Publications

Publications

  • Rustic, G.T., Pausata, FSR, deMenocal, P.B. (in revision) Mid-Holocene reduction in eastern tropical Atlantic variability and alteration of global Walker circulation.
  • Rustic, G.T., Polissar, P (in review) Alteration of the eastern equatorial Pacific mixed layer across the Pleistocene – Holocene boundary revealed by trace elemental analysis of foraminifera morphotypes.
  • Barth, A.M., Rustic, G.T., Barker, Pfeifer, L.S. (in review) Refining the methods of trace metalanalysis of whole rock samples using ICP-OES for the purposes of 36Cl surface exposure dating.
  • Pfeifer, L.S., Ramezani, J., Van Den Driessche, J., Pochat, S., Soreghan, M.J., Rustic, G.T., Soreghan, G. (2024) Recurrence rates of explosive volcanism in paleo-equatorial Pangaea, and implications for climate near the peak Late Paleozoic Ice Age. Scientific Reports, 15, 15758 (2025). https://doi.org/10.1038/s41598-025-99184-5.
  • Rustic, Gerald T., Polissar, Pratigya J., Ravelo, Ana Christina, DeMenocal, Peter B. (2021) Relationship between individual chamber and whole shell Mg/ Ca ratios in Trilobatus sacculifer and implications for individual foraminifera palaeoceanographic reconstructions. Scientific Reports, 11:463. doi:10.1038/s41598-020-80673-8, https://rdcu.be/cdnp7
  • Rustic, Gerald T., Polissar, Pratigya J., Ravelo, Ana Christina, White, Sarah M. (2020) Modulation of late Pleistocene ENSO strength by the tropical Pacific thermocline. Nature Communications 11, 5377. doi: 10.1038/s41467-020-19161-6. https://rdcu.be/b8ZaQ
  • Rustic, G.T., Koutavas, A., Marchitto, T.M., Linsley, B.K. (2015) Dynamical Excitation of the tropical Pacific and ENSO variability by Little Ice Age cooling. Science, 350:627, 1537-1541, http://science.sciencemag.org/content/350/6267/1537.
  • Wei, S., Yi, C., Hendrey, G., Eaton, T, Rustic, G.T., et al. (2014) Data-based perfect-deficit approach to understanding climate extremes and forest carbon assimilation capacities, Environmental Research Letters 9:6. http://iopscience.iop.org/1748-9326/9/6/065002
  • Yi, C., Rustic, G., Xu, X., Wang, J., Dookie, A., Wei, S., Hendrey, G., Ricciuto, D., Meyers, T., Nagy, Z., Pinter, K. (2012) Climate extremes and grassland potential productivity, Environmental Research Letters 7:3. http://iopscience.iop.org/1748-9326/7/3/035703

Conference Presentations and Invited Talks

  • DeBellis, K.^; Rustic, G.T., Ngo, M.^ (2025) Evidence for a Mid-Millennium Shift in the Eastern Equatorial Pacific Thermocline: A Multi-Species and Multi-Proxy Water Column Reconstruction, American Geophysical Union Fall Meeting 2025, New Orleans, LA
  • Ngo, M.^; Rustic, G.T., Slotter, J.*, DeBellis, K.^, (2025) Last Glacial Maximum Surface and Subsurface Conditions in the Central and Eastern Equatorial Pacific, American Geophysical Union Fall Meeting 2025, New Orleans, LA
  • Rustic, G.T.; Pausata, FSR; Prado, L.; DeMenocal, P (2025), Mid-Holocene reductions of equatorial Atlantic Ocean variability and linkages to high-latitude Southern Atlantic forcing, George Mason University CLIM Seminar (Invited)
  • Rustic, G.T.; Pausata, FSR; Prado, L.; DeMenocal, P (2025) Reorganization of the Walker Circulation at mid-Holocene: Insights on climate variability from the equatorial Atlantic Ocean, Woods Hole Oceanographic Institute (Invited)
  • Rustic, Gerald T.; DeBellis, K.^; Heminghaus, M.*; Hill, K.*; Ngo, M.^; Rosenheim, E.*; Slotter, J.*; Van Pelt, K.* (2024) The relationship between tropical Pacific subsurface conditions and ENSO variability: Insights from thermocline reconstructions in the eastern and central tropical Pacific. American Geophysical Union 2024 Fall Meeting. Washington, D.C. (Invited)
  • DeBellis, K.^; Rustic, Gerald T.; Van Pelt, K.*; Rosenheim, E.* (2024) A Multi-species Approach to Reconstructing Subsurface Conditions in the Eastern Equatorial Pacific and its Relationship with Surface Variability Over the Last 2,000 Years. American Geophysical Union 2024 Fall Meeting. Washington, D.C.
