Climate of the Past
Climate of the Past
CP
Articles | Volume 16, issue 1
Articles | Volume 16, issue 1
https://doi.org/10.5194/cp-16-299-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-16-299-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 1
Research article
 | 
14 Feb 2020
Research article |  | 14 Feb 2020

Late Pliocene Cordilleran Ice Sheet development with warm northeast Pacific sea surface temperatures

Maria Luisa Sánchez-Montes, Erin L. McClymont, Jeremy M. Lloyd, Juliane Müller, Ellen A. Cowan, and Coralie Zorzi

Supplement

https://doi.org/10.5194/cp-16-299-2020-supplement

Data sets

Alkenone sea surface temperatures, ice rafted debris, terrestrial/aquatic n-alkane ratio, pollen counts and a new age and depth models from IODP Expedition 341 Site U1417, Gulf of Alaska. M. L. Sánchez-Montes, E. L. McClymont, J. M. Lloyd, J. Müller, E. A. Cowan, and C. Zorzi https://doi.org/10.1594/PANGAEA.899064

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Short summary
In this paper, we present new climate reconstructions in SW Alaska from recovered marine sediments in the Gulf of Alaska. We find that glaciers reached the Gulf of Alaska during a cooling climate 2.9 million years ago, and after that the Cordilleran Ice Sheet continued growing during a global drop in atmospheric CO2 levels. Cordilleran Ice Sheet growth could have been supported by an increase in heat supply to the SW Alaska and warm ocean evaporation–mountain precipitation mechanisms.
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