乌海市PM_（10）污染浓度与气象条件分析

乌海市PM10浓度与风速的关系明显。总体而言,PM10污染物浓度随风速的增大而增大;冬季当风速在3.1～4.0m.s-1时,PM10污染物浓度低。PM10浓度与地面风向的关系：春季偏西风时PM10污染浓度最高,偏北风时污染浓度最低;冬季东南风时污染浓度最高,西北风时污染浓度最低。PM10浓度与空气湿度的关系：冬季PM10污染浓度值随湿度的增加而增加,正相关比较明显。春季当空气湿度越小,出现重度污染的频率越高。

Analysis on PM10 Pollution Concentration and Meteorological Conditions in Wuhai City

PM 10 concentration and the wind speed have obvious relations in Wuhai.Overall,the PM 10 pollutant density increases along with the wind speed increases;In winter,when the wind speed between3.1~4.0m/s,the PM 10 pollutant density is low.PM 10 density and surface wind direction relations: When wind direction lean westerly wind,the PM10 concentration of contaminant is highest in spring,when leaning north wind the concentration of contaminant is lowest;When southeaster the concentration of contaminant is highest,when northwest wind the concentration of contaminant is lowest in winter.PM 10 density and air humidity relations: The winter PM 10 concentration of contaminant value increases along with the humidity increases,positive correlation is clear.The air humidity is smaller in spring,presents the specific weight pollution the frequency to be higher.