A54F:
Reducing Uncertainty in Aerosol Effects on Climate II

Submit an Abstract to this Session



Session ID#: 33105

Session Description:
Large uncertainty in the radiative forcing of anthropogenic aerosols has persisted through all IPCC assessment reports since 1995 despite significant developments in model complexity, increases in global observations and advances in our knowledge of aerosol processes. This session invites submissions that address the causes of uncertainty and methodologies to reduce the uncertainty through process-based model evaluation and constraint of model simulations using observations of aerosols, clouds and radiation. With an emphasis of AGU 2017 on data and emerging technologies, we particularly welcome studies that demonstrate novel ways of integrating model and observation data to narrow the uncertainty in model simulations. The session will include advances in our understanding of global-scale forcing as well as studies of smaller-scale phenomena where the implications for reducing uncertainty in regional and global-scale forcing are demonstrated.
Primary Convener:  Ken S Carslaw, University of Leeds, Leeds, United Kingdom
Conveners:  Steven John Ghan, Pacific Northwest National Laboratory, Richland, United States and Matthew Christensen, Rutherford Appleton Laboratory, Didcot, OX11, United Kingdom
Chairs:  Ken S Carslaw, University of Leeds, Leeds, United Kingdom and Matthew Christensen, Rutherford Appleton Laboratory, Didcot, OX11, United Kingdom
OSPA Liaison:  Ken S Carslaw, University of Leeds, Leeds, United Kingdom
Index Terms:

0305 Aerosols and particles [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0320 Cloud physics and chemistry [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0365 Troposphere: composition and chemistry [ATMOSPHERIC COMPOSITION AND STRUCTURE]
3305 Climate change and variability [ATMOSPHERIC PROCESSES]

Abstracts Submitted to this Session:

