长江科学院院报 ›› 2022, Vol. 39 ›› Issue (5): 36-44.DOI: 10.11988/ckyyb.20210098

• 水资源 • 上一篇    下一篇

滇中引水工程主要受水区水汽输送时空变化

何士华1, 赖毅舟1, 叶凤艳2, 沈春颖1, 潘锋1   

  1. 1.昆明理工大学 电力工程学院,昆明 650500;
    2.云南省设计院集团有限公司,昆明 650118
  • 收稿日期:2021-02-01 修回日期:2021-04-21 出版日期:2022-05-01 发布日期:2022-05-17
  • 通讯作者: 赖毅舟(1997-),男,福建清流人,硕士研究生,主要从事现代水文学研究。E-mail:1104204727@qq.com
  • 作者简介:何士华(1963-),男,湖北天门人,教授,博士,主要从事水资源系统分析与可持续利用的研究。E-mail:hoxiwa@aliyun.com
  • 基金资助:
    国家自然科学基金项目(52069009);云南省教育厅科学研究基金项目(2020J0056)

Temporal and Spatial Variation of Water Vapor Transport over the Main Water-receiving Area of Water Diversion Project in Central Yunnan Province

HE Shi-hua1, LAI Yi-zhou1, YE Feng-yan2, SHEN Chun-ying1, PAN Feng1   

  1. 1. Faculty of Electric Power Engineering,Kunming University of Science and Technology,Kunming 650500, China;
    2. Yunnan Design Institute Group Co., Ltd., Kunming 650118, China
  • Received:2021-02-01 Revised:2021-04-21 Online:2022-05-01 Published:2022-05-17

摘要: 基于ERA-Interim再分析资料,以滇中引水工程主要受水区为研究对象,计算了受水区上空21 a水汽输送通量及水汽输送通量散度,并对其水汽输送、水汽辐合与水汽辐散等特征进行分析,研究其水汽输送时空变化特征。结果表明:研究区年平均水汽输送由西北至东南方向逐渐增加,并以纬向输送为主;水汽来源随季节移动,研究区夏季受西南风控制,水汽输送强度明显小于其他3个季节;5—7月份,研究区水汽输送强度逐渐衰减,7月份,研究区850 hPa气压层南部地区存在水汽辐合中心,450 hPa气压层西南部为水汽辐散带,在西南部易于形成降水。

关键词: 水汽输送, 水汽输送通量, 水汽辐合, 水汽辐散, 滇中引水工程

Abstract: According to the ERA-Interim data, the 21-year water vapor transport flux and divergence over the main water-receiving area of the water diversion project in central Yunnan Province were calculated. The spatial-temporal characteristics of water vapor transport, convergence and divergence in the studied area were also analyzed. Results demonstrate that the annual average water vapor transport in the studied area gradually increases from the northwest to the southeast, and is dominated by latitudinal transport. The source of water vapor moves with the seasons and is controlled by southwest wind in summer. The intensity of water vapor transport in the studied area in summer is significantly lower than that in the other three seasons. From May to July, the intensity of water vapor transport shows a gradual decline. In July, a water vapor convergence center emerges in the south of the studied area on the 850 hPa barosphere and a water vapor divergent zone in the southwest on the 450 hPa barosphere, beneficial for the formation of precipitation in the southwest.

Key words: water vapor transport, water vapor transport flux, water vapor convergence, water vapor divergence, water diversion project in central Yunnan Province

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