The Leadership Team

paleoCAMP is organized by a team of six paleoclimatologists, representing a diversity of proxy approaches to past climate reconstruction, timescales of interest, and laboratory, field, and statistical methods.

Dr. Jessica Tierney

Dr. Tierney is a Professor in the Department of Geosciences at the University of Arizona. She specializes in biomarker-based reconstructions of past climate and statistical techniques. She is a medalist and Fellow of the American Geophysical Union and lead author on the IPCC AR6 Working Group 1 assessment report. Learn more about Dr. Tierney

Dr. Kathleen Johnson

Dr. Johnson is an Associate Professor in the Department of Earth System Science at the University of California, Irvine. She specializes in using speleothems to reconstruct past hydroclimate change. She is a Fellow of the Geological Society of America and President-Elect of the AGU Paleoceanography and Paleoclimatology section. Learn more about Dr. Johnson

Dr. Alberto Reyes

Dr. Reyes is an Associate Professor in the Department of Earth and Atmospheric Sciences at the University of Alberta. He specializes in Quaternary geology and the interactions between climate and the cryosphere. Learn more about Dr. Reyes

Dr. Kevin Anchukaitis

Dr. Anchukaitis is a Professor in the School of Geography, Development, and Environment at the University of Arizona. He specializes in tree ring-based climate reconstructions and spatiotemporal methods. Learn more about Dr. Anchukaitis

Dr. Daniel E. Ibarra

Dr. Ibarra is an Assistant Professor in the Department of Earth, Environmental, and Planetary Sciences at Brown University. He specializes in terrestrial climate reconstructions, geochemical approaches, and the geologic carbon cycle. Learn more about Dr. Ibarra

Dr. Sylvia Dee

Dr. Dee is an Assistant Professor at Rice University. She specializes in proxy system modeling and water isotope tracers. Learn more about Dr. Dee.

Dr. Branwen Williams

Dr. Williams is the George R. Roberts Professor of Integrated Sciences: Environmental Science at Claremont McKenna College and the Director of the Roberts Environmental Center. She specializes in high-resolution climate reconstruction using deep water corals and coralline algae. Learn more about Dr. Williams.

Dr. Jerry McManus

Dr. McManus is a Professor in the Department of Earth and Environmental Sciences at Columbia University and Lamont-Doherty Earth Observatory. He specializes in understanding past changes in ocean circulation and abrupt climate change. He is a Fellow of the American Geophysical Union. Learn more about Dr. McManus

Dr. Jiang Zhu

Dr. Zhu is a project scientist in the paleo & polar climate section at the National Center for Atmospheric Research. Dr. Zhu specializes in simulating past climates with the Community Earth System Model to understand climate dynamics and climate sensitivity. Learn more about Dr. Zhu.

Dr. Daniel Gebregiorgis

Dr. Gebregiorgis is an Assistant Professor in the Department of Geosciences at Georgia State University. He is an expert in paleo-monsoon reconstructions and oxygen isotopes. Learn more about Dr. Gebregiorgis.

Dr. Mark Torres

Dr. Torres is an inorganic geochemist who studies carbon cycling and weathering using trace element and isotope proxies. Learn more about Dr. Torres.

Dr. Summer Praetorius

Dr. Praetorius is a Research Geologist in the Geology, Minerals, Energy, and Geophysics Science Center at the United States Geological Survey in Menlo Park, CA. She is an expert in paleoceanography, abrupt climate change, and intersections between the paleoclimate and archaeological record. Learn more about Dr. Praetorius.

Dr. Jane Baldwin

Dr. Baldwin is an Assistant Professor in the Department of Earth System Science at the University of California, Irvine. She specializes in climate dynamics and climate extremes, both in the present and the past. Learn more about Dr. Baldwin.

Dr. Clarke Knight

Dr. Knight is a paleoecologist at the United States Geological Survey. She specializes in pollen and proxies for fire activity to reconstruct how ecosystems have changed in the past. Learn more about Dr. Knight.

Dr. Allison Jacobel

Dr. Jacobel is a paleoceanographer who using geochemical, sedimentological, and micropaleontological techniques to study millennial-scale climate change. Learn more about Dr. Jacobel.

Dr. Rebekah Stein

Dr. Stein is a program specialist at the University Center for Atmospheric Research. She specializes past changes in terrestrial environments, including during greenhouse climates. Learn more about Dr. Stein.

Dr. Sandra Kirtland-Turner

Dr. Kirtland-Turner is a climate modeler who specializes in studying the carbon cycle on long geological timescales. Learn more about Dr. Kirtland-Turner.

Dr. Sarah Aarons

Dr. Aarons is an Assistant Professor at Scripps Institution of Oceanography. She specializes in Earth surface processes, including the role of the cryosphere and dust in the climate system, and the use of novel isotope systems. Learn more about Dr. Aarons

Dr. Laura Gemery

Dr. Gemery is a Research Ecologist in the Florence Bascom Geoscience Center at the U.S. Geological Survey. She specializes in climate impacts on Arctic marine ecosystems and paleoceanographic reconstructions using microfossils such as ostracodes and foraminifera. Learn more about Dr. Gemery.

Dr. Tripti Bhattacharya

Dr. Bhattacharya is an Associate Professor in the Department of Earth and Environmental Sciences at Syracuse University. She is an expert in paleoclimate dynamics and paleo-monsoon reconstruction. She was one of the original co-founders and coPIs of paleoCAMP from 2020 to 2023. Learn more about Dr. Bhattacharya.