The Importance of Ice Vertical Resolution for Snowball Climate and Deglaciation
Sea ice schemes with a few vertical levels are typically used to simulate the thermodynamic evolution of sea ice in global climate models. Here it is shown that these schemes overestimate the magnitude of the diurnal surface temperature cycle by a factor of 2–3 when they are used to simulate tropica...
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American Meteorological Society
2010
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ftcaltechauth:oai:authors.library.caltech.edu:21772 2023-05-15T18:16:45+02:00 The Importance of Ice Vertical Resolution for Snowball Climate and Deglaciation Abbot, Dorian S. Eisenman, Ian Pierrehumbert, Raymond T. 2010-11-15 application/pdf https://authors.library.caltech.edu/21772/ https://authors.library.caltech.edu/21772/1/Abbot2010p12357J_Climate.pdf https://resolver.caltech.edu/CaltechAUTHORS:20110118-085150999 en eng American Meteorological Society https://authors.library.caltech.edu/21772/1/Abbot2010p12357J_Climate.pdf Abbot, Dorian S. and Eisenman, Ian and Pierrehumbert, Raymond T. (2010) The Importance of Ice Vertical Resolution for Snowball Climate and Deglaciation. Journal of Climate, 23 (22). pp. 6100-6109. ISSN 0894-8755. doi:10.1175/2010JCLI3693.1. https://resolver.caltech.edu/CaltechAUTHORS:20110118-085150999 <https://resolver.caltech.edu/CaltechAUTHORS:20110118-085150999> other Article PeerReviewed 2010 ftcaltechauth https://doi.org/10.1175/2010JCLI3693.1 2021-11-11T18:46:01Z Sea ice schemes with a few vertical levels are typically used to simulate the thermodynamic evolution of sea ice in global climate models. Here it is shown that these schemes overestimate the magnitude of the diurnal surface temperature cycle by a factor of 2–3 when they are used to simulate tropical ice in a Snowball earth event. This could strongly influence our understanding of Snowball termination, which occurs in global climate models when the midday surface temperature in the tropics reaches the melting point. A hierarchy of models is used to show that accurate simulation of surface temperature variation on a given time scale requires that a sea ice model resolve the e-folding depth to which a periodic signal on that time scale penetrates. This is used to suggest modifications to the sea ice schemes used in global climate models that would allow more accurate simulation of Snowball deglaciation. Article in Journal/Newspaper Sea ice Caltech Authors (California Institute of Technology) Journal of Climate 23 22 6100 6109 |
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Caltech Authors (California Institute of Technology) |
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ftcaltechauth |
language |
English |
description |
Sea ice schemes with a few vertical levels are typically used to simulate the thermodynamic evolution of sea ice in global climate models. Here it is shown that these schemes overestimate the magnitude of the diurnal surface temperature cycle by a factor of 2–3 when they are used to simulate tropical ice in a Snowball earth event. This could strongly influence our understanding of Snowball termination, which occurs in global climate models when the midday surface temperature in the tropics reaches the melting point. A hierarchy of models is used to show that accurate simulation of surface temperature variation on a given time scale requires that a sea ice model resolve the e-folding depth to which a periodic signal on that time scale penetrates. This is used to suggest modifications to the sea ice schemes used in global climate models that would allow more accurate simulation of Snowball deglaciation. |
format |
Article in Journal/Newspaper |
author |
Abbot, Dorian S. Eisenman, Ian Pierrehumbert, Raymond T. |
spellingShingle |
Abbot, Dorian S. Eisenman, Ian Pierrehumbert, Raymond T. The Importance of Ice Vertical Resolution for Snowball Climate and Deglaciation |
author_facet |
Abbot, Dorian S. Eisenman, Ian Pierrehumbert, Raymond T. |
author_sort |
Abbot, Dorian S. |
title |
The Importance of Ice Vertical Resolution for Snowball Climate and Deglaciation |
title_short |
The Importance of Ice Vertical Resolution for Snowball Climate and Deglaciation |
title_full |
The Importance of Ice Vertical Resolution for Snowball Climate and Deglaciation |
title_fullStr |
The Importance of Ice Vertical Resolution for Snowball Climate and Deglaciation |
title_full_unstemmed |
The Importance of Ice Vertical Resolution for Snowball Climate and Deglaciation |
title_sort |
importance of ice vertical resolution for snowball climate and deglaciation |
publisher |
American Meteorological Society |
publishDate |
2010 |
url |
https://authors.library.caltech.edu/21772/ https://authors.library.caltech.edu/21772/1/Abbot2010p12357J_Climate.pdf https://resolver.caltech.edu/CaltechAUTHORS:20110118-085150999 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_relation |
https://authors.library.caltech.edu/21772/1/Abbot2010p12357J_Climate.pdf Abbot, Dorian S. and Eisenman, Ian and Pierrehumbert, Raymond T. (2010) The Importance of Ice Vertical Resolution for Snowball Climate and Deglaciation. Journal of Climate, 23 (22). pp. 6100-6109. ISSN 0894-8755. doi:10.1175/2010JCLI3693.1. https://resolver.caltech.edu/CaltechAUTHORS:20110118-085150999 <https://resolver.caltech.edu/CaltechAUTHORS:20110118-085150999> |
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other |
op_doi |
https://doi.org/10.1175/2010JCLI3693.1 |
container_title |
Journal of Climate |
container_volume |
23 |
container_issue |
22 |
container_start_page |
6100 |
op_container_end_page |
6109 |
_version_ |
1766190600804106240 |