Sea surface temperature calculated from UK'37 and IP25 sea-ice biomarker of sediment core SO201-2-85KL
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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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.834397 2023-05-15T17:31:18+02:00 Sea surface temperature calculated from UK'37 and IP25 sea-ice biomarker of sediment core SO201-2-85KL Max, Lars Belz, Lukas Tiedemann, Ralf Fahl, Kirsten Nürnberg, Dirk Riethdorf, Jan-Rainer LATITUDE: 57.505000 * LONGITUDE: 170.413167 * DATE/TIME START: 2009-09-21T08:05:00 * DATE/TIME END: 2009-09-21T08:49:00 2014-07-25 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.834397 https://doi.org/10.1594/PANGAEA.834397 en eng PANGAEA Belz, Lukas (2013): Comparison of Eemian and Holocene sea surface temperatures in the Bering Sea including terminations II and I. Master Thesis, Department of Geosciences, University of Bremen, 45 pp, hdl:10013/epic.0c5ac7f6-5963-4df5-bc56-1b2d188280aa https://doi.pangaea.de/10.1594/PANGAEA.834397 https://doi.org/10.1594/PANGAEA.834397 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY 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, https://doi.org/10.1130/G35879.1 AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI Dataset 2014 ftpangaea https://doi.org/10.1594/PANGAEA.834397 https://doi.org/10.1130/G35879.1 2023-01-20T07:33:19Z 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. Dataset North Atlantic Sea ice Subarctic PANGAEA - Data Publisher for Earth & Environmental Science Pacific ENVELOPE(170.413167,170.413167,57.505000,57.505000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
spellingShingle |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI 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 |
topic_facet |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
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 |
Dataset |
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 |
title_short |
Sea surface temperature calculated from UK'37 and IP25 sea-ice biomarker of sediment core SO201-2-85KL |
title_full |
Sea surface temperature calculated from UK'37 and IP25 sea-ice biomarker of sediment core SO201-2-85KL |
title_fullStr |
Sea surface temperature calculated from UK'37 and IP25 sea-ice biomarker of sediment core SO201-2-85KL |
title_full_unstemmed |
Sea surface temperature calculated from UK'37 and IP25 sea-ice biomarker of sediment core SO201-2-85KL |
title_sort |
sea surface temperature calculated from uk'37 and ip25 sea-ice biomarker of sediment core so201-2-85kl |
publisher |
PANGAEA |
publishDate |
2014 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.834397 https://doi.org/10.1594/PANGAEA.834397 |
op_coverage |
LATITUDE: 57.505000 * LONGITUDE: 170.413167 * DATE/TIME START: 2009-09-21T08:05:00 * DATE/TIME END: 2009-09-21T08:49:00 |
long_lat |
ENVELOPE(170.413167,170.413167,57.505000,57.505000) |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic Sea ice Subarctic |
genre_facet |
North Atlantic Sea ice Subarctic |
op_source |
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, https://doi.org/10.1130/G35879.1 |
op_relation |
Belz, Lukas (2013): Comparison of Eemian and Holocene sea surface temperatures in the Bering Sea including terminations II and I. Master Thesis, Department of Geosciences, University of Bremen, 45 pp, hdl:10013/epic.0c5ac7f6-5963-4df5-bc56-1b2d188280aa https://doi.pangaea.de/10.1594/PANGAEA.834397 https://doi.org/10.1594/PANGAEA.834397 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.834397 https://doi.org/10.1130/G35879.1 |
_version_ |
1766128813529366528 |