John Smith's Bay Reef, Bermuda, Coral del11B Data Goodkin, N.F.; Wang, B.-S.; You, C.-F.; Hughen, K.A.; Grumet-Prouty, N.; Bates, N.R.; Doney, S.C. Goodkin, N.F. Wang, B.-S. You, C.-F. Hughen, K.A. Grumet-Prouty, N. Bates, N.R. Doney, S.C. North Atlantic Oscillation earth science/paleoclimate/corals and sclerosponges (age,null,null,year Common Era,null,corals and sclerosponges,null,null,N,null) earth science/paleoclimate/corals and sclerosponges (delta 11B,Diploria labyrinthiformis,null,per mil SRM 951,null,corals and sclerosponges,raw,inductively-coupled plasma mass spectrometry,N,null) earth science/paleoclimate/corals and sclerosponges (John Smith's Bay>LATITUDE 32.316667>LONGITUDE -64.716667) The oceans absorb anthropogenic CO2 from the atmosphere, lowering surface ocean pH, a concern for calcifying marine organisms. The impact of ocean acidification is challenging to predict as each species appears to respond differently and because our knowledge of natural changes to ocean pH is limited in both time and space. Here we reconstruct 222?years of biennial seawater pH variability in the Sargasso Sea from a brain coral, Diploria labyrinthiformis. Using hydrographic data from the Bermuda Atlantic Time-series Study and the coral-derived pH record, we are able to differentiate pH changes due to surface temperature versus those from ocean circulation and biogeochemical changes. We find that ocean pH does not simply reflect atmospheric CO2 trends but rather that circulation/biogeochemical changes account for >90% of pH variability in the Sargasso Sea and more variability in the last century than would be predicted from anthropogenic uptake of CO2 alone. STUDY NOTES: Two year averaged del11B measurements converted to pH via a calibration to hydrostation pH of corresponding time periods. Provided Keywords: AMO, NAO, Coral del11B proxy, pH NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Goodkin, N.F. Investigator : Wang, B.-S. Investigator : You, C.-F. Investigator : Hughen, K.A. Investigator : Grumet-Prouty, N. Investigator : Bates, N.R. Investigator : Doney, S.C. 2015-07-09 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/18975 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/atlantic/goodkin2015/goodkin2015.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/atlantic/goodkin2015/goodkin2015.txt English https://www.ncdc.noaa.gov/paleo/study/18975 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/atlantic/goodkin2015/goodkin2015.txt Goodkin, Nathalie F., Bo-Sian Wang, Chen-Feng You, Konrad A. Hughen, Nancy Grumet-Prouty, Nicholas R. Bates, and Scott C. Doney2015Ocean circulation and biogeochemistry moderate interannual and decadal surface water pH changes in the Sargasso SeaGeophysical Research Letters4210.1002/2015GL064431http://onlinelibrary.wiley.com/doi/10.1002/2015GL064431/full START YEAR: 1775 AD * END YEAR: 1996 AD -64.716667 32.316667 -64.716667 32.316667