Japanese Journal of JSCE
Online ISSN : 2436-6021
Special Issue (Global Environment Engineering)Paper
STUDY ON THE CLIMATE, HEALTH, AND AGRICULTURAL IMPACTS OF GLOBAL NOx EMISSION REDUCTIONS
Koga YAMAZAKIShinichiro FUJIMORIKen OSHIROAkio UETANISatoshi SEKIZAWA
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2023 Volume 79 Issue 27 Article ID: 23-27011

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Abstract

 It has been pointed out that NOx emissions contribute to the formation of ozone, which has various environmental and social effects, and reduces greenhouse gases such as methane by increasing the oxidation potential of the atmosphere. However, very few studies have comprehensively evaluated these effects. In this study, we estimated the changes in thermal radiation, health effects of ozone, and agricultural effects when NOx emissions are reduced in a sensitivity analysis manner. The results showed that reducing all anthropogenic NOx emissions increased global average methane concentrations by 250 ppbv, radiation increased by 8.3%, and both mortality and yield loss decreased significantly. These results indicate that while NOx emission reductions are effective in solving air pollution issues, they also increase methane concentrations and slightly accelerate global warming, indicating the need for further greenhouse gas emission reductions to simultaneously solve air pollution and climate change issues.

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© 2023 Japan Society of Civil Engineers
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