Sea surface temperature calculated from UK'37 and IP25 sea-ice biomarker of sediment core SO201-2-85KL, supplement to: Max, Lars; Belz, Lukas; Tiedemann, Ralf; Fahl, Kirsten; Nürnberg, Dirk; Riethdorf, Jan-Rainer (2014): Rapid shifts in subarctic Pacific climate between 138 and 70 ka. Geology, 42(10), 899-902
During the past decades, remarkable changes in sea-surface temperature (SST) and sea-ice extent have been observed in the marginal seas of the subarctic Pacific. However, little is known about natural climate variability at millennial time scales far beyond instrumental observations. Geological prox...
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ftdatacite:10.1594/pangaea.834397 2023-05-15T17:31:31+02:00 Sea surface temperature calculated from UK'37 and IP25 sea-ice biomarker of sediment core SO201-2-85KL, supplement to: Max, Lars; Belz, Lukas; Tiedemann, Ralf; Fahl, Kirsten; Nürnberg, Dirk; Riethdorf, Jan-Rainer (2014): Rapid shifts in subarctic Pacific climate between 138 and 70 ka. Geology, 42(10), 899-902 Max, Lars Belz, Lukas Tiedemann, Ralf Fahl, Kirsten Nürnberg, Dirk Riethdorf, Jan-Rainer 2014 application/zip https://dx.doi.org/10.1594/pangaea.834397 https://doi.pangaea.de/10.1594/PANGAEA.834397 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1130/g35879.1 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo Collection article Supplementary Collection of Datasets 2014 ftdatacite https://doi.org/10.1594/pangaea.834397 https://doi.org/10.1130/g35879.1 2021-11-05T12:55:41Z During the past decades, remarkable changes in sea-surface temperature (SST) and sea-ice extent have been observed in the marginal seas of the subarctic Pacific. However, little is known about natural climate variability at millennial time scales far beyond instrumental observations. Geological proxy records, such as those derived from marine sediments, offer a unique opportunity to investigate millennial-scale natural climate variability of the Artic and subarctic environments during past glacial-interglacial cycles. Here we provide reconstructions of sea-ice variability inferred from IP25 (Ice Proxy with 25 carbon atoms) sea-ice biomarker and SST fluctuations based on alkenone unsaturation index (UK'37) of the subarctic Pacific realm between 138 and 70 ka. Warmest sea-surface conditions were found during the early Eemian interglacial (128 to 126 ka), exceeding modern SSTs by ~2 °C. The further North Pacific climate evolu- tion is marked by pronounced oscillations in SST and sea-ice extent on millennial time scales, which correspond remarkably well to short-term temperature oscillations known from Green- land and the North Atlantic. These results imply a common forcing, which seems to be closely coupled to dynamics of the Atlantic meridional overturning circulation. However, immediate propagation of such climate fluctuations far beyond the North Atlantic basin suggests a rapid circumpolar coupling mechanism probably acting through the atmosphere, a prerequisite to explain the apparent synchronicity of remote climatic reorganizations in the subarctic Pacific. Article in Journal/Newspaper North Atlantic Sea ice Subarctic DataCite Metadata Store (German National Library of Science and Technology) Pacific |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo |
spellingShingle |
Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo Max, Lars Belz, Lukas Tiedemann, Ralf Fahl, Kirsten Nürnberg, Dirk Riethdorf, Jan-Rainer Sea surface temperature calculated from UK'37 and IP25 sea-ice biomarker of sediment core SO201-2-85KL, supplement to: Max, Lars; Belz, Lukas; Tiedemann, Ralf; Fahl, Kirsten; Nürnberg, Dirk; Riethdorf, Jan-Rainer (2014): Rapid shifts in subarctic Pacific climate between 138 and 70 ka. Geology, 42(10), 899-902 |
topic_facet |
Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo |
description |
