Savusavu Bay - 225-Year Oxygen Isotope Data Bagnato, S.; Linsley, B.K.; Howe, S.S.; Wellington, G.M.; Salinger, J. Bagnato, S. Linsley, B.K. Howe, S.S. Wellington, G.M. Salinger, J. PAGES 2k Network PAGES Australasia 2k earth science/paleoclimate/corals and sclerosponges (delta 18O,Diploastrea heliopora,null,per mil VPDB,annual,corals and sclerosponges,anomalized|interpolated,isotope ratio mass spectrometry,N,anomalized to 1970-1996 AD) 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 (Savusavu Bay>LATITUDE -16.82>LONGITUDE 179.23) The South Pacific Convergence Zone (SPCZ), a region of high rainfall, is a major feature of subtropical Southern Hemisphere climate and contributes to and interacts with circulation features across the Pacific, yet its past temporal variability and forcing remain only partially understood. Here we compare coral oxygen isotopic (d18O) series (spanning A.D. 1997-1780 and A.D. 2001-1776) from two genera of hermatypic corals in Fiji, located within the SPCZ, to examine the fidelity of these corals in recording climate change and SPCZ interdecadal dynamics. One of these coral records is a new 225-year subannually resolved d18O series from the massive coral Diploastrea heliopora. Diploastreas use in climate reconstructions is still relatively new, but this coral has shown encouragingly similar interannual variability to Porites, the coral genus most commonly used in Pacific paleoclimate studies. In Fiji we observe that interdecadal d18O variance is also similar in these two coral genera, and Diploastrea contains a larger-amplitude interdecadal signal that more closely tracks instrumental-based indices of Pacific interdecadal climate change and the SPCZ than Porites. Both coral d18O series record greater interdecadal variability from ~1880 to 1950, which is consistent with the observations of Folland et al. (2002), who reported higher variability in SPCZ position before 1945. These observations indicate that Diploastrea will likely provide a significant new source of long-term climate information from the SPCZ region. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Bagnato, S. Investigator : Linsley, B.K. Investigator : Howe, S.S. Investigator : Wellington, G.M. Investigator : Salinger, J. 2005-06-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/1916 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/bagnato2005_noaa.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/bagnato2005_noaa.txt English https://www.ncdc.noaa.gov/paleo/study/1916 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/bagnato2005_noaa.txt Bagnato, Stefan; Linsley, Braddock K.; Howe, Stephen S.; Wellington, Gerard M.; Salinger, Jim2005Coral oxygen isotope records of interdecadal climate variations in the South Pacific Convergence Zone region66Q0600110.1029/2004gc000879 START YEAR: 1776 AD * END YEAR: 2001 AD 179.23 -16.82 179.23 -16.82