Journal Article

FZJ-2018-07547

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Severe Surface Ozone Pollution in China: A Global Perspective

Lu, X. (Corresponding author) ; Hong, J. ; Zhang, L. ; Cooper, O. R. ; Schultz, M.FZJ* ; Xu, X. ; Wang, T. ; Gao, M. ; Zhao, Y. ; Zhang, Y.

2018
ACS Columbus, Ohio

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Please use a persistent id in citations: doi:10.1021/acs.estlett.8b00366

Abstract: The nationwide extent of surface ozone pollution in China and its comparison to the global ozone distribution have not been recognized because of the scarcity of Chinese monitoring sites before 2012. Here we address this issue by using the latest 5 year (2013-2017) surface ozone measurements from the Chinese monitoring network, combined with the recent Tropospheric Ozone Assessment Report (TOAR) database for other industrialized regions such as Japan, South Korea, Europe, and the United States (JKEU). We use various human health and vegetation exposure metrics. We find that although the median ozone values are comparable between Chinese and JKEU cities, the magnitude and frequency of high-ozone events are much larger in China. The national warm-season (April September) fourth highest daily maximum 8 h average (4MDA8) ozone level (86.0 ppb) and the number of days with MDA8 values of >70 ppb (NDGT70, 29.7 days) in China are 6.3-30% (range of regional mean differences) and 93-575% higher, respectively, than the JKEU regional averages. Health exposure metrics such as warm-season mean MDA8 and annual SOMO35 (sum of ozone means over 35 ppb) are 6.3-16 and 25-95% higher in China, respectively. We also find an increase in the surface ozone level over China in 2016 and 2017 relative to 2013 and 2014. Our results show that on the regional scale the exposure of humans and vegetation to ozone is greater in China than in other developed regions of the world with comprehensive ozone monitoring.

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Contributing Institute(s):

1. Jülich Supercomputing Center (JSC)

Research Program(s):

1. 512 - Data-Intensive Science and Federated Computing (POF3-512) (POF3-512)
2. Earth System Data Exploration (ESDE) (ESDE)

Appears in the scientific report 2018

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Database coverage:
; BIOSIS Previews ; Clarivate Analytics Master Journal List ; Current Contents - Agriculture, Biology and Environmental Sciences ; Current Contents - Engineering, Computing and Technology ; IF >= 5 ; JCR ; Science Citation Index Expanded ; Web of Science Core Collection

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