Journal of Arid Meteorology ›› 2020, Vol. 38 ›› Issue (6): 929-936.

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Observation Analysis on Cold Air Lake Structure in the Biathlon Venue for Beijing 2022 Winter Olympic Games


  1. 1. Qinhuangdao Meteorological Bureau of Hebei Province, Qinhuangdao 066000, Hebei, China;
    2. Hebei Meteorological Observatory, Shijiazhuang 050021, China;
    3. Handan Meteorological Bureau of Hebei Province, Handan 056000, Hebei, China
  • Online:2020-12-31 Published:2021-01-06



  1. 1.河北省秦皇岛市气象局,河北秦皇岛066000;2.河北省气象台,河北石家庄050021;
  • 通讯作者: 段宇辉(1984— ),男,高级工程师,主要从事短期预报. E-mail:。
  • 作者简介:刘昊野(1992— ),男,河北秦皇岛人,工程师,主要从事短期预报与山地气象研究. E-mail:。

Abstract: Based on the observations of thermometers installed at the slopes and bottom of the valley in Chongli zone for Beijing 2022 Olympic winter games, the temperature variations at different heights under different circulation backgrounds from 4 to 18 March 2019 were analyzed, and the law of emergence and breaking of the cold air lake at night under special terrain conditions has been revealed. The results show that under the non-stationary situation, there was normal temperature stratification in the vicinity of the experimental stations and no cold air lake developed. Under the stationary situation, there was obvious cold air lake in the valley. Due to the special topography of the area, the east-southeast wind at the valley bottom appeared together with the cold air lake and the depth of the cold air lake was related to the degree of the weather static stability and changed dynamically with time. The development or disappearance of the cold air lake was directly related to the wind speed. When large-scale system wind was weak, the gravity wind played a leading role in the valley and cold air lake developed. When the large-scale system wind was strong, it played a leading role and increase of wind speed led to the enhancement of wind shear and the generation of turbulence, which mixed downward momentum with warm air. Also the airflow over the mountain led to foehn effect, then the structure of the cold air lake disappeared.

Key words: Beijing 2022 Olympic winter games, mountain meteorology, cold air lake, observation experiment

摘要: 利用安装在北京冬奥会崇礼赛区山坡及山谷底部的自动气象站观测资料,对2019年3月4—18日不同环流背景下、不同高度的温度变化特征进行分析,揭示特殊地形条件下夜间冷湖现象的出现与打破规律。结果表明,非静稳形势下,实验站点附近为正常温度层结,不存在冷湖结构。静稳形势下,山谷中存在突出的冷湖,由于该地特殊地形作用,谷底东—东南风伴随冷湖结构一同出现,且冷湖深度与天气静稳程度有关,并随时间动态变化。冷湖系统建立和打破与系统风速大小有直接关系:当系统风较小时,山谷中重力风起主导作用,冷湖结构建立;当系统风较大时,系统风起主导作用,风速加大导致风切变增强和产生湍流,该湍流混合向下动量和温暖空气,气流过山产生焚风效应,冷湖结构消失。

关键词: 北京2022冬奥会, 山地气象, 冷空气湖, 观测实验