Session 6B The ATom Mission—Part III

Tuesday, 9 January 2018: 1:30 PM-3:30 PM
Room 9 C (ACC) (Austin, Texas)
Host: 20th Conference on Atmospheric Chemistry
Michael J. Prather, NASA USRA, GESTAR, Greenbelt, MD and Steven Wofsy, Harvard Univ., School of Engineering and Applied Sciences - Earth And Planetary Sciences Department, Cambridge, MA

The NASA Atmospheric Tomography (ATom) mission has embarked on a unique global transect of tropospheric chemistry, measuring a full suite of reactive gases and aerosols along curtains through the remote Pacific and Atlantic Ocean basins.  These ocean basins comprise most of the photochemical activity of the troposphere, controlling the global abundances of many species such as methane and tropospheric ozone.  By the time this session begins, three of the four-season deployments will be completed and the datasets from the first two deployments will be publicly available. We invite presentations using ATom data, including in combination with other data, that examine the global scope of tropospheric gases and aerosols, particularly considering the evidence for and impacts of distant pollution sources on the oceanic atmosphere.

1:30 PM
Global Distributions of Coarse-Mode Aerosol and Clouds during the Atmospheric Tomography Mission (ATom)
Bernadett Weinzierl, Univ. of Vienna, Vienna, Austria; and M. Dollner, H. Schuh, C. A. Brock, T. P. Bui, G. S. Diskin, K. D. Froyd, J. Gasteiger, J. Katich, A. Kupc, D. Murphy, J. P. Schwarz, A. Spanu, and C. J. Williamson

1:45 PM
The Global Distribution of Sea Salt Aerosol
Daniel Murphy, NOAA, Boulder, CO; and K. D. Froyd, C. A. Brock, M. Dollner, A. Kupc, B. Weinzierl, C. J. Williamson, and P. Yu

2:00 PM
Global-Scale Measurements of CCN-Sized Particles in the Remote Marine Boundary Layer: Results from the Atmospheric Tomography Mission
Charles A. Brock, NOAA, Boulder, CO; and A. Kupc, C. J. Williamson, K. D. Froyd, D. Murphy, J. L. Jimenez, P. Campuzano-Jost, B. Nault, B. Weinzierl, M. Dollner, F. Erdesz, M. Richardson, N. L. Wagner, and T. V. Bui
2:15 PM
Geographical and Vertical Distribution of Organic Aerosol (OA) during ATom-1 and 2: Chemical Removal and Aging as a Function of Photochemical Age
Pedro Campuzano-Jost, Univ. of Colorado, Boulder, CO; and B. A. Nault, J. C. Schroder, D. A. Day, J. L. Jimenez, J. Katich, J. P. Schwarz, R. Commane, B. Daube, S. Wofsy, N. J. Blake, D. R. Blake, C. L. Heald, A. Hodzic, H. Bian, P. R. Colarco, M. Chin, E. A. Ray, S. Pawson, and P. A. Newman

2:30 PM
Temporal Variability of Inefficient Combustion Sources in Africa and the Impact on Pollution over the Atlantic Ocean
Eloise A. Marais, Univ. of Birmingham, Birmingham, United Kingdom; and H. Worden, R. Commane, B. Daube, and S. Wofsy
2:45 PM
Black Carbon Vertical Distributions in Transported Biomass Burning Plumes
Joshua P. Schwarz, NOAA, Boulder, CO; and J. katich, B. Weinzierl, M. Dollner, C. A. Brock, C. J. Williamson, A. Kupc, B. C. Daube, P. O. Wennberg, and J. Crounse

3:00 PM
Current State of the Arctic Atmosphere as Observed by the NASA Atmospheric Tomography (ATom) Mission
Jack E. Dibb, Univ. of New Hampshire, Durham, NH; and E. C. Apel, B. Barletta, D. R. Blake, N. J. Blake, R. Commane, E. J. Hintsa, R. Hornbrook, S. A. Montzka, S. C. Wofsy, and ATom Science Team
3:15 PM
Constraining New Particle Formation in Global Models with Global-Scale Measurements of Aerosol Size Distributions
Christina J Williamson, CIRES, Boulder, CO; and A. Kupc, P. Yu, J. Kodros, A. Hodshire, J. R. Pierce, K. Froyd, E. A. Ray, F. Erdesz, M. Richardson, T. V. Bui, and C. A. Brock
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