Rapid ocean acidification and protracted Earth system recovery followed the end-Cretaceous Chicxulub impact

MJ Henehan, A Ridgwell, E Thomas… - Proceedings of the …, 2019 - National Acad Sciences
Mass extinction at the Cretaceous–Paleogene (K-Pg) boundary coincides with the
Chicxulub bolide impact and also falls within the broader time frame of Deccan trap …

Negative carbon isotope excursions: an interpretive framework

P Vervoort, M Adloff, SE Greene… - Environmental …, 2019 - iopscience.iop.org
Numerous negative carbon isotope excursions (nCIEs) in the geologic record occurring over
104–105 years are interpreted as episodes of massive carbon release. nCIEs help to …

Fundamentally different global marine nitrogen cycling in response to severe ocean deoxygenation

BDA Naafs, FM Monteiro, A Pearson… - Proceedings of the …, 2019 - National Acad Sciences
The present-day marine nitrogen (N) cycle is strongly regulated by biology. Deficiencies in
the availability of fixed and readily bioavailable nitrogen relative to phosphate (P) in the …

Considering the role of adaptive evolution in models of the ocean and climate system

BA Ward, S Collins, S Dutkiewicz… - Journal of advances …, 2019 - Wiley Online Library
Numerical models have been highly successful in simulating global carbon and nutrient
cycles in today's ocean, together with observed spatial and temporal patterns of chlorophyll …

CO2 Release From Pockmarks on the Chatham Rise‐Bounty Trough at the Glacial Termination

L Stott, B Davy, J Shao, R Coffin… - Paleoceanography …, 2019 - Wiley Online Library
Seafloor pockmarks of varying size occur over an area of 50,000 km2 on the Chatham Rise,
Canterbury Shelf and Inner Bounty Trough, New Zealand. The pockmarks are concentrated …

PALEO-PGEM v1. 0: a statistical emulator of Pliocene–Pleistocene climate

PB Holden, NR Edwards, TF Rangel… - Geoscientific Model …, 2019 - gmd.copernicus.org
We describe the development of the “Paleoclimate PLASIM-GENIE (Planet Simulator–Grid-
Enabled Integrated Earth system model) emulator” PALEO-PGEM and its application to …

Atmosphere‐Ocean CO2 Exchange Across the Last Deglaciation From the Boron Isotope Proxy

J Shao, LD Stott, WR Gray, R Greenop… - Paleoceanography …, 2019 - Wiley Online Library
Identifying processes within the Earth System that have modulated atmospheric pCO2
during each glacial cycle of the late Pleistocene stands as one of the grand challenges in …

Early Cenozoic decoupling of climate and carbonate compensation depth trends

SE Greene, A Ridgwell… - Paleoceanography …, 2019 - Wiley Online Library
Our understanding of the long‐term evolution of the Earth system is based on the
assumption that terrestrial weathering rates should respond to, and hence help regulate …

Mitigation of extreme ocean anoxic event conditions by organic matter sulfurization

D Hülse, S Arndt, A Ridgwell - Paleoceanography and …, 2019 - Wiley Online Library
Past occurrences of widespread and severe anoxia in the ocean have frequently been
associated with abundant geological evidence for free hydrogen sulfide (H2S) in the water …

Investigating ocean deoxygenation during the PETM through the Cr isotopic signature of foraminifera

SRC Remmelzwaal, S Dixon… - Paleoceanography …, 2019 - Wiley Online Library
Over the past several decades, oxygen minimum zones have rapidly expanded due to rising
temperatures raising concerns about the impacts of future climate change. One way to better …