  • Ngo, M.^; Rustic, Gerald T.; Heminghaus, M.*; Hill, Kirsten* (2024). Reconstructing the Central Tropical Pacific Thermocline During the Last Glacial Maximum Using Planktic Foraminifera. American Geophysical Union 2024 Fall Meeting. Washington D.C. 
  • Slotter, J.*; Rustic, Gerald T.; Heminghaus, M.* (2024). A multi-species approach to reconstructing the eastern equatorial Pacific thermocline during the Last Glacial Maximum. American Geophysical Union Fall Meeting 2024. Washington, D.C. 
  • Rustic, G., Rosenheim, E.*, Slotter, J.*, and Hill, K.* (2024). Reconstructing Tropical Pacific Variability During the Last Glacial Maximum Using Individual Foraminifera: An Investigation of ENSO Flavors. European Geological Union 2024. Vienna, Austria 
  • Hill, K.*; Rustic, Gerald T. (2024). Investigation Of Central Tropical Pacific Variability During The Last Glacial Maximum Through Analysis Of Trace Elements In Individual Foraminifera. 2024 GSA NE Section Meeting. Manchester, NH.
  • Slotter, J.; Rustic, Gerald T. (2024). Thermocline Conditions In The Eastern Equatorial Pacific During The Last Glacial Maximum. 2024 GSA NE Section Meeting. Manchester, NH.
  • Van Pelt, K.*; Rustic, Gerald T. (2024). Exploring Thermocline Influence On Enso By Reconstructing Subsurface Conditions In The Eastern Equatorial Pacific Over The Past 2500 Years Using Trace Element Analysis. 2024 GSA NE Section Meeting. Manchester, NH.
  • Rosenheim, E.*; Rustic, Gerald T.; Van Pelt, K.* (2023). Investigating Thermocline Control On Enso In The Holocene Using Foraminifera Trace Element Geochemistry. GSA Connects 2023. Pittsburgh, PA. 
  • Van Pelt, K.*; Rustic, Gerald T.; Rosenheim, E.* (2023). Exploring Thermocline Influence On Enso By Reconstructing Subsurface Conditions In The Eastern Equatorial Pacific Over The Past 2500 Years Using Trace Element Analysis. GSA Connects 2023. Pittsburgh, PA.
  • Van Pelt, K.*, Rustic, G.T., Rosenheim, E.* (2023) Exploring thermocline influence on ENSO by reconstructing subsurface conditions in the Eastern Equatorial Pacific over the past 2500 years using trace element analysis, GSA NE/SE Section Meeting 2023, Reston, VA
  • Rosenheim, E.*, Rustic, G.T., Van Pelt, K.* (2023) Investigating thermocline control of ENSO activity and tropical variability in the Eastern Equatorial Pacific using foraminifera geochemistry, GSA NE/SE Section Meeting 2023, Reston, VA (p)
  • Rustic, G.T., Polissar, P.J., Flanagan, M.* (2022) Observed differences in reconstructed sea surface temperature in G. ruber morphotypes: Seasonal bias or depth habitat? (2022), International Conference on Paleoceanography 2022, Bergen, NO (p)
  • Rustic, G.T., Flanagan, M.u, Rosenheim, E.u (2022) Implications and interpretations of the varying differences in Mg/Ca from two morphotypes of Globigerinoides ruber from the eastern equatorial Pacific through the Holocene, AGU Fall Meeting 2022, Chicago, IL, USA (p)
  • Rustic, G.T., Polissar, P.J., Flanagan, M.u (2021) Mixed-up in the mixed-layer: Observed differences in Mg/Ca-derived G. ruber morphotype temperatures as indicators of water-column or seasonal change?, AGU Fall Meeting 2021, online.
  • Rustic, G., Pausata, F. S., and DeMenocal, P. (2021) Reduced eastern tropical Atlantic sea surface temperature variability at the end of the Green Sahara, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-13795, https://doi.org/10.5194/egusphere-egu21-13795.
