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Article

Abundant Precipitation in Qilian Mountains Generated from the Recycled Moisture over the Adjacent Arid Hexi Corridor, Northwest China

by 1,2, 3,4 and 1,2,*
1
Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Northwest University, Xi’an 710127, China
2
College of Urban and Environmental Science, Northwest University, Xi’an 710127, China
3
State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy Sciences, Lanzhou 730000, China
4
Key Laboratory of Ecohydrology of Inland River Basin, Chinese Academy Sciences, Lanzhou 730000, China
*
Author to whom correspondence should be addressed.
Academic Editor: Momcilo Markus
Water 2021, 13(23), 3354; https://doi.org/10.3390/w13233354
Received: 31 October 2021 / Revised: 21 November 2021 / Accepted: 23 November 2021 / Published: 26 November 2021
(This article belongs to the Special Issue Vulnerability of Mountainous Water Resources and Hydrological Regimes)
The observed precipitation was suggestive of abundant precipitation in upstream Qilian mountains and low precipitation in the downstream oasis and desert in an endorheic basin. However, precipitation in mountains generated from the recycled moisture over oasis and desert areas has rarely been studied. The climatological patterns of water vapor from 1980 to 2017 in the Qilian Mountain Region (QMR) and Hexi Corridor Region (HCR) were investigated by the European Centre for Medium-Range Weather Forecasts Interim reanalysis dataset and the Modern-Era Retrospective Analysis for Research and Application, Version 2 reanalysis dataset. The results suggest that the precipitable water content decreases from the adjacent to the mountain areas. There are two channels that transport water vapor from the HCR to the QMR in the low troposphere (surface—600 hPa), suggesting that parts of recycled moisture generated from evapotranspiration over the oasis and desert of the HCR is transported to the QMR, contributing to the abundant precipitation in the QMR. This indicates that the transport mechanism is probably because of the “cold and wet island effect” of the cryosphere in QMR. This is likely one of the essential mechanisms of the water cycle in endorheic river basins, which has rarely been reported. View Full-Text
Keywords: precipitation generation; recycled moisture; water vapor; channel; Qilian Mountain Region; Hexi Corridor Region precipitation generation; recycled moisture; water vapor; channel; Qilian Mountain Region; Hexi Corridor Region
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MDPI and ACS Style

Zhang, Z.; Zhao, Q.; Zhang, S. Abundant Precipitation in Qilian Mountains Generated from the Recycled Moisture over the Adjacent Arid Hexi Corridor, Northwest China. Water 2021, 13, 3354. https://doi.org/10.3390/w13233354

AMA Style

Zhang Z, Zhao Q, Zhang S. Abundant Precipitation in Qilian Mountains Generated from the Recycled Moisture over the Adjacent Arid Hexi Corridor, Northwest China. Water. 2021; 13(23):3354. https://doi.org/10.3390/w13233354

Chicago/Turabian Style

Zhang, Zhihua, Qiudong Zhao, and Shiqiang Zhang. 2021. "Abundant Precipitation in Qilian Mountains Generated from the Recycled Moisture over the Adjacent Arid Hexi Corridor, Northwest China" Water 13, no. 23: 3354. https://doi.org/10.3390/w13233354

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