Drivers of alleviated PM2.5 and O3 concentrations in China from 2013 to 2020

IF 11.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling Pub Date : 2023-10-01 DOI:10.1016/j.resconrec.2023.107110

Tian Shao , Peng Wang , Wenxuan Yu , Yueqi Gao , Shengqiang Zhu , Yi Zhang , Donghao Hu , Baojun Zhang , Hongliang Zhang

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引用次数: 0

Abstract

Since 2013, the Chinese Government implemented “Clean Air Action” Phase I (2013–2017) and Phase II (2018–2020) consecutively to improve air quality. However, it remains unclear how these policies have impacted air quality since most studies merely focus on Phase I. In this study, we applied the Community Multiscale Air Quality (CMAQ) model to investigate variations of air quality in China during “Clean Air Action” Phases I and Phase II (2013–2020). Results show that PM_2.5 is significantly reduced (-40%) across China except in summer. O₃ concentration also decreases, but a 3% increase is found in the Beijing-Tianjin-Hebei (BTH) region. Emission changes play a dominant role in the reduction of PM_2.5 (over 95%). The contributions from meteorology and emissions to O₃ reduction are 46% and 54%, respectively. Our results suggest that a more effective emission abatement strategy should be formulated, aiming to control O₃ and PM_2.5 synergistically.

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2013 - 2020年中国PM2.5和O3浓度缓解的驱动因素

自2013年以来，中国政府连续实施了“清洁空气行动”第一阶段（2013-2017）和第二阶段（2018-2020），以改善空气质量。然而，目前尚不清楚这些政策是如何影响空气质量的，因为大多数研究仅集中在第一阶段。在本研究中，我们应用社区多尺度空气质量（CMAQ）模型来调查中国在“清洁空气行动”第一阶段和第二阶段（2013-2020）的空气质量变化。结果显示，除夏季外，中国各地PM2.5显著下降（-40%）。O3浓度也有所下降，但在京津冀地区增加了3%。排放变化对PM2.5的减少起着主导作用（超过95%）。气象和排放对O3减排的贡献分别为46%和54%。我们的研究结果表明，应该制定一个更有效的减排策略，旨在协同控制O3和PM2.5。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Resources Conservation and Recycling 环境科学-工程：环境

CiteScore

22.90

自引率

6.10%

发文量

625

审稿时长

23 days

期刊介绍： The journal Resources, Conservation & Recycling welcomes contributions from research, which consider sustainable management and conservation of resources. The journal prioritizes understanding the transformation processes crucial for transitioning toward more sustainable production and consumption systems. It highlights technological, economic, institutional, and policy aspects related to specific resource management practices such as conservation, recycling, and resource substitution, as well as broader strategies like improving resource productivity and restructuring production and consumption patterns. Contributions may address regional, national, or international scales and can range from individual resources or technologies to entire sectors or systems. Authors are encouraged to explore scientific and methodological issues alongside practical, environmental, and economic implications. However, manuscripts focusing solely on laboratory experiments without discussing their broader implications will not be considered for publication in the journal.