Lower air pollution during COVID-19 lock-down: improving models and methods estimating ozone impacts on crops

doi:10.1098/rsta.2020.0188

	Lower air pollution during COVID-19 lock-down: improving models and methods estimating ozone impacts on crops
	Dentener, Frank 1; Galmarini, Stefano 1; van den Berg, Maurits 1; Van Dingenen, Rita 1; Emberson, Lisa 2; Cappelli, Giovanni 3; Irimescu, Anisoara 4; Mihailescu, Denis 4
	2020-10
发表期刊	PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
ISSN	1364-503X
EISSN	1471-2962
摘要	We suggest that the unprecedented and unintended decrease of emissions of air pollutants during the COVID-19 lock-down in 2020 could lead to declining seasonal ozone concentrations and positive impacts on crop yields. An initial assessment of the potential effects of COVID-19 emission reductions was made using a set of six scenarios that variously assumed annual European and global emission reductions of 30% and 50% for the energy, industry, road transport and international shipping sectors, and 80% for the aviation sector. The greatest ozone reductions during the growing season reached up to 12 ppb over crop growing regions in Asia and up to 6ppb in North America and Europe for the 50% global reduction scenario. In Europe, ozone responses are more sensitive to emission declines in other continents, international shipping and aviation than to emissions changes within Europe. We demonstrate that for wheat the overall magnitude of ozone precursor emission changes could lead to yield improvements between 2% and 8%. The expected magnitude of ozone precursor emission reductions during the Northern Hemisphere growing season in 2020 presents an opportunity to test and improve crop models and experimentally based exposure response relationships of ozone impacts on crops, under real-world conditions. This article is part of a discussion meeting issue 'Air quality, past present and future'.
关键词	emission reduction air pollution ozone COVID crop production wheat
DOI	10.1098/rsta.2020.0188
WOS关键词	CLIMATE ; QUALITY
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
出版者	ROYAL SOC
引用统计
文献类型	期刊论文
专题	新冠肺炎循证社会科学证据集成
作者单位	1.European Commiss; 2.Univ York; 3.Council Agr Res & Econ; 4.Natl Meteorol Adm
推荐引用方式 GB/T 7714	Dentener, Frank,Galmarini, Stefano,van den Berg, Maurits,et al. Lower air pollution during COVID-19 lock-down: improving models and methods estimating ozone impacts on crops[J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES,2020.
APA	Dentener, Frank.,Galmarini, Stefano.,van den Berg, Maurits.,Van Dingenen, Rita.,Emberson, Lisa.,...&Mihailescu, Denis.(2020).Lower air pollution during COVID-19 lock-down: improving models and methods estimating ozone impacts on crops.PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES.
MLA	Dentener, Frank,et al."Lower air pollution during COVID-19 lock-down: improving models and methods estimating ozone impacts on crops".PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES (2020).