Mark Stephens

ARC APPLIED RESEARCH CENTER | COLLEGE OF ENGINEERING AND COMPUTING

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Research Terms & Keywords

Research Terms

Atmospheric Sciences Oceanography

Keywords

Aerosols Be-7 Marine Chemistry Pb-210 Radioisotopes Radium Radon

Research Projects

Ends

Title

07-2025

GEOTRACES GP-17 Transect: Measurement of 7Be as a Tracer of Upper Ocean Processes GEOTRACES GP-17 Transect: Measurement of 7Be as a Tracer of Upper Ocean Processes

National Science Foundation

10-2024

Collaborative Research: Quantifying the atmospheric flux of bio-active trace elements to the southwestern Indian Ocean Collaborative Research: Quantifying the atmospheric flux of bio-active trace elements to the southwestern Indian Ocean

National Science Foundation

08-2024

Hawaii Aerosol Time-Series (HATS): Quantifying Marine Dust Deposition and Composition in an Oligotrophic Gyre Hawaii Aerosol Time-Series (HATS): Quantifying Marine Dust Deposition and Composition in an Oligotrophic Gyre

University of Georgia

12-2023

Collaborative Research: Constraining the role of chemical transformations on the cycling of mercury at the Arctic Ocean air-sea interface Collaborative Research: Constraining the role of chemical transformations on the cycling of mercury at the Arctic Ocean air-sea interface

National Science Foundation

08-2022

Collaborative Research: Pb-210 and Po-210 as tracers of scavenging and export: GEOTRACES Pacific Meridional Transect Collaborative Research: Pb-210 and Po-210 as tracers of scavenging and export: GEOTRACES Pacific Meridional Transect

National Science Foundation

08-2022

GEOTRACES Pacific Meridional Transect: Measurement of 7Be as a Tracer of Upper Ocean Processes GEOTRACES Pacific Meridional Transect: Measurement of 7Be as a Tracer of Upper Ocean Processes

National Science Foundation

12-2021

Collaborative Research: Defining the atmospheric deposition of trace elements into the Arctic ocean-ice ecosystem during the year-long MOSAiC ice drift Collaborative Research: Defining the atmospheric deposition of trace elements into the Arctic ocean-ice ecosystem during the year-long MOSAiC ice drift

National Science Foundation

Degrees

PhD, Marine & Atmospheric Chemistry

University of Miami ▪ 1996

Publications

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Quay, P., & Stephens, M. (2025). Regional patterns of organic matter export rates along the GEOTRACES Pacific meridional transect GP15. Global Biogeochemical Cycles, 39, e2024GB008277. https://doi.org/10.1029/2024GB008277

He, Y., Inman, H., Kadko, D. C., Stephens, M. P., Hammond, D. E., Landing, W. M., Mason, R. P. (2025). Elevated methylmercury in Arctic rain and aerosol linked to air-sea exchange of dimethylmercury, Science Advances.11,eadr3805(2025). https://doi.org/10.1126/sciadv.adr3805

Stephens, M. P., Marsay, C. M., Schneebeli, M., Landing, W. M., Buck, C. S., & Geibert, W. (2024). Aerosol deposition and snow accumulation processes from Beryllium-7 measurements in the Central Arctic Ocean: Results from the MOSAiC Expedition. Journal of Geophysical Research: Oceans, 129. https://doi.org/10.1029/2023JC020044

Cochran, J. K., Wei, Z., Horowitz, E., Fitzgerald, P., Heilbrun, C., Stephens, M., Lam, P. J., Le Roy, E., Charette, M. (2024). 210Po and 210Pb distributions along the GEOTRACES Pacific Meridional Transect (GP15): Tracers of scavenging and particulate organic carbon (POC) export. Global Biogeochemical Cycles, 38, e2024GB008243. https://doi.org/10.1029/2024GB008243

Moriyasu, R., Bolster, K. M., Hardisty, D. S., Kadko, D. C., Stephens, M. P., & Moffett, J. W. (2023). Meridional survey of the central Pacific reveals iodide accumulation in equatorial surface waters and benthic sources in the abyssal plain. Global Biogeochemical Cycles, 37, e2021GB007300. https://doi.org/10.1029/2021GB007300

Schulz, K., Kadko, D., Mohrholz, V., Stephens, M., & Fer, I. (2023). Winter vertical diffusion rates in the Arctic Ocean, estimated from ⁷Be measurements and dissipation rate profiles. Journal of Geophysical Research: Oceans, 128, e2022JC019197. https://doi.org/10.1029/2022JC019197

Angelopoulos M, Damm E, Simões Pereira P, Abrahamsson K, Bauch D, Bowman J, Castellani G, Creamean J, Divine DV, Dumitrascu A, Fons SW, Granskog MA, Kolabutin N, Krumpen T, Marsay C, Nicolaus M, Oggier M, Rinke A, Sachs T, Shimanchuk E, Stefels J, Stephens M, Ulfsbo A, Verdugo J, Wang L, Zhan L and Haas C (2022) Deciphering the Properties of Different Arctic Ice Types During the Growth Phase of MOSAiC: Implications for Future Studies on Gas Pathways. Froniers.in Earth Science, 10:864523. https://doi.org/10.3389/feart.2022.864523

Wei, Z., Cochran, J. K., Horowitz, E., Fitzgerald, P., Heilbrun, C., Kadko, D., et al. (2022). ²¹⁰Pb and ⁷Be as coupled flux and source tracers for aerosols in the Pacific Ocean. Global Biogeochemical Cycles, 36, e2022GB007378. https://doi.org/10.1029/2022GB007378

Stephens, M. P., and D. C. Kadko (1997), Glacial-Holocene calcium carbonate dissolution at the central equatorial Pacific seafloor, Paleoceanography, 12(6), 797–804, doi:10.1029/97PA02271.

Stephens, M. P., Kadko, D. C., Smith, C. R., Latasa, M. (1997) Chlorophyll-a and pheopigments as tracers of labile organic carbon at the central equatorial Pacific seafloor. Geochimica et Cosmochimica Acta, 61(21), 4605-4619. https://doi.org/10.1016/S0016-7037(97)00358-X

Stephens, M. P., G. Samuels, D. B. Olson, R. A. Fine, and T. Takahashi (1995), Sea-air flux of CO₂ in the North Pacific using shipboard and satellite data, J. Geophys. Res., 100(C7), 13571–13583, doi:10.1029/95JC00901