A44C:
Improving Our Mechanistic Understanding of the Regional Climate Response to Anthropogenic Aerosols I

Submit an Abstract to this Session



Session ID#: 30785

Session Description:
The extent to which regional changes in the climate system are influenced by anthropogenic aerosols is not yet well understood. Aerosols, the largest forcing uncertainty over the industrial period, are important since their forcing is spatially heterogeneous and can counteract greenhouse gas forcing. By modulating radiation and altering cloud properties, aerosols affect surface and atmospheric heating gradients and precipitation, and further result in atmospheric circulation changes. The objective of this session is to improve the understanding of mechanisms and pathways for the aerosol impact on regional climate worldwide. Observational and idealized/comprehensive modeling studies focusing on changes in variability, long-term trends, and extremes in the hydrological cycle, in the recent past and in near-future projections, are particularly solicited. We encourage papers investigating the impact of aerosols on monsoon systems, ITCZ, tropical-extratropical interactions and teleconnections, modes of variability, and the role of local versus remote aerosol emissions.
Primary Convener:  Massimo A Bollasina, University of Edinburgh, Edinburgh, United Kingdom
Conveners:  Yi Ming, Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States and Laura Wilcox, University of Reading, National Centre for Atmospheric Science, Reading, RG6, United Kingdom
Chairs:  Massimo A Bollasina, University of Edinburgh, Edinburgh, United Kingdom and Yi Ming, Boston College, Chestnut Hill, MA, United States
OSPA Liaison:  Massimo A Bollasina, University of Edinburgh, Edinburgh, United Kingdom

Cross-Listed:
  • GC - Global Environmental Change
Index Terms:

0305 Aerosols and particles [ATMOSPHERIC COMPOSITION AND STRUCTURE]
1620 Climate dynamics [GLOBAL CHANGE]
3305 Climate change and variability [ATMOSPHERIC PROCESSES]
3354 Precipitation [ATMOSPHERIC PROCESSES]

Abstracts Submitted to this Session:

Aerosol reductions could dominate regional climate responses in low GHG emission scenarios (Invited) (237939)
Bjorn Hallvard Samset1, Maria Sand2, Christopher James Smith3, Susanne Bauer4, Piers Forster5, Jan S Fuglestvedt2, Scott M Osprey6 and Carl-Friedrich Schleussner7, (1)CICERO Center for International Climate Research, Oslo, Norway, (2)Center for International Climate and Environmental Research Oslo, Oslo, Norway, (3)University of Leeds, Leeds, United Kingdom, (4)NASA Goddard Institute for Space Studies, New York, United States, (5)University of Leeds, School of Earth and Environment, Leeds, United Kingdom, (6)AOPP, Clarendon Laboratory, University of Oxford, Oxford, United Kingdom, (7)Climate Analytics GmbH, Berlin, Germany
Constraining Aerosol Forcing from the Land Surface Temperature Record  (236708)
Zhaoyi Shen, Caltech, Environmental Science and Engineering, Pasadena, CA, United States, Yi Ming, Boston College, Chestnut Hill, MA, United States and Isaac Held, Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States
Identifying robust regional precipitation responses to regional aerosol emissions perturbations in three coupled chemistry-climate models (258257)
Daniel M Westervelt, Lamont-Doherty Earth Observatory, Palisades, NY, United States; NASA Goddard Institute for Space Studies, New York, United States, Arlene M Fiore, Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, Cambridge, United States, J F Lamarque, NCAR, Boulder, CO, United States, Michael J Previdi, Columbia University, Lamont‐Doherty Earth Observatory, Palisades, United States, Andrew J Conley, National Center for Atmospheric Research, Atmospheric Chemistry Observations & Modeling, Boulder, CO, United States, Drew T Shindell, Duke University, Nicholas School of the Environment, Durham, United States, Nora Rose Mascioli, Columbia University, Palisades, NY, United States, Gustavo J P Correa, Columbia University, Palisades, United States, Gregory Faluvegi, NASA Goddard Institute for Space Studies, New York, NY, United States and Larry Wayne Horowitz, NOAA Geophysical Fluid Dynamics Laboratory, Princeton, United States
The Influence of Emission Location on the Magnitude and Spatial Distribution of Aerosols’ Climate Effects (258748)
Geeta Persad, Carnegie Institution for Science Stanford, Stanford, CA, United States and Ken Caldeira, Gates Ventures, Kirkland, United States
Regional scale temperature and circulation impacts of short-lived climate pollutants reductions (285945)
Thomas Oudar1, Paul J Kushner2, John C Fyfe3, Knut von Salzen4 and Rudra Shrestha4, (1)University of Toronto, Toronto, ON, Canada, (2)University of Toronto, Physics, Toronto, ON, Canada, (3)Environment Canada, Canadian Centre for Climate Modeling and Analysis, Victoria, BC, Canada, (4)CCCma, Environment and Climate Change Canada, Victoria, BC, Canada
The Impacts of Aerosols on Hurricane Katrina under the Effect of Air-Sea Coupling (225563)
Yun Lin, Texas A&M University College Station, College Station, TX, United States, Jen-Shan Hsieh, Texas A & M University, College Station, TX, United States, Yuan Wang, California Institute of Technology, Pasadena, CA, United States and Renyi Zhang, Texas A&M University, Department of Atmospheric Sciences, College Station, United States
Impacts of Aerosols on Seasonal Precipitation and Snowpack in California Based on Convection-Permitting WRF-Chem Simulations (221337)
Longtao Wu, NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States, Yu Gu, UCLA, Department of Atmospheric and Oceanic Sciences, Los Angeles, United States, Jonathan H. Jiang, NASA Jet Propulsion Laboratory, Pasadena, CA, United States, Hui Su, Jet Propulsion Lab, Pasadena, United States, Nanpeng Yu, University of California Riverside, Riverside, CA, United States, Chun Zhao, University of Science and Technology of China, School of Earth and Space Sciences, Hefei, China, Yun Qian, PNNL / Climate Physics, Richland, WA, United States, Bin Zhao, Pacific Northwest National Laboratory, Beijing, China, Kuo-Nan Liou, Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA, United States and Yong-Sang Choi, Ewha Womans University, Seoul, South Korea
The Role of Air-sea Coupling in the Response of Climate Extremes to Aerosols (300230)
Salil Mahajan, Oak Ridge National Laboratory, Oak Ridge, TN, United States

See more of: Atmospheric Sciences