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青藏高原典型区域臭氧浓度变化及VOCS特征分析

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基于青藏高原环境空气中臭氧污染指标研究的重要性,选取位于高原东部的甘孜州区域作为研究对象,通过获取2020年 1月1 日~2023 年6 月30 日臭氧监测数据,经数据透视表处理给出24 小时浓度均值变化趋势,同时结合GIS处理,研究其空间变化规律,得出甘孜州所在的青藏高原区域臭氧浓度时空分布特征为:臭氧浓度较高时段主要集中在3月、4 月、5月和7 月,其中3 月~5 月浓度整体偏高与春季气温升高、紫外线增强、生产生活排放臭氧前体物增加以及植物季节性释放VOC浓度升高有关,7 月受夏季强辐射天气影响以及旅游旺季氮氧化物、VOC排放量增加有关.
Analysis of Ozone Concentration Variation and VOCS Characteristics in Typical Regions of Qinghai-Tibet Plateau
Based on the importance of the research on environmental air ozone pollution indicators in the Tibetan Plateau,Ganzi Prefecture in the eastern part of the Plateau was selected as the research object.Through obtaining ozone monitoring data from January 1,2020 to June 30,2023,the 24-hour mean concentration variation trend was presented through PivotTable processing,and its spatial variation rule was studied by combining GIS processing.The spatial and temporal distribution characteristics of ozone concentration in the Tibetan Plateau region where Ganzi Prefecture is located are as follows:The period of high ozone concentration is mainly concentrated in March,April,May and July,among which the overall high concentration in March to May was related to the rise of spring temperature,the enhancement of ultraviolet rays,the increase of ozone precursors emitted by production and life,and the increase of VOC concentrations released by plants in season,and the impact of summer strong radiation weather and the increase of nitrogen oxides and VOC emissions in tourist season.

Tibetan Plateauozonespatio-temporal variation characteristics

杨争娇、刘筱谦、王婷、蒋宇超、齐国伟

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四川省甘孜生态环境监测中心站,四川 甘孜 626700

四川省乐山生态环境监测中心站,四川 乐山 614000

青藏高原 臭氧 时空变化特征

2024

广东化工
广东省石油化工研究院

广东化工

影响因子:0.288
ISSN:1007-1865
年,卷(期):2024.51(17)