四川环境2025，Vol.44Issue(2)：36-45,10.DOI:10.14034/j.cnki.schj.2025.02.005
基于ERA5再分析资料的宁波市臭氧污染气象特征分析
Analysis on Pollution Characterization of Ozone in Ningbo from ERA5 Reanalysis Data
摘要
Abstract
A preliminarily assessment on the applicability of ERA5 reanalysis data of ozone was carried out by using the ozone data observed from 2018 to 2021 in Zhejiang.The results showed that the ERA5 ozone reanalysis data had good applicability under sunny days from April to September.On this basis,the horizontal and vertical distribution characteristics of ozone concentration in Ningbo from April to September were studied,so as to provide a theoretical basis for improving the accuracy of ozone forecasting and precise pollution prevention and control.The mass mixing ratio of ozone at 1000 hPa in East China and the sea is greater in the north and less in the south.From April to May and in September,the northeast wind in the north of Ningbo and the east wind in the south of Ningbo were conducive to the transmission of high-concentration ozone from the sea to the land.The latitudinal distribution of ozone concentration was relatively stable,and the boundary of 100 µg/kg was maintained at 500-600 hPa.The latitudinal distribution was greater in the north than in the south,and the difference was more obvious in the lower altitudes.The maximum difference of ozone mass mixing ratio was about 14 μg/kg from June to July.The weather conditions of large-scale downdraft are conducive to ozone transmission,and the effect is as follows:downdraft outside typhoon in summer＞ridge area in spring＞subtropical high in summer.The ground-level ozone pollution is easily caused by transport from stratosphere to tropo-sphere.关键词
臭氧/ERA5臭氧再分析资料/平流层向对流层传输现象Key words
Ozone/ERA5 reanalysis data of ozone/Stratosphere-to-troposphere transport process分类
资源环境引用本文复制引用
徐璐,胡晓,许岳庭,胡波,郑艳..基于ERA5再分析资料的宁波市臭氧污染气象特征分析[J].四川环境,2025,44(2):36-45,10.基金项目
宁波市自然科学基金项目(2023J235) （2023J235）
宁波市气象科技计划重点项目(NBQX2023004A) （NBQX2023004A）
宁波市气象科技计划项目(NBQX2022006B). （NBQX2022006B）
