Boswijk - Pitt Street - AGAU - ITRDB NEWZ096 Boswijk, G. Boswijk, G. AGAU Agathis australis (D. Don) Loudon kauri pine earth science/paleoclimate/tree ring (age,null,null,year Common Era,null,tree ring,null,null,N,null) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PIT001; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree-ring (Pitt Street>LATITUDE -36.85>LONGITUDE 174.75) It is not known how global warming will affect the El Niño/Southern Oscillation (ENSO). The instrumental record is too short to discern centennial-scale trends and modelling results are inconclusive1, 2, 3, 4, 5. Proxy reconstructions indicate that ENSO activity was relatively high during the late twentieth century6, 7, 8, 9, 10, but whether this was unusual in the millennial context remains uncertain. Here we present insights into these issues derived from rings of the kauri tree (Agathis australis), a rare long-lived conifer endemic to the forests of northern New Zealand. Our results indicate that the twentieth century was the most ‘ENSO-active’ century of the past 500 years, but may not be unique in the context of the past 700 years, and that ENSO activity comparable to or elevated above that experienced during the late twentieth century is plausible under warmer-than-present conditions. We also find evidence that there may have been significant changes in the ENSO teleconnection to the New Zealand region during the fourteenth and fifteenth centuries, and of multi-decadal fluctuations in ENSO-related activity building up to the present day. Although these two features may delay the expression of increased ENSO activity in the New Zealand region, our results indicate that New Zealand climate is likely to be more dominated by ENSO-related inter-annual variability as the world continues to warm. STUDY NOTES: Purpose of collection: # # Archaeology - construction (felling dates) # # # # Cores stored at: # # Single sample stored at the Tree-Ring Laboratory, School of # # Environment, University of Auckland. Available to view on site. # # # # References: # # Fowler AM, Boswijk G, Lorrey AM, Gergis J, Pirie M, McCloskey SPJ, # # Palmer JG, Wunder J. 2012. Multi-centennial tree-ring record of ENSO- # # related activity in New Zealand. Nature Climate Change 2: 172 - 176. # # # # NOTES: # # Single sample recovered from a well on upper Pitt Street (PITT), # # Auckland City for dating. Raw ring width measurement (0.01 mm). # # Included in late-Holocene kauri chronology data set. See supplementary # # information in Fowler et al 2012 for further details. # # # # No site report. # # # # NOAA Template Raw Measurements file added 2019-01-24. NOAA Template Raw Measurements file added 2019-02-01. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Boswijk, G. 2012-08-15 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/13911 https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/australia/newz096.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/australia/newz096-noaa.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/newz096.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/australia/newz096.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/australia/newz096-noaa.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/newz096.txt English https://www.ncdc.noaa.gov/paleo/study/13911 https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/australia/newz096.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/australia/newz096-noaa.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/newz096.txt Anthony M. Fowler, Gretel Boswijk, Andrew M. Lorrey, Joelle Gergis, Maryann Pirie, Shane P.J. McCloskey, Jonathan G. Palmer, and Jan Wunder. 2012. Multi-centennial tree-ring record of ENSO-related activity in New Zealand. Nature Climate Change 2: 172 - 176. DOI: 10.1038/nclimate1374 START YEAR: 1791 AD * END YEAR: 1871 AD 174.75 -36.85 174.75 -36.85