卡拉达格自然保护区地面臭氧浓度变化分析

Pub Date : 2024-07-02 DOI:10.1134/s0001433824700208
E. I. Fedorova, V. A. Lapchenko, N. F. Elansky, V. S. Rakitin, A. I. Skorohod, A. V. Vasilyeva
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引用次数: 0

摘要

摘要 本文介绍了对卡拉达格国家自然保护区背景环境监测站(BEMS)2012-2021 年克里米亚地区地面臭氧浓度变化的研究结果,并对 2016 至 2021 年的最近 6 年进行了更详细的分析。尽管监测站附近没有明显的人为污染源,但观测区域的地面臭氧空气污染水平明显偏高。研究了地面臭氧浓度与气象参数之间的关系,并确定了导致地面臭氧污染水平上升的特征风向。分析了年际变化,并确定了导致个别年份当地夏季地面臭氧浓度最低值的因素。利用 NOAA HYSPLIT 模型和 ERA5 再分析气象场,对该地区的大气环流模式进行了空间分析。评估了臭氧浓度超过世界卫生组织(WHO)建议的 8 小时平均允许浓度 100 μg/m3 的事件的重复发生情况,并确定了这些事件的可能原因。确定了长程飘移的机制及其对监测站地区臭氧状况的影响。经评估,2012 年至 2021 年期间地面臭氧浓度的年度趋势在统计学上并不显著。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Ground-Level Ozone Concentration Variability Analysis in the Karadag Nature Reserve

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Ground-Level Ozone Concentration Variability Analysis in the Karadag Nature Reserve

Abstract

This paper presents the results of a study of ground-level ozone concentration variability in Crimea at the background environmental monitoring station (BEMS) of the Karadag State Nature Reserve for 2012–2021 with a more detailed analysis of the last 6 years from 2016 to 2021. A significantly high level of air pollution by ground-level ozone in the observation area was revealed, despite the absence of significant sources of anthropogenic pollution in the vicinity of the station. The relationship between the ground-level ozone concentration and meteorological parameters has been studied, and characteristic wind directions leading to increased levels of ground-level ozone pollution have been established. Intra-annual variations are analyzed, and factors causing a local summer minimum of ground-level ozone concentration in individual years are identified. Using the NOAA HYSPLIT model and ERA5 reanalysis meteorological fields, a spatial analysis of the atmospheric circulation pattern in the region has been carried out. The recurrence of episodes in which the permissible 8-h average ozone concentration level of 100 μg/m3, as recommended by World Health Organization (WHO), was exceeded has been assessed, and the possible causes of these episodes are identified. Mechanisms of long-range transport and their contribution to the ozone regime in the station area have been established. Annual trends in ground-level ozone concentration between 2012 and 2021 are assessed as statistically insignificant.

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