Quantifying Climate‐Induced Changes in the Tibetan Plateau's Hydrologic Cycle Through Atmospheric Moisture Depletion and Restoration Times

Abstract This study examines the effects of atmospheric moisture dynamics on the Tibetan Plateau's hydrologic cycle, focusing on moisture depletion (, removal through precipitation) and restoration (, restoration through evaporation) times. We used a water budget approach within the Eulerian framework, utilizing ERA‐Interim data and 20 CMIP6 models, to analyze spatiotemporal variations, trends, and abrupt changes in and for the periods 2026–2050, 2051–2070, and 2071–2100, relative to 1979–2019, under the SSP245 and SSP585 scenarios. Sensitivities to local warming are expressed as relative changes per degree Kelvin (K). Results show that as temperatures rise, atmospheric moisture content increases more rapidly than precipitation and evaporation, intensifying the hydrological cycle. This is reflected in moisture sensitivity, with stronger responses to temperature changes (7.49%, 7.34%, 7.52%/K) compared to precipitation (2.62%, 3.46%, 3.99%/K) and evaporation (2.73, 3.24, 3.40%/K) across near‐, mid‐, and long‐term periods. Area‐averaged and are 9.5 and 17.1 days, respectively, with a projected 15.7% and 18.8% increase by 2100. Sensitivities of and to warming are 4.66%, 3.46%, 2.90%/K and 4.55%, 3.69%, 3.48%/K over the near‐, mid‐, and long‐term periods. Increased suggests slower moisture restoration due to reduced evaporation rates or limited surface moisture, while increased indicates slower moisture removal due to less frequent rainfall. These changes may lead to a drier atmosphere, reduced cloud formation, and increased vegetation water stress, potentially exacerbating drought conditions. This research enhances the understanding of moisture recycling in the Tibetan Plateau's hydrologic cycle and its climate‐induced changes.

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Publication Details

Journal
Water Resources Research
Published
2025-02-01
DOI
https://doi.org/10.1029/2024wr037644
Citations
6
Primary Topic
Climate variability and models
Type
article
Field-Weighted Citation Impact
6.63

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article

Quantifying Climate‐Induced Changes in the Tibetan Plateau's Hydrologic Cycle Through Atmospheric Moisture Depletion and Restoration Times

Jiahua Wei, Olusola O. Ayantobo
6 citations
Water Resources Research
Climate variability and models
6.63
article

Quantifying Climate‐Induced Changes in the Tibetan Plateau's Hydrologic Cycle Through Atmospheric Moisture Depletion and Restoration Times

Jiahua Wei, Olusola O. Ayantobo
article en
6 citations

Abstract

Abstract This study examines the effects of atmospheric moisture dynamics on the Tibetan Plateau's hydrologic cycle, focusing on moisture depletion (, removal through precipitation) and restoration (, restoration through evaporation) times. We used a water budget approach within the Eulerian framework, utilizing ERA‐Interim data and 20 CMIP6 models, to analyze spatiotemporal variations, trends, and abrupt changes in and for the periods 2026–2050, 2051–2070, and 2071–2100, relative to 1979–2019, under the SSP245 and SSP585 scenarios. Sensitivities to local warming are expressed as relative changes per degree Kelvin (K). Results show that as temperatures rise, atmospheric moisture content increases more rapidly than precipitation and evaporation, intensifying the hydrological cycle. This is reflected in moisture sensitivity, with stronger responses to temperature changes (7.49%, 7.34%, 7.52%/K) compared to precipitation (2.62%, 3.46%, 3.99%/K) and evaporation (2.73, 3.24, 3.40%/K) across near‐, mid‐, and long‐term periods. Area‐averaged and are 9.5 and 17.1 days, respectively, with a projected 15.7% and 18.8% increase by 2100. Sensitivities of and to warming are 4.66%, 3.46%, 2.90%/K and 4.55%, 3.69%, 3.48%/K over the near‐, mid‐, and long‐term periods. Increased suggests slower moisture restoration due to reduced evaporation rates or limited surface moisture, while increased indicates slower moisture removal due to less frequent rainfall. These changes may lead to a drier atmosphere, reduced cloud formation, and increased vegetation water stress, potentially exacerbating drought conditions. This research enhances the understanding of moisture recycling in the Tibetan Plateau's hydrologic cycle and its climate‐induced changes.

Water Resources ResearchVol. 61(2)
Qinghai University (CN), Guangxi University (CN), Tsinghua University (CN)
National Natural Science Foundation of China, National Key Research and Development Program of China
Openalex Percentile: Top 3%
Climate variability and models
6.63
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