Can oceanic paleothermometers reconstruct the Atlantic Multidecadal Oscillation?
Instrumental records of the North Atlantic sea surface temperature reveal a large-scale low frequency mode of variability that has become known as the Atlantic Multidecadal Oscillation (AMO). Proxy and modelling studies have demonstrated the important consequences of the AMO on other components of t...
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ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/67533 2024-01-14T10:09:06+01:00 Can oceanic paleothermometers reconstruct the Atlantic Multidecadal Oscillation? Heslop, David Paul, A http://hdl.handle.net/1885/67533 https://doi.org/10.5194/cp-7-151-2011 https://openresearch-repository.anu.edu.au/bitstream/1885/67533/5/C1-11-Can_oceanic_paleothermometers_reconstruct.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/67533/7/01_Heslop_Can_oceanic_paleothermometers_2011.pdf.jpg unknown Copernicus GmbH 1814-9324 http://hdl.handle.net/1885/67533 doi:10.5194/cp-7-151-2011 https://openresearch-repository.anu.edu.au/bitstream/1885/67533/5/C1-11-Can_oceanic_paleothermometers_reconstruct.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/67533/7/01_Heslop_Can_oceanic_paleothermometers_2011.pdf.jpg Author/s retain copyright Climate of the Past Keywords: Atlantic Multidecadal Oscillation calcite climate modeling coral error analysis foraminifera paleoceanography paleoclimate paleotemperature proxy climate record reconstruction sea surface temperature signal-to-noise ratio temperature anomaly Journal article ftanucanberra https://doi.org/10.5194/cp-7-151-2011 2023-12-15T09:35:47Z Instrumental records of the North Atlantic sea surface temperature reveal a large-scale low frequency mode of variability that has become known as the Atlantic Multidecadal Oscillation (AMO). Proxy and modelling studies have demonstrated the important consequences of the AMO on other components of the climate system both within and outside the Atlantic region. Over longer time scales, the past behavior of the AMO is predominantly constrained by terrestrial proxies and only a limited number of records are available from the marine realm itself. Here we use an Earth System-Climate Model of intermediate complexity to simulate AMO-type behavior in the Atlantic with a specific focus placed on the ability of ocean paleothermometers to capture the associated surface and subsurface temperature variability. Given their lower prediction errors and annual resolution, coral-based proxies of sea surface temperature appear to be capable of reconstructing the temperature variations associated with the past AMO with an adequate signal-to-noise ratio. In contrast, the relatively high prediction error and low temporal resolution of sediment-based proxies, such as the composition of foraminiferal calcite, limits their ability to produce interpretable records of past temperature anomalies corresponding to AMO activity. Whilst the presented results will inevitably be model-dependent to some degree, the statistical framework is model-independent and can be applied to a wide variety of scenarios. Article in Journal/Newspaper North Atlantic Australian National University: ANU Digital Collections Climate of the Past 7 1 151 159 |
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Australian National University: ANU Digital Collections |
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ftanucanberra |
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unknown |
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Keywords: Atlantic Multidecadal Oscillation calcite climate modeling coral error analysis foraminifera paleoceanography paleoclimate paleotemperature proxy climate record reconstruction sea surface temperature signal-to-noise ratio temperature anomaly |
spellingShingle |
Keywords: Atlantic Multidecadal Oscillation calcite climate modeling coral error analysis foraminifera paleoceanography paleoclimate paleotemperature proxy climate record reconstruction sea surface temperature signal-to-noise ratio temperature anomaly Heslop, David Paul, A Can oceanic paleothermometers reconstruct the Atlantic Multidecadal Oscillation? |
topic_facet |
Keywords: Atlantic Multidecadal Oscillation calcite climate modeling coral error analysis foraminifera paleoceanography paleoclimate paleotemperature proxy climate record reconstruction sea surface temperature signal-to-noise ratio temperature anomaly |
description |
Instrumental records of the North Atlantic sea surface temperature reveal a large-scale low frequency mode of variability that has become known as the Atlantic Multidecadal Oscillation (AMO). Proxy and modelling studies have demonstrated the important consequences of the AMO on other components of the climate system both within and outside the Atlantic region. Over longer time scales, the past behavior of the AMO is predominantly constrained by terrestrial proxies and only a limited number of records are available from the marine realm itself. Here we use an Earth System-Climate Model of intermediate complexity to simulate AMO-type behavior in the Atlantic with a specific focus placed on the ability of ocean paleothermometers to capture the associated surface and subsurface temperature variability. Given their lower prediction errors and annual resolution, coral-based proxies of sea surface temperature appear to be capable of reconstructing the temperature variations associated with the past AMO with an adequate signal-to-noise ratio. In contrast, the relatively high prediction error and low temporal resolution of sediment-based proxies, such as the composition of foraminiferal calcite, limits their ability to produce interpretable records of past temperature anomalies corresponding to AMO activity. Whilst the presented results will inevitably be model-dependent to some degree, the statistical framework is model-independent and can be applied to a wide variety of scenarios. |
format |
Article in Journal/Newspaper |
author |
Heslop, David Paul, A |
author_facet |
Heslop, David Paul, A |
author_sort |
Heslop, David |
title |
Can oceanic paleothermometers reconstruct the Atlantic Multidecadal Oscillation? |
title_short |
Can oceanic paleothermometers reconstruct the Atlantic Multidecadal Oscillation? |
title_full |
Can oceanic paleothermometers reconstruct the Atlantic Multidecadal Oscillation? |
title_fullStr |
Can oceanic paleothermometers reconstruct the Atlantic Multidecadal Oscillation? |
title_full_unstemmed |
Can oceanic paleothermometers reconstruct the Atlantic Multidecadal Oscillation? |
title_sort |
can oceanic paleothermometers reconstruct the atlantic multidecadal oscillation? |
publisher |
Copernicus GmbH |
url |
http://hdl.handle.net/1885/67533 https://doi.org/10.5194/cp-7-151-2011 https://openresearch-repository.anu.edu.au/bitstream/1885/67533/5/C1-11-Can_oceanic_paleothermometers_reconstruct.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/67533/7/01_Heslop_Can_oceanic_paleothermometers_2011.pdf.jpg |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Climate of the Past |
op_relation |
1814-9324 http://hdl.handle.net/1885/67533 doi:10.5194/cp-7-151-2011 https://openresearch-repository.anu.edu.au/bitstream/1885/67533/5/C1-11-Can_oceanic_paleothermometers_reconstruct.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/67533/7/01_Heslop_Can_oceanic_paleothermometers_2011.pdf.jpg |
op_rights |
Author/s retain copyright |
op_doi |
https://doi.org/10.5194/cp-7-151-2011 |
container_title |
Climate of the Past |
container_volume |
7 |
container_issue |
1 |
container_start_page |
151 |
op_container_end_page |
159 |
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1788063572254785536 |