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. Axford, Y. Andresen, C.S. Andrews, J.T. Belt, S.T Geirsdóttir, A. Massé, G. Miller, G.H. Ólafsdóttir, S. Vare, L.L. 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 earth science/paleoclimate/paleocean (MD99-2263>LATITUDE 66.679>LONGITUDE -24.197) (MD99-2275>LATITUDE 66.551>LONGITUDE -17.699) (B007-328PC>LATITUDE 65.9566>LONGITUDE -21.551) (MD99-2258>LATITUDE 63.963>LONGITUDE -24.443) (MD99-2269>LATITUDE 66.63>LONGITUDE -23.85) (KN158-4-72GGC>LATITUDE 66.673>LONGITUDE -24.192) 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. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Axford, Y. Investigator : Andresen, C.S. Investigator : Andrews, J.T. Investigator : Belt, S.T Investigator : Geirsdóttir, A. Investigator : Massé, G. Investigator : Miller, G.H. Investigator : Ólafsdóttir, S. Investigator : Vare, L.L. 2012-01-05 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/12363 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/axford2011/axford2011.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/axford2011/axford2011.xls https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/axford2011/axford2011.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/axford2011/axford2011.xls English https://www.ncdc.noaa.gov/paleo/study/12363 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/axford2011/axford2011.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/axford2011/axford2011.xls 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 START YEAR: 2129 cal yr BP * END YEAR: 32 cal yr BP -24.443 63.963 -17.699 66.679