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中国沙漠 ›› 2024, Vol. 44 ›› Issue (1): 209-217.DOI: 10.7522/j.issn.1000-694X.2023.00146

• • 上一篇    

不同路径冷空气导致的宁夏沙尘重污染天气特征及传输规律

袁瑞瑞1,2,3(), 王建英1,2,3(), 张卫红4, 张肃诏1,2,5, 王坤1,2,3, 雍佳1,2,3   

  1. 1.中国气象局旱区特色农业气象灾害监测预警与风险管理重点实验室,宁夏 银川 750002
    2.宁夏气象防灾减灾重点实验室,宁夏 银川 750002
    3.宁夏气象服务中心,宁夏 银川 750002
    4.宁夏回族自治区生态环境监测中心,宁夏 银川 750002
    5.宁夏气象台,宁夏 银川 750002
  • 收稿日期:2023-05-11 修回日期:2023-10-18 出版日期:2024-01-20 发布日期:2023-12-26
  • 通讯作者: 王建英
  • 作者简介:王建英(E-mail: jianying916@163.com
    袁瑞瑞(1996—),女,宁夏固原人,硕士,助理工程师,主要从事环境气象服务方面的研究。E-mail: yuanrr_818@163.com
  • 基金资助:
    宁夏回族自治区重点研发计划项目(2021BEG03006);宁夏回族自治区生态环境厅重大研究课题“边界层逆温对银川都市圈PM2.5污染的影响及大气环境监测评估技术研究”;中国气象局旱区特色农业气象灾害监测预警与风险管理重点实验室项目(CAMT-202303)

Characteristics of heavy dust pollution weather coused by cold air with different routes in Ningxia, China

Ruirui Yuan1,2,3(), Jianying Wang1,2,3(), Weihong Zhang4, Suzhao Zhang1,2,5, Kun Wang1,2,3, Jia Yong1,2,3   

  1. 1.CMA Key Laboratory for Meteorological Disaster Monitoring and Early Warning and Risk Management of Characteristic Agriculture in Arid Regions,Yinchuan 750002,China
    2.Ningxia Key Laboratory of Meteorological Disaster Prevention and Reduction,Yinchuan 750002,China
    3.Ningxia Meteorological Service Center,Yinchuan 750002,China
    4.Ecological Environment Monitoring Center of Ningxia Hui Autonomous Region,Yinchuan 750002,China
    5.Ningxia Meteorological Observatory,Yinchuan 750002,China
  • Received:2023-05-11 Revised:2023-10-18 Online:2024-01-20 Published:2023-12-26
  • Contact: Jianying Wang

摘要:

为探究不同路径冷空气影响下宁夏沙尘重污染天气的特征及传输规律,利用环境和气象数据及NCEP再分析资料,在对宁夏逐日地面环流分型的基础上,总结了易造成宁夏沙尘重污染天气的环流特征,基于后向轨迹模式,分析了不同路径冷空气影响下的沙尘重污染天气特征及污染来源和贡献率。结果表明:(1)较易造成全区沙尘重污染天气的冷空气路径和环流型为偏西路径型(A、AN、ANW)、西北路径型(AE、ANE、N、NE)和偏北路径型(CE、CSE、E)。(2)偏西路径冷空气影响下,中卫市一般最先出现沙尘重污染;西北路径冷空气影响下,中卫市和石嘴山市先出现沙尘重污染;偏北路径冷空气影响下,石嘴山市最先出现沙尘重污染。(3)偏西和西北路径冷空气影响下,宁夏沙尘传输轨迹以偏西和西北方向为主,沙尘源地主要来自额济纳旗周边戈壁、巴丹吉林沙漠、腾格里沙漠,沙源地对PM10质量浓度的贡献分别为80~160 μg·m-3和>160 μg·m-3;偏北路径冷空气影响下的沙尘传输轨迹以西北和东北方向为主,腾格里沙漠、乌兰布和沙漠、毛乌素沙地对PM10质量浓度的贡献大于140 μg·m-3,其中偏东方向的毛乌素沙地对PM10质量浓度的贡献大于160 μg·m-3。

关键词: 沙尘重污染, 环流分型, 传输规律

Abstract:

To investigate the characteristics and transport rules of cold air in different routes on heavy dust pollution weather in Ningxia, we summarize the circulation characteristics that are easy to cause heavy dust pollution weather in Ningxia on the basis of objective classification of daily ground circulation by using environmental and meteorological data and NCEP reanalysis data. Further, the weather characteristics, pollution sources and contribution rates of heavy dust pollution under the influence of cold air in different routes were analyzed by using the backward trajectory model. The results show that: (1) The cold air routes and circulation pattern that are easy to cause heavy dust pollution weather in the whole region are westward path (A, AN, ANW), northwest path (AE, ANE, N, NE) and northward path (CE, CSE, E). (2) Affected by the cold air along the westward route, Zhongwei was the first city to experience heavy dust pollution; Affected by the cold air along the northwest route, Zhongwei and Shizuishan first experienced heavy dust pollution; Affected by the cold air along the northward route, Shizuishan was the first city to experience heavy dust pollution. (3) Under the influence of cold air along the westward route and the northwest route, the transport track of dust in Ningxia was mainly west and northwest, and the dust sources were mainly from the gobi around Ejin Banner, Badain Jaran Desert and Tengger Desert, the contribution of sand source to the PM10 mass concentration was 80-160 μg·m-3 and above 160 μg·m-3, respectively; Under the influence of cold air along the northward route, the transport track of dust in Ningxia was mainly northwest and northeast, and the contribution of Tengger Desert, Ulanbh Desert and Mu Us Sandy Land to the PM10 mass concentration was above 140 μg·m-3, among which, the contribution of the Mu Us Sandy Land in the easterly direction was above 160 μg·m-3.

Key words: heavy dust pollution, circulation classification, transport rules

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