1. Meteorological and aerosol effects on marine cloud microphysical properties
- Author
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Lars Ahlm, Athanasios Nenes, Kevin J. Noone, Allan K. Bertram, Greg Roberts, H. Jonsson, Desiree Toom, Anne Marie Macdonald, John H. Seinfeld, Robin L. Modini, C. E. Corrigan, Jason C. Schroder, Anna Wonaschütz, Armin Sorooshian, Lynn M. Russell, Amanda A. Frossard, W. R. Leaitch, Z. Wang, Jack J. Lin, Kevin J. Sanchez, R. Zhao, L. N. Hawkins, Alex K. Y. Lee, Scripps Institution of Oceanography (SIO), University of California [San Diego] (UC San Diego), University of California-University of California, Centre national de recherches météorologiques (CNRM), Institut national des sciences de l'Univers (INSU - CNRS)-Météo France-Centre National de la Recherche Scientifique (CNRS), Scripps Institution of Oceanography (SIO - UC San Diego), University of California (UC)-University of California (UC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), and Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)
- Subjects
Atmospheric Science ,010504 meteorology & atmospheric sciences ,Particle number ,010501 environmental sciences ,Atmospheric sciences ,complex mixtures ,01 natural sciences ,Physical Geography and Environmental Geoscience ,Atmospheric Sciences ,Earth and Planetary Sciences (miscellaneous) ,ComputingMilieux_MISCELLANEOUS ,Physics::Atmospheric and Oceanic Physics ,0105 earth and related environmental sciences ,[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere ,Microphysics ,Drop (liquid) ,Lapse rate ,Aerosol ,Climate Action ,Geophysics ,13. Climate action ,Space and Planetary Science ,Liquid water content ,[SDE]Environmental Sciences ,Environmental science ,sense organs ,Mass fraction ,Shortwave - Abstract
Meteorology and microphysics affect cloud formation, cloud droplet distributions, and shortwave reflectance. The Eastern Pacific Emitted Aerosol Cloud Experiment and the Stratocumulus Observations of Los-Angeles Emissions Derived Aerosol-Droplets studies provided measurements in six case studies of cloud thermodynamic properties, initial particle number distribution and composition, and cloud drop distribution. In this study, we use simulations from a chemical and microphysical aerosol-cloud parcel (ACP) model with explicit kinetic drop activation to reproduce observed cloud droplet distributions of the case studies. Four cases had subadiabatic lapse rates, resulting in fewer activated droplets, lower liquid water content, and higher cloud base height than an adiabatic lapse rate. A weighted ensemble of simulations that reflect measured variation in updraft velocity and cloud base height was used to reproduce observed droplet distributions. Simulations show that organic hygroscopicity in internally mixed cases causes small effects on cloud reflectivity (CR) (
- Published
- 2016
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