, the downward propagating temperature signals caused by ground subsidence are more attenuated. However, the heat calculation error will be larger in a simulation that does not consider ground subsidence there. This study quantifies the effects of ground subsidence, which can provide a better understanding of the permafrost thaw and energy budget of the QTP. Full article
(This article belongs to the Special Issue The Role of the Tibetan Plateau in the Climate System)
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