noaa-other-11179
Baffin Island, Canada 2000 Year Ice Retreat 14C Data
Anderson, R.K.; Miller, G.H.; Briner, J.P.; Lifton, N.A.; DeVogel, S.B.
Baffin Island, Canada 2000 Year Ice Retreat 14C Data
2011-06-12
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/11179
Investigator
R.K.
Anderson
Investigator
G.H.
Miller
Investigator
J.P.
Briner
Investigator
N.A.
Lifton
Investigator
S.B.
DeVogel
earth science
paleoclimate
others
geoscientificInformation
Arctic
225 14C yr BP
225 14C yr BP
306 cal yr BP
306 cal yr BP
Complete
71.04155
71.04155
-74.66817
-74.66817
852
852
Continent
North America
Canada
Nunavut
M09-B107v>LATITUDE 71.04155>LONGITUDE -74.66817
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
Anderson, R.K., G.H. Miller, J.P. Briner, N.A. Lifton,
and S.B. DeVogel. 2008.
A millennial perspective on Arctic warming from 14C
in quartz and plants emerging from beneath ice caps.
Geophysical Research Letters, 35, L01502,
doi:10.1029/2007GL032057.
Observational records show that the area of ice caps
on northern Baffin Island, Arctic Canada has diminished
by more than 50% since 1958. Fifty 14C dates on dead
vegetation emerging beneath receding ice margins document
the persistence of some of these ice caps since at least
350 AD. In situ cosmogenic 14C in rock surfaces, and 14C
in plant macrofossils from lake-sediment cores demonstrate
that the plateau remained ice-free through the middle
Holocene, but has supported ice caps for more than 2000
of the past 2800 years. The rapid disappearance of these
ice caps over the past century, despite decreasing summer
insolation, further demonstrates the unusual character of
20th Century warmth. Widespread ice-cap expansion ~1280 AD
early in the Little Ice Age, and intensified expansion
~1450 AD, coincide with peak stratospheric volcanic aerosol
loading and reduced solar luminosity, suggesting that these
mechanisms may have initiated ice-cap growth, subsequently
maintained by strong positive feedbacks.
STUDY NOTES: Radiocarbon (14C) dates on dead vegetation emerging
beneath receding ice margins on Baffin Island,
Arctic Canada. 14C dates range from ~200 to ~2000
years before present.
Areas sampled lie between ~67°N and 72°N, and between
64°N and 83°W.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/radiocarbon/baffin2008c14.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/radiocarbon/baffin2008c14.xls
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11