Annual-layer thickness, δ¹⁸O and sodium values on Akademii Nauk ice core (AD 900-1998) based on core chronology AN 2012
Understanding recent Arctic climate change requires detailed information on past changes, in particular on a regional scale. The extension of the depth–age relation of the Akademii Nauk (AN) ice core from Severnaya Zemlya (SZ) to the last 1100 yr provides new perspectives on past climate fluctuation...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.824732 2023-05-15T14:25:44+02:00 Annual-layer thickness, δ¹⁸O and sodium values on Akademii Nauk ice core (AD 900-1998) based on core chronology AN 2012 Opel, Thomas Fritzsche, Diedrich Meyer, Hanno LATITUDE: 80.520000 * LONGITUDE: 94.820000 * MINIMUM ELEVATION: 750.0 m * MAXIMUM ELEVATION: 750.0 m 2013-12-18 text/tab-separated-values, 4396 data points https://doi.pangaea.de/10.1594/PANGAEA.824732 https://doi.org/10.1594/PANGAEA.824732 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.824732 https://doi.org/10.1594/PANGAEA.824732 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Opel, Thomas; Fritzsche, Diedrich; Meyer, Hanno (2013): Eurasian Arctic climate over the past millennium as recorded in the Akademii Nauk ice core (Severnaya Zemlya). Climate of the Past, 9(5), 2379-2389, https://doi.org/10.5194/cp-9-2379-2013 Age Akademii Nauk Severnaya Zemlya Russian Arctic AN Annual layer thickness AWI_PerDyn AWI Arctic Land Expedition ICEDRILL Ice drill Ion chromatography IC20 (Dionex Corp.) Mass spectrometer Finnigan Delta-S Permafrost Research (Periglacial Dynamics) @ AWI RU-Land_1999/2001_SevernayaZemly Sodium SZ_1999/2001 δ18O water Dataset 2013 ftpangaea https://doi.org/10.1594/PANGAEA.824732 https://doi.org/10.5194/cp-9-2379-2013 2023-01-20T09:02:08Z Understanding recent Arctic climate change requires detailed information on past changes, in particular on a regional scale. The extension of the depth–age relation of the Akademii Nauk (AN) ice core from Severnaya Zemlya (SZ) to the last 1100 yr provides new perspectives on past climate fluctuations in the Barents and Kara seas region. Here, we present the easternmost high-resolution ice-core climate proxy records (d18O and sodium) from the Arctic. Multi-annual AN d18O data as near-surface air-temperature proxies reveal major temperature changes over the last millennium, including the absolute minimum around 1800 and the unprecedented warming to a double-peak maximum in the early 20th century. The long-term cooling trend in d18O is related to a decline in summer insolation but also to the growth of the AN ice cap as indicated by decreasing sodium concentrations. Neither a pronounced Medieval Climate Anomaly nor a Little Ice Age are detectable in the AN d18O record. In contrast, there is evidence of several abrupt warming and cooling events, such as in the 15th and 16th centuries, partly accompanied by corresponding changes in sodium concentrations. These abrupt changes are assumed to be related to sea-ice cover variability in the Barents and Kara seas region, which might be caused by shifts in atmospheric circulation patterns. Our results indicate a significant impact of internal climate variability on Arctic climate change in the last millennium. Dataset Arctic Arctic Climate change Ice Ice cap ice core permafrost Sea ice Severnaya Zemlya PANGAEA - Data Publisher for Earth & Environmental Science Arctic Severnaya Zemlya ENVELOPE(98.000,98.000,79.500,79.500) ENVELOPE(94.820000,94.820000,80.520000,80.520000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Age Akademii Nauk Severnaya Zemlya Russian Arctic AN Annual layer thickness AWI_PerDyn AWI Arctic Land Expedition ICEDRILL Ice drill Ion chromatography IC20 (Dionex Corp.) Mass spectrometer Finnigan Delta-S Permafrost Research (Periglacial Dynamics) @ AWI RU-Land_1999/2001_SevernayaZemly Sodium SZ_1999/2001 δ18O water |
spellingShingle |
Age Akademii Nauk Severnaya Zemlya Russian Arctic AN Annual layer thickness AWI_PerDyn AWI Arctic Land Expedition ICEDRILL Ice drill Ion chromatography IC20 (Dionex Corp.) Mass spectrometer Finnigan Delta-S Permafrost Research (Periglacial Dynamics) @ AWI RU-Land_1999/2001_SevernayaZemly Sodium SZ_1999/2001 δ18O water Opel, Thomas Fritzsche, Diedrich Meyer, Hanno Annual-layer thickness, δ¹⁸O and sodium values on Akademii Nauk ice core (AD 900-1998) based on core chronology AN 2012 |
