摘要
利用襄阳市国测站点数据分析 PM
2.5
污染总体水平,并利用襄阳市监测微站数据,采用空间插值方
法分析冬季典型月份 PM
2.5
时空分布,结合气象数据分析襄阳市 PM
2.5
浓度变化与各类气象要素的
关系。结果显示:①襄阳市 2015—2018 年 PM
2.5
污染逐步改善,但总体污染水平仍然较高,冬季
尤为严重 。②2018 年 2 月,襄阳市 PM
2.5
污染水平 表现为 春节假期>工作日 >休息日( 非春节假
期),工业区污染水平较其他地区偏高。③相关性分析表明,襄阳市的 PM
2.5
浓度与气温和能见度
呈显著负相关,与气压呈显著正相关,与降水、风速、相对湿度等气象要素呈负相关关系。PM
2.5
浓度与气象要素的相关程度在不同季节也存在较大差异。
Abstract
We use the data from national monitoring stations in Xiangyang to analyze its
overall PM
2.5
pollution levels. The spatial interpolation method is used to analyze the
spatiotemporal distribution of PM
2.5
in typical winter months, and the
meteorological data are used to analyze the relationship between PM
2.5
concentration
changes and various meteorological elements. The results show that: PM
2.5
pollution in Xiangyang gradually alleviates from 2015 to 2018, but the overall
pollution level is still high, especially in winter. In February 2018, the pollution
level of PM
2.5
in Xiangyang is in the order of Spring Festival holidays>working
days>closed days (non‐Chinese New Year holidays). The pollution level in the
industrial zone is higher than that in other areas. Correlation analysis shows that
the PM
2.5
concentration in Xiangyang is significantly negatively correlated with air
temperature and visibility, and significantly positively correlated with air
pressure, and also negatively correlated with meteorological elements such as
precipitation, wind speed and relative humidity. The correlation between PM
2.5
concentration and meteorological elements also varies greatly in different seasons.
译
关键词
PM
2.5
; 时空分布; 气象要素; 相关性分析; 襄阳市
Keywords
PM
2.5
; spatiotemporal distribution; meteorological elements; correlation
analysis; Xiangyang
译
PM
2.5
是空气污染物的主要成分之一,其对环境的影响范围和人类健康危害程度远大于其他空气污
染物。目前,对 PM
2.5
的研究已从多方面展开,主要包括 PM
2.5
的数据获取、时空分析、来源解析、
影响机制和健康影响等领域。而当前国内关于 PM
2.5
的时空分布研究多集中在全国
[ 1, 2]
、城市群
[ 3,
4]
和特大型城市
[ 5‐ 7]
尺度上,对中小型城市的 PM
2.5
污染研究较少。本文以襄阳市为研究区,分析