基于TROPOMI数据的湖北省O<sub>3</sub>生成敏感性分析

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Abstract Based on the ground-level ozone (O₃) data from provincial air quality stations and tropospheric HCHO and NO₂ column concentration data from TROPOMI, the spatial and temporal distributions, variation trends and precursor sensitivity of O₃ pollution in Hubei Province from 2019 to 2023 were studied by using the indicator method of O₃ generation sensitivity. The results showed that the concentration of O₃ columns in Hubei Province presented an overall upward trend. For the seasonal variations, the concentrations of O₃ and HCHO were higher in summer and lower in winter, while NO₂ was the opposite. For the spatial distributions, the concentration of O₃ column increased gradually from south to north, and the concentration of NO₂ and HCHO column increased in a stepwise manner from west to east. Through analyzing the spatial distributions of controlling factors for O₃, we found that O₃ generation in most areas of Hubei Province was controlled by NO_x from June to September, and only a small area was controlled by NO_x. Wuhan and its surrounding urban areas in eastern Hubei Province belong to the VOCs-control area, the western Hubei region mainly belongs to the NO_x-control area, the rest of the areas mostly belong to NO_x-VOCs collaborative-control area. After 2019, O₃ generation in eastern Hubei Province has changed from VOCs-control area to NO_x-VOCs collaborative control area.

Key words： TROPOMI O₃ generation sensitivity HCHO NO₂

Received: 17 June 2024

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	YANG Chun-mian
	HUANG Yu
	HUANG Hai-bin
	HE Ze-huang
	CHENG Hai-rong

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YANG Chun-mian,HUANG Yu,HUANG Hai-bin等. Sensitivity analysis of O₃ generation in Hubei Province based on TROPOMI data[J]. CHINA ENVIRONMENTAL SCIENCECE, 2025, 45(1): 50-57.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2025/V45/I1/50

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