the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Cold cloud microphysical process rates in a global chemistry–climate model
Sara Bacer
Sylvia C. Sullivan
Odran Sourdeval
Holger Tost
Jos Lelieveld
Andrea Pozzer
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Uncertainty with respect to cloud phases over the Southern Ocean and Arctic marine regions leads to large uncertainties in the radiation budget of weather and climate models. This study investigates the phases of low-base and mid-base clouds using satellite-based remote sensing data. A comprehensive analysis of the correlation of cloud phase with various parameters, such as temperature, aerosols, sea ice, vertical and horizontal cloud extent, and cloud radiative effect, is presented.
sweet spotand is sensitive to fluctuations in cloud condensation nuclei concentration alone.
direct effect of dust agingas an increase in the AOD as a result of hygroscopic growth. We define the
indirect effectas a reduction in the dust AOD due to the higher removal of the aged dust particles.
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Whether increased aerosol increases or decreases liquid cloud mass has been a longstanding question. Observed correlations suggest that aerosols thin liquid cloud, but we are able to show that observations were consistent with an increase in liquid cloud in response to aerosols by leveraging a model where causality could be traced.