A046
Cloud-aerosol-radiation-climate interactions in the southeast Atlantic

Session ID#: 82392

Session Description:
Interactions between absorbing aerosol over/near clouds via radiative, thermodynamic and dynamical processes, or direct microphysical interactions, impact climate. These cloud-aerosol-radiation-climate interactions are prevalent over the southeastern Atlantic, where large low cloud decks are overlaid by biomass burning aerosol, modulating the regional large-scale circulation. Absorbing aerosol above clouds attenuates shortwave radiation and can produce a direct radiative warming. The clouds are susceptible to aerosol by changes in atmospheric stability and free-tropospheric moisture, and microphysical interactions. Both the clouds and aerosol are challenging to measure and simulate at all scales, constituting a major uncertainty in understanding key processes and regional climate. Abstracts are welcomed from studies focused on observing the southeast Atlantic clouds and aerosol, including airborne, ground-based, and satellite, and exploratory studies for future satellite missions and related retrievals of joint aerosol-cloud scenes. Modeling of interactions between clouds, aerosol, radiation, precipitation, and climate over the southeastern Atlantic are also solicited.
Index Terms:

0305 Aerosols and particles [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0321 Cloud/radiation interaction [ATMOSPHERIC COMPOSITION AND STRUCTURE]
3311 Clouds and aerosols [ATMOSPHERIC PROCESSES]
3359 Radiative processes [ATMOSPHERIC PROCESSES]

Primary Convener:  Samuel E LeBlanc, NASA Ames Research Center, Moffett Field, CA, United States
Conveners:  Paquita Zuidema, University of Miami, Miami, FL, United States, Robert Wood, Univ Washington, Seattle, WA, United States and Kerry Meyer, NASA Goddard Space Flight Center, Greenbelt, MD, United States
Primary Liaison:  Samuel E LeBlanc, University of Colorado at Boulder, Boulder, CO, United States
 
EVOLUTION OF OPTICAL PROPERTIES OF BIOMASS BURN PLUMES (498569)
Ernie R Lewis, Brookhaven National Laboratory, Upton, NY, United States and Arthur J Sedlacek III, Brookhaven National Lab, Upton, NY, United States
 
Modeling of Biomass Burning Aerosols over the SE Atlantic: Distribution, Optical Properties, and their Influence on the Underlying Stratocumulus Clouds (Invited) (506232)
Sampa Das, NASA Post-doctoral Program, Universities Space Research Association, Columbia, MD, United States, Peter Richard Colarco, NASA GSFC, Greenbelt, MD, United States and Dr Harshvardhan, Purdue University, West Lafayette, IN, United States
 
Loss of Organic Carbon Along with Changes in Aerosol Optical Properties in African Biomass Burning Due to Long Range Transport Over the Southeast Atlantic Ocean. (509890)
Amie Nicole Dobracki1,2, Paquita Zuidema3, Steven G Howell4, Arthur J Sedlacek III5, Allison C Aiken6, Thomas B Watson7, James Robert Podolske8, Jonathan Taylor9, Jens Redemann8, Robert Wood10 and Steffen Freitag4, (1)University of Hawaii at Manoa, Honolulu, HI, United States, (2)University of Miami, Department of Atmospheric Science, Miami, FL, United States, (3)University of Miami, Miami, FL, United States, (4)University of Hawaii at Manoa, Oceanography, Honolulu, HI, United States, (5)Brookhaven National Lab, Upton, NY, United States, (6)Los Alamos National Laboratory, Los Alamos, NM, United States, (7)Brookhaven National Laboratory, Upton, NY, United States, (8)NASA Ames Research Center, Moffett Field, CA, United States, (9)University of Manchester, Manchester, United Kingdom, (10)Univ Washington, Seattle, WA, United States
 
