North Icelandic Shelf Holocene Alkenone Sea Surface Temperature Bendle, J.A.; Rosell-Melé, A. Bendle, J.A. Rosell-Melé, A. Meridional Overturning Circulation (MOC) Sea Surface Temperature Reconstruction earth science/paleoclimate/climate reconstructions|paleoceanography (sea surface temperature,alkenone unsaturation index,null,degree Celsius,annual,climate reconstructions|paleoceanography,smoothed,null,N,3 point running mean) earth science/paleoclimate/climate reconstructions|paleoceanography (sample identification,null,null,null,null,climate reconstructions|paleoceanography,null,null,C,null) earth science/paleoclimate/climate reconstructions|paleoceanography (depth,null,null,centimeter,null,climate reconstructions|paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (alkenone unsaturation index Uk37 prime,null,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/climate reconstructions|paleoceanography (age,null,null,calendar year before present,null,climate reconstructions|paleoceanography,null,null,N,null) earth science/paleoclimate/climate reconstructions|paleoceanography (sea surface temperature,alkenone unsaturation index,null,degree Celsius,annual,climate reconstructions|paleoceanography,null,null,N,null) earth science/paleoclimate/reconstructions (JR51GC-35>LATITUDE 66.5996>LONGITUDE -17.5766) The palaeoceanography of the northern Icelandic Shelf for the Holocene period was reconstructed from alkenone indices measured in core JR51-GC35. This contains a continuous record of Holocene sedimentation spanning 0 - 10.2 cal. kyr BP with a resolution of ~20 yr/cm. We have identified a general Holocene cooling trend that has superimposed millennial-scale oscillations of >2°C. Their timing is in close agreement with the timing of glacier advances in northern Iceland. For the later half of the Holocene, the alkenone-sea surface temperature (SST) record from JR51-GC35 correlates with proxy data for the strength of NADW formation recorded in cores south of Iceland. This is interpreted as evidence of a close connection existing between north Icelandic sea surface temperatures and the North Atlantic meridonal overturning circulation. The timing of the millennial-scale SST variability in our core off North Iceland is found to be out of phase, or anti-phased, with the SST variability of a record in the eastern Nordic Seas (MD952011). This suggests that the evolution of Holocene climate in the Nordic Seas was more complex than previously proposed; and it is likely to be caused by differential responses of the Irminger and Norwegian Currents and modulated by changes in atmospheric circulation analogous to the North Atlantic Oscillation. STUDY NOTES: Uk37' alkenone content and alkenone sea surface temperature estimates for the Holocene from Core JR51GC-35, Iceland Shelf, North Atlantic. UK37 is converted to SST using the Rosell-Melé et al. (1995) annual SST calibration that is constructed from an extensive data set of NE Atlantic and Nordic Seas core-tops. Cruise (platform): JR 51 (RRS James Clark Ross) Coring system: Gravity Date obtained: 26/8/00 Sample thickness: 1cm Sampling frequency: 4cm Sample dry weight: ca. 2g NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Bendle, J.A. Investigator : Rosell-Melé, A. 2011-04-15 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/10828 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bendle2007/bendle2007.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bendle2007/bendle2007.xls https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bendle2007/bendle2007.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bendle2007/bendle2007.xls English https://www.ncdc.noaa.gov/paleo/study/10828 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bendle2007/bendle2007.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bendle2007/bendle2007.xls Bendle, J.A.P. and A. Rosell-Melé. 2007. High-resolution alkenone sea surface temperature variability on the North Icelandic Shelf: implications for Nordic Seas palaeoclimatic development during the Holocene. The Holocene, Vol. 17, pp. 9-24, January 2007. doi:10.1177/0959683607073269 START YEAR: 10170 cal yr BP * END YEAR: 61 cal yr BP -17.5766 66.5996 -17.5766 66.5996