Simulating the mid-Pliocene Warm Period with the CCSM4 model
This paper describes the experimental design and model results from a 500 yr fully coupled Community Climate System, version 4, simulation of the mid-Pliocene Warm Period (mPWP) (ca. 3.3–3.0 Ma). We simulate the mPWP using the "alternate" protocol prescribed by the Pliocene Model Intercomp...
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ftdoajarticles:oai:doaj.org/article:c1a94d3bbe9241f9ade03a1f7fe4c205 2023-05-15T17:33:48+02:00 Simulating the mid-Pliocene Warm Period with the CCSM4 model N. A. Rosenbloom B. L. Otto-Bliesner E. C. Brady P. J. Lawrence 2013-04-01T00:00:00Z https://doi.org/10.5194/gmd-6-549-2013 https://doaj.org/article/c1a94d3bbe9241f9ade03a1f7fe4c205 EN eng Copernicus Publications http://www.geosci-model-dev.net/6/549/2013/gmd-6-549-2013.pdf https://doaj.org/toc/1991-959X https://doaj.org/toc/1991-9603 doi:10.5194/gmd-6-549-2013 1991-959X 1991-9603 https://doaj.org/article/c1a94d3bbe9241f9ade03a1f7fe4c205 Geoscientific Model Development, Vol 6, Iss 2, Pp 549-561 (2013) Geology QE1-996.5 article 2013 ftdoajarticles https://doi.org/10.5194/gmd-6-549-2013 2022-12-31T02:07:17Z This paper describes the experimental design and model results from a 500 yr fully coupled Community Climate System, version 4, simulation of the mid-Pliocene Warm Period (mPWP) (ca. 3.3–3.0 Ma). We simulate the mPWP using the "alternate" protocol prescribed by the Pliocene Model Intercomparison Project (PlioMIP) for the AOGCM simulation (Experiment 2). Results from the CCSM4 mPWP simulation show a 1.9 °C increase in global mean annual temperature compared to the 1850 preindustrial control, with a polar amplification of ~3 times the global warming. Global precipitation increases slightly by 0.09 mm day −1 and the monsoon rainfall is enhanced, particularly in the Northern Hemisphere (NH). Areal sea ice extent decreases in both hemispheres but persists through the summers. The model simulates a relaxation of the zonal sea surface temperature (SST) gradient in the tropical Pacific, with the El Niño–Southern Oscillation (Niño3.4) ~20% weaker than the preindustrial and exhibiting extended periods of quiescence of up to 150 yr. The maximum Atlantic meridional overturning circulation and northward Atlantic oceanic heat transport are indistinguishable from the control. As compared to PRISM3, CCSM4 overestimates Southern Hemisphere (SH) sea surface temperatures, but underestimates NH warming, particularly in the North Atlantic, suggesting that an increase in northward ocean heat transport would bring CCSM4 SSTs into better alignment with proxy data. Article in Journal/Newspaper North Atlantic Sea ice Directory of Open Access Journals: DOAJ Articles Pacific Geoscientific Model Development 6 2 549 561 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geology QE1-996.5 |
spellingShingle |
Geology QE1-996.5 N. A. Rosenbloom B. L. Otto-Bliesner E. C. Brady P. J. Lawrence Simulating the mid-Pliocene Warm Period with the CCSM4 model |
topic_facet |
Geology QE1-996.5 |
description |
This paper describes the experimental design and model results from a 500 yr fully coupled Community Climate System, version 4, simulation of the mid-Pliocene Warm Period (mPWP) (ca. 3.3–3.0 Ma). We simulate the mPWP using the "alternate" protocol prescribed by the Pliocene Model Intercomparison Project (PlioMIP) for the AOGCM simulation (Experiment 2). Results from the CCSM4 mPWP simulation show a 1.9 °C increase in global mean annual temperature compared to the 1850 preindustrial control, with a polar amplification of ~3 times the global warming. Global precipitation increases slightly by 0.09 mm day −1 and the monsoon rainfall is enhanced, particularly in the Northern Hemisphere (NH). Areal sea ice extent decreases in both hemispheres but persists through the summers. The model simulates a relaxation of the zonal sea surface temperature (SST) gradient in the tropical Pacific, with the El Niño–Southern Oscillation (Niño3.4) ~20% weaker than the preindustrial and exhibiting extended periods of quiescence of up to 150 yr. The maximum Atlantic meridional overturning circulation and northward Atlantic oceanic heat transport are indistinguishable from the control. As compared to PRISM3, CCSM4 overestimates Southern Hemisphere (SH) sea surface temperatures, but underestimates NH warming, particularly in the North Atlantic, suggesting that an increase in northward ocean heat transport would bring CCSM4 SSTs into better alignment with proxy data. |
format |
Article in Journal/Newspaper |
author |
N. A. Rosenbloom B. L. Otto-Bliesner E. C. Brady P. J. Lawrence |
author_facet |
N. A. Rosenbloom B. L. Otto-Bliesner E. C. Brady P. J. Lawrence |
author_sort |
N. A. Rosenbloom |
title |
Simulating the mid-Pliocene Warm Period with the CCSM4 model |
title_short |
Simulating the mid-Pliocene Warm Period with the CCSM4 model |
title_full |
Simulating the mid-Pliocene Warm Period with the CCSM4 model |
title_fullStr |
Simulating the mid-Pliocene Warm Period with the CCSM4 model |
title_full_unstemmed |
Simulating the mid-Pliocene Warm Period with the CCSM4 model |
title_sort |
simulating the mid-pliocene warm period with the ccsm4 model |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/gmd-6-549-2013 https://doaj.org/article/c1a94d3bbe9241f9ade03a1f7fe4c205 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic Sea ice |
genre_facet |
North Atlantic Sea ice |
op_source |
Geoscientific Model Development, Vol 6, Iss 2, Pp 549-561 (2013) |
op_relation |
http://www.geosci-model-dev.net/6/549/2013/gmd-6-549-2013.pdf https://doaj.org/toc/1991-959X https://doaj.org/toc/1991-9603 doi:10.5194/gmd-6-549-2013 1991-959X 1991-9603 https://doaj.org/article/c1a94d3bbe9241f9ade03a1f7fe4c205 |
op_doi |
https://doi.org/10.5194/gmd-6-549-2013 |
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Geoscientific Model Development |
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6 |
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2 |
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549 |
op_container_end_page |
561 |
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