Study on the Relationship Between Ozone Pollution and Its Meteorological Factors During 2015-2021 Summer in Ningbo
Based on Ningbo ozone monitoring data and surface meteorological observation data in summer half year of 2015-2021(from April to October),characteristics of Ningbo weather and meteoro-logical elements with over ozone standard in summer half year were analyzed.Combined with sea level pressure field of the same period,the atmospheric circulation situation is classified to sum up the weather situation of high concentration ozone in Ningbo.The result shows that months with high inci-dence of ozone pollution in Ningbo appear in April,May and September.The change of near-ground ozone concentration is closely related to temperature,humidity,precipitation,sunshine and wind speed.High concentration of ozone pollution is the consequence of multiple factors.Through the general investigation into historical weather maps,six main weather situations concurrent with the high concen-tration ozone cases in Ningbo are summarized.In April and May,it is mainly high pressure center type,high pressure bottom type and high pressure rear type.In August,it is more affected by typhoon.Days of typhoon type significantly increased.In September,weather situation is static and stable rela-tively.Ozone pollution mostly occurs in uniform pressure field and low pressure type.Overall,in all six weather situations,uniform pressure field has the most probability of high incidence of ozone pollution,accounting for 38.2%,with highest ozone concentration and an average of 192 μg·m-3.
NETL
NSTL
万方数据
