noaa-coral-16557 Nelly Bay, Magnetic Island, Australia Mid-Holocene and Modern Coral Luminescence Data and Burdekin River Flow Reconstruction Lough, J.M.; Llewellyn, L.E.; Lewis, S.E.; Turney, C.S.M.; Palmer, J.G.; Cook, C.G.; Hogg, A.G. Nelly Bay, Magnetic Island, Australia Mid-Holocene and Modern Coral Luminescence Data and Burdekin River Flow Reconstruction 2014-06-06 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/16557 Investigator J.M. Lough Investigator L.E. Llewellyn Investigator S.E. Lewis Investigator C.S.M. Turney Investigator J.G. Palmer Investigator C.G. Cook Investigator A.G. Hogg earth science paleoclimate climate reconstructions|corals and sclerosponges streamflow,luminescence,null,cubic kilometer,Oct-Sep,climate reconstructions|corals and sclerosponges,null,regression analysis,N,exponential regression earth science paleoclimate corals and sclerosponges luminescence,Porites sp.,null,dimensionless,null,corals and sclerosponges,raw,luminescence spectroscopy,N,null earth science paleoclimate instrumental streamflow,null,null,cubic kilometer,null,instrumental,null,null,N,null earth science paleoclimate climate reconstructions|corals and sclerosponges age,null,null,calendar year,null,climate reconstructions|corals and sclerosponges,null,null,N,null earth science paleoclimate corals and sclerosponges age,null,null,calendar year,null,corals and sclerosponges,null,null,N,null earth science paleoclimate climate reconstructions|corals and sclerosponges age,null,null,year Common Era,null,climate reconstructions|corals and sclerosponges,null,null,N,null earth science paleoclimate corals and sclerosponges physical properties geoscientificInformation ENSO Streamflow Reconstruction 6223 cal yr BP -63 cal yr BP Complete -19.2 -19.2 146.9 146.9 Continent Australia/New Zealand Australia Queensland Nelly Bay, Magnetic Island, Australia>LATITUDE -19.2>LONGITUDE 146.9 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Lough, J.M., L.E. Llewellyn, S.E. Lewis, C.S.M. Turney, J.G. Palmer, C.G. Cook and A.G. Hogg 2014 Paleoceanography 29 10.1002/2014PA002630

Summer monsoon rainfall in northeastern (NE) Australia exhibits substantial inter-annual variability resulting in highly variable river flows. The occurrence and magnitude of these seasonal river flows are reliably recorded in modern inshore corals as luminescent lines. Here we present reconstructed annual river flows for two ~120-year mid-Holocene windows based on luminescence measurements from five cores obtained from three separate coral colonies. We were able to cross-date the luminescence signatures in four cores from two of the colonies, providing confidence in the derived reconstruction. Present day NE Australian rainfall and river flow are sensitive to El Niño-Southern Oscillation (ENSO) variability, with La Niña (El Niño) events typically associated with wetter (drier) monsoon seasons. Thus, our replicated and annually-resolved coral records provide valuable insights into the northern Australian summer monsoon and ENSO variability at a key period (6?ka) when greenhouse gas levels and ice sheet cover were comparable to the pre-industrial period but orbital forcing was different. Average modern and mid-Holocene growth characteristics were very similar, suggesting that sea surface temperatures off NE Australia at 6ky were also close to present values. The reconstructed river flow record suggests, however, that the mid-Holocene Australian summer monsoon was weaker, less variable from year-to-year (possibly indicative of reduced ENSO variability) and characterised by more within-season flood pulses than present. In contrast to today, the delivery of moisture appears to have been dominated by eastward propagating convective coupled waves associated with the Madden-Julian Oscillation. STUDY NOTES: Radiocarbon dating of contiguous decadal-length segments through NEL03D and NEL07B provided an absolutely dated chronology with a calendar age that spans 6223 to 6098 yr BP. This appears to have been followed by a 60-year gap with NEL01D dated to 6038 to 5918 yr BP. Based on this dating, we assigned Year 0 to the last dated year at the outer edge of NEL01D (i.e. 5918 yr BP). Allowing for the 60-year gap, the youngest year of NEL07B was assigned Year 188 and the oldest year of NEL03D was assigned Year 313. Cross-dating of cores also showed that NEL07 died 44 years after NEL03. Thus, we obtained four time series of coral luminescence from two colonies (NEL03 and NEL07) which could be precisely related to each other and overlapped for 61 years (Years 294 to 234) and a single time series from colony NEL01 for Years 128 to 0.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2014/lough2014-nel07c.txt Formatted Text File; NEL07C Luminescence GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2014/lough2014-nel35a.txt Formatted Text File; NEL35A Luminescence GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2014/lough2014-nel39b.txt Formatted Text File; NEL39B Luminescence GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2014/lough2014-nel01d.txt Formatted Text File; NEL01D Luminescence GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2014/lough2014-nel03a.txt Formatted Text File; NEL03A Luminescence GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2014/lough2014-nel29a.txt Formatted Text File; NEL29A Luminescence GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2014/lough2014-burdekin-nel01.txt Formatted Text File; Burdekin River Flow NEL01 Reconstruction GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2014/lough2014-nel03d.txt Formatted Text File; NEL03D Luminescence GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2014/lough2014-nel07b.txt Formatted Text File; NEL07B Luminescence GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2014/lough2014-burdekin-mod.txt Formatted Text File; Burdekin River Flow Observed and Modern Reconstruction GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2014/lough2014-burdekin-nel03-07.txt Formatted Text File; Burdekin River Flow NEL03 and NEL07 Reconstruction USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11