Ingeborg Levin was a German professor in Geosciences at the Institute for Environmental Physics (IUP) of Heidelberg University. Her work with atmospheric measurements significantly contributed to the knowledge of greenhouse gas dynamics. She set up a global network that measures radiocarbon in carbon dioxide (CO 2), information that can be used to verify bottom-up estimates of CO 2 emissions. She uses the concentration data of several chemical species to constrain carbon emissions and help validate global atmospheric models.