Late-Quaternary summer temperature changes in the northern-European tree-line region
We present two new quantitative July mean temperature (T-jul) reconstructions from the Arctic tree-line region in the Kola Peninsula in north-western Russia. The reconstructions are based on fossil pollen records and cover the Younger Dryas stadial and the Holocene. The inferred temperatures are les...
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ACADEMIC PRESS INC ELSEVIER SCIENCE
2008
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ftucl:oai:eprints.ucl.ac.uk.OAI2:165173 2023-05-15T15:00:45+02:00 Late-Quaternary summer temperature changes in the northern-European tree-line region Seppa, H MacDonald, GM Birks, HJB Gervais, BR Snyder, JA 2008-05 http://discovery.ucl.ac.uk/165173/ unknown ACADEMIC PRESS INC ELSEVIER SCIENCE QUATERNARY RES , 69 (3) 404 - 412. (2008) pollen Kola Peninsula transfer function Younger Dryas Holocene HOLOCENE CLIMATIC-CHANGE CENTRAL KOLA-PENINSULA FINNISH LAPLAND OXYGEN-ISOTOPE ATMOSPHERIC CIRCULATION ENVIRONMENTAL HISTORY POSTGLACIAL CLIMATE AGE CALIBRATION LAKE-SEDIMENTS Article 2008 ftucl 2016-10-20T22:18:22Z We present two new quantitative July mean temperature (T-jul) reconstructions from the Arctic tree-line region in the Kola Peninsula in north-western Russia. The reconstructions are based on fossil pollen records and cover the Younger Dryas stadial and the Holocene. The inferred temperatures are less reliable during the Younger Dryas because of the poorer fit between the fossil pollen samples and the modem samples in the calibration set than during the Holocene. The results suggest that the Younger Dryas T-jul in the region was 8.0-10.0 degrees C, being 2.0-3.0 degrees C lower than at present. The Holocene summer temperature maximum dates to 7500-6500 cat yr BP, with T-jul about 1.5 degrees C higher than at present. These new records contribute to our understanding of summer temperature changes along the northem-European tree-line region. The Holocene trends are consistent in most of the independent records from the Fennoscandian-Kola tree-line region, with the beginning of the Holocene thermal maximum no sooner than at about 8000 cat yr BR In the few existing temperature-related records farther east in the Russian Arctic tree line, the period of highest summer temperature begins already at about 10,000 cat yr BP. This difference may reflect the strong influence of the Atlantic coastal current on the atmospheric circulation pattern and the thermal behaviour of the tree-line region on the Atlantic seaboard, and the more direct influence of the summer solar insolation on summer temperature in the region east of the Kola Peninsula. (C) 2008 University of Washington. All rights reserved. Article in Journal/Newspaper Arctic Fennoscandian kola peninsula North-Western Russia Lapland University College London: UCL Discovery Arctic Kola Peninsula |
institution |
Open Polar |
collection |
University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
unknown |
topic |
pollen Kola Peninsula transfer function Younger Dryas Holocene HOLOCENE CLIMATIC-CHANGE CENTRAL KOLA-PENINSULA FINNISH LAPLAND OXYGEN-ISOTOPE ATMOSPHERIC CIRCULATION ENVIRONMENTAL HISTORY POSTGLACIAL CLIMATE AGE CALIBRATION LAKE-SEDIMENTS |
spellingShingle |
pollen Kola Peninsula transfer function Younger Dryas Holocene HOLOCENE CLIMATIC-CHANGE CENTRAL KOLA-PENINSULA FINNISH LAPLAND OXYGEN-ISOTOPE ATMOSPHERIC CIRCULATION ENVIRONMENTAL HISTORY POSTGLACIAL CLIMATE AGE CALIBRATION LAKE-SEDIMENTS Seppa, H MacDonald, GM Birks, HJB Gervais, BR Snyder, JA Late-Quaternary summer temperature changes in the northern-European tree-line region |
topic_facet |
pollen Kola Peninsula transfer function Younger Dryas Holocene HOLOCENE CLIMATIC-CHANGE CENTRAL KOLA-PENINSULA FINNISH LAPLAND OXYGEN-ISOTOPE ATMOSPHERIC CIRCULATION ENVIRONMENTAL HISTORY POSTGLACIAL CLIMATE AGE CALIBRATION LAKE-SEDIMENTS |
description |
We present two new quantitative July mean temperature (T-jul) reconstructions from the Arctic tree-line region in the Kola Peninsula in north-western Russia. The reconstructions are based on fossil pollen records and cover the Younger Dryas stadial and the Holocene. The inferred temperatures are less reliable during the Younger Dryas because of the poorer fit between the fossil pollen samples and the modem samples in the calibration set than during the Holocene. The results suggest that the Younger Dryas T-jul in the region was 8.0-10.0 degrees C, being 2.0-3.0 degrees C lower than at present. The Holocene summer temperature maximum dates to 7500-6500 cat yr BP, with T-jul about 1.5 degrees C higher than at present. These new records contribute to our understanding of summer temperature changes along the northem-European tree-line region. The Holocene trends are consistent in most of the independent records from the Fennoscandian-Kola tree-line region, with the beginning of the Holocene thermal maximum no sooner than at about 8000 cat yr BR In the few existing temperature-related records farther east in the Russian Arctic tree line, the period of highest summer temperature begins already at about 10,000 cat yr BP. This difference may reflect the strong influence of the Atlantic coastal current on the atmospheric circulation pattern and the thermal behaviour of the tree-line region on the Atlantic seaboard, and the more direct influence of the summer solar insolation on summer temperature in the region east of the Kola Peninsula. (C) 2008 University of Washington. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Seppa, H MacDonald, GM Birks, HJB Gervais, BR Snyder, JA |
author_facet |
Seppa, H MacDonald, GM Birks, HJB Gervais, BR Snyder, JA |
author_sort |
Seppa, H |
title |
Late-Quaternary summer temperature changes in the northern-European tree-line region |
title_short |
Late-Quaternary summer temperature changes in the northern-European tree-line region |
title_full |
Late-Quaternary summer temperature changes in the northern-European tree-line region |
title_fullStr |
Late-Quaternary summer temperature changes in the northern-European tree-line region |
title_full_unstemmed |
Late-Quaternary summer temperature changes in the northern-European tree-line region |
title_sort |
late-quaternary summer temperature changes in the northern-european tree-line region |
publisher |
ACADEMIC PRESS INC ELSEVIER SCIENCE |
publishDate |
2008 |
url |
http://discovery.ucl.ac.uk/165173/ |
geographic |
Arctic Kola Peninsula |
geographic_facet |
Arctic Kola Peninsula |
genre |
Arctic Fennoscandian kola peninsula North-Western Russia Lapland |
genre_facet |
Arctic Fennoscandian kola peninsula North-Western Russia Lapland |
op_source |
QUATERNARY RES , 69 (3) 404 - 412. (2008) |
_version_ |
1766332827196981248 |