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Keywords = AerChemMIP

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6 pages, 10577 KiB  
Proceeding Paper
Estimating the Effective Radiative Forcing of Anthropogenic Aerosols with the Use of CMIP6 Earth System Models
by Alkiviadis Kalisoras, Aristeidis K. Georgoulias, Dimitris Akritidis, Robert J. Allen, Vaishali Naik and Prodromos Zanis
Environ. Sci. Proc. 2023, 26(1), 40; https://doi.org/10.3390/environsciproc2023026040 - 24 Aug 2023
Viewed by 1107
Abstract
We investigate the effective radiative forcing (ERF) of anthropogenic aerosols using simulations from seven Earth System Models participating in the Coupled Model Intercomparison Project Phase 6 (CMIP6). The ERF of individual aerosol species (black carbon, organic carbon, sulphates) is quantified along with the [...] Read more.
We investigate the effective radiative forcing (ERF) of anthropogenic aerosols using simulations from seven Earth System Models participating in the Coupled Model Intercomparison Project Phase 6 (CMIP6). The ERF of individual aerosol species (black carbon, organic carbon, sulphates) is quantified along with the all-aerosol ERF and decomposed into its aerosol–radiation interactions (ARI), aerosol–cloud interactions (ACI) and surface albedo (ALB) components, using the method proposed by Ghan in 2013. We find that the total anthropogenic aerosol ERF at the top of the atmosphere (TOA) is negative, mainly due to aerosol–cloud interactions. Sulphates exhibit a strongly negative ERF especially over industrialized regions of the Northern Hemisphere, such as Europe, North America, East and South Asia, while black carbon exerts a positive ERF predominantly over East and South Asia. Full article
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14 pages, 4558 KiB  
Article
The Impacts of Aerosol Emissions on Historical Climate in UKESM1
by Jeongbyn Seo, Sungbo Shim, Sang-Hoon Kwon, Kyung-On Boo, Yeon-Hee Kim, Fiona O’Connor, Ben Johnson, Mohit Dalvi, Gerd Folberth, Joao Teixeira, Jane Mulcahy, Catherine Hardacre, Steven Turnock, Stephanie Woodward, Luke Abraham, James Keeble, Paul Griffiths, Alex Archibald, Mark Richardson, Chris Dearden, Ken Carslaw, Jonny Williams, Guang Zeng and Olaf Morgensternadd Show full author list remove Hide full author list
Atmosphere 2020, 11(10), 1095; https://doi.org/10.3390/atmos11101095 - 14 Oct 2020
Cited by 7 | Viewed by 5036
Abstract
As one of the main drivers for climate change, it is important to understand changes in anthropogenic aerosol emissions and evaluate the climate impact. Anthropogenic aerosols have affected global climate while exerting a much larger influence on regional climate by their short lifetime [...] Read more.
As one of the main drivers for climate change, it is important to understand changes in anthropogenic aerosol emissions and evaluate the climate impact. Anthropogenic aerosols have affected global climate while exerting a much larger influence on regional climate by their short lifetime and heterogeneous spatial distribution. In this study, the effective radiative forcing (ERF), which has been accepted as a useful index for quantifying the effect of climate forcing, was evaluated to understand the effects of aerosol on regional climate over a historical period (1850–2014). Eastern United States (EUS), Western European Union (WEU), and Eastern Central China (ECC), are regions that predominantly emit anthropogenic aerosols and were analyzed using Coupled Model Intercomparison Project 6 (CMIP6) simulations implemented within the framework of the Aerosol Chemistry Model Intercomparison Project (AerChemMIP) in the UK’s Earth System Model (UKESM1). In EUS and WEU, where industrialization occurred relatively earlier, the negative ERF seems to have been recovering in recent decades based on the decreasing trend of aerosol emissions. Conversely, the radiative cooling in ECC seems to be strengthened as aerosol emission continuously increases. These aerosol ERFs have been largely attributed to atmospheric rapid adjustments, driven mainly by aerosol-cloud interactions rather than direct effects of aerosol such as scattering and absorption. Full article
(This article belongs to the Special Issue Aerosol-Climate Interaction)
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