EPS Colloquium - Bärbel Hönisch, Lamont-Doherty Earth Observatory/Columbia University in the City of New York

Date: 

Monday, April 24, 2023, 12:00pm to 1:00pm

Location: 

Geo Mus 102 (Haller Hall) and Zoom

Talk Title:  Reconstructions of Cenozoic atmospheric CO2 and ocean carbon cycle perturbations

Abstract:  My research interests focus on understanding the role of the ocean, and in particular the role of marine carbonate chemistry in global climate change. As I was originally trained as a (marine) biologist, my way of approaching paleoceanographic questions often includes a biological component. I will present an introduction to reconstructing marine carbonate chemistry from boron proxies in planktic foraminifera, including calibration under simulated deep-time conditions and application to the last deglaciation and the Paleocene-Eocene Thermal Maximum. In addition, I will report on a 7-year international effort to document and vet atmospheric CO2 concentrations over the Cenozoic.

To be added to the EPS colloquium mailing list, please contact Maryorie Grande (grande@eps.harvard.edu)