Retrieving Spectral Single-scattering albedo of Absorbing Aerosols above Clouds from Synergy of ORACLES Airborne Sensors and A-train Satellites (512069)
Hiren T Jethva1, Omar Torres2, Richard Anthony Ferrare3, Sharon P Burton3, Anthony L Cook3, David B Harper3, Chris A Hostetler3 and Jens Redemann4, (1)Universities Space Research Association, Columbia, MD, United States, (2)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (3)NASA Langley Research Center, Hampton, VA, United States, (4)NASA Ames Research Center, Moffett Field, CA, United States
 
Quantifying Precipitation Susceptibility in Marine Stratocumulus with Varying Aerosol Concentrations Above Clouds: Results from ORACLES (518524)
Siddhant Gupta, University of Oklahoma Norman Campus, Norman, OK, United States, Greg M McFarquhar, Cooperative Institute for Mesoscale Meteorological Studies, University of Oklahoma, Norman, OK, United States, Michael Poellot, University of North Dakota, Grand Forks, ND, United States, Joseph R O'Brien, University of North Dakota, Grand Forks, United States, Andrew Dzambo, University of Wisconsin Madison, Madison, WI, United States and Simone Tanelli, Jet Propulsion Laboratory, Pasadena, CA, United States
 
A summary of ORACLES-deployments in 2016-2018 to study aerosol-radiation-cloud interactions in the South-East Atlantic (555553)
Jens Redemann, University of Oklahoma Norman Campus, School of Meteorology, Norman, OK, United States, Robert Wood, Univ Washington, Seattle, WA, United States, Paquita Zuidema, University of Miami, Miami, FL, United States, Sarah J Doherty, Univ Wash--JISAO, Seattle, WA, United States and ORACLES science team
 
Observational and model inter-comparisons of aerosol and cloud properties during the NASA ORACLES field campaign (561336)
Ian Yi-Yin Chang1, Jens Redemann2, Sharon P Burton3, Hong Chen4, Michael S Diamond5, Sarah J Doherty6, Yan Feng7, Richard Anthony Ferrare3, Gonzalo Andres Ferrada8, Connor Joseph Flynn9, Lan Gao10, Meloe S Kacenelenbogen11, Samuel E LeBlanc12,13, Karla M Longo de Freitas14, Marc Mallet15, Kerry Meyer16, Kristina Pistone17, Pablo E Saide18, Sebastian Schmidt19, Michal Segal-Rosenhaimer11, Yohei Shinozuka11,20, Robert Wood21, Paquita Zuidema22 and Sundar A Christopher23, (1)University of Oklahoma, School of Meteorology, Norman, OK, United States, (2)University of Oklahoma Norman Campus, School of Meteorology, Norman, OK, United States, (3)NASA Langley Research Center, Hampton, VA, United States, (4)LASP, University of Colorado Boulder, Boulder, CO, United States, (5)University of Washington, Atmospheric Sciences, Seattle, WA, United States, (6)Univ Wash--JISAO, Seattle, WA, United States, (7)Argonne National Laboratory, Environmental Science Division, Argonne, IL, United States, (8)University of Iowa, Center for Global and Regional Environmental Research, Iowa City, IA, United States, (9)University of Oklahoma Norman Campus, Norman, OK, United States, (10)University of Oklahoma Norman Campus, Cooperative Institute for Mesoscale Meteorological Studies, Norman, OK, United States, (11)NASA Ames Research Center, Moffett Field, CA, United States, (12)NASA Ames Research Center, Earth Science Division, Moffett Field, CA, United States, (13)Bay Area Environmental Research Institute, Moffett Field, CA, United States, (14)Universities Space Research Association Columbia, Columbia, United States, (15)CNRM / Meteo-France, Toulouse, France, (16)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (17)BAERI/NASA Ames Research Center, Moffett Field, United States, (18)University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, CA, United States, (19)LASP, University of Colorado, Boulder, CO, United States, (20)Universities Space Research Association Columbia, Columbia, CA, United States, (21)Univ Washington, Seattle, WA, United States, (22)University of Miami, Miami, FL, United States, (23)University of Alabama in Huntsville, Atmospheric and Earth Science, Huntsville, AL, United States
 
