辽宁地区O3污染状况及相关气象要素分析

doi:10.3969/j.issn.1673-503X.2021.05.005

摘要/Abstract

摘要：

利用2015—2019年辽宁城市逐小时地面O₃浓度观测数据，结合各城市逐小时气象要素观测数据，分析了辽宁地区近5 a的O₃污染状况及影响O₃的相关气象条件。结果表明：除环辽东湾部分城市O₃浓度呈下降趋势外，辽宁地区其他城市的O₃浓度均呈明显的上升趋势，O₃正取代PM_2.5成为影响辽宁地区的首要大气污染物。O₃浓度具有夏季高、冬季低，下午高、早晨低的时间分布特征。除受污染排放源直接影响外，高温、高湿、强辐射、小风和地面低气压都有利于O₃的局地生成；在亚洲夏季风的影响下，上游地区（如京津冀地区）的污染气团会随大气环流向东北地区输送，对辽宁地区夏季O₃污染产生重要影响。

关键词: O₃污染, 年变化率, 气象条件

Abstract:

We investigated ozone pollution and related meteorological factors in Liaoning province, China using hourly surface ozone concentrations and meteorological observations for the period 2015-2019. The ozone concentrations in Liaoning province appeared to be increasing significantly in all cities, except for several cities around Liaodong Bay. Ozone has taken over PM_2.5 as the main pollutant in Liaoning province. Ozone concentrations were high in summer, but low in winter; and high in the afternoon, but low in the morning. In addition to air pollution emissions, high temperature and humidity, intense radiation, low wind speed, and air pressure were the significant meteorological factors influencing the local ozone production. With the influence of the Asian Summer Monsoon, polluted air masses from upwind direction (e. g. North China Plain) under the southwestern wind influenced the air quality over Liaoning province.

Key words: Ozone pollution, Annual variance ratio, Meteorological factor

中图分类号:

刘宁微, 权维俊, 任万辉, 李晓岚, 李丽光, 王迪. 辽宁地区O₃污染状况及相关气象要素分析[J]. 气象与环境学报, 2021, 37(5): 27-33.

Ning-wei LIU, Wei-jun QUAN, Wan-hui REN, Xiao-lan LI, Li-guang LI, Di WANG. Ozone pollution and the related effects of meteorological factors in Liaoning province, China[J]. Journal of Meteorology and Environment, 2021, 37(5): 27-33.

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地点	气压	气温	相对湿度	风速	总辐射辐照度
沈阳	-0.480^*	0.413^*	-0.012	-0.016	0.352^*
大连	-0.508^*	0.509^*	0.204^*	-0.113^*	0.346^*
鞍山	-0.517^*	0.500^*	0.116^*	0.083	-
丹东	-0.022	-0.022	-0.022	-0.022	0.325^*
营口	-0.556^*	0.491^*	0.244^*	0.010	-

风向	北	北东北	东北	东东北	东	东东南	东南	南东南	南
频率/(%)	3.1	1.8	0.3	2.1	0.7	1.9	4.8	4.4	11.2

风向	南西南	西南	西西南	西	西西北	西北	北西北	静风
频率/(%)	23.9	35.1	6.5	2.3	0.3	0.3	1.0	0.3

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辽宁地区O₃污染状况及相关气象要素分析

Ozone pollution and the related effects of meteorological factors in Liaoning province, China

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