A11B:
Aerosol, Cloud, Precipitation, and Radiation Studies over the Southern Ocean I


Submit an Abstract to this Session


Session ID#: 58055

Session Description:
Motivated by a lack of in situ observational data, large biases in the simulation of radiation budgets over the Southern Ocean in climate models, and knowledge that natural pre-industrial aerosols are a major source of uncertainty in understanding aerosol radiative forcing, several recent observational campaigns have been conducted over the Southern Ocean. The Southern Ocean is a natural laboratory for examining cloud-aerosol-precipitation-radiation interactions for liquid and ice clouds, and the role of primary and secondary marine biogenic aerosols and sea-salt in these interactions. This session solicits contributions that describe recent ship-, island- or airborne field campaigns on Southern Ocean clouds, aerosols, precipitation, and radiation, that use data from such campaigns or satellite remote sensing to advance understanding of these quantities and interactions between them, or that use models with a variety of spatial and temporal scales.
Primary Convener:  Greg M McFarquhar, Cooperative Institute for Severe and High-Impact Weather Research and Operations, University of Oklahoma, Norman, United States
Conveners:  Roger Marchand, University of Washington, Department of Atmospheric Sciences, Seattle, United States, Tom Lachlan-Cope, NERC British Antarctic Survey, Cambridge, United Kingdom and Alexis Berne, EPFL, Swiss Federal Institute of Technology Lausanne, Lausanne, Switzerland
Primary Liaison:  Greg M McFarquhar, Cooperative Institute for Severe and High-Impact Weather Research and Operations, University of Oklahoma, Norman, United States
Chairs:  Roger Marchand, University of Washington, Department of Atmospheric Sciences, Seattle, United States, Tom Lachlan-Cope, NERC British Antarctic Survey, Cambridge, United Kingdom and Alexis Berne, EPFL, Swiss Federal Institute of Technology Lausanne, Lausanne, Switzerland
OSPA Liaison:  Greg M McFarquhar, Cooperative Institute for Severe and High-Impact Weather Research and Operations, University of Oklahoma, Norman, United States
Index Terms:

0305 Aerosols and particles [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0320 Cloud physics and chemistry [ATMOSPHERIC COMPOSITION AND STRUCTURE]
3310 Clouds and cloud feedbacks [ATMOSPHERIC PROCESSES]
3349 Polar meteorology [ATMOSPHERIC PROCESSES]

Abstracts Submitted to this Session:

