CT11A:
Atmospheric Deposition and Ocean Biogeochemistry I


Session ID#: 11297

Session Description:
Atmospheric deposition of marine, lithogenic and anthropogenic aerosols is an important transport pathway for nutrients and contaminants to the surface ocean. Constraining local, regional and global atmospheric deposition flux estimates and the bioavailability of aerosol-derived elements and compounds is essential for furthering understanding of ocean biogeochemistry. This transport pathway acts as an important chemical bridge between the lithosphere and hydrosphere linking major biogeochemical cycles. Aerosol emission, transport and deposition processes are, in part, a function of global change related to changes in land coverage, anthropogenic emissions and climate. Hence the study of ocean responses will improve our ability to predict future impacts. The GEOTRACES international program includes objectives related to the atmospheric input of trace elements and isotopes to accomplish its goal. Other programs, such as SOLAS and CLIVAR, continue to make significant contributions as well. This session invites contributions from studies of atmospheric deposition in the marine environment, including observations of atmospheric deposition fluxes, aerosol composition, aerosol fractional solubility, the fate of aerosol-derived compounds and the biological and chemical response to deposition within the surface ocean. Contributions from global and regional scale field observations, laboratory studies and modeling efforts are welcomed.
Primary Chair:  Ana M Aguilar-Islas, University of Alaska Fairbanks, College of Fisheries and Ocean Sciences, Fairbanks, AK, United States
Chairs:  Clifton S Buck, Skidaway Institute of Oceanography, Savannah, GA, United States and Meredith Galanter Hastings, Brown University, Department of Earth, Environmental and Planetary Sciences, and Institute at Brown for Environment and Society, Providence, RI, United States
Moderators:  Ana M Aguilar-Islas, University of Alaska Fairbanks, College of Fisheries and Ocean Sciences, Fairbanks, AK, United States, Clifton S Buck, Skidaway Institute of Oceanography, Savannah, GA, United States and Meredith Galanter Hastings, Brown University, Department of Earth, Environmental and Planetary Sciences, and Institute at Brown for Environment and Society, Providence, RI, United States
Student Paper Review Liaison:  Clifton S Buck, Skidaway Institute of Oceanography, Savannah, GA, United States
Index Terms:

4801 Aerosols [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4845 Nutrients and nutrient cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4875 Trace elements [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Co-Sponsor(s):
  • B - Biogeochemistry and Nutrients

Abstracts Submitted to this Session:

