Technical Note: Estimating Aerosol Effects on Cloud Radiative Forcing

TitleTechnical Note: Estimating Aerosol Effects on Cloud Radiative Forcing
Publication TypeJournal Article
Year of Publication2013
JournalAtmospheric Chemistry and Physics
Pages9971-9974
Abstract / Summary

Estimating anthropogenic aerosol effects on the planetary energy balance through the aerosol influence on clouds using the difference in cloud radiative forcing from simulations with and without anthropogenic emissions produces estimates that are positively biased. A more representative method is suggested using the difference in cloud radiative forcing calculated as a diagnostic with aerosol scattering and absorption neglected. The method also yields an aerosol radiative forcing decomposition that includes a term quantifying the impact of changes in surface albedo. The method requires only two additional diagnostic calculations: the whole-sky and clear-sky top-of-atmosphere radiative flux with aerosol scattering and absorption neglected.

DOI10.5194/acp-13-9971-2013
Journal: Atmospheric Chemistry and Physics
Year of Publication: 2013
Pages: 9971-9974
Publication Date: 10/2013

Estimating anthropogenic aerosol effects on the planetary energy balance through the aerosol influence on clouds using the difference in cloud radiative forcing from simulations with and without anthropogenic emissions produces estimates that are positively biased. A more representative method is suggested using the difference in cloud radiative forcing calculated as a diagnostic with aerosol scattering and absorption neglected. The method also yields an aerosol radiative forcing decomposition that includes a term quantifying the impact of changes in surface albedo. The method requires only two additional diagnostic calculations: the whole-sky and clear-sky top-of-atmosphere radiative flux with aerosol scattering and absorption neglected.

DOI: 10.5194/acp-13-9971-2013
Citation:
Ghan, SJ.  2013.  "Technical Note: Estimating Aerosol Effects on Cloud Radiative Forcing."  Atmospheric Chemistry and Physics 9971-9974.  https://doi.org/10.5194/acp-13-9971-2013.