The Climate Response to Explosive Volcanism in the Last Millennium Reanalysis (285171)
Julien Emile-Geay, University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States, Michael P Erb, University of Southern California, Los Angeles, CA, United States, Gregory J. Hakim, University of Washington, Atmospheric Sciences, Seattle, United States, Kevin J. Anchukaitis, University of Arizona, Laboratory of Tree-Ring Research, Tucson, AZ, United States, Matthew Toohey, GEOMAR, Kiel, Germany and Eric J. Steig, University of Washington, Seattle, United States
Strong constraints on aerosol–cloud interactions from volcanic eruptions (214139)
James Matthew Haywood1, Florent Malavelle1, Andy Jones2, Andrew Gettelman3, Lieven Clarisse4, inger Helene Karset5, Sophie Bauduin6, Richard P Allan7, Jon Egill Kristjansson8, Lazaros Oreopoulos9, Nayeong Cho10, Dongmin Lee11, Nicolas Bellouin12, Olivier Boucher13, Daniel Peter Grosvenor14, Ken S Carslaw14, Sandip Dhomse15, Graham W Mann16, Anja Schmidt17, Hugh Coe18, Margaret E Hartley19, M Dalvi20, Adrian A Hill21, Ben Thomas Johnson20, Colin Johnson2, Jeff R Knight22, Fiona M O'Connor22, Daniel Partridge1, Philip Stier23, Gunnar Myhre24, Steven E Platnick25, Hanii Takahashi26, Graeme L Stephens27 and Thor Thordarson28, (1)University of Exeter, Exeter, United Kingdom, (2)Met Office Hadley Centre for Climate Science and Services, Exeter, United Kingdom, (3)Pacific Northwest National Laboratory, Richland, WA, United States, (4)Université libre de Bruxelles (ULB), Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing (SQUARES), Brussels, Belgium, (5)University of Oslo, Department of Geosciences, Oslo, Norway, (6)Université Libre de Bruxelles, Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing, Brussel, Belgium, (7)University of Reading, Reading, United Kingdom, (8)University of Oslo, Oslo, Norway, (9)NASA GSFC, Greenbelt, United States, (10)NASA Goddard Flight Center, Greenbelt, MD, United States, (11)Morgan State University, Baltimore, MD, United States, (12)University of Reading, Department of Meteorology, Reading, United Kingdom, (13)Institut Pierre Simon Laplace, Paris, France, (14)University of Leeds, Leeds, United Kingdom, (15)University of Leeds, School of Earth and Environment, Leeds, United Kingdom, (16)University of Leeds, Leeds, LS2, United Kingdom, (17)University of Cambridge, Department of Chemistry, Cambridge, United Kingdom, (18)University of Manchester, Department of Earth and Environmental Sciences, Manchester, United Kingdom, (19)University of Manchester, Manchester, United Kingdom, (20)Met Office, Exeter, United Kingdom, (21)United Kingdom Met Office, Exeter, United Kingdom, (22)Met Office Hadley Centre, Exeter, United Kingdom, (23)University of Oxford, Department of Physics, Oxford, United Kingdom, (24)CICERO Center for International Climate Research, Oslo, Norway, (25)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (26)Jet Propulsion Lab, Pasadena, CA, United States, (27)Jet Propulsion Laboratory, Pasadena, United States, (28)University of Iceland, Faculty of Earth Sciences, Reykjavik, Iceland
Investigating the influence of volcanic sulfate aerosol on cloud properties Along A-Train tracks (264890)
Gerald G Mace, University of Utah, Salt Lake City, UT, United States
How accurately can the instantaneous aerosol effect on cloud albedo be constrained? (Invited) (218804)
Edward Gryspeerdt1, Johannes Quaas2, Sylvaine Ferrachat3, Andrew Gettelman4, Steven John Ghan5, Ulrike Lohmann6, David Neubauer7, Hugh Morrison8, Dan Partridge9, Philip Stier10, Toshihiko Takemura11, Hailong Wang5, Minghuai Wang12 and Kai Zhang4, (1)Imperial College London, Physics, London, United Kingdom, (2)University Leipzig, Leipzig Institute for Meteorology, Leipzig, Germany, (3)ETH Swiss Federal Institute of Technology Zurich, Institute for Atmospheric and Climate Science, Zurich, Switzerland, (4)Pacific Northwest National Laboratory, Richland, WA, United States, (5)Pacific Northwest National Laboratory, Richland, United States, (6)ETH Zurich, Institute for Atmospheric and Climate Science, Zurich, Switzerland, (7)ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland, (8)NSF NCAR, MMM Laboratory, Boulder, United States, (9)University of Exeter, Department of Mathematics, Exeter, United Kingdom, (10)University of Oxford, Department of Physics, Oxford, United Kingdom, (11)Kyushu University, Research Institute for Applied Mechanics, Fukuoka, Japan, (12)Nanjing University, Nanjing, China
Confronting the Uncertainty in Aerosol Forcing Using Comprehensive Observational Data (228761)
Jill S Johnson1, Leighton Anunda Regayre2, Masaru Yoshioka2, Kirsty Pringle2, David Sexton3, Lindsay Lee4 and Ken S Carslaw2, (1)University of Leeds, Institute for Climate and Atmospheric Science, Leeds, United Kingdom, (2)University of Leeds, Leeds, United Kingdom, (3)Met Office, Hadley Centre for Climate Science and Services, Exeter, United Kingdom, (4)University of Leeds, Leeds, LS2, United Kingdom
Rain frequency and its susceptibility to aerosols for marine stratocumulus in satellite observations and climate models (277707)
Minghuai Wang1, Zhoukun Liu1, Heming Bai1, Shipeng Zhang2 and Xin Huang3, (1)Nanjing University, Nanjing, China, (2)NUIST Nanjing University of Information Science and Technology, Nanjing, China, (3)Nanjing University, School of Atmospheric Sciences, Nanjing, China
Simulating the Effects of Semivolatile Compounds on Cloud Processing of Aerosol (206823)
Harri Kokkola1, Innocent Kudzotsa2, Juha Tonttila2, Tomi Raatikainen3 and Sami Romakkaniemi2, (1)Finnish Meteorological Institute, Atmospheric Research Centre of Eastern Finland, Helsinki, Finland, (2)Finnish Meteorological Institute, Atmospheric Research Centre of Eastern Finland, Kuopio, Finland, (3)Finnish Meteorological Institute, Helsinki, Finland
Quantifying the sensitivity of cloud-aerosol interactions to model representation of the aerosol mixing state (294496)
Laura Fierce, Brookhaven National Laboratory, Environmental & Climate Sciences, Upton, NY, United States, Delina Levine, Brookhaven National Laboratory High School Research Program, Upton, NY, United States and Robert L McGraw, Brookhaven National Laboratory, Upton, United States

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