东昆仑木孜塔格峰地区水汽来源分析

doi:10.13866/j.azr.2024.02.04

干旱区研究 ›› 2024, Vol. 41 ›› Issue (2): 211-219.doi: 10.13866/j.azr.2024.02.04 cstr: 32277.14.j.azr.2024.02.04

东昆仑木孜塔格峰地区水汽来源分析

吴佳康¹^,²(), 陈丽花¹^,², 车彦军¹^,²^,³^,⁴(), 张明军³^,⁴, 曹昀¹, 谷来磊³^,⁴

1.江西师范大学地理与环境学院，江西南昌 330022
2.宜春学院地理科学系，江西宜春 336000
3.西北师范大学地理与环境科学学院，甘肃兰州 730070
4.甘肃省绿洲资源环境与可持续发展重点实验室，甘肃兰州 730070

收稿日期:2023-07-31 修回日期:2023-10-18 出版日期:2024-02-15 发布日期:2024-03-11
作者简介:吴佳康（1999-），硕士研究生，主要从事冰川区水文过程研究. E-mail: wjiakang@126.com
基金资助:
第三次新疆综合科学考察项目(2021xjkk0101);国家自然科学基金项目(42101135);江西省自然科学基金项目(20232BAB203060);甘肃省绿洲资源环境与可持续发展重点实验室基金项目(GORS202103);江西师范大学研究生国内外访学研究项目

Analysis of moisture feeding in the Ulugh Muztagh area of the East Kunlun Mountains

WU Jiakang¹^,²(), CHEN Lihua¹^,², CHE Yanjun¹^,²^,³^,⁴(), ZHANG Mingjun³^,⁴, CAO Yun¹, GU Lailei³^,⁴

1. School of Geography and Environment, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
2. Department of Geographical Science, Yichun University, Yichun 336000, Jiangxi, China
3. College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, Gansu, China
4. Key Laboratory of Resource Environment and Sustainable Development of Oasis, Gansu Province, Lanzhou 730070, Gansu, China

Received:2023-07-31 Revised:2023-10-18 Published:2024-02-15 Online:2024-03-11

摘要/Abstract

摘要：

降水是山地冰川重要的补给，水汽来源与降水的多少密切相关。本文选取昆仑山东部木孜塔格峰现代冰川分布区，基于混合单粒子拉格朗日综合轨迹（HYSPLIT）模型和全球数据同化系统（GDAS）对木孜塔格峰地区2005—2022年水汽来源进行后向轨迹分析，并探讨其季节变化，揭示木孜塔格峰地区水汽来源及其规律。结果表明：木孜塔格峰地区的水汽源主要随着中纬度西风带向欧亚内陆延伸，在青藏高原西部分为三路，分别从天山山脉、帕米尔高原以及从高空平流层进入我国青藏高原，印度洋水汽向北翻越喜马拉雅山或者西北转向东与西风环流混合进入高原腹地。木孜塔格峰地区主要由陆源水汽控制，分别是从帕米尔高原和天山山脉进入，其水汽占总量的62.52%；海源水汽则为西风带的高空水汽（大西洋水汽）以及印度洋水汽，占总量的37.48%；且海源水汽的占比逐年上升。从多年季节平均角度分析，除了以上的水汽源以外，夏季的局地再循环水汽比重较高，占总量的22.64%。本文研究结果将为理解东昆仑木孜塔格峰地区水循环提供重要参考。

关键词: 木孜塔格峰, HYSPLIT模型, 水汽来源, 东昆仑

Abstract:

Precipitation acts as a crucial supply for mountain glaciers, and its water vapor source closely correlates to the amount of precipitation. This study focuses on the modern glacier distribution area of Ulugh Muztagh in the eastern Kunlun Mountains, analyzing water vapor sources in the region from 2005 to 2022 using the Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) model and the Global Data Assimilation System (GDAS). Employing backward trajectory analysis, we reveal the source and regularity of water vapor in the Ulugh Muztagh region and discuss its seasonal changes. The results show that the water vapor source in the Ulugh Muztagh area mainly extends to the Eurasian interior along the midlatitude westerly belt and is divided into three routes entering the Qinghai-Tibet Plateau from the Tianshan Mountains, the Pamir Plateau, and over the high-altitude stratosphere. On the Qinghai-Tibet Plateau, water vapor from the Indian Ocean either moves northward over the Himalayas or turns northwestward to merge with the westerly circulation into the plateau’s hinterland. Land-source water vapor, entering from the Pamir Plateau and Tianshan Mountains, accounts for 62.52% of the total water vapor in the Ulugh Muztagh area. Meanwhile, sea source water vapor, comprising high-altitude water vapor from the westerly belt (Atlantic water vapor) and the Indian Ocean, accounts for 37.48% of the total water vapor. Notably, we find that the proportion of water vapor from the sea source has increased steadily over recent decades. Analyzing multiyear seasonal averages for water vapor, we find a notably high proportion of locally recycled water vapor in the summer, comprising 22.64% of the total. This study’s outcomes offer valuable insights into the water cycle dynamics of the Ulugh Muztagh area in the East Kunlun Mountains.

Key words: Ulugh Muztagh Mountains, HYSPLIT model, sources of moisture, East Kunlun Mountains

吴佳康, 陈丽花, 车彦军, 张明军, 曹昀, 谷来磊. 东昆仑木孜塔格峰地区水汽来源分析[J]. 干旱区研究, 2024, 41(2): 211-219.

WU Jiakang, CHEN Lihua, CHE Yanjun, ZHANG Mingjun, CAO Yun, GU Lailei. Analysis of moisture feeding in the Ulugh Muztagh area of the East Kunlun Mountains[J]. Arid Zone Research, 2024, 41(2): 211-219.

图/表 5

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东昆仑木孜塔格峰地区水汽来源分析

Analysis of moisture feeding in the Ulugh Muztagh area of the East Kunlun Mountains

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