My Google Scholar Profile


  • Isotopic Fingerprinting and Radiocarbon Analyses
  • Trace Metal and Greenhouse Gas Dynamics
  • Marine Biogeochemistry
  • Ocean and Groundwater Chemistry

I investigate biogeochemical processes in environments ranging from marine systems to hyper eutrophic freshwater lakes, that are both uninfluenced, as well as heavily influenced (e.g., oil spills) by anthropogenic activities. My research includes understanding the dynamics of greenhouse gases (methane, carbon dioxides, etc), trace elements, organic carbon, nutrients, and chemical pollutants (e.g., poly-aromatic hydrocarbons). I am also interested in developing new advanced techniques for chemical analysis and finding new proxies for biogeochemical processes, as I help to advance our knowledge of coastal processes and how they are influenced by climate change.


  • 2016-2017, Postdoctoral Research Associate, Division of Marine Science, University of Sothern Mississippi, Stennis Space Center, MS
  • 2014-2016, Postdoctoral Research Associate, EPSCoR, University of Vermont, Burlington, VT
  • 2014, Ph.D. Marine Science, University of Sothern Mississippi, Stennis Space Center, MS
  • 2004, M.S. Oceanography, School of Earth and Environmental Sciences, Seoul National University  


  • 2017-present, Research Scientist, Dept of Earth & Environmental Sciences, University of Rochester, Rochester, NY.


  1. Joung, D.-J., Ruppel, C. D., Southon, J., & Kessler, J. D. (2022). Elevated levels of radiocarbon in methane dissolved in seawater reveal likely local contamination from nuclear powered vessels. Science of The Total Environment, 806(2), 150456.
  2. Joung, D.-J., Leonte, M., Valentine, D. L., Sparrow, K., Weber, T., & Kessler, J. D. (2020). Radiocarbon in marine methane reveals patchy impact of seeps on surface waters. Geophysical Research Letters, 47, e2020GL089516.
  3. Joung, D.-J., M. Leonte, and J. D. Kessler (2019). Methane sources in the waters of Lake Michigan and Lake Superior as revealed by natural radiocarbon measurements. Geophysical Research Letters46, 5436–5444.
  4. Joung, D.-J., L. Guo, and A. M. Shiller (2019). Role of the Atchafalaya River Basin in regulating export fluxes of dissolved organic carbon, nutrients, and trace elements to the Louisiana Shelf. Journal of Hydrology, 2, 100018.
  5. Sanial, V., A. Shiller, D.-J. Joung, P. Ho (2019). Extent of Mississippi River water in the Mississippi Bight and Louisiana Shelf based on water isotopes. Estuarine, Coastal, and Shelf Science
  6. Greer, A.T., A.M. Shiller, E.E. Hofmann, J.D. Wiggert, S.J. Warner, S.M. Parra, C. Pan, J.W. Book, D. Joung, S. Dykstra, J.W. Krause, B. Dzwonkowski, I.M. Soto, M.K. Cambazoglu, A.L. Deary, C. Briseño-Avena, A.D. Boyette, J.A. Kastler, V. Sanial, L. Hode, U. Nwankwo, L.M. Chiaverano, S.J. O’Brien, P.J. Fitzpatrick, Y.H. Lau, M.S. Dinniman, K.M. Martin, P. Ho, A.K. Mojzis, S.D. Howden, F.J. Hernandez, I. Church, T.N. Miles, S. Sponaugle, J.N. Moum, R.A. Arnone, R.K. Cowen, G.A. Jacobs, O. Schofield, and W.M. Graham (2018). Functioning of coastal river-dominated ecosystems and implications for oil spill response: From observations to mechanisms and models. Oceanography, 31(3),
  7. Dzwonkowski, B., Greer, A.T., Briseño-Avena, C., Krause, J.W., Soto, I.M., Hernandez, F.J., Deary, A.L., Wiggert, J.D., Joung, D., Fitzpatrick, P.J. and O’Brien, S.J. (2017). Estuarine influence on biogeochemical properties of the Alabama shelf during the fall season. Continental Shelf Research, 140, 96-109.
  8. Shiller, A.M., E.W. Chan, D.-J. Joung, M.C. Redmond, J.D. Kessler (2017). Light rare earth element depletion during Deepwater Horizon blowout methanotrophy. Nature: Scientific Reports, 7, 10389.
  9. Joung, D.-J., M. Leduc, B.Ramcharitar, Y. Xu, P.D.F. Isles, J.D. Stockwell, G. Druschel, T. Manley, A.W. Schroth (2017). Winter weather and lake-watershed physical configuration drive phosphorus, iron, and manganese dynamics in water and sediment of ice-covered lakes. Limnology and Oceanography, 62(4), 1620-1635.
  10. Joung, D.-J. and A. M. Shiller (2016). Temporal and spatial variations of dissolved and colloidal trace elements in Louisiana Shelf waters. Marine Chemistry, 181, 25-43.
  11. Chan, E, J. Kessler, A. Shiller, D.-J. Joung, F. Colombo (2016). Aqueous mesocosm techniques enabling the real-time measurement of the chemical and isotopic kinetics of dissolved methane and carbon dioxide. Environmental Science and Technology, 50(6), 3039-3046.
  12. Joung, D.-J. and A. M. Shiller (2014). Dissolved barium behavior in Louisiana Shelf waters affected by the Mississippi/Atchafalaya River mixing zone. Geochimica et Cosmochimica Acta, 141: 303–313. 
  13. Crespo-Medina, M., A. Vossmeyer, K. S. Hunter, C. D. Meile, A.-R. Diercks, V. L. Asper, J. P. Chanton, P. Tavormina, V. J. Orphan, A. M. Shiller, D.-J. Joung, C. Mann, J. J. Battles, R. M. W. Amon, J. P. Montoya, T. A. Villareal, A. M. Wood, and S. B. Joye. (2014). The rise and fall of methanotrophy following a deepwater oil-well blowout. Nature: Geoscience, 7(6), 423–427.
  14. Joung, D.-J. and A. M. Shiller (2013). Trace element distributions in the water column near the Deepwater Horizon well blowout. Environmental Science and Technology, 47(5), 2161-2168.
  15. Shiller, A. M. and D.-J. Joung (2012). Nutrient depletion as a proxy for microbial growth in Deepwater Horizon subsurface oil/gas plumes. Environmental Research Letters, 7(4), 045301.
  16. Wade, T. L., Sweet, Stephen T.; Sericano, José L.; Guinasso, Norman L., Jr.; Diercks, Arne-R.; Highsmith, Raymond C.; Asper, Vernon L.; Joung, DongJoo; Shiller, Alan M.; Lohrenz, Steven E.; Joye, Samantha B. (2011). Analyses of Water Samples From the Deepwater Horizon Oil Spill: Documentation of the Subsurface Plume, in Monitoring and Modeling the Deepwater Horizon Oil Spill: A Record-Breaking Enterprise Geophysical Monograph Series, Issn: 0065-8448; Isbn: 978-0-87590-485-6, Vol. 195, pp. 77-82.
  17. Diercks, A.-R.; Highsmith, R.C.; Asper, V.L.; Joung, D.J.; Zhou, Z.; Guo, L.; Shiller, A.M.; Joye, S.B.; Teske, A.P.; Guinasso, N.; Wade, T.L.; Lohrenz, S.E. (2010). Characterization of subsurface polycyclic aromatic hydrocarbons at the Deepwater Horizon site, Geophys. Res. Lett., 37, L20602,
  18. Diercks AR, Asper VL, Highsmith R, Woolsey M, Lohrenz S, McLetchie K, Gossett A, Lowe M, Joung D, McKay L, Joye S. NIUST-Deepwater horizon oil spill response cruise. InOCEANS 2010 2010 Sep 20 (pp. 1-7). IEEE. 
  19. Kim, G., Y.W. Lee, D.J. Joung, K.R. Kim, and K. Kim (2006). Real-time monitoring of nutrient concentrations and red-tide outbreaks in the southern sea of Korea. Geophysical Research Letters, 33(13), L13607.


