Atmospheric Chemistry and Physics Discussions www.atmos-chem-phys-discuss.net 1680-7367 1680-7375 10 2 2010 10.5194/acpd-10-4593-2010 http://www.atmos-chem-phys-discuss.net/10/4593/2010/ http://www.atmos-chem-phys-discuss.net/10/4593/2010/acpd-10-4593-2010.html http://www.atmos-chem-phys-discuss.net/10/4593/2010/acpd-10-4593-2010.pdf 4593 4616 2010-02-15 Atmospheric deposition of mercury and major ions to the Pensacola Bay (Florida) watershed: spatial, seasonal, and inter-annual variability J. M. Caffrey jcaffrey@uwf.edu W. M. Landing S. D. Nolek K. Gosnell S. S. Bagui S. C. Bagui Center for Environmental Diagnostics and Bioremediation University of West Florida, 11000 University Parkway Pensacola, FL 32514, USA Department of Oceanography Florida State University 1015 West Call Street Tallahassee, FL 32306-4320, USA PetroAlgae 1901 S. Harbor City Blvd., Suite 300 Melbourne, FL 32901, USA Department of Computer Science University of West Florida 11000 University Parkway Pensacola, FL 32514, USA Department of Mathematics and Statistics University of West Florida 11000 University Parkway Pensacola, FL 32514, USA Atmospheric deposition was measured at three sites in the Pensacola Bay watershed, Florida, between November 2004 and December 2007. Mercury deposition in the Pensacola Bay watershed was similar to that from nearby Mercury Deposition Network sites along the Northern Gulf of Mexico coast. Mercury deposition during the summer months is higher than other months due to higher concentrations in rainfall throughout the region. Deposition of constituents like H⁺, sulfate, nitrate, ammonium, chloride and sodium, were much higher in Pensacola Bay that at National Atmospheric Deposition Program (NADP) sites. Chloride and sodium fluxes are higher because Pensacola Bay sites are closer to the Gulf of Mexico which is a source of sea salt aerosols. Acid rain constituents, H⁺, sulfate, nitrate and ammonium are most likely higher at Pensacola Bay sites because these sites are much closer to emission sources of these constituents than NADP sites, particularly two Florida NADP sites, FL14 and FL23, which are located in rural counties far from major industrial activities. Chang, M. E., Baumann, K., Bostrom, A., and Russell, A.: PERCH Air Quality Study: an assessment of particulate matter, ozone, and air toxics in Escambia and Santa Rosa Counties, Final Report, Partnership for Community Health and Environmental Research, http://cure.eas.gatech.edu/~chang/perch/, 2007. Dvonch, J. T., Graney, J. R., Marsik, F. J., Keeler, G. J., and Stevens, R. K.: An investigation of source-receptor relationships for mercury in south Florida using event precipitation data, The Science of the Total Environment, 213, 95–108, 1998. Elliott, E. M., Kendall, C., Wankel, S. D., Burns, D. A., Boyer, E. W., Harlin, K., Bain D. J., and Butler, T. J.: Nitrogen isotopes as indicators of NO_x source contributions to atmospheric nitrate deposition across the Midwestern and northeastern United States, Environ. Sci. Technol., 41, 7661–7667, 2007. Engle, M. A., Tate, M. T., Krabbenhoft, D. P., Kolker, A., Olsen, M. L., Edgerton, E. S., DeWild, J. F., and McPherson, A. K.: Characterization and cycling of atmospheric mercury along the central US Gulf Coast, Appl. Geochem., 23, 419–437, 2008. Guentzel, J. L., Landing, W. M., Gill, G. A., and Pollman, C. D.: Atmospheric deposition of mercury in Florida: the FAMS project (1992–1994), Water, Air, Soil Pollut. 