A195
Boundary Layer Clouds and Climate Change I

Tuesday, 15 December 2020: 10:00-11:00
Virtual
Primary Convener:  Michael S Diamond, University of Washington, Atmospheric Sciences, Seattle, WA, United States
Conveners:  Jan Kazil, University of Colorado at Boulder, Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States, Armin Sorooshian, University of Arizona, Department of Chemical and Environmental Engineering, Tucson, AZ, United States and Matthew Christensen, University of Oxford, Oxford, United Kingdom
Primary Liaison:  Jan Kazil, University of Colorado at Boulder, Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States
Chairs:  Hailong Wang, Pacific Northwest National Laboratory, Richland, WA, United States, David Painemal, Science Systems and Applications, Inc. Hampton, Hampton, VA, United States, Sarah J Doherty, Univ Wash--CICOES, Seattle, WA, United States and Michael S Diamond, University of Washington, Atmospheric Sciences, Seattle, WA, United States
OSPA Liaison:  Hailong Wang, Pacific Northwest National Laboratory, Richland, WA, United States
10:00
The Influence of Cities on Boundary-Layer Clouds (Invited) (670291)
Natalie Theeuwes, University of Reading, Department of Meteorology, Reading, United Kingdom; Royal Netherlands Meteorological Institute, De Bilt, Netherlands
10:04
Boundary Layer Cloud Controlling Factors in the Midlatitudes: Southern versus Northern Ocean Clouds (Invited) (665856)
Catherine M Naud, Columbia University in the City of New York, Palisades, NY, United States, James F Booth, CUNY-City College, New York, United States, Alain Protat, Bureau of Meteorology, Melbourne, Australia, Katia Lamer, Brookhaven National Laboratory, Brookhaven, NY, United States, Roger Marchand, University of Washington, Department of Atmospheric Sciences, Seattle, WA, United States and Greg M McFarquhar, Cooperative Institute for Mesoscale Meteorological Studies, University of Oklahoma, Norman, OK, United States
10:08
Polluted cloud tracks across spatial and temporal scales (Invited) (661552)
Velle Toll1, Nicolas Bellouin2, Matthew Christensen3, Johannes Quaas4, Heido Trofimov1, Jorma Rahu1 and Michael S Diamond5, (1)University of Tartu, Tartu, Estonia, (2)University of Reading, Department of Meteorology, Reading, United Kingdom, (3)University of Oxford, Oxford, United Kingdom, (4)University of Leipzig, Leipzig Institute for Meteorology, Leipzig, Germany, (5)University of Washington, Atmospheric Sciences, Seattle, WA, United States
10:12
Short ship-track lifetimes explain limited liquid-water path responses (Invited) (661874)
Franziska Glassmeier, Delft University of Technology, Delft, Netherlands, Fabian Hoffmann, CIRES, Boulder, CO, United States, Jill S Johnson, University of Leeds, Institute for Climate and Atmospheric Science, School of Earth and Environment, Leeds, United Kingdom, Takanobu Yamaguchi, NOAA ESRL Chemical Sciences Laboratory / CIRES University of Colorado Boulder, Boulder, CO, United States, Ken S Carslaw, University of Leeds, Leeds, United Kingdom and Graham Feingold, NOAA ESRL CSL, Boulder, CO, United States
10:16
Measuring cloud process timescales using isolated aerosol perturbations (747013)
Edward Gryspeerdt, Imperial College London, Space and Atmospheric Physics Group, London, SW7, United Kingdom, Tom Goren, University of Leipzig, Leipzig, Germany and Tristan Smith, University College London, UCL Energy Institute, London, United Kingdom
10:20
Biomass Burning Aerosols from the African Continent Cause Microphysical Changes in Transition Cumulus Clouds in the South Atlantic which are Modulated by Thermodynamic Differences between Oceanic and Continental Airmasses (726109)
Paul A. Barrett1, Ian Crawford2, Jianhao Zhang3, Anthony Crawford Jones4, Hamish Gordon5, Steven Abel1 and Paquita Zuidema6, (1)Met Office Hadley center for Climate Change, Exeter, United Kingdom, (2)University of Manchester, Manchester, United Kingdom, (3)University of Miami, RSMAS, Miami, FL, United States, (4)University of Exeter, Exeter, EX4, United Kingdom, (5)College of Engineering, Carnegie Mellon University, Pittsburgh, PA, United States, (6)University of Miami, Miami, FL, United States
10:24
A Simple Model to Estimate the Extent and Radiative Effect of Stratocumulus Decks Under a Cleaner Atmosphere (750450)
Tom Goren, NOAA/CIRES, Boulder, CO, United States; University of Leipzig, Leipzig, Germany, Graham Feingold, NOAA ESRL CSL, Boulder, CO, United States, Edward Gryspeerdt, Imperial College London, Space and Atmospheric Physics Group, London, SW7, United Kingdom and Johannes Quaas, University of Leipzig, Leipzig Institute for Meteorology, Leipzig, Germany
10:28
Exploring the relationship between boundary layer clouds and hydrologic sensitivity (767447)
Jacob Hendrickson, University of California Irvine, Department of Earth System Science, Irvine, CA, United States, Mike S Pritchard, University California Irvine, Department of Earth System Science, Irvine, CA, United States and Christopher Terai, Lawrence Livermore National Laboratory, Livermore, CA, United States
10:32
Discussion
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