Remote Sensing Study of the Relationships Between Biomass Burning Aerosols and Marine Stratocumulus during ORACLES Campaign (562402)
Lan Gao, University of Oklahoma Norman Campus, Cooperative Institute for Mesoscale Meteorological Studies, Norman, OK, United States, Ian Chang, University of Oklahoma, School of Meteorology, Norman, OK, United States, Greg M McFarquhar, Cooperative Institute for Mesoscale Meteorological Studies, University of Oklahoma, Norman, OK, United States, Jens Redemann, University of Oklahoma Norman Campus, School of Meteorology, Norman, OK, United States and Eric M Wilcox, Desert Research Institute Reno, Reno, NV, United States
 
How Elevated Layers of Moisture and Smoke Impact Radiation and Clouds in the Southeast Atlantic Ocean (578552)
Ross Herbert1, Nicolas Bellouin2, Ellie J Highwood2, Gunnar Myhre3 and Øivind Hodnebrog, (1)University of Reading, Reading, RG6, United Kingdom, (2)University of Reading, Department of Meteorology, Reading, United Kingdom, (3)Center for International Climate and Environmental Research Oslo, Oslo, Norway
 
Airborne High Spectral Resolution Lidar-2 Measurements of Biomass Burning Aerosol Distributions over the Southeastern Atlantic Ocean during the ORACLES Field Missions (578841)
Richard Anthony Ferrare1, Sharon P Burton1, Anthony L Cook1, David B Harper1, Johnathan W Hair1, Chris A Hostetler1, Marian Clayton2, Marta A Fenn2, Snorre Stamnes1, Eduard Chemyakin3, Xu Liu1, Detlef Mueller3, Brian Cairns4 and Kenneth Sinclair5, (1)NASA Langley Research Center, Hampton, VA, United States, (2)SSAI, Hampton, VA, United States, (3)Science Systems and Applications, Inc. Hampton, Hampton, VA, United States, (4)NASA Goddard Institute for Space Studies, New York, NY, United States, (5)CCSR / NASA GISS, New York, NY, United States
 
Overview of the observed 3-D winds and temperature and derived sensible heat and momentum fluxes during the ORACLES field campaigns (2016-2018) (579257)
Kenneth Lee Thornhill II and John D W Barrick, Science Systems and Applications, Inc. Hampton, Hampton, VA, United States
 
The Dependence of Direct Aerosol Radiative Effects on the Underlying Albedo and Aerosol Properties: Results from the 2016 and 2017 ORACLES Field Campaigns (587038)
Sabrina Cochrane1, Sebastian Schmidt2, Hong Chen3, Peter Pilewskie4, Jens Redemann5, Samuel E LeBlanc6,7, Kristina Pistone8, Meloe S Kacenelenbogen9, Michal Segal-Rosenhaimer6, Yohei Shinozuka6,10, Connor Flynn11, Kerry Meyer12, Steven E Platnick12, Richard Anthony Ferrare13, Sharon P Burton13, Chris A Hostetler13, Sarah J Doherty14 and Marc Mallet15, (1)University of Colorado at Boulder, Boulder, CO, United States, (2)LASP, University of Colorado, Boulder, CO, United States, (3)Cuernavaca, Mexico, (4)University of Colorado Boulder, Boulder, CO, United States, (5)University of Oklahoma Norman Campus, School of Meteorology, Norman, OK, United States, (6)NASA Ames Research Center, Moffett Field, CA, United States, (7)Bay Area Environmental Research Institute, Moffett Field, CA, United States, (8)BAERI/NASA Ames Research Center, Moffett Field, United States, (9)BAERI, Moffett Field, CA, United States, (10)Universities Space Research Association Columbia, Columbia, CA, United States, (11)University of Oklahoma Norman Campus, Norman, United States, (12)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (13)NASA Langley Research Center, Hampton, VA, United States, (14)Univ Wash--JISAO, Seattle, WA, United States, (15)Laboratoire d'Aérologie - Observatoire Midi Pyrénées, Toulouse, France
 
