I am currently an Assistant Professor in the School for the Environment at the University of Massachusetts - Boston. I also maintain positions as a Guest Investigator at the Woods Hole Oceanographic Institution (WHOI) and as an oceanography faculty member at the Sea Education Association. I completed my Ph.D. in Meteorology and Physical Oceanography at the Rosenstiel School of Marine, Atmospheric, and Earth Science at the University of Miami in 2020. After completing my Ph.D., I held a position as a postdoctoral investigator at the Woods Hole Oceanographic Institution (WHOI) from 2021-2023.
For my Ph.D. work, I conducted research as part of the NSF-supported Overturning in the Subpolar North Atlantic Program (OSNAP) which is a multinational project to examine changes in the Atlantic Meridional Overturning Circulation through the first continuous eulerian mooring array across the entire northern North Atlantic. In February 2019, my first co-authored paper on this research was published in Science and reported on by the nationwide media. I also received a University of Miami award in May 2019 for my presentation on my portion of this OSNAP research. My PhD thesis focused on reporting the most accurate results of currents and overturning in the Iceland Basin, including the first time-dependent examination of the East Reykjanes Ridge Current. Perhaps most notably, our research also discovered that an unexpectedly significant amount of the Atlantic Meridional Overturning Circulation - nearly 50% - occurs in the eastern North Atlantic subpolar gyre. As a postdoc at WHOI, I continued my research with the OSNAP program by focusing on the lower limb of the Atlantic Meridional Overturning Circulation (AMOC) - the Deep Western Boundary Current - where we have found a startling decrease in transport. I am continuing this research as an Assistant Professor at Umass-Boston. For more information about the AMOC, check out this interactive article from the New York Times. |
Publications
Koman, G., A. S. Bower, N. P. Holliday, H. H. Furey, Y. Fu & T. C. Bilo (revised and resubmitted) The decreasing transport of the Deep Western Boundary Current in the subpolar Atlantic, Nature Geoscience. Preprint: https://www.researchsquare.com/article/rs-3232952/v1
Koman, G., M. C. Curran, A. L. Ramsey, A. S. Bower & H. H. Furey (2023) Listening to the ocean: using data sonification to teach students about the role of ocean circulation in climate change, Science Activities. https://doi.org/10.1080/00368121.2023.2236047
Koman, G., W. E. Johns, A. Houk, L. Houpert & F. Li (2022) Circulation and overturning in the eastern North Atlantic subpolar gyre, Progress in Oceanography. https://doi.org/10.1016/j.pocean.2022.102884
Koman, G., W. E. Johns & A. Houk (2020) Transport and Evolution of the East Reykjanes Ridge Current, Journal of Geophysical Research: Oceans. https://doi.org/10.1029/2020JC016377
Lozier, M. S., F. Li, [et al, including G. Koman] (2019) A sea change in our view of overturning in the subpolar North Atlantic. Science, 363(6426), 516 LP-521. https://doi.org/10.1126/science.aau6592
Koman, G., (2001) The intensity and direction of geostrophic flow between Bermuda and the Bahamas and its relationship to salinity. Sea Education Association archives.
Koman, G., M. C. Curran, A. L. Ramsey, A. S. Bower & H. H. Furey (2023) Listening to the ocean: using data sonification to teach students about the role of ocean circulation in climate change, Science Activities. https://doi.org/10.1080/00368121.2023.2236047
Koman, G., W. E. Johns, A. Houk, L. Houpert & F. Li (2022) Circulation and overturning in the eastern North Atlantic subpolar gyre, Progress in Oceanography. https://doi.org/10.1016/j.pocean.2022.102884
Koman, G., W. E. Johns & A. Houk (2020) Transport and Evolution of the East Reykjanes Ridge Current, Journal of Geophysical Research: Oceans. https://doi.org/10.1029/2020JC016377
Lozier, M. S., F. Li, [et al, including G. Koman] (2019) A sea change in our view of overturning in the subpolar North Atlantic. Science, 363(6426), 516 LP-521. https://doi.org/10.1126/science.aau6592
Koman, G., (2001) The intensity and direction of geostrophic flow between Bermuda and the Bahamas and its relationship to salinity. Sea Education Association archives.
