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银川市大气混合层高度变化特征及其与空气污染的关系

马宁 任芝花 王建英 杨有林 卫建国 李新庆

马宁, 任芝花, 王建英, 等. 2022. 银川市大气混合层高度变化特征及其与空气污染的关系[J]. 气候与环境研究, 27(4): 495−503 doi: 10.3878/j.issn.1006-9585.2021.21010
引用本文: 马宁, 任芝花, 王建英, 等. 2022. 银川市大气混合层高度变化特征及其与空气污染的关系[J]. 气候与环境研究, 27(4): 495−503 doi: 10.3878/j.issn.1006-9585.2021.21010
MA Ning, REN Zhihua, WANG Jianying, et al. 2022. Variation Characteristics of the Atmospheric Mixed Layer Height and Their Telation to the Air Pollution in Yinchuan [J]. Climatic and Environmental Research (in Chinese), 27 (4): 495−503 doi: 10.3878/j.issn.1006-9585.2021.21010
Citation: MA Ning, REN Zhihua, WANG Jianying, et al. 2022. Variation Characteristics of the Atmospheric Mixed Layer Height and Their Telation to the Air Pollution in Yinchuan [J]. Climatic and Environmental Research (in Chinese), 27 (4): 495−503 doi: 10.3878/j.issn.1006-9585.2021.21010

银川市大气混合层高度变化特征及其与空气污染的关系

doi: 10.3878/j.issn.1006-9585.2021.21010
基金项目: 国家自然科学基金项目91744209,宁夏回族自治区重点研发计划项目2019BFG02025、2021BEG03006
详细信息
    作者简介:

    马宁,女,1983年出生,硕士,高级工程师,主要从事气象数据分析处理。E-mail: mn_2001@126.com

    通讯作者:

    任芝花, E-mail: rzh@cma.gov.cn

  • 中图分类号: P241

Variation Characteristics of the Atmospheric Mixed Layer Height and Their Telation to the Air Pollution in Yinchuan

Funds: National Natural Science Foundation of China (Grant 91744209), Key Research and Development Project of Ningxia Hui Autonomous Region (Grants 2019BFG02025 and 2021BEG03006)
  • 摘要: 基于银川高空站2008~2017年的L波段秒级数据和地面观测数据,利用干绝热法计算银川2008~2017年逐时大气混合层高度,分析其变化特征,同时利用银川6种污染物的质量浓度和AQI指数,分析大气混合层高度与空气污染物的关系。结果表明:银川市的大气混合层高度(MLH)大部时间在600 m以下,占比为68%;银川MLH具有明显的单峰型日变化特征,07:00(北京时间,下同)最低,16:00最高;各月MLH值在282~936 m,4~6月MLH值最高,12月MLH值最低;季节变化方面,春季最高,夏季次之,冬季最低;年变化方面,2012年MLH平均值最高为621 m,2015年最低为566 m;银川市6种污染物除O3外,其余5种污染物的质量浓度与MLH值都为负相关,O3与MLH值的相关性最好;四季中,冬季污染物浓度与MLH值的相关性最好,夏季最差,秋季好于春季;银川MLH值与AQI指数呈负相关。
  • 图  1  2008~2017年银川市年平均和四季平均MLH日变化

    Figure  1.  Annual and seasonal average daily changes the mixed layer height (MLH) in Yinchuan during 2008–2017

    图  2  2008~2017年银川市MLH(a)月平均、(b)季节平均、(c)年平均变化

    Figure  2.  Variations in the (a) month, (b) season, and (c) year of MLH in Yinchuan during 2008–2017

    图  3  银川2008~2017年600 m以下高度区间在各时次出现频率

    Figure  3.  Frequency of range of MLH in Yinchuan during 2008–2017

    图  5  2013~2017年银川市不同空气质量级别与MLH平均值的关系

    Figure  5.  Annual average mixed layer height during the pollutant concentration level in Yinchuan during 2013–2017

    图  4  2013~2017年银川市各污染物质量浓度变化与MLH变化比较:(a)SO2;(b)NO2;(c)PM10;(d)CO;(e)O3;(f)PM2.5

    Figure  4.  Comparison between the pollutant concentration and the mixed layer height in Yinchuan during 2013–2017: (a) SO2; (b) NO2; (c) PM10; (d) CO; (e) O3; (f) PM2.5

    表  1  银川市2008~2017年各月平均MLH值

    Table  1.   Monthly average of MLH in Yinchuan during 2008–2017 m

    月平均MLH
    2008年2009年2010年2011年2012年2013年2014年2015年2016年2017年
    1月234338319372278289283264345297
    2月354359308429491469380463431433
    3月759680653733723698690672614648
    4月923879920100510011090842831878992
    5月98792789088890486110939598241029
    6月1054995843842929810754898846780
    7月720692674770639605803745742692
    8月632552604656667732589648607529
    9月458483470532631564476500534512
    10月454524562423513465459361450404
    11月394272357291361395270256375359
    12月383298327251319270293193229254
    下载: 导出CSV

    表  2  银川市2013~2015年日MLH平均值与污染物质量浓度相关系数

    Table  2.   Correlation coefficient of the average MLH and the mass concentration of pollutants in Yinchuan during 2013–2015

    MLH日平均值与污染物质量浓度相关系数
    SO2NO2PM10COO3PM2.5
    春季−0.34−0.04−0.30−0.250.43−0.39
    夏季−0.07−0.07−0.03−0.060.40−0.13
    秋季−0.34−0.34−0.36−0.500.49−0.48
    冬季−0.45−0.48−0.43−0.530.50−0.51
    全年−0.49−0.40−0.25−0.480.64−0.47
    下载: 导出CSV

    表  3  污染物质量浓度二级标准与超标MLH最大值范围列表

    Table  3.   Pollutant concentration level two and list of maximal mixed layer height ranges

    污染物质量浓度二级标准超标MLH最大值范围/m
    SO2150 μg m−3600
    NO280 μg m−3600
    PM10150 μg m−31200
    CO4 mg m−3200
    O3160 μg m−31300
    PM2.575 μg m−31100
    下载: 导出CSV
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  • 收稿日期:  2021-01-13
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