A first chronology was developed based on the density bands evident in the X-rays, which are presumed to represent one year of growth (Figure 4). The age model was then refined using the strong annual cycle in coral d18O (Figures 5 and 6). The heaviest isotopic value in any given year was assigned to 1 September, which is, on average, the coldest month. We then interpolated linearly between these anchor points into 12 equidistant points per year for the monthly, and 6 points per year for the bimonthly resolved series

d18O (Ocean2kHR_013): interpretation4_scope: '' has been replaced by 'isotope'

Column 'addRnZUhh3KuU3bAO80z', with variable name 'yearEnsemble', was added to the dataset
Column 'addRX2rHjEBD7CDYSM3G', with variable name 'yearEnsemble', was added to the dataset

Pfeiffer M., O. Timm, W-C. Dullo, S. Podlech

Pfeiffer, M., Timm, O., Dullo, W.-C. and Podlech, S.: Oceanic forcing of interannual and multidecadal climate variability in the southwestern Indian Ocean: Evidence from a 160 year coral isotopic record (La Reunion, 55°E, 21°S), Paleoceanography, 19(4), n/a–n/a, doi:10.1029/2003pa000964, 2004.

Oceanic forcing of interannual and multidecadal climate variability in the southwestern Indian Ocean: Evidence from a 160 year coral isotopic record (La R�union, 55�E, 21�S)

Finnigan MAT 252 with a Kiel carbonate device

We use the pronounced seasonal cycle in d18O and Sr/Ca to develop the final chronology of the coral core and assigned the highest d18O and Sr/Ca values to august 15 of each year, which is on average the coldest month. [...] The d18O and Sr/Ca time series were interpolated linearly into 6 and 12 equi- distant points for any given year between these anchor points using the Analyseries software,.083 to 0.167 yrs,chronological,months,on a seasonal scale coral d18O  and Sr/Ca at this location primarily reflects SST variability (Fig. 5; Table 1). "

A correlation of seasonal mean rainfall anomalies derived from the NCEP/NCAR reanalysis data set (1948-1995; averaged over 3545E, 20-30S; http://www. cdc.noaa.gov/cdc/data.ncep.reanalysis.derived.html) with coral d18O shows a clear relationship during austral summer (NDJF) significant above the 90% level (Fig. 6). This also holds for a correlation with South African summer rainfall averaged over 25-30E and 15-25S (significant N95%) (Fig. 6). Thus, summer coral d18O is also related to changes in the regional hydrologic (P/E) balance