topic_facet |
Age Akademii Nauk Severnaya Zemlya Russian Arctic AN Annual layer thickness AWI_PerDyn AWI Arctic Land Expedition ICEDRILL Ice drill Ion chromatography IC20 (Dionex Corp.) Mass spectrometer Finnigan Delta-S Permafrost Research (Periglacial Dynamics) @ AWI RU-Land_1999/2001_SevernayaZemly Sodium SZ_1999/2001 δ18O water |
description |
Understanding recent Arctic climate change requires detailed information on past changes, in particular on a regional scale. The extension of the depth–age relation of the Akademii Nauk (AN) ice core from Severnaya Zemlya (SZ) to the last 1100 yr provides new perspectives on past climate fluctuations in the Barents and Kara seas region. Here, we present the easternmost high-resolution ice-core climate proxy records (d18O and sodium) from the Arctic. Multi-annual AN d18O data as near-surface air-temperature proxies reveal major temperature changes over the last millennium, including the absolute minimum around 1800 and the unprecedented warming to a double-peak maximum in the early 20th century. The long-term cooling trend in d18O is related to a decline in summer insolation but also to the growth of the AN ice cap as indicated by decreasing sodium concentrations. Neither a pronounced Medieval Climate Anomaly nor a Little Ice Age are detectable in the AN d18O record. In contrast, there is evidence of several abrupt warming and cooling events, such as in the 15th and 16th centuries, partly accompanied by corresponding changes in sodium concentrations. These abrupt changes are assumed to be related to sea-ice cover variability in the Barents and Kara seas region, which might be caused by shifts in atmospheric circulation patterns. Our results indicate a significant impact of internal climate variability on Arctic climate change in the last millennium. |
format |
Dataset |
author |
Opel, Thomas Fritzsche, Diedrich Meyer, Hanno |
author_facet |
Opel, Thomas Fritzsche, Diedrich Meyer, Hanno |
author_sort |
Opel, Thomas |
title |
Annual-layer thickness, δ¹⁸O and sodium values on Akademii Nauk ice core (AD 900-1998) based on core chronology AN 2012 |
title_short |
Annual-layer thickness, δ¹⁸O and sodium values on Akademii Nauk ice core (AD 900-1998) based on core chronology AN 2012 |
title_full |
Annual-layer thickness, δ¹⁸O and sodium values on Akademii Nauk ice core (AD 900-1998) based on core chronology AN 2012 |
title_fullStr |
Annual-layer thickness, δ¹⁸O and sodium values on Akademii Nauk ice core (AD 900-1998) based on core chronology AN 2012 |
title_full_unstemmed |
Annual-layer thickness, δ¹⁸O and sodium values on Akademii Nauk ice core (AD 900-1998) based on core chronology AN 2012 |
title_sort |
annual-layer thickness, δ¹⁸o and sodium values on akademii nauk ice core (ad 900-1998) based on core chronology an 2012 |
publisher |
PANGAEA |
publishDate |
2013 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.824732 https://doi.org/10.1594/PANGAEA.824732 |
op_coverage |
LATITUDE: 80.520000 * LONGITUDE: 94.820000 * MINIMUM ELEVATION: 750.0 m * MAXIMUM ELEVATION: 750.0 m |
long_lat |
ENVELOPE(98.000,98.000,79.500,79.500) ENVELOPE(94.820000,94.820000,80.520000,80.520000) |
geographic |
Arctic Severnaya Zemlya |
geographic_facet |
Arctic Severnaya Zemlya |
genre |
Arctic Arctic Climate change Ice Ice cap ice core permafrost Sea ice Severnaya Zemlya |
genre_facet |
Arctic Arctic Climate change Ice Ice cap ice core permafrost Sea ice Severnaya Zemlya |
op_source |
Supplement to: Opel, Thomas; Fritzsche, Diedrich; Meyer, Hanno (2013): Eurasian Arctic climate over the past millennium as recorded in the Akademii Nauk ice core (Severnaya Zemlya). Climate of the Past, 9(5), 2379-2389, https://doi.org/10.5194/cp-9-2379-2013 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.824732 https://doi.org/10.1594/PANGAEA.824732 |
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.824732 https://doi.org/10.5194/cp-9-2379-2013 |
_version_ |
1766298204910911488 |