CaltechAUTHORS
  A Caltech Library Service

Local production, downward and regional transport aggravated surface ozone pollution during the historical orange-alert large-scale ozone episode in eastern China

Zhang, Yibo and Yu, Shaocai and Chen, Xue and Li, Zhen and Li, Mengying and Song, Zhe and Liu, Weiping and Liu, Pengfei and Zhang, Xiaoye and Lichtfouse, Eric and Rosenfeld, Daniel (2022) Local production, downward and regional transport aggravated surface ozone pollution during the historical orange-alert large-scale ozone episode in eastern China. Environmental Chemistry Letters, 20 (3). pp. 1577-1588. ISSN 1610-3653. doi:10.1007/s10311-022-01421-0. https://resolver.caltech.edu/CaltechAUTHORS:20220429-964689400

[img] MS Word - Supplemental Material
See Usage Policy.

10MB

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20220429-964689400

Abstract

Increasing severe and persistent ozone pollution in China has resulted in serious harm to human health in recent years, yet the precise pollution sources are poorly known because there is few knowledge on large-scale extreme ozone episodes. Here, we studied the formation of the historical orange-alert regional ozone episode in eastern China on 6 June, 2021, by combining process analysis, integrated source apportionment modelling, and chemical and meteorological data. Results show that during the pollution episode, 94% of cities in eastern China suffered ozone pollution, and 39% had daily maximum 8-h average ozone concentrations higher than 100 ppb. This is explained by favorable local ozone formation and transports provided by the prevailing northwestern winds in the upper air, and by sinking atmospheric motions favoring the persistence of high surface ozone concentrations. During daytime, local photochemical production induced an ozone increase of 0.3–28.4 ppb h⁻¹ and vertical transport induced an ozone increase of 0.4–56.1 ppb h⁻¹. As a consequence, vertical downward transport of ozone generated in the upper air by photochemical reactions aggravated surface ozone pollution. Surface ozone concentrations include 25.8–53.9% of ozone from local provincial emissions, 0–42.6% of ozone from inter-regional transports from neighboring regions, 4.6–23.1% of ozone from outer-regional transport, and 13.6–52.9% of ozone from boundary conditions in the selected cities. Overall, our findings show that favorable meteorological conditions promoted the chemical productions of ozone on the surface and at high altitudes, thus resulting in this heavy ozone pollution. In addition, regional and vertical downward transports of aloft ozone further aggravated the surface ozone pollution, leading to the large-scale extreme ozone pollution episode.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1007/s10311-022-01421-0DOIArticle
https://rdcu.be/cMoSsPublisherFree ReadCube access
ORCID:
AuthorORCID
Yu, Shaocai0000-0001-9718-8246
Liu, Pengfei0000-0002-6714-7387
Lichtfouse, Eric0000-0002-8535-8073
Rosenfeld, Daniel0000-0002-0784-7656
Additional Information:© The Author(s), under exclusive licence to Springer Nature Switzerland AG 2022. Received 01 December 2021; Accepted 22 February 2022; Published 04 April 2022. This work was partially supported by National Natural Science Foundation of China (No. 42175084, 21577126, and 41561144004), the Department of Science and Technology of China (No. 2018YFC0213506, 2018YFC0213503, and 2016YFC0202702) and National Research Program for Key Issues in Air Pollution Control in China (No. DQGG0107). Part of this work was also supported by the “Zhejiang 1000 Talent Plan” and Research Center for Air Pollution and Health in Zhejiang University. Pengfei Li is supported by National Natural Science Foundation of China (no. 22006030), Initiation Fund for Introducing Talents of Hebei Agricultural University (412201904), and Hebei Youth Top Q15 Fund (BJ2020032).
Funders:
Funding AgencyGrant Number
National Natural Science Foundation of China42175084
National Natural Science Foundation of China21577126
National Natural Science Foundation of China41561144004
Department of Science and Technology (China)2018YFC0213506
Department of Science and Technology (China)2018YFC0213503
Department of Science and Technology (China)2016YFC0202702
National Research Program for Key Issues in Air Pollution Control in ChinaDQGG0107
Zhejiang 1000 Talent PlanUNSPECIFIED
Zhejiang UniversityUNSPECIFIED
National Natural Science Foundation of China22006030
Hebei Agricultural University412201904
Hebei Youth Top FundBJ2020032
Subject Keywords:Ozone pollution; Meteorological conditions; Process analysis; Photochemical production; Vertical transport; Source contributions
Issue or Number:3
DOI:10.1007/s10311-022-01421-0
Record Number:CaltechAUTHORS:20220429-964689400
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20220429-964689400
Official Citation:Zhang, Y., Yu, S., Chen, X. et al. Local production, downward and regional transport aggravated surface ozone pollution during the historical orange-alert large-scale ozone episode in eastern China. Environ Chem Lett 20, 1577–1588 (2022). https://doi.org/10.1007/s10311-022-01421-0
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:114528
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:29 Apr 2022 19:51
Last Modified:31 May 2022 16:05

Repository Staff Only: item control page