Gemma O'Connor

Postdoctoral Scientist at the University of Washington

  1. O’Connor, G.K.,Nakayama, Y., Steig, E.J., Armour, K.C., Thompson, L., Hyogo, S., Berdahl, M., Shimada, T. Enhanced West Antarctic ice loss triggered by polynya response to meridional winds. In press at Nature Geoscience.
  2. Schneider, D.P., Yin, Z., O’Connor, G.K., Blanchard-Wrigglesworth, E., Cast, Z. I., Datta, R., Espinosa, Z. Increased Antarctic snowfall mitigates sea level rise less than projected due to meltwater influence on sea surface temperature. In review at PNAS. https://doi.org/10.22541/essoar.172411232.25724214/v2
  3. Dalaiden, Q., Abram, N.J., Goosse, H., Holland, P.R., O’Connor, G.K., Topal, D. (2024). Tropical and anthropogenic drivers shape multi-decadal atmospheric circulation variability over West Antarctica. Geophysical Research Letters, 51(16), e2024GL109137, https://doi.org/10.1029/2024GL109137
  4. Fogt, R.L., Dalaiden, Q., O’Connor, G.K. (2024). A comparison of South Pacific Antarctic sea ice and atmospheric circulation reconstructions since 1900. Climate of the Past, 20(1), 53-76. https://doi.org/10.5194/cp-20-53-2024
  5. O’Connor, G.K., Holland, P.R., Steig, E.J., Dutrieux, P., Hakim, G.J. (2023). Characteristics and rarity of the strong 1940s westerly wind event over the Amundsen Sea, West Antarctica. The Cryosphere, 17(10), 4399-4420. https://doi.org/10.5194/tc-17-4399-2023
  6. Stevenson, S., Cobb, K.M., Merrifield, M., Powell, B., Sanchez, S., Nusbaumer, J., O’Connor, G.K., Atwood, A. (2023). Contrasting central equatorial Pacific oxygen isotopic signatures of the 2014/15 and 2015/16 El Nino events. Geophysical Research Letters, 50(21), e2023GL104454. https://doi.org/10.1029/2023GL104454
  7. Hoffman, A.O., Holschuh, N., Mueller, M., Paden, J., Muto, A., Ariho, G., Brigham, C., Christian, J., Davidge, L., Heitmann, E., Hills, B., Horlings, A., Morey, S., O’Connor, G.K., Fudge, T.J., Steig E. J., Christianson, K. (2023) Scars of tectonism promote ice-sheet nucleation from Hercules Dome into West Antarctica. Nature Geoscience, 16, 1005-1013. https://doi.org/10.1038/s41561-023-01265-5
  8. Holland, P.R., O’Connor, G.K., Bracegirdle, T.J., Dutrieux, P., Naughten, K.A., Steig, E.J., Schneider, D.P., Jenkins, A., Smith, J.A. (2022). Anthropogenic and internal drivers of wind changes over the Amundsen Sea, West Antarctica, during the 20th and 21st centuries. The Cryosphere, 16(12), 5085-5105. https://doi.org/10.5194/tc-16-5085-2022
  9. Fudge, T.J., Hills, B., Horlings, A.N., Holschuh, N., Christian, J.E., Davidge, L., Hoffman, A., O’Connor, G.K., Christianson, K., Steig, E.J. (2022). A site for deep ice coring at West Hercules Dome: results from ground-based geophysics and modeling. Journal of Glaciology, 69(275), 538-550. https://doi.org/10.1017/jog.2022.80
  10. Hills, B.H., Christianson, K., Hoffman, A., Fudge, T.J., Holschuh, N., Kahle, E.C., Conway, H., Christian, J., Horlings, A., O’Connor, G.K., Steig, E.J. (2022). Geophysics and thermodynamics at South Pole Lake indicate stability and a regionally thawed bed. Geophysical Research Letters, 49, e2021GL096218. https://doi.org/10.1029/2021GL096218
  11. Hitt, N.T., Sayani, H.R., Atwood, A.R., Grothe, P.R., Maupin, C., O’Connor, G.K., Walter, R., Gebregiorgis, D., Hardt, M., Lu, Y., Edwards, R.L., Cheng, H., Cobb, K.M. (2022). Central equatorial Pacific warming and freshening in the 20th century: Insights from a coral ensemble approach. Geophysical Research Letters, 49, e2021GL094051. https://doi.org/10.1029/2021GL094051
  12. O’Connor, G.K., Steig, E.J., Hakim, G.J. (2021). Strengthening Southern Hemisphere westerlies and Amundsen Sea Low deepening over the 20th century revealed by proxy-data assimilation. Geophysical Research Letters, 48, e2021GL095999. https://doi.org/10.1029/2021GL095999
  13. O’Connor, G.K., Cobb, K.M., Sayani, H.R., Atwood, A.R., Grothe, P.R., Stevenson, S., Baum, J., Chen, T., Claar, C., Hitt, N., Lynch-Stieglitz, J., Mortlock, R., Schmidt, G., Walter, R. (2021). Coral oxygen isotopic records capture the 2015/16 El Niño event in the central equatorial Pacific. Geophysical Research Letters, 48, e2021GL094036. https://doi.org/10.1029/2021GL094036
  14. Grothe, P. R., Cobb, K. M., Liguori, G., Di Lorenzo, E., Capotondi, A., Lu, Y., Cheng, H., Edwards, R. L., Southon, J. R., Santos, G. M., Deocampo, D. M., Lynch-Stieglitz, J., Chen, T., Sayani, H. R., Thompson, D. M., Conroy, J. L., Moore, A. L., Townsend, K., Hagos, M., O’Connor, G.K., Toth, L. T. (2020). Enhanced El Niño–Southern Oscillation Variability in Recent Decades. Geophysical Research Letters, 47, e2019GL083906. https://doi.org/10.1029/2019GL083906