A063
Exploring Inadvertent and Deliberate Aerosol Perturbations on Clouds and the Climate
Session ID#: 249375
Session Description:
Aerosol-cloud interactions are responsible for substantial but uncertain radiative effects, with important implications for our understanding of recent climate changes and the effects of potential climate intervention such as marine cloud brightening, mixed phase cloud thinning, and cirrus cloud thinning. Process understanding and more credible modelling capabilities are necessary to quantify these effects. “Opportunistic” experiments created by localized aerosol perturbations allow estimates of the causal effect of aerosols on clouds. This session invites studies examining aerosol perturbations and the processes governing their distribution/composition, effects on clouds/atmosphere, and novel methods for analyzing observations such as by using machine learning. We invite observational and modelling studies across scales that examine responses to opportune events and intentional emissions, and the representation of these events in global models with aerosol and cloud parameterizations. This session seeks to connect different facets of research on aerosol perturbations to help clarify uncertainties in aerosol-cloud interactions.
Co-Sponsor(s):
Index Terms:
1640 Remote sensing [GLOBAL CHANGE]
3311 Clouds and aerosols [ATMOSPHERIC PROCESSES]
3323 Large eddy simulation [ATMOSPHERIC PROCESSES]
3365 Subgrid-scale (SGS) parameterization [ATMOSPHERIC PROCESSES]
Primary Convener: Haruki Hirasawa, University of Washington, Department of Atmospheric and Climate Science, Seattle, United States
Conveners: Lucas McMichael1, Tianle Yuan2 and Haipeng Zhang2, (1)University of Washington Seattle Campus, Atmospheric and Climate Science, Seattle, United States(2)University of Maryland Baltimore County, Baltimore, United States
Student/Early Career Convener: Cindy Wang, Cornell University, Ithaca, United States
Conflict-Induced Ship Traffic Disruptions Constrain Cloud Sensitivity to Stricter Marine Pollution Regulations (Invited) (1847271)
Michael S Diamond, Florida State University, Earth, Ocean, & Atmospheric Science, Tallahassee, FL, United States and Lili Boss, Florida State University, Earth, Ocean, & Atmospheric Science, Tallahassee, United States
Complex seasonality of Arctic mixed-phase cloud brightening/thinning (Invited) (1850961)
Clare E. Singer, University of Colorado at Boulder, Boulder, United States, Andrew Gettelman, Pacific Northwest National Laboratory, Richland, WA, United States, Marika M Holland, Natl Ctr Atmospheric Research (NCAR), Boulder, United States and Walker Lee, NSF National Center for Atmospheric Research, Climate & Global Dynamics, Boulder, United States
A framework for defining scales of SRM field studies involving controlled aerosol emissions (1859245)
Sarah J Doherty1, Michael Diamond2, Robert Wood1 and Haruki Hirasawa3, (1)University of Washington, Department of Atmospheric and Climate Science, Seattle, United States, (2)Florida State University, Tallahassee, United States, (3)University of Washington Seattle Campus, Department of Atmospheric and Climate Science, Seattle, United States
Extensive Decline of Reflective Clouds over the North Atlantic and Northeast Pacific (1866213)
Knut von Salzen1,2, Ayodeji Akingunola1, Jason N Cole1, Ruth Digby1, Sarah J Doherty3, Luke Fraser-Leach4, Edward Gryspeerdt5, Michael Sigmond6 and Robert Wood3, (1)Environment and Climate Change Canada, Canadian Centre for Climate Modelling and Analysis, Victoria, BC, Canada, (2)University of Washington Seattle Campus, Atmospheric and Climate Science, Seattle, United States, (3)University of Washington, Department of Atmospheric and Climate Science, Seattle, United States, (4)University of Toronto, Toronto, ON, Canada, (5)Imperial College London, Physics, London, United Kingdom, (6)Canadian Centre for Climate Modelling and Analysis, Victoria, BC, Canada
Estimating Twomey forcing sensitivity to ship track spreading rates using a combination of LES and Langevin particle modeling (1866364)
Lucas A McMichael1, Robert Wood2, Knut von Salzen1 and Ehsan Erfani3, (1)University of Washington Seattle Campus, Atmospheric and Climate Science, Seattle, United States, (2)University of Washington, Department of Atmospheric and Climate Science, Seattle, United States, (3)DRI Desert Research Institute, Reno, United States
Exploring the combination of Marine Cloud Brightening and Stratospheric Aerosol Inejction (1879012)
Ezra Brody1, Douglas MacMartin2, Daniele Visioni1, Ewa Bednarz3 and Ben Kravitz4, (1)Cornell University, Ithaca, NY, United States, (2)Cornell University, Sibley School of Mechanical and Aerospace Engineering, Ithaca, NY, United States, (3)CIRES / NOAA Chemical Sciences Laboratory, Boulder, United States, (4)Indiana University, Bloomington, United States
Quantification of the influence of anthropogenic and natural factors on the record-high temperatures in 2023 and 2024 (1885963)