80, 393–402, 1995. Keeler, G. J. and Dvonch, J. T.: Chapter 25, Atmospheric mercury: a decade ob observations in the Great lakes, in: Dynamics of mercury pollution on regional and global scales: atmospheric processes and human exposures around the world, edited by: Pirrone, N. and Mahaffey, K. R., Springer, 611–636, 2005. Keeler, G. J., Landis, M. S., Norris, G. A., Christianson, E. M., and Dvonch, J. T.: Sources of mercury wet deposition in Eastern Ohio, USA, Environ. Sci. Technol., 40, 5874–5881, 2006. Landing, W. M., Perry Jr., J. J., Guentzel, J. L., Gill, G. A., and Pollman, C. D.: Relationships between atmospheric deposition of trace elements, major ions and mercury in Florida: The FAMS project (1992–1993), Water, Air, Soil Pollut., 80, 343–352, 1995. Landing, W. M., Caffrey, J. M., Nolek, S. D., and Gosnell, K.: Atmospheric wet deposition of mercury and other trace elements in Pensacola, Florida, Atmos. Chem. Phys. Discuss., 9, 27649–27674, 2009. Landis, M. S., Vette, A. F., and Keeler, G. J.: Atmospheric mercury in the Lake Michigan Basin: Influence of the Chicago/Gary Urban Area, Environ. Sci. Technol., 36, 4508–4517, 2002. Lawson, N. M. and Mason, R. P.: Concentration of mercury, methylmercury, cadmium, lead, arsenic and selenium in the rain and stream water of two contrasting watersheds in western Maryland, Water Res., 35, 4039–4052, 2001. Lin, C.-J. and Pehkonen, S. O.: The chemistry of atmospheric mercury: a review, Atmos. Environ., 33, 2067–2079, 1999. Lindberg, S., Bullock, R., Ebinghaus, R., Engstrom, D., Feng, X., Fitzgerald, W., Pirrone, N., Prestbo, E., and Seigneur, C.: A synthesis of progress and uncertainties in attributing the sources of mercury in deposition, Ambio, 36, 19–32, 2007 Lohse, K. A., Hope, D., Sponsell, R., Allen, J. O., and Grimm, N. B.: Atmospheric deposition of carbon and nutrients across an arid metropolitan area, Sci. Tot. Environ., 402, 95–105, 2008. Lynch, J. A. and Kerchner, M.: The National Atmospheric Deposition Program: 25 years of monitoring in support of science and policy: an ammonia workshop: the state of science and future needs, Environ. Pollut., 135, 343–346, 2005. Mason, R. P., Lawson, N. M., and Sullivan K. A.: The concentration, speciation and sources of mercury in Chesapeake Bay precipitation, Atmos. Environ., 31, 3541–3550, 1997. Mason, R. P., Lawson, N. M., and Sheu, G. R.: Annual and seasonal trends in mercury depoition in Maryland, Atmos. Environ., 34, 1691–1701, 2000. National Atmospheric Deposition Program (NRSP-3)/National Trends Network, NADP Program Office, Illinois State Water Survey, 2204 Griffith Drive, Champaign, IL 61820, 2009. Pacyna, J. M., Munthe, J., Larjava, K., and Pacyna, E. G.: Chapter 3 Mercury emissions from anthropogenic sources: estimates and measurements for Europe, in: Dynamics of mercury pollution on regional and global scales: atmospheric processes and human exposures around the world, edited by: Pirrone, N. and Mahaffey, K. R., Springer, 51–64, 2005 Pirrone, N., Keeler, G. J., and Nriagu, J. O.: Regional differences in worldwide emissions of mercury to the atmosphere, Atmos. Environ., 30, 2981–2987, 1996. Valigura, R. A.: An introduction to the first assessment of nitrogen loads to US estuaries with an atmospheric perspective, in: Nitrogen loading in coastal water bodies: an atmospheric perspective, edited by: Valigura, R. A., Alexander, R. B., Castro, M. S., Meyers, T. P., Paerl, H. W., Stacey, P. E., and Turner, R. E., AGU. Washington, D.C, 1–10, 2001. VanArsdale, A., Weiss, J., Keeler, G., Miller, E., BOulet, G., Brulotte, R., and Poissant, L.: Patterns of mercury deposition and concentration in Northeastern North America (1996–2002), Ecotoxicology, 14, 37–52, 2007. White, E. M., Keeler, G. J., and Landis, M. S.: Spatial variability of mercury wet deposition in Eastern Ohio: Summertime meteorological case study analysis of local source influences, Environ. Sci. Technol., 43, 4946–4953, 2009.