主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

Journal of Meteorology and Environment ›› 2023, Vol. 39 ›› Issue (3): 97-105.doi: 10.3969/j.issn.1673-503X.2023.03.012

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Analysis of the characteristics of local wind in the Three Gorges Reservoir area

Qu GUO1(),Yong WANG1,*(),Rui LI2,Tian-yu ZHANG1,Zu-heng HU1,Fen ZHANG1   

  1. 1. Chongqing Climate Center, Chongqing 401147, China
    2. Ji′nan Meteorological Service, Ji′nan 250002, China
  • Received:2021-08-03 Online:2023-06-28 Published:2023-07-25
  • Contact: Yong WANG E-mail:guoqu510@163.com;wngyng@hotmail.com

Abstract:

Using the hourly data of five heights (10, 30, 50, 70, and 100 m) observed by the 100-meter wind tower at Muhe in the Fuling district, Chongqing in the Three Gorges Reservoir area, belonging to the local climate monitoring subsystem in ecology and environment monitoring network of the Yangtze River Three Gorges project, from 2010 to 2020, the characteristics of vertical change of local wind were analyzed.The results show that the wind speed at the same height is the biggest in spring and the smallest in winter, and shows a typical diurnal variation of the single peak type, reaching a bottom at about 9 o′clock and a peak at about 16 o′clock.The wind speed at 30~100 m height is almost the same during 10-13 o′clock in summer.The local wind direction is mainly influenced by the local terrain.The frequency of local wind direction along(SSW~ENE)the Yangtze River Valley at different heights ranges between 46% and 66%.When there is rainfall, the vertical difference of wind speed with the order from large to small is torrential rain, heavy rain, moderate rain, and light rain, respectively, and the vertical gradient of wind speed increases with the temperature increasing.When there is temperature inversion at night, the wind speed at 50 m height is smaller than that at 30 m height.

Key words: Local wind, Vertical difference, the Three Gorges Reservoir area

CLC Number: