2012—2019年河北省不同气候区酸雨特征及影响因子分析  

Characteristics of Acid Rain Events in Different Climatic Regions of Hebei Province during 2012-2019 and It's Impact Factors

作　　者：李莹 赵振东[1] 李文星[1] 张静[1] LI Ying;ZHAO Zhendong;LI Wenxing;ZHANG Jing(Hebei Branch of China Meteorological Administration Training Centre,Baoding 071000,China)

机构地区：[1]中国气象局气象干部培训学院河北分院,河北保定071000

出　　处：《沙漠与绿洲气象》2023年第3期99-106,共8页Desert and Oasis Meteorology

基　　金：中国气象局气象干部培训学院项目(2021021);中国气象局气象干部培训学院河北分院自立教科研项目(2021kyd01)。

摘　　要：利用河北省20个酸雨观测站2012—2019年的酸雨观测日数据和2013—2019年的SO_(2)、CO、NO_(2)、O3、PM10、PM2.5环境气象逐日数据,分析了河北省不同气候区酸雨特征及其与其他要素的关系。结果表明:(1)近8年来,强、弱酸雨日数呈逐年减少趋势。强、弱酸雨在燕山丘陵气候区与冀东平原气候区交界的东部发生概率均较其他地区高。此外,弱酸雨在太行山气候区与山前平原气候区交界的南部发生概率较高。(2)当降水级别为小雨,太行山气候区主导风向为北风、山前平原气候区主导风向为东北风、冀东平原气候区主导风向为东北风、燕山丘陵气候区主导风向为东风、冀北高原气候区主导风向为东南风,有利于河北省各气候区发生强酸雨。(3)冀北高原气候区及山前平原气候区发生大雨及以上级别的降水事件时,对SO_(2)、NO_(2)清除效果较好;燕山丘陵气候区、太行山气候区及冀东平原气候区发生中小雨级别的降水事件时,对SO_(2)、NO_(2)清除效果较好。Based on the daily observational data of acid rain during 2012-2019 and air pollutants of SO_(2),CO,NO_(2),O_3,PM_(10),PM_(2.5)during 2013-2019 of the 20 acid rain observatories in Hebei province,the characteristics of acid rain and its relationship with other environmental factors in different climatic regions were analyzed.Results showed that:(1)There was a decreasing trend of both strong and weak acid rain days in the past 8 years.In terms of the spatial distribution,the occurrence probability of acid rain in the eastern part of the junction between Yanshan hilly climatic region and the Jidong plain climatic region was higher than that in other regions.In addition,weak acid rain was also more likely to occur in the southern part of the junction between Taihang Mountain climatic region and the Shanqian plain climatic region.(2)When the precipitation level was light rain,the dominant wind direction in the Taihang Mountain climatic region was north wind,the dominant wind direction in Shanqian plain climatic region was northeast wind,the dominant wind direction in the Jidong plain climatic region was northeast wind,the dominant wind direction in the Yanshan hilly climatic region was east wind,and the dominant wind direction in the Jibei plateau climatic region was southeast wind,which was conducive to the occurrence of strong acid rain in each climatic region.(3)It has a better removal effect on SO_(2)and NO_(2)if heavy rain or above precipitation events occur in the Jibei plateau climatic region and Shanqian plain climatic region.It has a better removal effect on SO_(2)and NO_(2)if moderate and light rain precipitation events occur in the Yanshan hilly climatic region,the Taihang Mountain climatic region and the Jidong plain climatic region.

关 键 词：酸雨 气候区 降水化学 河北省 

分 类 号：X517[环境科学与工程—环境工程]