  • Rustic, G.T., Koutavas, A., Marchitto, T.M. (2020) Cooling and freshening of the eastern equatorial Pacific during the Common Era, European Geological Union Annual Meeting 2020 (Online)
  • Rustic, G.T., Polissar, P.J., Ravelo, A.C., White, S.M. (2019) The relationship between ENSO and tropical Pacific background state: Evidence from individual foraminifera. American Geophysical Union Fall 2019 Meeting (Invited)
  • Rustic, G.T. (2019) The relationship between the El Niño Southern Oscillation and Climate Boundary Conditions: Insights from Individual Foraminifera, Lafayette College (Invited)
  • Rustic, G.T., Polissar, P.J., Ravelo, A.C., White, S.M. (2019) Modulation of Late Pleistocene ENSO strength by the tropical Pacific thermocline revealed by individual foraminifera, International Conference on Paleoceanography 2019, Sydney, AUS (Poster)
  • Rustic, G.T. (2019) ENSO’s relationship to tropical Pacific background state, PaleoENSO Workshop, Belitung, Indonesia (Oral)
  • Rustic, G.T., deMenocal, P., Pausata, F.S.R. (2018) Tropical Atlantic Variability Through the Late Holocene from Individual Foraminifera, American Geophysical Union Fall Meeting 2018 (Poster).
  • Rustic, G.T., Polissar, P.J., Ravelo, A.C., White, S.M. (2018) ENSO Variability Through the Late Pleistocene from Individual Foraminifera, FORAMS2018 (Oral Presentation)
  • Rustic, G.T., deMenocal, P., Pausata, F.S.R. (2018) Tropical Atlantic Variability Through the Holocene from Individual Foraminifera, European Geoscience Union Meeting 2018 (Oral Presentation)
  • Rustic, G.T., Polissar, P.J., Ravelo, A.C. (2017) Central Tropical Pacific Variability And ENSO Response To Changing Climate Boundary Conditions: Evidence From Individual Line Island Foraminifera, American Geophysical Union Fall Meeting 2017  (Oral Presentation)
  • Rustic, G.T., Polissar, P.J., Ravelo, A.C., DeMenocal, P. (2017). Measurements, Methods and Motivations: Insights on Mg/Ca from Individual Foraminifera, Geological Society of America 2017 Annual Meeting (Oral Presentation) 
  • Rustic, G.T. (2017) El Niño’s Response to Background Climate Conditions on Millennial and Interglacial Time-Scales: Evidence from Individual Foraminifera, CUNY Graduate Center GEOS (Invited)
  • Rustic, G.T., Polissar, P.J., Ravelo, A.C., White, S. (2017). Insolation, Ice, and Individual Foraminifera: ENSO Response to Climate Boundary States. LDEO Postdoctoral Symposium (Oral Presentation).
  • Rustic, G.T., Dial, A., Polissar, P.J. (2017). Measurement of Trace Metal Ratios in Individual Foraminifera Using Optical Emission Spectrometry. LDEO Postdoctoral Symposium (poster).
  • Rustic, G.T., Koutavas, A., Marchitto, T.M., Linsley, B.K., Polissar, P.J., Ravelo, A.C., White, S. (2017). Means and Extremes: ENSO variability over the last 1000 (and 100,000) years from individual foraminifera. LDEO Biology and Paleo Environment Seminar (Oral Presentation).
  • Rustic, G.T., Polissar, P.J., Ravelo, A.C., White, S. (2016). Inside-out v. Outside-in: Does ablation direction influence LA-ICPMS Mg/Ca in Single G. sacculifer? Workshop on Individual Formainifer Analysis (IFA) in Paleoceanography, Utrecht, Netherlands (Poster). 
  • Rustic, G.T., Koutavas, A., Marchitto, T.M. (2015). Late Holocene sea surface temperature trends in the Eastern Tropical Pacific, American Geophysical Union Fall Meeting 2015 (Poster).
  • Rustic, G.T., Koutavas, A., Marchitto, T.M., Linsley, B.K. (2014). Eastern Tropical Pacific Mean State and Variability During the Past 1000 Years, American Geophysical Union Fall Meeting 2014 (Oral Presentation).
  • Rustic, G.T., Koutavas, A., Linsley, B.K. (2013). El Niño Southern Oscillation during the Medieval Climate Anomaly, American Geophysical Union Fall Meeting 2013 (Poster).
  • Rustic, G.T., Koutavas, A., Linsley, B.K., Evans, M.N., Marchitto, T.M., Herbert, T. (2012). Variability of eastern tropical Pacific climate during the last two millennia from δ18O of individual foraminifera, American Geophysical Union Fall Meeting 2012 (Poster).
  • Rustic, G., Yi, C. (2011) Canopy Photosynthetic Capacity Signature of Extreme Events, American Geophysical Union Fall Meeting 2011 (Poster).
^= graduate advisees, *= undergraduate research assistants.