North Pacific Holocene Alkenone Sea Surface Temperature Reconstruction Isono, D.; Yamamoto, M.; Irino, T.; Oba, T.; Murayama, M.; Nakamura, T.; Kawahata, H. Isono, D. Yamamoto, M. Irino, T. Oba, T. Murayama, M. Nakamura, T. Kawahata, H. Sea Surface Temperature Reconstruction 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 (age,null,null,calendar kiloyear before present,null,climate reconstructions|paleoceanography,null,null,N,null) earth science/paleoclimate/climate reconstructions|paleoceanography (depth,null,null,centimeter,null,climate reconstructions|paleoceanography,null,null,N,sample midpoint depth) earth science/paleoclimate/climate reconstructions|paleoceanography (sea surface temperature,alkenone unsaturation index,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (alkenone unsaturation index Uk37 prime,sediment,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleocean (MD01-2421>LATITUDE 36.02>LONGITUDE 141.78) Suborbital climate variability during the last glacial period is suggested to have involved a 1500-year pacing cycle, but the expression and spatial distribution of the ~1500-year oscillation during interglacials remains unclear. We generated a multidecade resolution record of alkenone sea surface temperature (SST) in the northwestern Pacific off central Japan during the Holocene. The SST record showed centennial and millennial variability with an amplitude of ~1C throughout the entire Holocene. Spectral analysis for SST variation revealed a statistically significant peak with 1470-year periodicity. The SST variation partly correlated with the variations of ice-rafted hematite-stained grain content in North Atlantic sediments. These findings indicate that the mean latitude of the Kuroshio Extension has varied on a 1500-year cycle, and suggest that a climatic link exists between the North Pacific gyre system and the high-latitude North Atlantic thermohaline circulation. The regular pacing at 1500-year intervals seen throughout both the Holocene and the last glacial period suggests that the oscillation was a response to external forcing. STUDY NOTES: Alkenone unsaturation index and sea surface temperature reconstruction for 3 co-located North Pacific sediment cores over the Holocene NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Isono, D. Investigator : Yamamoto, M. Investigator : Irino, T. Investigator : Oba, T. Investigator : Murayama, M. Investigator : Nakamura, T. Investigator : Kawahata, H. 2018-05-27 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/24250 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/isono2009/isono2009.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/isono2009/isono2009.txt English https://www.ncdc.noaa.gov/paleo/study/24250 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/isono2009/isono2009.txt Dai Isono, Masanobu Yamamoto, Tomohisa Irino, Tadamichi Oba, Masafumi Murayama, Toshio Nakamura, Hodaka Kawahata2009The 1500-year climate oscillation in the midlatitude North Pacific during the HoloceneGeology377591-59410.1130/G25667A.1https://pubs.geoscienceworld.org/gsa/geology/article/37/7/591/30001/The-1500year-climate-oscillation-in-the START YEAR: 10970 cal yr BP * END YEAR: -40 cal yr BP 141.78 36.02 141.78 36.02