Summer temperature evolution on the Kamchatka Peninsula, Russian Far East, during the past 20 000 years
Little is known about the climate evolution on the Kamchatka Peninsula during the last glacial–interglacial transition as existing climate records do not reach beyond 12 ka BP. In this study, a summer temperature record for the past 20 kyr is presented. Branched glycerol dialkyl glycerol tetraethers...
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ftcopernicus:oai:publications.copernicus.org:cp49956 2023-05-15T16:58:30+02:00 Summer temperature evolution on the Kamchatka Peninsula, Russian Far East, during the past 20 000 years Meyer, Vera D. Hefter, Jens Lohmann, Gerrit Max, Lars Tiedemann, Ralf Mollenhauer, Gesine 2018-09-27 application/pdf https://doi.org/10.5194/cp-13-359-2017 https://cp.copernicus.org/articles/13/359/2017/ eng eng doi:10.5194/cp-13-359-2017 https://cp.copernicus.org/articles/13/359/2017/ eISSN: 1814-9332 Text 2018 ftcopernicus https://doi.org/10.5194/cp-13-359-2017 2020-07-20T16:23:45Z Little is known about the climate evolution on the Kamchatka Peninsula during the last glacial–interglacial transition as existing climate records do not reach beyond 12 ka BP. In this study, a summer temperature record for the past 20 kyr is presented. Branched glycerol dialkyl glycerol tetraethers, terrigenous biomarkers suitable for continental air temperature reconstructions, were analyzed in a sediment core from the western continental margin off Kamchatka in the marginal northwest Pacific (NW Pacific). The record suggests that summer temperatures on Kamchatka during the Last Glacial Maximum (LGM) equaled modern temperatures. We suggest that strong southerly winds associated with a pronounced North Pacific High pressure system over the subarctic NW Pacific accounted for the warm conditions. A comparison with an Earth system model reveals discrepancies between model and proxy-based reconstructions for the LGM temperature and atmospheric circulation in the NW Pacific realm. The deglacial temperature development is characterized by abrupt millennial-scale temperature oscillations. The Bølling–Allerød warm phase and the Younger Dryas cold spell are pronounced events, suggesting a connection to North Atlantic climate variability. Text Kamchatka Kamchatka Peninsula North Atlantic Subarctic Copernicus Publications: E-Journals Kamchatka Peninsula ENVELOPE(160.000,160.000,56.000,56.000) Pacific Climate of the Past 13 4 359 377 |
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Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
Little is known about the climate evolution on the Kamchatka Peninsula during the last glacial–interglacial transition as existing climate records do not reach beyond 12 ka BP. In this study, a summer temperature record for the past 20 kyr is presented. Branched glycerol dialkyl glycerol tetraethers, terrigenous biomarkers suitable for continental air temperature reconstructions, were analyzed in a sediment core from the western continental margin off Kamchatka in the marginal northwest Pacific (NW Pacific). The record suggests that summer temperatures on Kamchatka during the Last Glacial Maximum (LGM) equaled modern temperatures. We suggest that strong southerly winds associated with a pronounced North Pacific High pressure system over the subarctic NW Pacific accounted for the warm conditions. A comparison with an Earth system model reveals discrepancies between model and proxy-based reconstructions for the LGM temperature and atmospheric circulation in the NW Pacific realm. The deglacial temperature development is characterized by abrupt millennial-scale temperature oscillations. The Bølling–Allerød warm phase and the Younger Dryas cold spell are pronounced events, suggesting a connection to North Atlantic climate variability. |
format |
Text |
author |
Meyer, Vera D. Hefter, Jens Lohmann, Gerrit Max, Lars Tiedemann, Ralf Mollenhauer, Gesine |
spellingShingle |
Meyer, Vera D. Hefter, Jens Lohmann, Gerrit Max, Lars Tiedemann, Ralf Mollenhauer, Gesine Summer temperature evolution on the Kamchatka Peninsula, Russian Far East, during the past 20 000 years |
author_facet |
Meyer, Vera D. Hefter, Jens Lohmann, Gerrit Max, Lars Tiedemann, Ralf Mollenhauer, Gesine |
author_sort |
Meyer, Vera D. |
title |
Summer temperature evolution on the Kamchatka Peninsula, Russian Far East, during the past 20 000 years |
title_short |
Summer temperature evolution on the Kamchatka Peninsula, Russian Far East, during the past 20 000 years |
title_full |
Summer temperature evolution on the Kamchatka Peninsula, Russian Far East, during the past 20 000 years |
title_fullStr |
Summer temperature evolution on the Kamchatka Peninsula, Russian Far East, during the past 20 000 years |
title_full_unstemmed |
Summer temperature evolution on the Kamchatka Peninsula, Russian Far East, during the past 20 000 years |
title_sort |
summer temperature evolution on the kamchatka peninsula, russian far east, during the past 20 000 years |
publishDate |
2018 |
url |
https://doi.org/10.5194/cp-13-359-2017 https://cp.copernicus.org/articles/13/359/2017/ |
long_lat |
ENVELOPE(160.000,160.000,56.000,56.000) |
geographic |
Kamchatka Peninsula Pacific |
geographic_facet |
Kamchatka Peninsula Pacific |
genre |
Kamchatka Kamchatka Peninsula North Atlantic Subarctic |
genre_facet |
Kamchatka Kamchatka Peninsula North Atlantic Subarctic |
op_source |
eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-13-359-2017 https://cp.copernicus.org/articles/13/359/2017/ |
op_doi |
https://doi.org/10.5194/cp-13-359-2017 |
container_title |
Climate of the Past |
container_volume |
13 |
container_issue |
4 |
container_start_page |
359 |
op_container_end_page |
377 |
_version_ |
1766050522726400000 |