CT11A-01
Isotopes of atmospheric nitrate from the GEOTRACES Atlantic and Pacific Sections (93289)
Meredith Galanter Hastings, Brown University, Department of Earth, Environmental and Planetary Sciences, and Institute at Brown for Environment and Society, Providence, RI, United States, Therese Carter, Brown University, Department of Chemistry, Providence, RI, United States and Karen L Casciotti, Stanford University, Earth System Science, Stanford, United States
CT11A-02
Deposition of Atmospheric Nitrogen to Coastal Ecosystems (DANCE): A study in seasonally oligotrophic waters off the eastern U.S. (93204)
Raymond Najjar1, Peter Sedwick2, Margaret R Mulholland2, Marjorie A. M. Friedrichs3, Anne M Thompson4, Douglas K Martins1, Peter W Bernhardt2, Maria Herrmann1, Lynn Marrie Blumen2, Bettina M Sohst2, Christine Sookhdeo2, Pierre St-Laurent3 and Brittany Widner2, (1)Pennsylvania State University, Department of Meteorology, University Park, PA, United States, (2)Old Dominion University, Department of Ocean, Earth and Atmospheric Sciences, Norfolk, VA, United States, (3)Virginia Institute of Marine Science, Gloucester Point, VA, United States, (4)NASA Goddard Space Flight Center, Greenbelt, MD, United States
CT11A-03
Assessing the Roles of Iron, Macronutrients and Wet deposition in Controlling Phytoplankton Growth in Seasonally Oligotrophic Waters of the Mid-Atlantic Bight (88975)
Peter Sedwick1, Margaret R Mulholland1, Raymond Najjar2, Peter W Bernhardt1, Lynn Marrie Blumen1, Bettina M Sohst1, Christine Sookhdeo1 and Brittany Widner3, (1)Old Dominion University, Department of Ocean, Earth and Atmospheric Sciences, Norfolk, VA, United States, (2)The Pennsylvania State University, Meteorology and Atmospheric Science, University Park, PA, United States, (3)Old Dominion University, Ocean, Earth and Atmospheric Sciences, Norfolk, VA, United States
CT11A-04
Tracing anthropogenic aerosol Fe sources in the North Atlantic Ocean using dissolved Fe isotope ratios (88073)
Tim M Conway, University of South Florida, Rachel Shelley, LEMAR/UBO, Plouzané, France; Florida State University, Department of Earth, Ocean, and Atmospheric Science, Tallahassee, FL, United States, Ana M Aguilar-Islas, University of Arkansas, Fayetteville, AR, United States, William M Landing, Florida State University, Earth, Ocean, and Atmospheric Science, Tallahassee, FL, United States, Natalie M Mahowald, Cornell University, Department of Earth and Atmospheric Sciences, Ithaca, NY, United States and Seth John, University of South Carolina, Columbia, SC, United States; University of Southern California, Earth Sciences, Los Angeles, CA, United States
CT11A-05
Isotopic accounts of mineral dust deposition in the northwestern subtropical Atlantic from seasons to recent millennia (88266)
Christopher T Hayes1, David McGee2, Edward A Boyle1, Sujoy Mukhopadhyay3 and Adam C Maloof4, (1)Massachusetts Institute of Technology, Cambridge, MA, United States, (2)Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States, (3)University of California Davis, Department of Earth and Planetary Sciences, Davis, CA, United States, (4)Princeton University, Department of Geosciences, Princeton, NJ, United States
CT11A-06
Modern Dust Deposition and Dissolved Iron Residence Times in the Eastern Tropical Pacific Ocean (88491)
Sebastian M. Vivancos1,2, Robert F Anderson1,2, Frank J Pavia1,2, Martin Q Fleisher1, Yanbin Lu3, Pu Zhang3, Hai Cheng4,5 and R. Lawrence Edwards6, (1)Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States, (2)Department of Earth and Environmental Sciences, Columbia University, New York, NY, United States, (3)University of Minnesota, Department of Earth Sciences, Minneapolis, MN, United States, (4)University of Minnesota, Department of Earth and Environmental Sciences, Minneapolis, MN, United States, (5)Institute of Global Environmental Change, Xi'an Jiaotong University, Xi’an, China, (6)Department of Earth Sciences, University of Minnesota, Minneapolis, MN, United States
CT11A-07
Estimation of Trace Element Atmospheric Deposition Fluxes to the Atlantic Ocean (> 40°N) During Spring 2014 (GEOVIDE, GEOTRACES GA01) (88600)
Rachel Shelley1, Montserrat Roca-Marti2, Maxi Castrillejo3, Pere Masque2,4 and Geraldine Sarthou5, (1)LEMAR/UBO, Brest, France, (2)Universitat Autònoma de Barcelona, Física and Institut de Ciència i Tecnologia Ambientals, Barcelona, Spain, (3)Universitat Autònoma de Barcelona, Department of Physics and Institut de Ciència i Tecnologia Ambientals, Barcelona, Spain, (4)Edith Cowan University, School of Natural Sciences, Joondalup, Australia, (5)LEMAR UMR 6539 CNRS UBO IRD IFREMER, IUEM, Plouzané, France
CT11A-08
Dissolved Al in the A16S CLIVAR Repeat Hydrography Section and Its Implication for Aerosol Deposition in the South Atlantic (86991)
Chris I Measures1, Mariko Hatta1, William M Landing2 and Rachel Shelley3, (1)University of Hawaii at Manoa, Oceanography, Honolulu, HI, United States, (2)Florida State University, Earth, Ocean, and Atmospheric Science, Tallahassee, FL, United States, (3)Laboratoire des sciences de l'Environnement MARin, Technopole Brest-Iroise, Plouzane, France
See more of: Chemical Tracers, DOM and Trace Metals