Early Eocene arctic climate sensitivity to pCO₂ and basin geography
We present results from new early Eocene (∼55-45 Ma) climate modeling experiments with the NCAR Community Climate System Model. These experiments test the sensitivity of climate to a large increase in atmospheric greenhouse gases, such as may have occurred at the Paleocene-Eocene (P-E) boundary (∼55...
Published in: | Geophysical Research Letters |
---|---|
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Geophysical Union
2009
|
Subjects: | |
Online Access: | http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-226 https://doi.org/10.1029/2009GL037248 |
id |
ftncar:oai:drupal-site.org:articles_15283 |
---|---|
record_format |
openpolar |
spelling |
ftncar:oai:drupal-site.org:articles_15283 2023-09-05T13:16:01+02:00 Early Eocene arctic climate sensitivity to pCO₂ and basin geography Shellito, Cindy (author) Lamarque, Jean-François (author) Sloan, Lisa (author) 2009-05-08 application/pdf http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-226 https://doi.org/10.1029/2009GL037248 en eng American Geophysical Union Geophysical Research Letters http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-226 doi:10.1029/2009GL037248 ark:/85065/d7tx3gd6 An edited version of this paper was published by AGU. Copyright 2009 American Geophysical Union. Palocene-Eocene boundary Carbon dioxide Text article 2009 ftncar https://doi.org/10.1029/2009GL037248 2023-08-14T18:36:06Z We present results from new early Eocene (∼55-45 Ma) climate modeling experiments with the NCAR Community Climate System Model. These experiments test the sensitivity of climate to a large increase in atmospheric greenhouse gases, such as may have occurred at the Paleocene-Eocene (P-E) boundary (∼55.5 Ma), and also allow us to explore the role of Arctic basin configuration on climate. Experiments were run with pCO₂ at 560 and 2240 ppm, and a third experiment, at 2240 ppm, incorporates a passage to a neighboring ocean to explore the potential effect of the ocean on Arctic warming, were the Arctic not isolated. Quadrupling pCO₂ warms the Arctic by ∼8°C in the annual average, doubles atmospheric moisture content in this region and eliminates Arctic sea ice, consistent with proxy estimates of warming at the P-E boundary. Opening the Arctic Ocean warms mean annual sea surface temperature by an additional ∼4°C. Article in Journal/Newspaper Arctic Basin Arctic Arctic Ocean Sea ice OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Arctic Arctic Ocean Geophysical Research Letters 36 9 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
topic |
Palocene-Eocene boundary Carbon dioxide |
spellingShingle |
Palocene-Eocene boundary Carbon dioxide Early Eocene arctic climate sensitivity to pCO₂ and basin geography |
topic_facet |
Palocene-Eocene boundary Carbon dioxide |
description |
We present results from new early Eocene (∼55-45 Ma) climate modeling experiments with the NCAR Community Climate System Model. These experiments test the sensitivity of climate to a large increase in atmospheric greenhouse gases, such as may have occurred at the Paleocene-Eocene (P-E) boundary (∼55.5 Ma), and also allow us to explore the role of Arctic basin configuration on climate. Experiments were run with pCO₂ at 560 and 2240 ppm, and a third experiment, at 2240 ppm, incorporates a passage to a neighboring ocean to explore the potential effect of the ocean on Arctic warming, were the Arctic not isolated. Quadrupling pCO₂ warms the Arctic by ∼8°C in the annual average, doubles atmospheric moisture content in this region and eliminates Arctic sea ice, consistent with proxy estimates of warming at the P-E boundary. Opening the Arctic Ocean warms mean annual sea surface temperature by an additional ∼4°C. |
author2 |
Shellito, Cindy (author) Lamarque, Jean-François (author) Sloan, Lisa (author) |
format |
Article in Journal/Newspaper |
title |
Early Eocene arctic climate sensitivity to pCO₂ and basin geography |
title_short |
Early Eocene arctic climate sensitivity to pCO₂ and basin geography |
title_full |
Early Eocene arctic climate sensitivity to pCO₂ and basin geography |
title_fullStr |
Early Eocene arctic climate sensitivity to pCO₂ and basin geography |
title_full_unstemmed |
Early Eocene arctic climate sensitivity to pCO₂ and basin geography |
title_sort |
early eocene arctic climate sensitivity to pco₂ and basin geography |
publisher |
American Geophysical Union |
publishDate |
2009 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-226 https://doi.org/10.1029/2009GL037248 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Basin Arctic Arctic Ocean Sea ice |
genre_facet |
Arctic Basin Arctic Arctic Ocean Sea ice |
op_relation |
Geophysical Research Letters http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-226 doi:10.1029/2009GL037248 ark:/85065/d7tx3gd6 |
op_rights |
An edited version of this paper was published by AGU. Copyright 2009 American Geophysical Union. |
op_doi |
https://doi.org/10.1029/2009GL037248 |
container_title |
Geophysical Research Letters |
container_volume |
36 |
container_issue |
9 |
_version_ |
1776197768283422720 |