邯郸一次重污染天气过程分析

发布时间：2018-03-02 02:16

本文关键词： 重污染气象要素地面形势场　出处：《环境科学与技术》2016年S2期 　论文类型：期刊论文

【摘要】：利用常规气象观测资料和邯郸环境监测资料,针对邯郸2015年12月26日下午PM_(10)和PM_(2.5)污染指数骤升的重污染天气过程,从逐时污染指数变化、气象要素的演变、气象扩散条件和逐时地面要素场特征等方面进行了分析。结果表明:PM_(10)和PM_(2.5)污染指数的陡升与气温骤降、相对湿度骤升相对应;逆温层的存在不利于空气污染物的扩散;地面风场的辐合早于污染指数的快速增加,地面风速逐渐增大和北方湿冷空气的南下,与污染指数陡升相对应,导致本次重污染天气过程的产生。
[Abstract]:Based on the conventional meteorological observation data and the Handan environmental monitoring data, according to the heavy pollution weather process in the afternoon of December 26th 2015 in Handan, where the pollution index suddenly rises, the change of the pollution index is from time to time, and the evolution of meteorological elements. The results show that the sharp rise of the pollution index corresponds to the sudden drop of air temperature and the sudden rise of relative humidity, and the existence of inversion layer is not conducive to the diffusion of air pollutants. The convergence of the surface wind field is earlier than the rapid increase of the pollution index, and the surface wind speed gradually increases and the wet cold air in the north goes south, corresponding to the sharp rise of the pollution index, which leads to the production of the heavy polluted weather process.
【作者单位】：邯郸市气象局;涉县气象局;
【基金】：河北省科技计划项目(13275416)
【分类号】：X51

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