Aerosol above cloud, optical depth, and direct radiative effect in the southeast Atlantic (599691)
Samuel E LeBlanc1, Jens Redemann1, Connor Flynn2, Kristina Pistone3, Michal Segal-Rosenhaimer1, Meloe S Kacenelenbogen4, Yohei Shinozuka5, Stephen P Broccardo6, Sebastian Schmidt7, Sabrina Cochrane8, Hong Chen9, Richard Anthony Ferrare10, Sharon P Burton10, Chris A Hostetler10 and Johnathan W Hair10, (1)NASA Ames Research Center, Moffett Field, CA, United States, (2)University of Oklahoma Norman Campus, Norman, United States, (3)BAERI/NASA Ames Research Center, Moffett Field, United States, (4)BAERI, Moffett Field, CA, United States, (5)Bay Area Environmental Research Institute Sonoma, Sonoma, CA, United States, (6)Universities Space Research Association San Jose, Moffett Field, CA, United States, (7)LASP, University of Colorado, Boulder, CO, United States, (8)University of Colorado at Boulder, ATOC, Boulder, CO, United States, (9)Cuernavaca, Mexico, (10)NASA Langley Research Center, Hampton, VA, United States
 
Observations of Marine Stratocumulus Cloud and Precipitation Properties from ORACLES: Comparison of multi-frequency radar and in-situ instrumentation (605639)
Joseph Robert O'Brien1, Andrew Heymsfield2, Michael Poellot1, Greg M McFarquhar3, Simone Tanelli4, Sharon P Burton5, Andrew Dzambo6 and Siddhant Gupta7, (1)University of North Dakota, Grand Forks, ND, United States, (2)National Center for Atmospheric Research, Boulder, CO, United States, (3)Cooperative Institute for Mesoscale Meteorological Studies, University of Oklahoma, Norman, OK, United States, (4)Jet Propulsion Laboratory, Pasadena, CA, United States, (5)NASA Langley Research Center, Hampton, VA, United States, (6)University of Wisconsin Madison, Madison, WI, United States, (7)University of Oklahoma Norman Campus, Norman, OK, United States
 
CCN budgets in the context of stratocumulus transitions: ORACLES observations and large-eddy simulations (607524)
Andrew S Ackerman1, Hyunho Lee1, Ann M Fridlind1, David Painemal2, Brian Cairns1 and Arlindo daSilva3, (1)NASA Goddard Institute for Space Studies, New York, NY, United States, (2)Science Systems and Applications, Inc. Hampton, Hampton, VA, United States, (3)NASA Goddard Space Flight Center, Greenbelt, MD, United States
 
Assessment of Meteosat-SEVIRI cloud retrievals in open cells and partially cloudy scenes over the southeast Atlantic (608542)
David Painemal1, William L Smith Jr2, Brian Cairns3, Andrew S Ackerman3 and Ann M Fridlind3, (1)Science Systems and Applications, Inc. Hampton, Hampton, VA, United States, (2)NASA Langley Research Ctr, Hampton, VA, United States, (3)NASA Goddard Institute for Space Studies, New York, NY, United States
 
An Investigation of a Cloud Droplet Size Distribution’s Dispersion using Remotely Sensed Observations (626557)
Kenneth Sinclair, Columbia University of New York, Earth and Environmental Engineering, Palisades, NY, United States, Brian Cairns, NASA Goddard Institute for Space Studies, New York, NY, United States and Mikhail D Alexandrov, Columbia Univ, New York, NY, United States
 
Analysis of evaporation rates in virga from stratocumulus over the southeast Atlantic Ocean (631751)
Andrew Dzambo and Tristan L'Ecuyer, University of Wisconsin Madison, Madison, WI, United States
 
Observation-Based Aerosol Induced Stratocumulus-Cumulonimbus Transition in the Equatorial Atlantic (633563)
Osinachi Ajoku1, Joel R Norris1 and Arthur J Miller2, (1)Scripps Institution of Oceanography, La Jolla, CA, United States, (2)University of California San Diego, La Jolla, CA, United States
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