Finnigan MAT251 mass spectrometer with automated carbonate (Kiel) prep device

Interannual variability in the MS01 coral d18O for 1910a€“ 1997 is clearly dominated by changes in d18Ow because SSTs reconstructed from the coral d18O span 5C [Gagan et al., 1998], while the GOSTA SST range is only 1C (Figure 1). Comparison of local SSTs and rainfall with the coral d18O record shows that d18O increases when SST and rainfall decrease during El NinEœo events

Interannual variability in the MS01 coral d18O for 1910-1997 is clearly dominated by changes in d18Ow because SSTs reconstructed from the coral d18O span 5C [Gagan et al., 1998], while the GOSTA SST range is only 1C (Figure 1). Comparison of local SSTs and rainfall with the coral d18O record shows that d18O increases when SST and rainfall decrease during El Nino events.

d18O (CO04MGNG01A): interpretation4_scope: '' has been replaced by 'isotope'

Column 'addRDkngOF8X1wBMFTGu', with variable name 'yearEnsemble', was added to the dataset
Column 'addRTzG6g53HwNovjKjs', with variable name 'yearEnsemble', was added to the dataset

McGregor, H. V. and Gagan, M. K.: Western Pacific coral δ18O records of anomalous Holocene variability in the El Nino-Southern Oscillation, Geophysical Research Letters, 31(11), n/a–n/a, doi:10.1029/2004gl019972, 2004.

automated carbonate preparation device (Kiel device) + Finnigan Mat 252 mass spectrometer

A simple chronology based on these density bands in both corals temporally aligned anomalous 18O-depleted years precisely in the same years (e.g., 1972?1973, 1982? 1983). During these years, there were noted positive precipitation and/or SST anomalies. We then assigned February 15 to the most negative isotopic values. This is, on average, the wettest month. We then interpolated linearly between the anchor points to obtain bimonthly records of coral y18O.

We find strong correlations between coral y18O, precipitation, and OLR, but also between coral y18O and SST

Core piM correlates more strongly with precipitation and OLR than COI-5  (Table 1). Note that years of high rainfall coincide with years of large negative coral y18O anomalies in the wet season (and high amplitudes of the annual cycle,