A13H:
The Underappreciated Aerosol Coarse Mode Posters

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Session ID#: 12675

Session Description:

Many areas of the world show an aerosol volume distribution with a significant coarse mode. The large coarse mode is usually due to dust, but other aerosols can also play an important role. This mode tends to be ignored because it is difficult to measure, and the perception that it does not exert a large effect on aerosol forcing or chemistry. However, coarse mode aerosols can have substantial impact on ice nuclei concentration and significant effect on shortwave and longwave radiative forcings, and these forcings must be accounted for in atmospheric models. Forcings based only on fine mode aerosols have the potential to be misleading, as demonstrated in recent studies. We seek papers regarding: coarse mode aerosol generation mechanisms, transport and deposition, chemical composition and interaction with fine mode aerosols, contributions to ice nucleation, visible and thermal IR radiative properties, coarse mode effects on forcings, and specific instrumentation needs.

Primary Convener:  Evgueni Kassianov, Pacific Northwest National Laboratory, Richland, WA, United States
Conveners:  William P Arnott1, Jim Barnard1 and Allison C McComiskey2, (1)University of Nevada Reno, Reno, NV, United States(2)NOAA Boulder, Boulder, CO, United States
Chairs:  Evgueni Kassianov, Pacific Northwest National Laboratory, Richland, WA, United States and Allison C McComiskey, NOAA Boulder, Boulder, CO, United States
OSPA Liaison:  Allison C McComiskey, NOAA Boulder, Boulder, CO, United States
Index Terms:

0305 Aerosols and particles [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0365 Troposphere: composition and chemistry [ATMOSPHERIC COMPOSITION AND STRUCTURE]
3311 Clouds and aerosols [ATMOSPHERIC PROCESSES]
3359 Radiative processes [ATMOSPHERIC PROCESSES]

Abstracts Submitted to this Session:

Characterization of coarse mode aerosol from various remote sensing using GRASP algorithm (Invited) (130753)
Oleg Dubovik1, Pavel Litvinov2, Tatyana Lapyonok3, Fabrice Ducos4, Xin Huang2, Anton Lopatin2, Benjamin Torres5, David Fuertes6 and Yevgeny Derimian4, (1)University of Lille, Laboratoire d'Optique Atmosphérique, Villeneuve d'Ascq, France, (2)University of Lille 1, Laboratoire d'Optique Atmosphérique, Villeneuve d'Ascq, France, (3)Univ. Lille, CNRS, UMR 8518 - LOA - Laboratoire d’Optique Atmosphérique, Lille, France, (4)Laboratoire d'Optique Atmosphérique, CNRS/University of Lille, Lille, France, (5)GRASP - SAS, Villeneuve d'Ascq, France, (6)GRASP SAS, Remote Sensing Developments, Lille, France
Trans-pacific Dust during Atmospheric River Landfall in the Western U.S. (Invited) (161418)
Chun Zhao1, Zhiyuan Hu2, L. Ruby Leung3, Samson M Hagos3, Jianping Huang2 and Yun Qian1, (1)Pacific Northwest National Laboratory, Atmospheric Sciences and Global Change Division, Richland, WA, United States, (2)LZU Lanzhou University, Lanzhou, China, (3)Pacific Northwest National Laboratory, Richland, WA, United States
Super-micron Particles over US Coastal Region: Seasonal Changes from TCAP data (168010)
Evgueni Kassianov1, Mikhail S Pekour1, Connor J. Flynn2, Larry K Berg3, Jerome D Fast1, Alla Zelenyuk1, Jason M Tomlinson1, Duli Chand4, Jim Barnard5 and Anne Jefferson6, (1)Pacific Northwest National Laboratory, Richland, WA, United States, (2)PNNL, Richland, United States, (3)Pacific Northwest National Laboratory, Atmospheric Sciences and Global Change Division, Richland, WA, United States, (4)Pacific Northwest National Laboratory, Atmospheric Sciences & Global Change Division, Richland, WA, United States, (5)University of Nevada Reno, Reno, NV, United States, (6)University of Colorado at Boulder, Boulder, CO, United States
A 10-year climatology of pollen aerosol for the continental United States: implications for aerosol-climate interactions (181908)
Matthew Christopher Wozniak, University of Michigan, Department of Climate and Space Sciences and Engineering, Ann Arbor, MI, United States
Vertical distributions of fluorescent aerosol over the Eastern U.S. (184936)
Anne Elizabeth Perring1, Ellis Shipley Robinson2, Dr. Joshua Peter Schwarz, PhD3 and Ru-Shan Gao3, (1)Colgate University, Hamilton, NY, United States, (2)Carnegie Mellon University, Pittsburgh, United States, (3)NOAA Boulder, Boulder, CO, United States
Fractal scaling laws of black carbon aerosol and their influence on spectral radiative properties (191295)
Rajan K Chakrabarty, Washington University in St Louis, St. Louis, MO, United States, William Heinson, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States and Suresh Tiwari, Indian Institute of Tropical Meteorology, Pune, India
Global measurements of coarse-mode aerosol size distributions – first results from the Atmospheric Tomography Mission (ATom) (192939)
Bernadett Weinzierl1, Maximilian Dollner1, Harald Schuh2, Charles A Brock3, Thaopaul V Bui4, Josef Gasteiger5, Karl D Froyd6,7, Dr. Joshua Peter Schwarz, PhD6, Antonio Spanu2, Daniel M Murphy6, Joseph M Katich6,8, Agnieszka Kupc9,10 and Christina Williamson10,11, (1)University of Vienna, Faculty of Physics, Aerosol Physics and Environmental Physics, Vienna, Austria, (2)University of Vienna, Aerosol Physics and Environmental Physics, Vienna, Austria, (3)NOAA, Chemical Sciences Laboratory, Boulder, United States, (4)NASA Ames Research Center, Moffett Field, United States, (5)University of Vienna, Vienna, Austria, (6)NOAA Boulder, Boulder, CO, United States, (7)CIRES, Boulder, United States, (8)University of Colorado Cooperative Institute for Research in Environmental Sciences (CIRES) at the NOAA Chemical Sciences Laboratory (CSL), Boulder, CO, United States, (9)University of Vienna, Faculty of Physics, Vienna, Austria, (10)NOAA Chemical Sciences Laboratory, Boulder, United States, (11)CIRES, Boulder, CO, United States
Time-Resolved Raman Spectra Measured with an Aerosol Raman Spectrometer (198997)
David C Doughty III1, Steven C Hill2, Alan Wetmore2, Gorden Videen3 and Deryck James4, (1)US Army Research Laboratory, White Sands Missile, NM, United States, (2)Army Research Laboratory, Adelphi, MD, United States, (3)Space Science Institute Boulder, Boulder, CO, United States, (4)U. S. Army Research Laboratory, Adelphi, United States

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