Department of Geography and Planning

Education

Ph.D. Geography, Louisiana State University, 2021
M.A. Anthropology, Louisiana State University, 2015
B.A. Anthropology, Louisiana State University, 2010

Bio

I am a paleoclimatologist and geoarchaeologist working in proxy development, climate reconstruction, and human-environmental interactions in the past. My research includes the use of sclerochronology, sclerochemistry, environmental geochemistry, and archaeomalacology. I am particularly interested in large scale climate patterns, especially the El Niño-Southern Oscillation, and how their variability in the past was experienced by human populations. I am currently also working on mapping surface water stable isotopes in under researched areas of the United States and developing a hydroclimate proxy-archive system using short-lived gastropods common to North America. My research spans from Arizona in the west to the Appalachians in the east and south to coastal Peru.

Selected Publications

Sun, C., Shanahan, T., He, S., Bailey, A., Nusbaumer, J., Hu, J., Hillman, A., Ornouski, E., Warner, J., DeLong, K. (2024).  17 O-excess in tropical cyclones reflects local rain re-evaporation more than moisture source conditions. Journal of Geophysical Research: Atmospheres, 129, e2023JD039361. https://doi.org/10.1029/2023JD039361

Warner, J., & Alaica, A. K. (2022). Contextualizing the influence of climate and culture on bivalve populations: Donax obesulus malacology from the north coast of Peru. Journal of Island and Coastal Archaeology, 19(1), 150–171. https://doi.org/10.1080/15564894.2021.1991055

Warner, J. P., DeLong, K. L., Chicoine, D., Thirumalai, K., & Andrus, C. F. T. (2022). Investigating the influence of temperature and seawater δ18O on Donax obesulus (Reeve, 1854) shell δ18O. Chemical Geology, 588, 120638.