noaa-ocean-12363
Iceland 2000 Year Multiproxy Sediment Data
Axford, Y.; Andresen, C.S.; Andrews, J.T.; Belt, S.T; Geirsdóttir, A.; Massé, G.; Miller, G.H.; Ólafsdóttir, S.; Vare, L.L.
Iceland 2000 Year Multiproxy Sediment Data
2012-01-05
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/12363
Investigator
Y.
Axford
Investigator
C.S.
Andresen
Investigator
J.T.
Andrews
Investigator
S.T
Belt
Investigator
A.
Geirsdóttir
Investigator
G.
Massé
Investigator
G.H.
Miller
Investigator
S.
Ólafsdóttir
Investigator
L.L.
Vare
earth science
paleoclimate
paleoceanography
age,null,null,calendar year before present,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
ice proxy with 25 carbon atoms,sediment,null,unspecified unit,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
quartz,sediment,null,percent,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
calcite,sediment,null,percent,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
depth,null,null,centimeter,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
age,null,null,year Common Era,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleocean
geochemistry
earth science
paleoclimate
paleocean
oxygen isotopes
geoscientificInformation
2129 cal yr BP
32 cal yr BP
Complete
63.963
66.679
-24.443
-17.699
-470
-94
Ocean
Atlantic Ocean
North Atlantic Ocean
MD99-2263>LATITUDE 66.679>LONGITUDE -24.197
Ocean
Atlantic Ocean
North Atlantic Ocean
MD99-2275>LATITUDE 66.551>LONGITUDE -17.699
Ocean
Atlantic Ocean
North Atlantic Ocean
B007-328PC>LATITUDE 65.9566>LONGITUDE -21.551
Ocean
Atlantic Ocean
North Atlantic Ocean
MD99-2258>LATITUDE 63.963>LONGITUDE -24.443
Ocean
Atlantic Ocean
North Atlantic Ocean
MD99-2269>LATITUDE 66.63>LONGITUDE -23.85
Ocean
Atlantic Ocean
North Atlantic Ocean
KN158-4-72GGC>LATITUDE 66.673>LONGITUDE -24.192
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
Axford, Y., C.S. Andresen, J.T. Andrews, S.T. Belt, A. Geirsdóttir,
G. Massé, G.H. Miller, S. Ólafsdóttir, and L.L. Vare. 2011.
Do paleoclimate proxies agree? A test comparing 19 late Holocene
climate and sea-ice reconstructions from Icelandic marine
and lake sediments.
Journal of Quaternary Science, Vol. 26, Issue 6, pp. 645-656,
August 2011. DOI: 10.1002/jqs.1487
Geochemical, mineralogical and biological indicators preserved
in sediments are widely used to reconstruct past climate change,
but proxies differ in the degree to which their utility as climate
indicators has been validated via laboratory experiments, modern
spatial calibrations, or down-core comparisons with instrumental
climate data. Multi-proxy studies provide another means
of evaluating interpretations of proxies. This paper presents
a multi-proxy assessment comparing 19 sub-centennially resolved
late Holocene proxy records, covering the period 300-1900 AD,
from seven Icelandic marine and lacustrine core sites.
We employ simple statistical comparisons between proxy
reconstructions to evaluate their correlations over time
and, ultimately, their utility as proxies for regional climate.
Proxies examined include oxygen isotopic composition of benthic
and planktonic foraminifera, abundance of the sea-ice biomarker
IP25, allochthonous quartz in marine sediments (a proxy for
drift ice around Iceland), marine carbonate abundance,
total organic carbon concentration, chironomid assemblages,
lacustrine biogenic silica and carbon/nitrogen ratios in lake
sediments. Most of the examined proxy records, including
temperature and sea-ice proxies, correlate strongly with
each other over multi-centennial timescales, and thus do appear
to record changes in regional climate.
STUDY NOTES: These data were assembled and studied in the Axford et al. 2011 paper.
The original data were resampled at 100-yr intervals using AnalySeries.
In this paper the data set also included proxy data from Iceland lakes
but these data are not included. For the analysis on 6 cores,
given the different range of measurements, the data were normalized
(mean = 0±1). The data include quartz wt%, IP25, TOC%, carbonate
(calcite)%, and 18O on foraminifera. Data from MD99-2258, SW Iceland,
show little evidence for the presence of sea ice.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/axford2011/axford2011.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/axford2011/axford2011.xls
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11