  • Aug. 2010 ~ Dec. 2010: Teaching Assistant in Marine Science (for graduate)
  • Aug. 2005 ~ Aug. 2005: International Summer School on Submarine Groundwater Discharge, Seoul National University
  • Sep. 2003 ~ Dec. 2003: Teaching Assistant in Oceanography (for undergraduate)


  • Miranda Madrid (University of Notre Dame)
  • Nicole Elizabeth Mucci (University of Vermont)
  • Meagan Leduc (Lyndon State College)
  • Benjamin Ramcharitar (Middlebury College)
  • Kelsey Colbert (University of Vermont)


  • April 2015: Pilot Research Project, EPSCoR NSF: “A comparative study of internal nutrient loading in two eutrophic systems with varying degrees of anoxia” ($10,000) 
  • May 2014: Outstanding Graduate, Department of Marine Science, USM
  • March 2014: Top abstract from Department of Marine Science, Graduate Student Research Symposium, USM
  • March 2013: Outstanding Doctorate student, College of Science and Technology, USM
  • June 2012 - May 2013: Marine Science Scholar Fellowship, Department of Marine Science, USM
  • May 17 - 29, 2005: Short term study abroad - Geosciences Advisory Unit, Southampton Oceanography Center (now NOC), UK (Analysis of radioisotopes using ICP-MS)


  • May 26 ~ June 9, 2019           US Pacific Margin, R/V Rachel Carson
  • Aug. 25 ~ Sept. 6, 2017          US Atlantic Margin, R/V Hugh Sharp
  • June 13 ~ June 22, 2017        Great Lakes, R/V Blue Heron
  • Jul. 6, 2014 ~ Jul. 12, 2014     US Atlantic Ocean, near Hudson Canyon, R/V Endeavor
  • Aug. 6, 2012 ~ Aug. 14, 2012     Gulf of Mexico, Deepwater Horizon oil spill site, R/V Cape Hatteras
  • Oct. 20, 2011 ~ Oct. 31, 2011     Gulf of Mexico, Deepwater Horizon oil spill site 
  • Oct. 10, 2010 ~ Oct. 21, 2010     Gulf of Mexico, Deepwater Horizon oil spill site 
  • May 25, 2010 ~ Jun. 03, 2010     Gulf of Mexico, Deepwater Horizon oil spill site 
  • Apr. 30, 2010 ~ May 09, 2010     Gulf of Mexico, Deepwater Horizon oil spill site 
  • Mar. 10, 2010 ~ Mar. 22, 2010    Gulf of Mexico, Gulf Carbon 
  • Jun. 28, 2009 ~ Jul. 04, 2009     Gulf of Mexico, Magmix-3
  • Oct. 31, 2008 ~ Nov. 08, 2008     Gulf of Mexico, Magmix-2 
  • May 01, 2008 ~ May 8, 2008      Gulf of Mexico, Magmix-1 
  • Oct. 7, 2005 ~ Oct. 28, 2005      Joint cruise between Korea and Russia in the East Sea 
  • Mar. 20, 2005 ~ Apr. 10, 2005      Joint cruise between Korea and Russia in the East Sea 
  • Jun. 10, 2004 ~ Jun. 19, 2004       Teaching Assistant of On-board experiments in the School of Earth and Environmental Sciences, Seoul National University
  • May 05, 2004 ~ May 30, 2004       Joint cruise between Korea and Russia in the East Sea 

Current Member: No

Order Number: 1