Ozone risk assessment for an Alpine larch forest in two vegetative seasons with different approaches: comparison of POD1 and AOT40
In: Environmental science and pollution research: ESPR, Band 24, Heft 34, S. 26238-26248
ISSN: 1614-7499
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In: Environmental science and pollution research: ESPR, Band 24, Heft 34, S. 26238-26248
ISSN: 1614-7499
In: Environmental science and pollution research: ESPR, Band 24, Heft 34, S. 26249-26258
ISSN: 1614-7499
In: Environmental science and pollution research: ESPR, Band 24, Heft 34, S. 26155-26159
ISSN: 1614-7499
In: Lin , M , Horowitz , L W , Xie , Y , Paulot , F , Malyshev , S , Shevliakova , E , Finco , A , Gerosa , G , Kubistin , D & Pilegaard , K 2020 , ' Vegetation feedbacks during drought exacerbate ozone air pollution extremes in Europe ' , Nature Climate Change , vol. 10 , pp. 444–451 . https://doi.org/10.1038/s41558-020-0743-y
Reducing surface ozone to meet the European Union's target for human health has proven challenging despite stringent controls on ozone precursor emissions over recent decades. The most extreme ozone pollution episodes are linked to heatwaves and droughts, which are increasing in frequency and intensity over Europe, with severe impacts on natural and human systems. Here, we use observations and Earth system model simulations for the period 1960–2018 to show that ecosystem–atmosphere interactions, especially reduced ozone removal by water-stressed vegetation, exacerbate ozone air pollution over Europe. These vegetation feedbacks worsen peak ozone episodes during European mega-droughts, such as the 2003 event, offsetting much of the air quality improvements gained from regional emissions controls. As the frequency of hot and dry summers is expected to increase over the coming decades, this climate penalty could be severe and therefore needs to be considered when designing clean air policy in the European Union.
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In: Environmental science and pollution research: ESPR, Band 25, Heft 9, S. 8217-8232
ISSN: 1614-7499