Endre Farago, University of Maryland College Park, College Park, United States, Laura McBride, Science and Technology Corporation, Columbia, MD, United States, Austin P Hope, Stony Broke University, Stony Brook, United States, Timothy Canty, University of Maryland College Park, Department of Atmospheric and Oceanic Science, College Park, United States, Brian Francis Bennett, University of Maryland, Department of Atmospheric and Oceanic Science, College Park, MD, United States and Ross J Salawitch, University of Maryland, AOSC and Chemistry, College Park, United States
Negligible Contribution from Aerosols to Recent Trends in Earth’s Energy Imbalance (1903353)
Chanyoung Park, University of Miami, Rosenstiel School of Marine, Atmospheric, and Earth Science, Miami, FL, United States and Brian Soden, University of Miami, Rosenstiel School of Marine, Atmospheric, and Earth Science, Miami, United States
Comparative Analysis of Stratus Clouds in the Southern Ocean and Arctic Ocean: Implications for Mixed Phase Cloud Thinning (1909409)
Lauren M Zamora, University of Maryland, College Park, Greenbelt, United States; NASA Goddard Space Flight Center, College Park, United States, Jasper F Kok, University of California Los Angeles, Department of Atmospheric and Oceanic Sciences, Los Angeles, CA, United States, Amato T Evan, Scripps Institute of Oceanography, La Jolla, CA, United States, Kathryn A. Moore, Colorado State University, Fort Collins, CO, United States, Xia Li, University of California Los Angeles, Department of Atmospheric and Oceanic Sciences, Los Angeles, United States and Gregory V Cesana, Columbia University of New York, CCSR, New York, United States
Exploring the Colocation and Validation of PREFIRE and EarthCARE Observations for Smoke Aerosol-Cloud Interactions (1914781)
Paige Bartels, University of Wisconsin -- Madison, Department of Atmospheric and Oceanic Sciences, Madison, United States, Mayra Oyola Merced, University of Wisconsin-Madison, Department of Atmospheric and Oceanic Sciences, Madison, WI, United States and Tristan L'Ecuyer, University of Wisconsin, Department of Atmospheric and Oceanic Sciences, Madison, United States
Cirrus cloud thinning susceptibility in a future climate with warming in E3SM (1934899)
Allen Hu, Texas A&M University College Station, College Station, TX, United States, Xiaohong Liu, Texas A&M University, College Station, United States, Benjamin R Hillman, Sandia National Laboratories, Albuquerque, NM, United States, Diana L Bull, Sandia National Laboratories, Albuquerque, United States, Peter N Blossey, University of Washington, Department of Atmospheric and Climate Science, Seattle, United States and Samantha Turbeville, University of Washington, Seattle, WA, United States
Far-reaching Effects of Cooling a Coastal Megacity with Marine Cloud Brightening Modeled Using a Regionally Refined Mesh Grid (1955173)
Jessica Wan1,2, Simone Tilmes3, Adam R Herrington4, Jared Brzenski1 and Katharine Ricke5,6, (1)University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, (2)University of Chicago, Climate Systems Engineering initiative, Chicago, United States, (3)NSF National Center for Atmospheric Research, Atmospheric Chemistry Observations and Modeling Laboratory, Boulder, United States, (4)NSF National Center for Atmospheric Research, CGD, Boulder, United States, (5)University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, (6)University of California San Diego, School of Global Policy and Strategy, La Jolla, United States
Global trends in cloud droplet concentrations in marine boundary layer clouds from MODIS. (1970924)
Ryan M Eastman, University of Washington, Atmospheric Sciences Department, Seattle, WA, United States, Chris Wright, University of Washington Seattle Campus, Seattle, United States, Knut von Salzen, Environment and Climate Change Canada, Canadian Centre for Climate Modelling and Analysis, Victoria, BC, Canada and Robert Wood, University of Washington, Department of Atmospheric and Climate Science, Seattle, United States
Potential climate effects of a low aerosol forcing nuclear war (1981671)
Anson Ka Hei Cheung1, Paul J Kushner1, Francesco S.R. Pausata2, Zhihong Zhuo3 and Marguerite Brown4, (1)University of Toronto, Physics, Toronto, ON, Canada, (2)University of Quebec in Montreal, Department of Earth and Atmospheric Sciences, Montreal, Canada, (3)University of Quebec in Montreal (UQAM), Department of Earth and Atmospheric Sciences, Montreal, QC, Canada, (4)University of Quebec at Montreal UQAM, Montreal, QC, Canada
Visible Ship Tracks Reveal Dark Matter of Aerosol Indirect Forcing from Ship Emissions (1986033)
Tianle Yuan, NASA Goddard Space Flight Center, Greenbelt, MD, United States, Hua Song, University of Maryland Baltimore County, Baltimore, MD, United States, Lili Boss, Florida State University, Earth, Ocean, & Atmospheric Science, Tallahassee, United States and Michael Diamond, Florida State University, Tallahassee, United States
Optimal Conditions for Enhancing Radiative Cooling Through Marine Low Cloud Intervention Based on a Deep Learning Model (1992564)
Minghuai Wang, Nanjing University, School of Atmospheric Sciences, Nanjing, China, Yang Cao, University of California Los Angeles, Los Angeles, CA, United States, Yannian Zhu, Nanjing University, Nanjing, China and Daniel Rosenfeld, Hebrew University, Jerusalem, Israel