Overview of the Antarctic Circumnavigation Expedition: Study of Preindustrial-like Aerosols and Their Climate Effects (ACE-SPACE) (Invited) (346035)
Julia Schmale1, Andrea Baccarini2, Iris Thurnherr3, Silvia Henning4, Avichay Efraim5, Leighton Anunda Regayre6, Conor Bolas7, Katrianne Lehtipalo8, Franziska Aemisegger9, Neil Harris10, Frank Stratmann4, Josef Dommen11, Urs Baltensperger1, Martin Gysel11, Daniel Rosenfeld12, Heini Wernli13 and Ken S Carslaw6, (1)Paul Scherrer Institute, Villingen, Switzerland, (2)Paul Scherrer Institute, Villigen, Switzerland, (3)ETH, Institute of Atmospheric and Climate Science, Zurich, Switzerland, (4)Leibniz Institute for Tropospheric Research, Leipzig, Germany, (5)The Hebrew Univeristy of Jerusalem, Jerusalem, Israel, (6)University of Leeds, Leeds, United Kingdom, (7)University of Cambridge, Cambridge, United Kingdom, (8)University of Helsinki, Helsinki, Finland, (9)ETH Zurich, Institute for Atmospheric and Climate Science, Zurich, Switzerland, (10)Cranfield University, Centre for Atmospheric Informatics and Emissions Technology, Cranfield, United Kingdom, (11)Paul Scherrer Institute, Laboratory of Atmospheric Chemistry, Villigen, Switzerland, (12)The Hebrew University of Jerusalem, Jerusalem, Israel, (13)ETH, Institute for Atmospheric and Climate Science, Zürich, Switzerland
Measured and Simulated Cloud Condensation Nuclei over the Southern Ocean and their Effects on Cloud Microphysical and Optical Properties (460382)
Kevin Sanchez, Universities Space Research Association Columbia, Columbia, MD, United States, Gregory C Roberts, Scripps Institution of Oceanography, La Jolla, CA, United States, Melita D Keywood, Climate Science Centre, CSIRO Oceans & Atmosphere, Aspendale, Australia and Ruhi Humphries, CSIRO Marine and Atmospheric Research, Aspendale, Australia
The annual cycle of Southern Ocean precipitation observed from satellite and ground instrumentation at Macquarie Island (402727)
Emily Terese Tansey, Seattle, WA, United States, Roger Marchand, University of Washington, Department of Atmospheric Sciences, Seattle, United States, Alain Protat, Bureau of Meteorology, Melbourne, Australia and Simon Alexander, Australian Antarctic Division, Kingston, TAS, Australia
Satellite retrieval of CCN(S) at the base of marine boundary clouds and validations by ship borne CCN measurements over the Southern Oceans (440052)
Daniel Rosenfeld, The Hebrew University of Jerusalem, Jerusalem, Israel, Avichay Efraim, The Hebrew Univeristy of Jerusalem, Jerusalem, Israel, Yannian Zhu, Meteorological Institute of Shaanxi Province, Xi'an, China and Youtong Zheng, University of Maryland College Park, College Park, United States
The Southern Ocean Climate Studies: Observations and modeling of Southern Ocean clouds and aerosols (Invited) (384403)
Christopher Stephen Bretherton, Univ Washington, Seattle, WA, United States, Greg M McFarquhar, Cooperative Institute for Severe and High-Impact Weather Research and Operations, University of Oklahoma, Norman, United States, Roger Marchand, University of Washington, Department of Atmospheric Sciences, Seattle, United States, Alain Protat, Bureau of Meteorology, Melbourne, Australia, Simon Alexander, Australian Antarctic Division, Kingston, TAS, Australia, Andrew Gettelman, Pacific Northwest National Laboratory, Richland, WA, United States, Yi Ming, Boston College, Chestnut Hill, MA, United States and SOCS Team
Spatial and Temporal Distributions of Ice Nucleating Particles over the Southern Oceans (403218)
Paul J DeMott1, Christina S McCluskey2, Kathryn A. Moore, PhD3, Anne Marie Rauker4, Thomas Christopher James Hill1, Ezra Levin5, Cynthia H Twohy6, Prof. Darin W Toohey, PhD7, Bryan Jeremy Rainwater8, Jeffrey L Stith9, Greg M McFarquhar10, Roger Marchand11, Christopher Stephen Bretherton12, Robert Wood13, Yi Huang14, Steven Thomas Siems15, Simon Alexander16, Andrew Gettelman17, Alain Protat18, Ruhi Humphries19, Jason Ward20, Melita D Keywood20, Sonia M Kreidenweis1 and The SOCRATES and MICRE Science Teams, (1)Colorado State University, Department of Atmospheric Science, Fort Collins, United States, (2)University Corporation for Atmospheric Research, Boulder, United States, (3)Colorado State University, Atmospheric Science, Fort Collins, United States, (4)Colorado State University, Atmospheric Science, Fort Collins, CO, United States, (5)Colorado State University, Fort Collins, United States, (6)NorthWest Research Associates Boulder, Boulder, CO, United States, (7)Univ Colorado, Boulder, CO, United States, (8)University of Colorado at Boulder, Boulder, CO, United States, (9)NCAR Rsch Aviation Facility, Broomfield, CO, United States, (10)Cooperative Institute for Severe and High-Impact Weather Research and Operations, University of Oklahoma, Norman, United States, (11)University of Washington, Department of Atmospheric Sciences, Seattle, United States, (12)Allen Institute for AI, Seattle, United States, (13)University of Washington, Department of Atmospheric and Climate Science, Seattle, United States, (14)The University of Melbourne, School of Geography, Earth and Atmospheric Sciences and ARC Centre of Excellence for Climate Extremes, Melbourne, Australia, (15)Monash University, School of Earth, Atmosphere and Environment, Melbourne, VIC, Australia, (16)Australian Antarctic Division, Kingston, TAS, Australia, (17)Pacific Northwest National Laboratory, Richland, WA, United States, (18)Bureau of Meteorology, Melbourne, Australia, (19)CSIRO Marine and Atmospheric Research, Aspendale, Australia, (20)Climate Science Centre, CSIRO Oceans & Atmosphere, Aspendale, Australia
Cloud-Aerosol Interactions and Aerosol Variability Near Southern Ocean Low Clouds (387891)
Isabel McCoy1, Robert Wood2, Christopher Stephen Bretherton3, Matthew C Wyant4, Cynthia H. Twohy5, Kevin Sanchez5, Gregory C Roberts5, Prof. Darin W Toohey, PhD6, Andrew Gettelman7, Charles Bardeen8, Christina S McCluskey9, Yi Ming10 and Pu Lin11, (1)University of Washington, Atmospheric Sciences, Seattle, WA, United States, (2)University of Washington, Department of Atmospheric Sciences, Seattle, United States, (3)University of Washington Seattle Campus, Atmospheric Sciences, Seattle, WA, United States, (4)University of Washington, Seattle, WA, United States, (5)Scripps Institution of Oceanography, La Jolla, CA, United States, (6)Univ Colorado, Boulder, CO, United States, (7)National Center for Atmospheric Research, Boulder, CO, United States, (8)National Center for Atmospheric Research, Boulder, United States, (9)University Corporation for Atmospheric Research, Boulder, United States, (10)Boston College, Chestnut Hill, MA, United States, (11)NOAA/OAR/Geophysical Fluid Dynamics Laboratory, Princeton, United States
The dependence of the microphysical characteristics of supercooled liquid and mixed-phase clouds over the Southern Ocean on scale, vertical velocity and ambient humidity using in situ observations acquired during SOCRATES (458246)
Dr. John D'Alessandro, University of Oklahoma Norman Campus, Norman, United States, Greg M McFarquhar, Cooperative Institute for Severe and High-Impact Weather Research and Operations, University of Oklahoma, Norman, United States, Wei Wu, University of Oklahoma, Cooperative Institute for Mesoscale Meteorological Studies, Norman, OK, United States, Jeffrey L Stith, NCAR Rsch Aviation Facility, Broomfield, CO, United States, Minghui Diao, San Jose State University, Department of Meteorology and Climate Science, San Jose, CA, United States, Martin Schnaiter, Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research, Atmospheric Aerosol Research (IMK-AAF), Karlsruhe, Germany and Emma Järvinen, National Center for Atmospheric Research, Boulder, United States

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