During the past decades, remarkable changes in sea-surface temperature (SST) and sea-ice extent have been observed in the marginal seas of the subarctic Pacific. However, little is known about natural climate variability at millennial time scales far beyond instrumental observations. Geological proxy records, such as those derived from marine sediments, offer a unique opportunity to investigate millennial-scale natural climate variability of the Artic and subarctic environments during past glacial-interglacial cycles. Here we provide reconstructions of sea-ice variability inferred from IP25 (Ice Proxy with 25 carbon atoms) sea-ice biomarker and SST fluctuations based on alkenone unsaturation index (UK'37) of the subarctic Pacific realm between 138 and 70 ka. Warmest sea-surface conditions were found during the early Eemian interglacial (128 to 126 ka), exceeding modern SSTs by ~2 °C. The further North Pacific climate evolu- tion is marked by pronounced oscillations in SST and sea-ice extent on millennial time scales, which correspond remarkably well to short-term temperature oscillations known from Green- land and the North Atlantic. These results imply a common forcing, which seems to be closely coupled to dynamics of the Atlantic meridional overturning circulation. However, immediate propagation of such climate fluctuations far beyond the North Atlantic basin suggests a rapid circumpolar coupling mechanism probably acting through the atmosphere, a prerequisite to explain the apparent synchronicity of remote climatic reorganizations in the subarctic Pacific. |
format |
Article in Journal/Newspaper |
author |
Max, Lars Belz, Lukas Tiedemann, Ralf Fahl, Kirsten Nürnberg, Dirk Riethdorf, Jan-Rainer |
author_facet |
Max, Lars Belz, Lukas Tiedemann, Ralf Fahl, Kirsten Nürnberg, Dirk Riethdorf, Jan-Rainer |
author_sort |
Max, Lars |
title |
Sea surface temperature calculated from UK'37 and IP25 sea-ice biomarker of sediment core SO201-2-85KL, supplement to: Max, Lars; Belz, Lukas; Tiedemann, Ralf; Fahl, Kirsten; Nürnberg, Dirk; Riethdorf, Jan-Rainer (2014): Rapid shifts in subarctic Pacific climate between 138 and 70 ka. Geology, 42(10), 899-902 |
title_short |
Sea surface temperature calculated from UK'37 and IP25 sea-ice biomarker of sediment core SO201-2-85KL, supplement to: Max, Lars; Belz, Lukas; Tiedemann, Ralf; Fahl, Kirsten; Nürnberg, Dirk; Riethdorf, Jan-Rainer (2014): Rapid shifts in subarctic Pacific climate between 138 and 70 ka. Geology, 42(10), 899-902 |
title_full |
Sea surface temperature calculated from UK'37 and IP25 sea-ice biomarker of sediment core SO201-2-85KL, supplement to: Max, Lars; Belz, Lukas; Tiedemann, Ralf; Fahl, Kirsten; Nürnberg, Dirk; Riethdorf, Jan-Rainer (2014): Rapid shifts in subarctic Pacific climate between 138 and 70 ka. Geology, 42(10), 899-902 |
title_fullStr |
Sea surface temperature calculated from UK'37 and IP25 sea-ice biomarker of sediment core SO201-2-85KL, supplement to: Max, Lars; Belz, Lukas; Tiedemann, Ralf; Fahl, Kirsten; Nürnberg, Dirk; Riethdorf, Jan-Rainer (2014): Rapid shifts in subarctic Pacific climate between 138 and 70 ka. Geology, 42(10), 899-902 |
title_full_unstemmed |
Sea surface temperature calculated from UK'37 and IP25 sea-ice biomarker of sediment core SO201-2-85KL, supplement to: Max, Lars; Belz, Lukas; Tiedemann, Ralf; Fahl, Kirsten; Nürnberg, Dirk; Riethdorf, Jan-Rainer (2014): Rapid shifts in subarctic Pacific climate between 138 and 70 ka. Geology, 42(10), 899-902 |
title_sort |
sea surface temperature calculated from uk'37 and ip25 sea-ice biomarker of sediment core so201-2-85kl, supplement to: max, lars; belz, lukas; tiedemann, ralf; fahl, kirsten; nürnberg, dirk; riethdorf, jan-rainer (2014): rapid shifts in subarctic pacific climate between 138 and 70 ka. geology, 42(10), 899-902 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2014 |
url |
https://dx.doi.org/10.1594/pangaea.834397 https://doi.pangaea.de/10.1594/PANGAEA.834397 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic Sea ice Subarctic |
genre_facet |
North Atlantic Sea ice Subarctic |
op_relation |
https://dx.doi.org/10.1130/g35879.1 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.834397 https://doi.org/10.1130/g35879.1 |
_version_ |
1766129150147428352 |