Gregory Wiles

Teaching Philosophy

Problem-solving and experiential learning through modeling, field, and lab studies.

Research Interests

Dr. Wiles’ primary research interests are in glacial geology, climate change and tree-ring analysis. Recent projects have been funded by that National Science Foundation, the National Geographic Society, and the Keck Geology Consortium.

• Environmental Geology
• The World’s Ice and Climate
• Paleoclimatology
• Geomorphology
• Hydrology
• Geoscience Careers
• Modern Climate Change

• Climatological Analysis of Recent Pluvial Conditions in Northeast Ohio and Implications for Water Management, Caitlyn A. Denes
• Assessing And Projecting Stream Patterns In Hydrogeomorphology In Low-Elevation Watersheds, Pitt County, North Carolina, USA, Matthew Engfer
• Determining the White Spruce Climate Response and Extending the Chronology in Nabesna, Alaska, Maxwell C. Fletcher
• An Investigation of Improving Blue Intensity Measurements from Tree Rings, Gulf of Alaska, USA, Wenshuo Zhao
• Unearthing The Effects Of European-American Settlement On A Northeast Ohio Kettle Lake Through Diatom Stratigraphy, Justine Paul A. Berina

Wooster staff and students in italics:

• Diefendorf, A.F., Dietrich, W.L., Naake, H., Corcoran, M.C., Andrew. J. Kmetz, Lowell, T.V., Schenk, M., Wiles, G., and Wilson, M., 2025, Diatom-derived highly branched isoprenoids are diverse and widespread in lakes: Organic Geochemistry, https://doi.org/10.1016/j.orggeochem.2025.104993.
• Zhao, W., Fu, J., Wiesenberg, N., Gaglioti, B. and Wiles, G.C., 2025, Optimizing tree-ring blue intensity using hydrogen peroxide: an example from subfossil wood, Gulf of Alaska, USA: Dendrochronologia, https://ssrn.com/abstract=4856153 or http://dx.doi.org/10.2139/ssrn.4856153.
• Wiles, G.C., Wiesenberg, N., Pollock, M., Denes, C., Cooper, T., Smith, D., and Wiles, M., 2025, Changing climate response of Northeast Ohio white oaks, USA: Is it tree age or site age?: Dendrochronologia, 91: doi.org/10.1016/j.dendro.2025.126307.
• Gaglioti, B.V., Mann, D.H., Wiles, G.C., Andreu-Hayles, L., Hansen, W.D. and Wiesenberg, N., 2024, Forest‐wide growth rates stabilize after experiencing accelerated temperature changes near an Alaskan glacier: Geophysical Research Letters, http: e2024GL109469.
• Brush, N., Burks, J. Kardulias, P., Wiles, G., Dilyard, J. and Morton, J., 2023, Late Prehistoric Sites in the Lower Walhonding Valley of Coshocton County, Ohio during a Warm and Cool Period: Archaeology of Eastern North America, 51:157-190.
• Leland, L.C., D’Arrigo, R., Davi, N., Anchukaitis, K., Andreu-Hayles, L., Porter, T., Galloway, T., Mant, M., Wiles, G., Wilson, R., Beaulieu, S., Oelkers, R., Gaglioti, B., Palat Rao,  M., Reid, E. and Nixon, T., 2023, A spatiotemporal assessment of extreme cold in northwestern North America following the unidentified 1809 CE volcanic eruption: Paleoceanography and Paleoclimatology.
• Wiles, G.C., Devereux, K., Gaglioti, B.V., D’Arrigo, R.D., 2023, A 420‐Year Perspective on Winter Lake Erie Levels: Geophysical Research Letters 50 (1), doi.org/10.1029/2022GL099911.

• Adjunct Senior Research Scientist Lamont-Doherty Earth Observatory 1996-present
• Contributing author to Chapter 6 (Paleoclimate) of the Working Group I, IPCC Fourth Assessment Report, 2007.
• Member of the Geological Society of America, American Geophysical Union, National Association of Geoscience Teachers, and the Tree Ring Society
• Associate Editor, Tree Ring Research (2002-present)