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Article

Characteristics of the Water Vapor Transport in the Canyon Area of the Southeastern Tibetan Plateau

1
Plateau Atmosphere and Environment Key Laboratory, School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu 610225, China
2
Land-Atmosphere Interaction and Its Climatic Effects Group, State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment (TPESRE), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
3
College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
4
College of Atmospheric Science, Lanzhou University, Lanzhou 730000, China
5
Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Chinese Academy of Sciences, Lanzhou 730000, China
*
Author to whom correspondence should be addressed.
Academic Editor: Maria Mimikou
Water 2021, 13(24), 3620; https://doi.org/10.3390/w13243620
Received: 9 November 2021 / Revised: 10 December 2021 / Accepted: 12 December 2021 / Published: 16 December 2021
(This article belongs to the Special Issue Energy and Water Cycles in the Third Pole)
Changes in the surface fluxes cause changes in the annular flow field over a region, and they affect the transport of water vapor. To study the influence of the changes in the surface flux on the water vapor transport in the upper layer in the canyon area of southeastern Tibet, in this study, the water vapor transport characteristics were analyzed using the HYSPLIT_v4 backward trajectory model at Danka and Motuo stations in the canyons in the southeastern Tibetan Plateau from November 2018 to October 2019. Then, using ERA-5 reanalysis data from 1989 to 2019 and the characteristics of the high-altitude water vapor transportation, the impact of the surface flux changes on the water vapor transportation was analyzed using singular value decomposition (SVD). The results show that the main sources of the water vapor in the study area were from the west and southwest during the non-Asian monsoon (non-AMS), while there was mainly southwest air flow and a small amount of southeast air flow in the lower layer during the Asian monsoon (AMS) at the stations in southeastern Tibet. The water vapor transmission channel of the westward airflow is higher than 3000 m, and the water vapor transmission channel of the southwestward and southeastward airflow is about 2000 m. The sensible heat and latent heat are negatively correlated with water vapor flux divergence. The southwest boundary of southeastern Tibet is a key area affecting water vapor flux divergence. When the sensible heat and latent heat exhibit downward trends during the non-Asian monsoon season, the eastward water vapor flux exhibits an upward trend. During the Asian monsoon season, when the sensible heat and latent heat in southeastern Tibet increase as a whole, the eastward water vapor flux in the total-column of southeastern Tibet increases. View Full-Text
Keywords: surface fluxes; HYSPLIT_v4 model; water vapor transport; singular value decomposition surface fluxes; HYSPLIT_v4 model; water vapor transport; singular value decomposition
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MDPI and ACS Style

Li, M.; Wang, L.; Chang, N.; Gong, M.; Ma, Y.; Yang, Y.; Chen, X.; Han, C.; Sun, F. Characteristics of the Water Vapor Transport in the Canyon Area of the Southeastern Tibetan Plateau. Water 2021, 13, 3620. https://doi.org/10.3390/w13243620

AMA Style

Li M, Wang L, Chang N, Gong M, Ma Y, Yang Y, Chen X, Han C, Sun F. Characteristics of the Water Vapor Transport in the Canyon Area of the Southeastern Tibetan Plateau. Water. 2021; 13(24):3620. https://doi.org/10.3390/w13243620

Chicago/Turabian Style

Li, Maoshan, Lingzhi Wang, Na Chang, Ming Gong, Yaoming Ma, Yaoxian Yang, Xuelong Chen, Cunbo Han, and Fanglin Sun. 2021. "Characteristics of the Water Vapor Transport in the Canyon Area of the Southeastern Tibetan Plateau" Water 13, no. 24: 3620. https://doi.org/10.3390/w13243620

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