Associate Professor Director of Graduate Studies I am a chemical oceanographer with broad interests in the cycling of trace elements in the ocean. Trace elements are present in small quantities but exert tremendous influence on the capacity of the surface ocean to support life. For example, much of the primary production in the ocean is limited by the availability of the micronutrient iron. Much of the work done by members of my research group is focused on understanding how iron enters the marine environment. I also serve as the Director of Graduate Studies for the department. I am available to answer questions about our graduate degree programs and help prospective students navigate the application process. Education B.S. Lehigh Univeristy 2001 Ph.D. Florida State University 2008 Research Labs: Buck Lab Research Areas: Chemical Oceanography Biogeochemistry Climate Change Research Interests: Aspects of environmental chemistry, chemical oceanography, and atmospheric chemistry including:(1) The transport of biologically important elements to oceans and estuaries via aerosols (2) The processes controlling aerosol elemental solubility and metal speciation (3) The fate of aerosol derived trace elements and nutrients in aquatic and marine systems(4) The distribution of dissolved and particulate trace metals in marine systems Current Projects Linking size distribution, solubility and deposition flux of aerosol trace elements: a North Atlantic time-series study Hawaii Aerosol Time-Series (HATS): Quantifying Marine Dust Deposition and Composition in an Oligotrophic Gyre US GEOTRACES GP17-OCE and GP17-ANT: Atmospheric Deposition and Aerosol Fractional Solubility in Remote Ocean Regions Previous Projects Hydrology of the vegetation on vegetation: Comparison and scaling of rainfall interception and solute alteration by common arboreal epiphytes NSF FSML: Acquisition of a Raman Microscope at the Skidaway Institute of Oceanography NSF Ocean Section - Chemical Oceanography. Collaborative Research: US GEOTRACES PMT: Quantification of Atmospheric Deposition and Trace Element Fractional Solubility NSF ASSP. Collaborative Research: Defining the atmospheric deposition of trace elements into the Arctic Ocean-Ice ecosystem during the year-long MOSAiC ice drift U.S.-Brazil Planning visit: Facilitating collaborative research on the Southern Brazilian Continental Shelf. GEOTRACES Arctic Section: Collection and analysis of atmospheric deposition GEOTRACES Pacific Section: Collection and analysis of atmospheric deposition Labs (via personnel): Michael Sheridan Charlotte Kollman Selected Publications Bunnell, Z., M. Sieber, D. Hamilton, C. MarsayP, C.S. Buck, W.M. Landing, S. John, T. Conway. 2025. The influence of natural, anthropogenic, and wildfire sources on iron and zinc aerosols delivered to the North Pacific Ocean. Geophysical Research Letters, doi: 10.1029/2024GL113877Ohnemus, D., C. KollmanG, C. Marsay, M. Ricci, C.S. Buck. 2025. The Hawaii Dust Regime: Patterns and Variability in Aerosol Mineral Dust from MERRA-2 at Station ALOHA and the Hawaii Aerosol Time-Series. JGR – Atmospheres., doi: 10.1029/2024JD041860.Raffai, A., S.G. Gotsch, A.F.P. MooreP, C.S. Buck, J. Van Stan II. 2025. Evaporation and condensation dynamics within saturated epiphyte communities in a Quercus virginiana forest (coastal Georgia, USA). Agricultural and Forest Meteorology. doi: 10.1016/j.agrformet.2024.110329.Buck, C.S., S. Fietz, D. Hamilton, T. Ho, M.M.G. Perron, R.U. Shelley. 