Faculty Member Chris Reinhard published in the Proceedings of the National Academy of Sciences
Dr. Christopher Reinhard, assistant professor in Earth & Atmospheric Sciences, has been published in the Proceedings of the National Academy of Sciences.
From the article:
Proterozoic climate dynamics, including both remarkable climate stability during the mid-Proterozoic and extreme low-latitude glaciation in the Neoproterozoic, must be understood in the framework of evolving oxidant reservoirs throughout the Precambrian. We present Earth system model simulations showing that recent constraints on atmospheric oxygen and oceanic sulfate during Proterozoic time have profound implications for marine methane cycling and the accumulation of methane in the atmosphere. Our model results challenge the paradigm of persistently elevated methane during the Precambrian, thus extending the relevance of the faint young Sun paradox throughout the Proterozoic. In light of the possibility of low methane during the mid-Proterozoic, we also suggest a conceptual model for the relationship between oxygenation, methane, and Neoproterozoic Snowball Earth events.
Dr. Chris Reinhard’s background is originally in evolutionary biology, but his past and current research is best characterized as falling under the label of 'deep time biogeochemistry' — He is fascinated and astonished by the observation that our planet has come to support a pervasive biosphere, and seek to reconstruct how we got here. This involves combining techniques from aqueous geochemistry, geology, and biogeochemical modeling in an effort to reconstruct Earth surface environments as they have changed over long timescales through Earth's deep history and how this evolution has been coupled with the evolution of microbial and macroscopic life. He received his Ph.D. in Earth Sciences from the University of California, Riverside in 2012 and joined Georgia Tech as an Assistant Professor in 2014.