A model study investigating the sensitivity of aerosol forcing to the volatilities of semi-volatile organic compounds

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Abstract - 1 µ g m - 3 or higher, than the low-volatility compounds. This finding underscores the importance of having a higher resolution in the semi-volatile bins, especially in global models, to accurately capture SOA formation. Furthermore, the study highlights the importance of a better representation of saturation concentration values for volatility bins when employing a reduced number of bins in a global-scale model. A comparative analysis between a finely resolved nine-bin VBS setup and a simpler three-bin VBS setup highlights the significance of these choices. The study also indicates that radiative forcing attributed to changes in SOA over the boreal forest region is notably more sensitive to the volatility distribution of semi-volatile compounds than low-volatility compounds. In the three-bin VBS setup, a 10-fold decrease in the volatility of the highest-volatility bin results in a shortwave instantaneous radiative forcing (IRF ari - ± W m - 2 and an effective radiative forcing (ERF) of + ± W m - 2, while a 10-fold increase in volatility leads to an IRF ari + ± W m - 2 and an ERF of + ± W m - 2 over the boreal forest region. These findings underscore the critical need for a more accurate representation of semi-volatile compounds within global-scale models to effectively capture the aerosol loads and the subsequent climate effects.

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch

Bibliographic citation
A model study investigating the sensitivity of aerosol forcing to the volatilities of semi-volatile organic compounds ; volume:24 ; number:14 ; year:2024 ; pages:8489-8506 ; extent:18
Atmospheric chemistry and physics ; 24, Heft 14 (2024), 8489-8506 (gesamt 18)

Creator
Irfan, Muhammed
Kühn, Thomas
Yli-Juuti, Taina
Laakso, Anton
Holopainen, Eemeli
Worsnop, Douglas R.
Virtanen, Annele
Kokkola, Harri

DOI
10.5194/acp-24-8489-2024
URN
urn:nbn:de:101:1-2408061437119.699635267616
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
14.08.2025, 10:54 AM CEST

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Associated

  • Irfan, Muhammed
  • Kühn, Thomas
  • Yli-Juuti, Taina
  • Laakso, Anton
  • Holopainen, Eemeli
  • Worsnop, Douglas R.
  • Virtanen, Annele
  • Kokkola, Harri

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