Variation characteristics and coordinated emission reduction of air pollutants in megacity of Chengdu-Chongqing economic circle under dual carbon goal DOI Open Access

Xiaoju Li,

Luqman Chuah Abdullah, Shafreeza Sobri

et al.

Environmental Engineering Research, Journal Year: 2023, Volume and Issue: 29(4), P. 230475 - 0

Published: Nov. 8, 2023

The air pollution process and impact mechanism of megacities located in complex terrain are particularly complex. As a typical megacity China, Chengdu has unique topographical meteorological conditions, its control is difficult. This study systematically elucidated the variation characteristics six criteria pollutants between 2014 2020. Besides, PM<sub>2.5</sub>/PM<sub>10</sub> NO<sub>2</sub>/SO<sub>2</sub> ratios were discussed. Furthermore, detailed analysis correlation was carried out. Finally, collaborative path carbon reduction results indicated that SO<sub>2</sub>, PM<sub>2.5</sub>, PM<sub>10</sub> CO significantly decreased by 62.9%, 50.8%, 45.5%, 36.7%, respectively. PM<sub>2.5</sub> O<sub>3</sub> compliance rates very low, increases with fluctuations. NO<sub>2</sub>, CO, PM showed “U-shaped” seasonal variation, there “seesaw” phenomenon PM<sub>2.5</sub>. continuous changing trends also found NO<sub>2</sub>/SO<sub>2</sub>. highlight importance coordinated emissions Chengdu. research can improve prediction accuracy areas under global warming, understanding formation special terrains around world.

Language: Английский

Variation characteristics and coordinated emission reduction of air pollutants in megacity of Chengdu-Chongqing economic circle under dual carbon goal DOI Open Access

Xiaoju Li,

Luqman Chuah Abdullah, Shafreeza Sobri

et al.

Environmental Engineering Research, Journal Year: 2023, Volume and Issue: 29(4), P. 230475 - 0

Published: Nov. 8, 2023

The air pollution process and impact mechanism of megacities located in complex terrain are particularly complex. As a typical megacity China, Chengdu has unique topographical meteorological conditions, its control is difficult. This study systematically elucidated the variation characteristics six criteria pollutants between 2014 2020. Besides, PM<sub>2.5</sub>/PM<sub>10</sub> NO<sub>2</sub>/SO<sub>2</sub> ratios were discussed. Furthermore, detailed analysis correlation was carried out. Finally, collaborative path carbon reduction results indicated that SO<sub>2</sub>, PM<sub>2.5</sub>, PM<sub>10</sub> CO significantly decreased by 62.9%, 50.8%, 45.5%, 36.7%, respectively. PM<sub>2.5</sub> O<sub>3</sub> compliance rates very low, increases with fluctuations. NO<sub>2</sub>, CO, PM showed “U-shaped” seasonal variation, there “seesaw” phenomenon PM<sub>2.5</sub>. continuous changing trends also found NO<sub>2</sub>/SO<sub>2</sub>. highlight importance coordinated emissions Chengdu. research can improve prediction accuracy areas under global warming, understanding formation special terrains around world.

Language: Английский

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