A035-0008
Going With the Flow: Using a Particle Dispersion Model to Reveal Links Between Ocean Ecosystems and Marine Aerosols

Tuesday, 8 December 2020
Poster
Kevin Sanchez1, Richard Moore2, Bo Zhang3, Hongyu Liu3, Georges Saliba4, Chia-Li Chen5, Savannah Lewis6, Lynn M Russell6, Michael Shook2, Ewan Crosbie2, Luke D Ziemba2, Matthew Donald Brown7, Taylor J Shingler8, Claire E Robinson2, Elizabeth Brooke Wiggins1, Kenneth Lee Thornhill II2, Edward Winstead8, Carolyn E Jordan3, Patricia Quinn9, Timothy S Bates10, Jack Porter11, Thomas George Bell12, Eric S Saltzman11 and Michael Behrenfeld13, (1)Universities Space Research Association Columbia, Columbia, MD, United States, (2)NASA Langley Research Center, Hampton, VA, United States, (3)National Institute of Aerospace, Hampton, VA, United States, (4)Carnegie Mellon University, Center for Atmospheric Particle Studies, Pittsburgh, PA, United States, (5)University of California San Diego, La Jolla, CA, United States, (6)University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, (7)NASA Langley Research Center, Chemistry and Dynamics Branch, Hampton, VA, United States, (8)Science Systems and Applications, Inc., Hampton, VA, United States, (9)Atmospheric Chemistry Group & TPOS 2020 project, University of Washington/JISAO & NOAA/PMEL, Seattle, WA 98115, Seattle, WA, United States, (10)NOAA PMEL, Seattle, WA, United States, (11)University of California Irvine, Irvine, CA, United States, (12)Plymouth Marine Laboratory, Plymouth, PL1, United Kingdom, (13)Oregon State University, Corvallis, OR, United States
Abstract:
Marine biogenic particle contributions to atmospheric aerosol concentrations are not well understood though they are important for determining cloud optical and cloud nucleating properties. Here we examine the relationship between marine aerosol measurements with satellite and model fields of ocean biology and meteorological variables during the North Atlantic Aerosols and Marine Ecosystems Study (NAAMES). NAAMES consisted of four field campaigns between November 2015 and April 2018 that aligned with the four major phases of the annual phytoplankton bloom cycle. The FLEXPART Lagrangian particle dispersion model is used to connect these variables spatiotemporally to ship-based aerosol. We find that correlations between some aerosol measurements with satellite measured and modelled variables increase with increasing trajectory length. This indicates biological and meteorological processes over the air mass history are influential to measured particle properties. For example, results show organic aerosol mass is driven by biogenic volatile organic compound (VOC) emissions from photosynthesis by phytoplankton stocks during advection into the region. In contrast, primary marine aerosol (PMA) concentrations better correlate to variables weighted with shorter air mass residence times, reflecting their localized origin as primary emissions. Evidence also suggest variability in PMA concentrations likely play an important role in VOC emission removal. The removal of VOCs lessen their impact on particle number and mass concentrations. The sensitivity of marine aerosols to the main ecosystem-atmosphere drivers and its dependence on air mass history are to be further discussed.
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