Yu, X., Zhang, H. orcid.org/0000-0003-0365-1784, Xie, B. et al. (1 more author) (2023) Amplified Interhemispheric Rainfall Contrast in Boreal Summer Due To Reduction in Anthropogenic Emissions Under COVID‐MIP Green Economic‐Recovery Scenarios. Earth's Future, 11 (11). ARTN e2023EF003743. ISSN 2328-4277
Abstract
Our study looks at the precipitation responses to two possible future emission-mitigation pathways, pushed by the Coronavirus Disease 2019 pandemic (COVID-19) and achieving carbon neutrality in the mid-21st century. We find that a simultaneous-reduction in well-mixed greenhouse gases (WMGHGs) and anthropogenic aerosol emissions results in an enhanced interhemispheric precipitation contrast in the 2040s by amplifying the interhemispheric thermal contrast and strengthening the meridional overturning circulation in the tropics. Reduced aerosol emissions induce generally-increased precipitation in the Northern Hemisphere (NH) and an amplified intertropical rainfall contrast, while reduced WMGHG emissions dominate decrease in precipitation in the areas away from aerosol emission sources. Further, the above precipitation contrast will be enhanced under stronger emission-mitigation pathways, mainly attributed to larger precipitation increases in the NH caused by reduced aerosols. More aggressive WMGHGs mitigation policies are necessary to counteract the aerosol-induced warming in the NH, thereby mitigating the risk of regional drying or wetting due to the asymmetry in interhemispheric energy budgets.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2023 The Authors. Earth's Future published by Wiley Periodicals LLC on behalf of American Geophysical Union.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Inst for Climate & Atmos Science (ICAS) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 20 Feb 2024 16:00 |
Last Modified: | 20 Feb 2024 16:00 |
Published Version: | http://dx.doi.org/10.1029/2023ef003743 |
Status: | Published |
Publisher: | American Geophysical Union (AGU) |
Identification Number: | 10.1029/2023ef003743 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:207060 |
Download
Licence: CC-BY-NC-ND 4.0