Cariaco Basin 2000-year seasonal Mg/Ca-SST Reconstruction Wurtzel, J.B.; Black, D.E.; Thunell, R.C.; Peterson, L.C.; Tappa, E.J.; Rahman, S. Wurtzel, J.B. Black, D.E. Thunell, R.C. Peterson, L.C. Tappa, E.J. Rahman, S. Sea Surface Temperature Reconstruction earth science/paleoclimate/paleoceanography (magnesium/calcium,Globigerinoides ruber pink,null,millimole per mole,null,paleoceanography,null,inductively-coupled plasma atomic emission spectroscopy,N,null) earth science/paleoclimate/climate reconstructions|paleoceanography (sea surface temperature,magnesium/calcium,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,using Black'07; Globigerina bulloides) earth science/paleoclimate/climate reconstructions|paleoceanography (sea surface temperature,magnesium/calcium,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,using Black'07; Globigerinoides ruber pink) 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/paleoceanography (magnesium/calcium,Globigerina bulloides,null,millimole per mole,null,paleoceanography,null,inductively-coupled plasma atomic emission spectroscopy,N,null) earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean (PL07-73BC>LATITUDE 10.77>LONGITUDE -64.77) (PL07-72GGC>LATITUDE 10.762833>LONGITUDE -64.704167) (Cariaco Basin>LATITUDE >LONGITUDE ) (CAR25-1>LATITUDE 10.6675>LONGITUDE -64.650167) We present a high-resolution Mg/Ca reconstruction of tropical Atlantic sea surface temperatures (SSTs) spanning the last 2000?years using seasonally representative foraminifera from the Cariaco Basin. The range of summer/fall SST over this interval is restricted to 1.5°C, while winter/spring SST varies by 4.5°C over the same time period suggesting that boreal winter variations control interannual SST variability in the tropical North Atlantic. Antiphasing between the two data sets, including a large divergence in the seasonal records circa 900 Common Era, can be explained by changes in Atlantic meridional overturning circulation and associated changes in surface/subsurface temperatures in the tropical North Atlantic as well as resultant changes in trade wind belt location and intensity. A statistically significant but nonlinear relation exists between reconstructed winter/spring temperatures and solar variability. STUDY NOTES: Spliced composite data record and 3 sets of individual core data. No SST available prior to 20BC, Composite record is spliced together using individual core age models (no depth available for full record). NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Wurtzel, J.B. Investigator : Black, D.E. Investigator : Thunell, R.C. Investigator : Peterson, L.C. Investigator : Tappa, E.J. Investigator : Rahman, S. 2014-01-21 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/15954 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/wurtzel2013/wurtzel2013-car25.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/wurtzel2013/wurtzel2013-composite.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/wurtzel2013/wurtzel2013-73bc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/wurtzel2013/wurtzel2013-72ggc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/wurtzel2013/wurtzel2013-car25.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/wurtzel2013/wurtzel2013-composite.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/wurtzel2013/wurtzel2013-73bc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/wurtzel2013/wurtzel2013-72ggc.txt English https://www.ncdc.noaa.gov/paleo/study/15954 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/wurtzel2013/wurtzel2013-car25.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/wurtzel2013/wurtzel2013-composite.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/wurtzel2013/wurtzel2013-73bc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/wurtzel2013/wurtzel2013-72ggc.txt Wurtzel, J.B., D.E. Black, R.C. Thunell, L.C. Peterson, E.J. Tappa, and S. Rahman 2013Mechanisms of Southern Caribbean SST Variability over the Last Two MillenniaGeophysical Research Letters40225954-595810.1002/2013GL058458 START YEAR: -60 AD * END YEAR: 2008 AD -64.77 10.6675 -64.65 10.77