2024. GEOTRACES: Fifteen years of progress in marine aerosol research. Invited submission to Oceanography. doi: 10.5670/oceanog.2024.409 Marsay, C.M.P, W.M. Landing, D. UmsteadG, C.P. Till, R. Freiberger, J.N. Fitzsimmons, N.T. Lanning, A.M. Shiller, M. Hatta, R. Chmiel, M. Saito, C.S. Buck. 2022. Does sea-spray aerosol contribute significantly to aerosol trace element loading? A case study from the U.S. GEOTRACES Pacific Meridional Transect (GP15). Global Biogeochemical Cycles, doi: 10.1029/2022GB007416. Marsay, C.M.P, D. Kadko, W.M. Landing, C.S. Buck. 2022. Aerosol trace element concentrations and bulk deposition fluxes during the US GEOTRACES GP15 Pacific Meridional Transect. Global Biogeochemical Cycles. doi: 10.1029/2021GB007122 Kadko, D., W.M. Landing, C.S Buck. 2020. Quantifying Atmospheric Trace Element Deposition over the Ocean on a Global Scale with Satellite rainfall products. Geophysical Research Letters, 47, e2019GL086357. doi: 10.1029/2019GL086357. Buck, C.S., A. Aguilar-Islas, C. Marsay*, D. Kadko, W.M. Landing. 2019. Trace element concentrations, elemental ratios, and enrichment factors observed in aerosol samples collected during the US GEOTRACES eastern Pacific Ocean transect (GP16). Chemical Geology, 511, 212-224, doi: 10.1016/j.chemgeo.2019.01.002 Marsay, C., D. Kadko, W. Landing, B. Summers, P. Morton, C.S. Buck. 2018. Concentrations, provenance and deposition rates of aerosol trace elements during US GEOTRACES Arctic cruise GN01. Chemical Geology, 502, doi: 10.1016/j.chemgeo.2018.06.007. Marsay, C., A. Aguilar-Islas, J. Fitzsimmons, M. Hatta, L. Jensen, S. John, D. Kadko, W. Landing, N. Lanning, P. Morton, A. Pasqualini, S. Rauschenberg, R.M. Sherrell, A. Shiller, B. Twining, L. Whitmore, R. Zhang, C.S. Buck. 2018. Dissolved and particulate trace metals in late summer Arctic melt ponds. Marine Chemistry, 204, 70-85, doi: 10.1016/j.marchem.2018.06.002 Buck CS, Hammerschmidt CR, Bowman KL, Gill GA, Landing WM. 2015. Flux of Total Mercury and Methylmercury to the Northern Gulf of Mexico from U.S. Estuaries. Environmental Science & Technology. 49(24):13992-13999. DOI Google Scholar BibTex XML Buck CS, Landing WM, Resing J. 2013. Pacific Ocean aerosols: Deposition and solubility of iron, aluminum, and other trace elements. Marine Chemistry. 157:117-130. DOI Google Scholar BibTex XML Morton PL, Landing WM, Hsu S-C, Milne A, Aguilar-Islas AM, Baker AR, Bowie AR, Buck CS, Gao Y, Gichuki S. 2013. Methods for the sampling and analysis of marine aerosols: results from the 2008 GEOTRACES aerosol intercalibration experiment. Limnology and Oceanography: Methods. 11:62-78. DOI Google Scholar BibTex XML Buck CS, Paytan A. 2012. Evaluation of commonly used filter substrates for the measurement of aerosol trace element solubility. Limnology and Oceanography: Methods. 10:790-806. DOI Google Scholar BibTex XML Buck CS, Landing WM, Resing JA. 2010. Particle size and aerosol iron solubility: A high-resolution analysis of Atlantic aerosols. Marine Chemistry. 120(1-4):14-24. DOI Google Scholar BibTex XML Buck CS, Landing WM, Resing JA, Measures CI. 2010. The solubility and deposition of aerosol Fe and other trace elements in the North Atlantic Ocean: Observations from the A16N CLIVAR/CO2 repeat hydrography section. Marine Chemistry. 120(1-4):57-70. DOI Google Scholar BibTex XML Buck CS, Landing WM, Resing JA, Lebon GT. 2006. Aerosol iron and aluminum solubility in the northwest Pacific Ocean: Results from the 2002 IOC cruise. Geochemistry, Geophysics, Geosystems. 7(4):n/a-n/a. DOI Google Scholar BibTex XML Courses Regularly Taught MARS 1011E
