河源市2014—2017年空气污染特征及天气类型分析

巫楚<sup>1</sup>; 汪宇<sup>2</sup>; 林小平<sup>1</sup>; 张辉<sup>1*</sup>; 贺发胜<sup>3</sup>

引用本文:	巫楚，汪宇，林小平，张辉，贺发胜.河源市2014—2017年空气污染特征及天气类型分析[J].环境监控与预警,2019,11(3):40-43
	WU Chu, WANG Yu, LIN Xiao-ping, ZHANG Hui, HE Fa-sheng.[J].Environmental Monitoring and Forewarning,2019,11(3):40-43

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河源市2014—2017年空气污染特征及天气类型分析
巫楚，汪宇，林小平，张辉，贺发胜^1,2,3
1.河源市环境监测站，广东河源 517000;2. 广东省环境监测中心，广东广州 510220;3. 河源市气象台，广东河源 517000

摘要:

利用2014—2017年河源城区环境空气自动监测站数据和气象数据，对期间出现的污染天气过程进行统计，对影响污染的天气类型进行分类。结果表明，2014—2017年，河源城区累计出现污染天气65 d，超标污染物主要为PM_2.5和O₃，O₃超标比例逐年上升成为达标率首要影响因子。PM_2.5易污染天气型中冷高压出海占比最多（38.2%），其次为冷锋前（17.7%）和均压场（14.8%）；O₃易污染天气型中副高控制占比最多（31.0%），其次为副高叠加台风外围（24.1%）和冷高压出海（13.8%）及均压场（13.8%）。河源城区低程度污染（AQI值101～110）占比较大。

关键词: 污染特征天气类型细颗粒物臭氧河源市空气质量指数

DOI：

分类号:X823

文献标识码:B

基金项目:广东省省级科技计划基金资助项目(2017B020216007)；河源市社会发展科技计划专项基金资助项目(180705150222485)

WU Chu, WANG Yu, LIN Xiao-ping, ZHANG Hui, HE Fa-sheng^1,2,3

1. Heyuan Environmental Monitoring Station, Heyuan,Guangdong 517000, China;2. Guangdong Environmental Monitoring Center, Guangzhou,Guangdong 510220, China;3. Meteorological Bureau of Heyuan City, Heyuan， Guangdong 517000, China

Abstract:

Based on the data from the ambient air automatic monitoring station and the meteorological data in Heyuan city from 2014 to 2017, the polluted weather process was statistically analyzed and the weather pattern that affects the pollution was classified. The research showed that there were 65 pollution days in Heyuan city during 2014 to 2017. The pollutants exceeding the standard were mainly PM_2.5 and ozone. The proportion of ozone exceeding the standard increased year by year and became the primary influencing factor of the air quality. Cold high pressure moving to sea had the largest proportion (38.2%) of the weather types which are prone to PM_2.5 pollution, followed by before the cold front type (17.7%) and the uniform pressure field type (14.8%). Subtropical high (31.0%) dominated the ozone pollution weather types, followed by subtropical high pressure superimposed typhoon peripheral type (24.1%), cold high sea type (13.8%) and uniform pressure field type (13.8%). Low level pollution (AQI value 101~110) accounts for a large proportion in Heyuan.

Key words: Pollution characteristics Weather type PM_2.5 Ozone Heyuan Air quality index