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The cause of Late Cretaceous cooling; a multimodel-proxy comparison

Clay R. Tabor, Christopher J. Poulsen, Daniel J. Lunt, Nan A. Rosenbloom, Bette L. Otto-Bliesner, Paul J. Markwick, Esther C. Brady, Alexander Farnsworth and Ran Feng
The cause of Late Cretaceous cooling; a multimodel-proxy comparison
Geology (Boulder) (October 2016) 44 (11): 963-966


Proxy temperature reconstructions indicate a dramatic cooling from the Cenomanian to Maastrichtian. However, the spatial extent of and mechanisms responsible for this cooling remain uncertain, given simultaneous climatic influences of tectonic and greenhouse gas changes through the Late Cretaceous. Here we compare several climate simulations of the Cretaceous using two different Earth system models with a compilation of sea-surface temperature proxies from the Cenomanian and Maastrichtian to better understand Late Cretaceous climate change. In general, surface temperature responses are consistent between models, lending confidence to our findings. Our comparison of proxies and models confirms that Late Cretaceous cooling was a widespread phenomenon and likely due to a reduction in greenhouse gas concentrations in excess of a halving of CO (sub 2) , not changes in paleogeography.

ISSN: 0091-7613
EISSN: 1943-2682
Serial Title: Geology (Boulder)
Serial Volume: 44
Serial Issue: 11
Title: The cause of Late Cretaceous cooling; a multimodel-proxy comparison
Affiliation: University of Michigan, Department of Earth and Environmental Sciences, Ann Arbor, MI, United States
Pages: 963-966
Published: 20161003
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 25
Accession Number: 2016-094416
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Annotation: GSA Data Repository item 2016328
Illustration Description: illus.
N70°00'00" - N90°00'00", W180°00'00" - E180°00'00"
Secondary Affiliation: University of Bristol, GBR, United KingdomNational Center for Atmospheric Research, USA, United StatesGetech, GBR, United Kingdom
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 201646
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