Atmospheric CO2 estimates for the Miocene to Pleistocene based on foraminiferal δ11B at Ocean Drilling Program Sites 806 and 807 in the Western Equatorial Pacific
Department of Atmospheric and Oceanic Sciences, Department of Earth,
Planetary, and Space Sciences, Center for Diverse Leadership in Science,
Institute of the Environment and Sustainability, University of California –
Los Angeles, Los Angeles, CA 90095 USA
Laboratoire Géosciences Océan UMR6538, UBO, Institut
Universitaire Européen de la Mer, Rue Dumont d'Urville, 29280,
Plouzané, France
Sambuddha Misra
Indian Institute of Science, Centre for Earth Sciences, Bengaluru,
Karnataka 560012, India
The Godwin Laboratory for Palaeoclimate Research, Department of Earth
Sciences, University of Cambridge, Cambridge, UK
Department of Atmospheric and Oceanic Sciences, Department of Earth,
Planetary, and Space Sciences, Center for Diverse Leadership in Science,
Institute of the Environment and Sustainability, University of California –
Los Angeles, Los Angeles, CA 90095 USA
Laboratoire Géosciences Océan UMR6538, UBO, Institut
Universitaire Européen de la Mer, Rue Dumont d'Urville, 29280,
Plouzané, France
Department of Atmospheric and Oceanic Sciences, Department of Earth,
Planetary, and Space Sciences, Center for Diverse Leadership in Science,
Institute of the Environment and Sustainability, University of California –
Los Angeles, Los Angeles, CA 90095 USA
Laboratoire Géosciences Océan UMR6538, UBO, Institut
Universitaire Européen de la Mer, Rue Dumont d'Urville, 29280,
Plouzané, France
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Here we reconstruct atmospheric CO2 values across major climate transitions over the past 16 million years (Myr) from two sites in the West Pacific Warm Pool using a pH proxy on surface-dwelling foraminifera. We are able to reproduce pCO2 data from ice cores; therefore we apply the same framework to older samples to create a long-term pH and pCO2 reconstruction. We give quantitative constraints on pH and pCO2 changes over the main climate transitions of the last 16 Myr.
Here we reconstruct atmospheric CO2 values across major climate transitions over the past 16...
