Detailed Record


Buffering of Aerosol‐Cloud Adjustments by Coupling Between Radiative Susceptibility and Precipitation Efficiency


Abstract Aerosol‐cloud interactions (ACI) in warm clouds are the primary source of uncertainty in effective radiative forcing (ERF) during the historical period and, by extension, inferred climate sensitivity. The ERF due to ACI (ERFaci) is composed of the radiative forcing due to changes in cloud microphysics and cloud adjustments to microphysics. Here, we examine the processes that drive ERFaci using a perturbed parameter ensemble (PPE) hosted in CAM6. Observational constraints on the PPE result in substantial constraints in the response of cloud microphysics and macrophysics to anthropogenic aerosol, but only minimal constraint on ERFaci. Examination of cloud and radiation processes in the PPE reveal buffering of ERFaci by the interaction of precipitation efficiency and radiative susceptibility.
Authors Chul H. Song University of WyomingORCID , Daniel McCoy University of WyomingORCID , Trude Eidhammer ORCID , Andrew Gettelman ORCID , Isabel L. McCoy ORCID , Duncan Watson‐Parris ORCID , Casey J. Wall ORCID , Gregory S. Elsaesser ORCID , Robert Wood ORCID
Journal Info American Geophysical Union | Geophysical Research Letters , vol: 51 , iss: 11
Publication Date 6/6/2024
ISSN 0094-8276
TypeKeyword Image article
Open Access hybrid Hybrid Access
DOI https://doi.org/10.1029/2024gl108663
KeywordsKeyword Image Aerosol Formation (Score: 0.540611)