Nina Keul

Global climate change is one of the most pressing challenges our society is facing at the moment. In combination with temperature reconstructions, accurate atmospheric paleo-CO2 estimates are necessary to validate models that aim at predicting global temperature rise related to CO2 -forcing mechanisms (e.g. Lüthi et al., 2008), while reconstruction of atmospheric pCO2 going further back in time relies on sedimentary archives (e.g. Hönisch et al., 2012). Although work to date has led to important advances in the use of proxies for CO2 reconstructions, existing uncertainties in the measurement of these proxies results in the need for the establishment of new CO2-proxies. I propose to analyze the proxy potential of pteropods, a group of marine calcifiers that are abundant in all major oceans (Lalli and Gilmer, 1989).