Quantitative summer-temperature reconstructions for the last 2000 years based on pollen-stratigraphical data from northern Fennoscandia
Quantitative reconstructions of mean July temperatures (T (jul)) based on new and previously published pollen-stratigraphical data covering the last 2000 years from 11 lakes in northern Fennoscandia and the Kola Peninsula are presented. T (jul) values are based on a previously published pollen-clima...
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ftucl:oai:eprints.ucl.ac.uk.OAI2:162291 2023-05-15T16:11:41+02:00 Quantitative summer-temperature reconstructions for the last 2000 years based on pollen-stratigraphical data from northern Fennoscandia Bjune, AE Seppa, H Birks, HJB 2009-01 http://discovery.ucl.ac.uk/162291/ unknown SPRINGER J PALEOLIMNOL , 41 (1) 43 - 56. (2009) Pollen stratigraphy Climate Medieval Warm Period Little Ice Age Fennoscandia Holocene climate change TREE-LINE AREA CENTRAL-SOUTHERN NORWAY ACCUMULATION RATE PAR HOLOCENE VEGETATION WESTERN NORWAY CLIMATE RECONSTRUCTIONS WINTER-PRECIPITATION PLANT MACROFOSSILS FINNISH LAPLAND ATLANTIC REGION Article 2009 ftucl 2017-03-09T23:11:01Z Quantitative reconstructions of mean July temperatures (T (jul)) based on new and previously published pollen-stratigraphical data covering the last 2000 years from 11 lakes in northern Fennoscandia and the Kola Peninsula are presented. T (jul) values are based on a previously published pollen-climate transfer function for the region with a root-mean-square error of prediction (RMSEP) of 0.99A degrees C. The most obvious trend in the inferred temperatures from all sites is the general decrease in T (jul) during the last 2000 years. Pollen-inferred T (jul) values on average 0.18 +/- A 0.56A degrees C (n = 91) higher than present (where "present" refers to the last three decades based on pollen-inferred T (jul) in core-top samples) are indicated between 0 and 1100 AD (2000-850 cal year BP), and temperatures -0.2 +/- A 0.47A degrees C (n = 78) below present are inferred between 1100 and 1900 AD (850-50 cal year BP). No consistent temperature peak is observed during the 'Medieval Warm Period', ca. 900-1200 AD (1100-750 cal year BP), but the cooler period between 1100 and 1900 AD (850-50 cal year BP) corresponds in general with the 'Little Ice Age' (LIA). Consistently with independent stable isotopic data, the composite pollen-based record suggests that the coldest periods of the LIA date to 1500-1600 AD (450-350 cal year BP) and 1800-1850 AD (150-100 cal year BP). An abrupt warming occurred at about 1900 AD and the twentieth century is the warmest century since about 1000 AD (950 cal year BP). Article in Journal/Newspaper Fennoscandia kola peninsula Lapland University College London: UCL Discovery Kola Peninsula Norway |
institution |
Open Polar |
collection |
University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
unknown |
topic |
Pollen stratigraphy Climate Medieval Warm Period Little Ice Age Fennoscandia Holocene climate change TREE-LINE AREA CENTRAL-SOUTHERN NORWAY ACCUMULATION RATE PAR HOLOCENE VEGETATION WESTERN NORWAY CLIMATE RECONSTRUCTIONS WINTER-PRECIPITATION PLANT MACROFOSSILS FINNISH LAPLAND ATLANTIC REGION |
spellingShingle |
Pollen stratigraphy Climate Medieval Warm Period Little Ice Age Fennoscandia Holocene climate change TREE-LINE AREA CENTRAL-SOUTHERN NORWAY ACCUMULATION RATE PAR HOLOCENE VEGETATION WESTERN NORWAY CLIMATE RECONSTRUCTIONS WINTER-PRECIPITATION PLANT MACROFOSSILS FINNISH LAPLAND ATLANTIC REGION Bjune, AE Seppa, H Birks, HJB Quantitative summer-temperature reconstructions for the last 2000 years based on pollen-stratigraphical data from northern Fennoscandia |
topic_facet |
Pollen stratigraphy Climate Medieval Warm Period Little Ice Age Fennoscandia Holocene climate change TREE-LINE AREA CENTRAL-SOUTHERN NORWAY ACCUMULATION RATE PAR HOLOCENE VEGETATION WESTERN NORWAY CLIMATE RECONSTRUCTIONS WINTER-PRECIPITATION PLANT MACROFOSSILS FINNISH LAPLAND ATLANTIC REGION |
description |
Quantitative reconstructions of mean July temperatures (T (jul)) based on new and previously published pollen-stratigraphical data covering the last 2000 years from 11 lakes in northern Fennoscandia and the Kola Peninsula are presented. T (jul) values are based on a previously published pollen-climate transfer function for the region with a root-mean-square error of prediction (RMSEP) of 0.99A degrees C. The most obvious trend in the inferred temperatures from all sites is the general decrease in T (jul) during the last 2000 years. Pollen-inferred T (jul) values on average 0.18 +/- A 0.56A degrees C (n = 91) higher than present (where "present" refers to the last three decades based on pollen-inferred T (jul) in core-top samples) are indicated between 0 and 1100 AD (2000-850 cal year BP), and temperatures -0.2 +/- A 0.47A degrees C (n = 78) below present are inferred between 1100 and 1900 AD (850-50 cal year BP). No consistent temperature peak is observed during the 'Medieval Warm Period', ca. 900-1200 AD (1100-750 cal year BP), but the cooler period between 1100 and 1900 AD (850-50 cal year BP) corresponds in general with the 'Little Ice Age' (LIA). Consistently with independent stable isotopic data, the composite pollen-based record suggests that the coldest periods of the LIA date to 1500-1600 AD (450-350 cal year BP) and 1800-1850 AD (150-100 cal year BP). An abrupt warming occurred at about 1900 AD and the twentieth century is the warmest century since about 1000 AD (950 cal year BP). |
format |
Article in Journal/Newspaper |
author |
Bjune, AE Seppa, H Birks, HJB |
author_facet |
Bjune, AE Seppa, H Birks, HJB |
author_sort |
Bjune, AE |
title |
Quantitative summer-temperature reconstructions for the last 2000 years based on pollen-stratigraphical data from northern Fennoscandia |
title_short |
Quantitative summer-temperature reconstructions for the last 2000 years based on pollen-stratigraphical data from northern Fennoscandia |
title_full |
Quantitative summer-temperature reconstructions for the last 2000 years based on pollen-stratigraphical data from northern Fennoscandia |
title_fullStr |
Quantitative summer-temperature reconstructions for the last 2000 years based on pollen-stratigraphical data from northern Fennoscandia |
title_full_unstemmed |
Quantitative summer-temperature reconstructions for the last 2000 years based on pollen-stratigraphical data from northern Fennoscandia |
title_sort |
quantitative summer-temperature reconstructions for the last 2000 years based on pollen-stratigraphical data from northern fennoscandia |
publisher |
SPRINGER |
publishDate |
2009 |
url |
http://discovery.ucl.ac.uk/162291/ |
geographic |
Kola Peninsula Norway |
geographic_facet |
Kola Peninsula Norway |
genre |
Fennoscandia kola peninsula Lapland |
genre_facet |
Fennoscandia kola peninsula Lapland |
op_source |
J PALEOLIMNOL , 41 (1) 43 - 56. (2009) |
_version_ |
1765996844203114496 |