Nov 16, 2016: data received from Dave Lund with the following email Andreas, attached are the coretop stable isotope results for the Florida Straits (first tab) and Brazil Margin (second tab). Note that the Bahamas results are influenced by anthropogenic d13C - each time series shows stable values from 1000 to 200 yr BP and then a drop of several tenths of a per mil over the past couple hundred years. Using a simple mass balance approach, we’ve estimated the anthro carbon concentration at these sites and the results are very similar to the DeltaC* method based on water column data. If you’re interested in the details, let me know. The Brazil Margin results are based on the uppermost sediment in each core and therefore may be different than the interpolated values that are included in the OC3 paper (at least I think that’s what is included, not exactly sure). In any case, the attached results are better estimates of the true core top values, please use these instead. Note that there are 0.2-0.4 per mil offsets in d13C compared to nearby WOCE data at the depth of NADW. I’ve been working with Kat Allen and she’s shown that the different is likely due to watermass mixing. Essentially, the coresites monitor the deep western boundary d13C and there is a strong offshore gradient in d13C due to mixing with non-NADW watermasses - this yield lower d13C in the WOCE data even though the water column data are only 500-1000 km offshore. If you’re interested I could ask Kat to make up a plot that could be included in the OC3 paper. - Dave