Conference Presentations
Koman, G., A. S. Bower, N. P. Holliday, H.H. Furey & Y. Fu (2023, July). Reconciling a decreasing Deep Western Boundary Current with a steady AMOC. Poster presentation, Meeting AMOC Observation Needs in a Changing Climate, Hamburg, Germany
Koman, G., A. S. Bower, H. H. Furey & N. P. Holliday (2022, December) The decreasing transport of the Deep Western Boundary Current. Oral presentation, American Geosciences Union Fall Meeting, Chicago, Illinois, U.S.A.
Koman, G., A. S. Bower, H. H. Furey & N. P. Holliday (2022, May) The decreasing transport of the Deep Western Boundary Current. Oral presentation, European Geosciences Union Annual Meeting, Vienna, Austria.
Koman, G. (2021, December). Ocean Observatories Initiative in the Overturning the Subpolar North Atlantic Program. Lightning presentation at OOI Facility Board Town Hall, American Geosciences Union Fall Meeting, New Orleans, Louisiana, U.S.A.
Koman, G., W. E. Johns, A. Houk, L. Houpert & F. Li (2021, December). Overturning in the Eastern Subpolar Gyre. Lightning presentation, American Geosciences Union Fall Meeting, New Orleans, Louisiana, U.S.A.
Koman, G., W. E. Johns & A. Houk (2020, February). Transport, Evolution and Water Mass Properties of the East Reykjanes Ridge Current. Poster presentation at the Ocean Sciences Meeting, San Diego, California, U.S.A.
Koman, G., W. E. Johns, A. Houk, M. F. de Jong & M. Devana (2019, April). Transport, Seasonality and Evolution of the East Reykjanes Ridge Current. Poster presentation at the European Geosciences Union Annual Meeting, Vienna, Austria.
Koman, G. & W. E. Johns, (2018, February). Seasonal Variability of Boundary Currents in the North Atlantic Subpolar Gyre. Poster presentation at the Ocean Sciences Meeting, Portland, Oregon, U.S.A.
Koman, G., W. E. Johns, A. Houk & C. Christiansen (2017, April). Transport and Variability of the East Reykjanes Ridge Current. Poster presentation at the European Geosciences Union Annual Meeting, Vienna, Austria.
Koman, G., A. S. Bower, H. H. Furey & N. P. Holliday (2022, December) The decreasing transport of the Deep Western Boundary Current. Oral presentation, American Geosciences Union Fall Meeting, Chicago, Illinois, U.S.A.
Koman, G., A. S. Bower, H. H. Furey & N. P. Holliday (2022, May) The decreasing transport of the Deep Western Boundary Current. Oral presentation, European Geosciences Union Annual Meeting, Vienna, Austria.
Koman, G. (2021, December). Ocean Observatories Initiative in the Overturning the Subpolar North Atlantic Program. Lightning presentation at OOI Facility Board Town Hall, American Geosciences Union Fall Meeting, New Orleans, Louisiana, U.S.A.
Koman, G., W. E. Johns, A. Houk, L. Houpert & F. Li (2021, December). Overturning in the Eastern Subpolar Gyre. Lightning presentation, American Geosciences Union Fall Meeting, New Orleans, Louisiana, U.S.A.
Koman, G., W. E. Johns & A. Houk (2020, February). Transport, Evolution and Water Mass Properties of the East Reykjanes Ridge Current. Poster presentation at the Ocean Sciences Meeting, San Diego, California, U.S.A.
Koman, G., W. E. Johns, A. Houk, M. F. de Jong & M. Devana (2019, April). Transport, Seasonality and Evolution of the East Reykjanes Ridge Current. Poster presentation at the European Geosciences Union Annual Meeting, Vienna, Austria.
Koman, G. & W. E. Johns, (2018, February). Seasonal Variability of Boundary Currents in the North Atlantic Subpolar Gyre. Poster presentation at the Ocean Sciences Meeting, Portland, Oregon, U.S.A.
Koman, G., W. E. Johns, A. Houk & C. Christiansen (2017, April). Transport and Variability of the East Reykjanes Ridge Current. Poster presentation at the European Geosciences Union Annual Meeting, Vienna, Austria.