摘要
混合层高度(MLH)和气溶胶层高度(ALH)作为表征污染物在大气垂直结构上的最大高度,两者在某些情况下可近似相等,为探究成都市MLH和ALH是否可以等价替换使用,该文利用2017-2019年四川省环保厅超级监测站(西南交通大学站)以及同期成都温江探空站的监测数据,对成都市MLH和ALH的相关性和差异性进行分析研究。结果表明,MLH和ALH在数据分布上具有较大差异性,且MLH和ALH两者在数据上具有较弱的负相关关系。对成都市ALH和MLH的时间变化规律进行分析和研究表明,ALH在一般情况下明显高于MLH,但在白天,温度和辐射较强的时间段,ALH会低于MLH。因此在使用成都市MLH数据时,不能简单地将MLH用ALH进行替换。
The mixed layer height(MLH)and aerosol layer height(ALH)are utilized as a characterization of the maximum height of pollutants over the vertical structure in the atmosphere,and they can be similar in some cases.In order to explore whether MLH and ALH in Chengdu can be replaced equivalently,the monitoring data of super monitoring station(Southwest Jiaotong University Station)of Sichuan Provincial Environmental Protection Department from 2017 to 2019 and Wenjiang exploration station in the same period are used to analyze the correlation and difference between MLH and ALH.The results show that MLH and ALH have a significant difference,and MLH and ALH have a weak negative correlation in data.Through the analysis and research on the temporal variation of ALH and MLH in Chengdu,it illustrates that ALH is significantly higher than MLH in general,but ALH is lower than MLH in the daytime when temperature and radiation are strong.Therefore,we can not simply replace MLH with ALH when analyzing the data of MLH in Chengdu.
作者
明镇洋
侯梦琪
王文勇
付虹
张江鹏
李迪
MING Zhenyang;HOU Mengqi;WANG Wenyong;FU Hong;ZHANG Jiangpeng;LI Di(Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 611756,China)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2021年第7期76-83,共8页
Environmental Science & Technology
基金
四川省科技计划项目(2018SZ0315)
关键词
混合层高度
气溶胶层高度
相关性分析
成都市
mixed layer height(MLH)
aerosol layer height(ALH)
correlation analysis
Chengdu
