城市新区大气混合层高度特征分析  

Characteristics Analysis of Different Atmospheric Mixed Layer Heights in an Urban New District

作　　者：景冰清 彭王敏子 胡婷莛 沈竞 JING Bingqing;PENG Wangminzi;HU Tingting;SHEN Jing(School of Chemistry and Chemical Engineering,Shanghai University of Engineering Science,201620,Shanghai,PRC;Jiangxi Academy of Meteorological Science,330096,Nanchang,PRC)

机构地区：[1]上海工程技术大学化学化工学院,上海201620 [2]江西省气象科学研究所,南昌330096

出　　处：《江西科学》2023年第5期994-998,1004,共6页Jiangxi Science

基　　金：江西省科技厅重点研发计划项目(20202BBGL73063)。

摘　　要：分析大气混合层高度的时空变化特征,为优化城市新区内各类型重点大气污染源的布局提供科学依据。收集江西某城市新区内2个气象观测站近10年逐小时实测风速数据及ERA再分析云量数据,采用国标法计算得到能反映两地大气扩散条件的大气混合层高度的逐时数据,并结合2016—2020年该区域空气质量数据,利用SPSS分析大气混合层高度与区域大气污染状况之间的相关性。该城市新区内两地的大气混合层高度有明显差别,但随时间变化的特征总体相同;污染条件下,混合层高度与大气污染物之间的相关性较高且明显优于空气质量等级“优、良”条件下。大气扩散能力的变化特征明显且存在区域差异。In hopes of optimizing the locations of various types of important atmospheric pollution sources in the new urban areas,the spatial and temporal variation characteristics of atmospheric mix-edlayer heights were assessed.Over the past decade,hourly recorded wind speed data and ERA re-analysis cloud cover data from two meteorological observation stations in a new metropolitan region in Jiangxi province were captured.The hourly data of the atmospheric mixed layer heights,which can reflect the atmospheric diffusion conditions of the different locations,were calculated using the na-tional standard method.SPSS was used to analyze the correlation between atmospheric mixed-layer heights and regional air pollution using data from the region’s air quality from 2016 to 2020.The heights of the different atmospheric mixed layers vary noticeably between the two sites in the new ur-ban area,but the characteristics of variation with time are the same.The correlation between the heights of the mixed layer and air pollutants is considerably greater and infinitely better under pollu-tion conditions than under“superior and better”air quality levels.Regional differences and straight-forward variation characteristics of atmospheric diffusion capacity exist.

关 键 词：大气扩散条件 大气混合层高度 区域空气质量 SPSS相关性分析 

分 类 号：P426.54[天文地球—大气科学及气象学] X87[环境科学与工程—环境工程]