华北大气边界层结构演变对污染扩散的影响分析

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中图分类号：X51 文献标识码：A 文章编号：1008-9500(2026)02-0182-03

DOI: 10.3969/j.issn.1008-9500.2026.02.055

Analysis of Influence of Atmospheric BoundaryLayer Structure Evolution on Pollution Diffusion inNorth China

TIANHong,LILixia,ZHOUXuesong (Hohhot Meteorological Bureau,HohhotO10020, China)

Abstract:Theatmospheric boundarylayer,asakeyregionfortheinteraction between polutantsand theatmospheric environment,directly influences thedifusioncapacityandtransporteficiencyofpolutants.Byanalyzingthespatiotemporal variations inboundarylayer structure inNorth China,astatisticalrelationship modelbetweenboundarylayer height and PM2.5 mass concentration is established,revealing the impact mechanism of boundary layer evolution on pollutant dispersion.The study demonstrates a significant negative correlation between PM2.5 mass concentration and boundary layer height.

Keywords:atmospheric boundary layer; structure evolution; pollution diffusion

我国华北地区由于受独特地形及气象条件的影响，区域污染特征尤为显著。（剩余6086字）