Overview
For the past several years, I have been pursuing the goal of understanding climate change on time-scales from decades to millions of years. I am particularly interested in what forces natural climate variability, how past climates have influenced the ecology and diversity of organisms in the tropics, as well as how climate change and other human activities will affect the eventual fate of these organisms.
Current Appointments & Affiliations
Professor Emeritus of Earth and Climate Science
·
2023 - Present
Earth and Climate Sciences,
Nicholas School of the Environment
Recent Publications
AMOC-forced southward migration of the ITCZ under a warm climate background
Journal Article Palaeogeography, Palaeoclimatology, Palaeoecology · March 1, 2025 Northern northeastern Brazil (NEB) is a climate change hotspot due to its high biological and social vulnerability to ongoing and future hydroclimate changes. Precipitation in this region is influenced by the Intertropical Convergence Zone (ITCZ), which is ... Full text CiteMillennial- to centennial-scale Atlantic ITCZ swings during the penultimate deglaciation
Journal Article Quaternary Science Reviews · January 15, 2025 Growing concerns surround the future of the Atlantic Meridional Overturning Circulation (AMOC) and its impacts on tropical regions, particularly due to changes in the dynamics of the Intertropical Convergence Zone (ITCZ). Northeastern Brazil, a tropical re ... Full text CiteThe palaeoclimate potential of continental scientific drilling
Journal Article Nature Geoscience · December 1, 2024 Full text CiteRecent Grants
Biodiversity Conservation in the Binational Mira-Mataje River Basins-Building Biophysical and Socio-Environmental Bases for Conservation and the Adaptive Management of Ecosystem Services
ResearchPrincipal Investigator · Awarded by John D. and Catherine T. MacArthur Foundation · 2017 - 2025Collaborative Research: Trans-Amazon Drilling Project
ResearchPrincipal Investigator · Awarded by National Science Foundation · 2018 - 2024A Proposal to Manage the U.S. Science Support Program Office associated with the International Ocean Discovery Program (USSSP-IODP) (On-campus)
ResearchPrincipal Investigator · Awarded by The Trustees of Columbia University · 2020 - 2022View All Grants
Education, Training & Certifications
University of California, San Diego ·
1981
Ph.D.
Pennsylvania State University ·
1975
M.S.
University of Rochester ·
1973
B.A.