Can uncertainties in sea ice albedo reconcile patterns of data-model discord for the Pliocene and 20th/21st centuries?
General Circulation Model simulations of the mid-Pliocene warm period (mPWP, 3.264 to 3.025 Myr ago) currently underestimate the level of warming that proxy data suggest existed at high latitudes, with discrepancies of up to 11°C for sea surface temperature estimates and 17°C for surface air tempera...
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ftucl:oai:eprints.ucl.ac.uk.OAI2:1426769 2023-12-24T10:07:43+01:00 Can uncertainties in sea ice albedo reconcile patterns of data-model discord for the Pliocene and 20th/21st centuries? Howell, FW Haywood, AM Dolan, AM Dowsett, HJ Francis, JE Hill, DJ Pickering, SJ Pope, JO Salzmann, U Wade, BS 2014-03-28 text https://discovery.ucl.ac.uk/id/eprint/1426769/1/Wade_Howell%20et%20al%202014.pdf https://discovery.ucl.ac.uk/id/eprint/1426769/ eng eng AMER GEOPHYSICAL UNION https://discovery.ucl.ac.uk/id/eprint/1426769/1/Wade_Howell%20et%20al%202014.pdf https://discovery.ucl.ac.uk/id/eprint/1426769/ open Geophysical Research Letters , 41 (6) pp. 2011-2018. (2014) Science & Technology Physical Sciences Geosciences Multidisciplinary Geology albedo paleoclimate modeling Pliocene sea ice SURFACE TEMPERATURES INTERCOMPARISON PROJECT ARCTIC-OCEAN CLIMATE RECONSTRUCTION AMPLIFICATION Article 2014 ftucl 2023-11-27T13:07:31Z General Circulation Model simulations of the mid-Pliocene warm period (mPWP, 3.264 to 3.025 Myr ago) currently underestimate the level of warming that proxy data suggest existed at high latitudes, with discrepancies of up to 11°C for sea surface temperature estimates and 17°C for surface air temperature estimates. Sea ice has a strong influence on high-latitude climates, partly due to the albedo feedback. We present results demonstrating the effects of reductions in minimum sea ice albedo limits in general circulation model simulations of the mPWP. While mean annual surface air temperature increases of up to 6°C are observed in the Arctic, the maximum decrease in model-data discrepancies is just 0.81°C. Mean annual sea surface temperatures increase by up to 2°C, with a maximum model-data discrepancy improvement of 1.31°C. It is also suggested that the simulation of observed 21st century sea ice decline could be influenced by the adjustment of the sea ice albedo parameterization. Article in Journal/Newspaper albedo Arctic Arctic Ocean Sea ice University College London: UCL Discovery Arctic Arctic Ocean |
institution |
Open Polar |
collection |
University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
English |
topic |
Science & Technology Physical Sciences Geosciences Multidisciplinary Geology albedo paleoclimate modeling Pliocene sea ice SURFACE TEMPERATURES INTERCOMPARISON PROJECT ARCTIC-OCEAN CLIMATE RECONSTRUCTION AMPLIFICATION |
spellingShingle |
Science & Technology Physical Sciences Geosciences Multidisciplinary Geology albedo paleoclimate modeling Pliocene sea ice SURFACE TEMPERATURES INTERCOMPARISON PROJECT ARCTIC-OCEAN CLIMATE RECONSTRUCTION AMPLIFICATION Howell, FW Haywood, AM Dolan, AM Dowsett, HJ Francis, JE Hill, DJ Pickering, SJ Pope, JO Salzmann, U Wade, BS Can uncertainties in sea ice albedo reconcile patterns of data-model discord for the Pliocene and 20th/21st centuries? |
topic_facet |
Science & Technology Physical Sciences Geosciences Multidisciplinary Geology albedo paleoclimate modeling Pliocene sea ice SURFACE TEMPERATURES INTERCOMPARISON PROJECT ARCTIC-OCEAN CLIMATE RECONSTRUCTION AMPLIFICATION |
description |
General Circulation Model simulations of the mid-Pliocene warm period (mPWP, 3.264 to 3.025 Myr ago) currently underestimate the level of warming that proxy data suggest existed at high latitudes, with discrepancies of up to 11°C for sea surface temperature estimates and 17°C for surface air temperature estimates. Sea ice has a strong influence on high-latitude climates, partly due to the albedo feedback. We present results demonstrating the effects of reductions in minimum sea ice albedo limits in general circulation model simulations of the mPWP. While mean annual surface air temperature increases of up to 6°C are observed in the Arctic, the maximum decrease in model-data discrepancies is just 0.81°C. Mean annual sea surface temperatures increase by up to 2°C, with a maximum model-data discrepancy improvement of 1.31°C. It is also suggested that the simulation of observed 21st century sea ice decline could be influenced by the adjustment of the sea ice albedo parameterization. |
format |
Article in Journal/Newspaper |
author |
Howell, FW Haywood, AM Dolan, AM Dowsett, HJ Francis, JE Hill, DJ Pickering, SJ Pope, JO Salzmann, U Wade, BS |
author_facet |
Howell, FW Haywood, AM Dolan, AM Dowsett, HJ Francis, JE Hill, DJ Pickering, SJ Pope, JO Salzmann, U Wade, BS |
author_sort |
Howell, FW |
title |
Can uncertainties in sea ice albedo reconcile patterns of data-model discord for the Pliocene and 20th/21st centuries? |
title_short |
Can uncertainties in sea ice albedo reconcile patterns of data-model discord for the Pliocene and 20th/21st centuries? |
title_full |
Can uncertainties in sea ice albedo reconcile patterns of data-model discord for the Pliocene and 20th/21st centuries? |
title_fullStr |
Can uncertainties in sea ice albedo reconcile patterns of data-model discord for the Pliocene and 20th/21st centuries? |
title_full_unstemmed |
Can uncertainties in sea ice albedo reconcile patterns of data-model discord for the Pliocene and 20th/21st centuries? |
title_sort |
can uncertainties in sea ice albedo reconcile patterns of data-model discord for the pliocene and 20th/21st centuries? |
publisher |
AMER GEOPHYSICAL UNION |
publishDate |
2014 |
url |
https://discovery.ucl.ac.uk/id/eprint/1426769/1/Wade_Howell%20et%20al%202014.pdf https://discovery.ucl.ac.uk/id/eprint/1426769/ |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
albedo Arctic Arctic Ocean Sea ice |
genre_facet |
albedo Arctic Arctic Ocean Sea ice |
op_source |
Geophysical Research Letters , 41 (6) pp. 2011-2018. (2014) |
op_relation |
https://discovery.ucl.ac.uk/id/eprint/1426769/1/Wade_Howell%20et%20al%202014.pdf https://discovery.ucl.ac.uk/id/eprint/1426769/ |
op_rights |
open |
_version_ |
1786214683868397568 |