noaa-lake-5466
Baffin Island 1250 Year Summer Temperature Reconstruction
Moore, J.J.; Hughen, K.A.; Miller, G.H.; Overpeck, J.T.
Baffin Island 1250 Year Summer Temperature Reconstruction
2003-10-01
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/5466
Investigator
J.J.
Moore
Investigator
K.A.
Hughen
Investigator
G.H.
Miller
Investigator
J.T.
Overpeck
earth science
paleoclimate
climate reconstructions|paleolimnology
surface air temperature,varve thickness,null,degree Celsius,summer,climate reconstructions|paleolimnology,null,null,N,based on varve thickness
earth science
paleoclimate
climate reconstructions|paleolimnology
age,null,null,year Common Era,null,climate reconstructions|paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
varve thickness,null,null,millimeter,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
reconstruction
earth science
paleoclimate
paleolimnology
physical properties
geoscientificInformation
Air Temperature Reconstruction
1198 cal yr BP
-42 cal yr BP
Complete
66.6667
66.6667
-61.35
-61.35
Continent
North America
Canada
Northwest Territories
Donard Lake>LATITUDE 66.6667>LONGITUDE -61.35
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
Moore, J.J., K.A. Hughen, G.H. Miller, J.T. Overpeck. 2001. Little Ice Age Recorded in Summer Temperatures from Varved Sediments of Donard Lake, Baffin Island, Canada. Journal of Paleolimnology Vol. 25, pp. 503-517
Clastic varved sediments from Donard Lake, in the Cape Dyer region of Baffin Island, provide a 1250 yr record of decadal-to-centennial scale climate variability. Donard Lake experiences strong seasonal fluctuations in runoff and sediment fluxes due to the summer melting of the Caribou Glacier, which presently dominates its catchment. The seasonal variation in sediment supply results in the annual deposition of laminae couplets. A radiocarbon date measured on moss fragments, with a calibrated age of 860 ą 80 yrs before present (BP), is in close agreement with the age based on paired-layer counts. Together with the fabric of the laminae determined from microscope analysis, the age agreement demonstrates that the laminae couplets are annually deposited varves. Comparisons of varve thickness and average summer temperature from nearby Cape Dyer show a significant positive correlation (r= 0.57 for annual records, r = 0.82 for 3-yr averages), indicating that varve thickness reflects changes in average summer temperature. Varve thickness was used to reconstruct average summer temperatures for the past 1250 yrs, and shows abrupt shifts and large amplitude decadal-to-centennial scale variability throughout the record. The most prominent feature of the record is a period of elevated summer temperatures from 1200-1375 AD, followed by cooler conditions from 1375-1820 AD, coincident with the Little Ice Age.
STUDY NOTES: Summer temperature reconstruction based on laminae thickness in sediments from Donard Lake, Baffin Island, Canada.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/baffin/donard_2001.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11