noaa-lake-13458
Kongressvatnet, Svalbard, 1800 Year Lake Sediment Alkenone Paleotemperature
D'Andrea, W.J.; Vaillencourt, D.A.; Balascio, N.L.; Werner, A.; Roof, S.R.; Retelle, M.J.; Bradley, R.S.
Kongressvatnet, Svalbard, 1800 Year Lake Sediment Alkenone Paleotemperature
2012-10-22
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/13458
Investigator
W.J.
D'Andrea
Investigator
D.A.
Vaillencourt
Investigator
N.L.
Balascio
Investigator
A.
Werner
Investigator
S.R.
Roof
Investigator
M.J.
Retelle
Investigator
R.S.
Bradley
earth science
paleoclimate
climate reconstructions|paleolimnology
surface temperature,alkenone unsaturation index,null,degree Celsius,Jun-Aug,climate reconstructions|paleolimnology,null,null,N,null
earth science
paleoclimate
climate reconstructions|paleolimnology
age,null,null,year Common Era,null,climate reconstructions|paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
alkenone unsaturation index Uk37,null,null,dimensionless,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
reconstruction
earth science
paleoclimate
paleolimnology
geochemistry
geoscientificInformation
Air Temperature Reconstruction
Arctic
Little Ice Age (LIA)
Medieval Climate Anomaly (MCA)
250 AD
2008 AD
1700 cal yr BP
-58 cal yr BP
Complete
78.0217
78.0217
13.9311
13.9311
Continent
Europe
Northern Europe
Scandanavia
Norway
Kongressvatnet>LATITUDE 78.0217>LONGITUDE 13.9311
None
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English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
D'Andrea, W.J., D.A. Vaillencourt, N.L. Balascio, A. Werner, S.R. Roof, M. Retelle, and R.S. Bradley. 2012.
Mild Little Ice Age and unprecedented recent warmth in an 1800 year lake sediment record from Svalbard.
Geology, November 2012, v. 40, p. 1007-1010.
DOI: 10.1130/G33365.1
The Arctic region is subject to a great amplitude of climate variability and is currently undergoing large-scale changes due in part to anthropogenic global warming. Accurate projections of future change depend on anticipating the response of the Arctic climate system to forcing, and understanding how the response to human forcing will interact with natural climate variations. The Svalbard Archipelago occupies an important location for studying patterns and causes of Arctic climate variability; however, available paleoclimate records from Svalbard are of restricted use due to limitations of existing climate proxies. Here we present a sub-decadal- to multidecadal-scale record of summer temperature for the past 1800 yr from lake sediments of Kongressvatnet on West Spitsbergen, Svalbard, based on the first instrumental calibration of the alkenone paleothermometer. The age model for the High Arctic lake sediments is based on 210Pb, plutonium activity, and the first application of tephrochronology to lake sediments in this region. We find that the summer warmth of the past 50 yr recorded in both the instrumental and alkenone records was unmatched in West Spitsbergen in the course of the past 1800 yr, including during the Medieval Climate Anomaly, and that summers during the Little Ice Age (LIA) of the 18th and 19th centuries on Svalbard were not particularly cold, even though glaciers occupied their maximum Holocene extent. Our results suggest that increased wintertime precipitation, rather than cold temperatures, was responsible for LIA glaciations on Svalbard and that increased heat transport into the Arctic via the West Spitsbergen Current began ca. A.D. 1600.
STUDY NOTES: 1800-year UK37 and inferred summer temperature reconstruction based on alkenone unsaturation in lake Kongressvatnet, western Svalbard
Included data:
UK37 measurements, inferred temperature, depth, age
UK37 calibration data table
Major oxides from all measured isolated tephra grains
Age-depth model data (210Pb & 239+240Pu ages and tephra ages)
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/norway/kongressvatnet2012.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11