近2年阿克达拉臭氧浓度特征及气象因素的影响

利用2017~2018年阿克达拉逐时臭氧浓度监测数据和同期气象观测资料,分析了阿克达拉近地面臭氧浓度的日変化和年季变化特征,并分析了臭氧浓度与气象条件之间的关系。结果表明：臭氧浓度日变化呈现单峰型,下午16点前后达到最高值,最高值分别为42.86 ppb和38.37 ppb；2017和2018年阿克达拉臭氧最高月分别出现在3月和2月,月平均臭氧浓度为49.37 ppb和37.94 ppb,最低月出现在12月,浓度为18.36 ppb和18.90 ppb；2017~2018年阿克达拉近地面臭氧浓度的季节变化规律为：春季＞夏季＞冬季＞秋季；阿克达拉的主导风向是NW和E,夏季主导风向为NW,冬季则以偏东风为主；夏季受西北气流影响,阿克达拉西北方向的污染源对当地近地面臭氧浓度影响较大。

The Variation Characteristics and Meteorological Factors of Surface Ozone Concentration in the Akdara in Recent Two Years

Based on the hourly ozone concentration monitoring data of Akdara from 2017 to 2018 and the meteorological observation data of the same period, we analyzed the characteristics of daily raking and seasonal variation of ozone concentration near the surface of Akdara, and discussed the relationship between ozone concentration and meteorological conditions. The results showed that the diurnal variation of ozone concentration showed a single peak pattern, reaching the highest values around 16 p.m., with 42.86 ppb and 38.37 ppb respectively; the highest ozone concentration in Akdara occurred in March and February in 2017 and 2018, with an average monthly ozone concentration of 49.37 ppb and 37.94 ppb, and the lowest ozone concentration in December, with 18.36 ppb and 18.37 ppb respectively. 90 ppb; the seasonal variation of ozone concentration near the surface of Akdara from 2017 to 2018 is as follows: spring > summer > winter > autumn; the dominant wind direction of Akdara is NW and E, the dominant wind direction in summer is NW, and the easterly wind is dominant in winter; the pollution source in northwest direction of Akdara is odorous to the local near-surface in summer due to the influence of Northwest airflow.