Mt. Erebus Saddle, Antarctica 500 Year Ice Core Glaciochemical Data Rhodes, R.H.; Bertler, N.A.N.; Baker, J.A.; Steen-Larsen, H.C.; Sneed, S.; Morgenstern, U.; Johnsen, S.J. Rhodes, R.H. Bertler, N.A.N. Baker, J.A. Steen-Larsen, H.C. Sneed, S. Morgenstern, U. Johnsen, S.J. Little Ice Age (LIA) earth science/paleoclimate/ice cores (ice age,null,null,year Common Era,null,ice cores,null,null,N,null) earth science/paleoclimate/ice cores (aluminum,bulk ice,null,parts per trillion,null,ice cores,null,inductively-coupled plasma mass spectrometry,N,null) earth science/paleoclimate/ice cores (cerium,bulk ice,null,parts per trillion,null,ice cores,null,inductively-coupled plasma mass spectrometry,N,null) earth science/paleoclimate/ice cores (methanesulfonate,bulk ice,null,parts per billion,null,ice cores,null,ion chromatography,N,null) earth science/paleoclimate/ice cores (vanadium,bulk ice,null,parts per trillion,null,ice cores,null,inductively-coupled plasma mass spectrometry,N,null) earth science/paleoclimate/ice cores (chloride,bulk ice,null,parts per billion,null,ice cores,null,ion chromatography,N,null) earth science/paleoclimate/ice cores (yttrium,bulk ice,null,parts per trillion,null,ice cores,null,inductively-coupled plasma mass spectrometry,N,null) earth science/paleoclimate/ice cores (manganese,bulk ice,null,parts per trillion,null,ice cores,null,inductively-coupled plasma mass spectrometry,N,null) earth science/paleoclimate/ice cores (lead,bulk ice,null,parts per trillion,null,ice cores,null,inductively-coupled plasma mass spectrometry,N,null) earth science/paleoclimate/ice cores (sample identification,null,null,null,null,ice cores,null,null,N,null) earth science/paleoclimate/ice cores (sodium,bulk ice,null,parts per billion,null,ice cores,null,ion chromatography,N,null) earth science/paleoclimate/ice cores (sample identification,null,null,null,null,ice cores,null,null,C,null) earth science/paleoclimate/ice cores (strontium,bulk ice,null,parts per trillion,null,ice cores,null,inductively-coupled plasma mass spectrometry,N,null) earth science/paleoclimate/ice cores (magnesium,bulk ice,null,parts per billion,null,ice cores,null,ion chromatography,N,null) earth science/paleoclimate/ice cores (delta 18O,bulk ice,null,per mil VSMOW,null,ice cores,null,isotope ratio mass spectrometry|optical feedback cavity enhanced absorption spectroscopy,N,null) earth science/paleoclimate/ice cores (depth,null,null,meter,null,ice cores,null,null,N,null) earth science/paleoclimate/ice cores (magnesium,bulk ice,null,parts per trillion,null,ice cores,null,inductively-coupled plasma mass spectrometry,N,null) earth science/paleoclimate/ice cores (lanthanum,bulk ice,null,parts per trillion,null,ice cores,null,inductively-coupled plasma mass spectrometry,N,null) earth science/paleoclimate/ice cores (sulfate,bulk ice,null,parts per billion,null,ice cores,null,ion chromatography,N,null) earth science/paleoclimate/ice cores (nitrate,bulk ice,null,parts per billion,null,ice cores,null,ion chromatography,N,null) earth science/paleoclimate/ice cores (titanium,bulk ice,null,parts per trillion,null,ice cores,null,inductively-coupled plasma mass spectrometry,N,null) earth science/paleoclimate/ice cores (barium,bulk ice,null,parts per trillion,null,ice cores,null,inductively-coupled plasma mass spectrometry,N,null) earth science/paleoclimate/ice cores (delta 2H,bulk ice,null,per mil VSMOW,null,ice cores,null,isotope ratio mass spectrometry|optical feedback cavity enhanced absorption spectroscopy,N,null) earth science/paleoclimate/ice cores (sodium,bulk ice,null,parts per trillion,null,ice cores,null,inductively-coupled plasma mass spectrometry,N,null) earth science/paleoclimate/ice cores (rubidium,bulk ice,null,parts per trillion,null,ice cores,null,inductively-coupled plasma mass spectrometry,N,null) earth science/paleoclimate/ice cores (deuterium excess,bulk ice,null,per mil VSMOW,null,ice cores,null,isotope ratio mass spectrometry|optical feedback cavity enhanced absorption spectroscopy,N,null) earth science/paleoclimate/ice core earth science/paleoclimate/ice core earth science/paleoclimate/ice core (Mt. Erebus Saddle>LATITUDE -77.515>LONGITUDE 167.6765) Increasing paleoclimatic evidence suggests that the Little Ice Age (LIA) was a global climate change event. Understanding the forcings and associated climate system feedbacks of the LIA is made difficult by the scarcity of Southern Hemisphere paleoclimate records. We use a new glaciochemical record of a coastal ice core from Mt. Erebus Saddle, Antarctica, to reconstruct atmospheric and oceanic conditions in the Ross Sea sector of Antarctica over the past five centuries. The LIA is identified in stable isotope (dD) and lithophile element records, which respectively demonstrate that the region experienced 1.6 ± 1.4°C cooler average temperatures prior to 1850 AD than during the last 150 yr and strong (>57 m s-1) prevailing katabatic winds between 1500 and 1800 AD. Al and Ti concentration increases of an order of magnitude (>120 ppb Al) are linked to enhanced aeolian transport of complex silicate minerals and represent the strongest katabatic wind events of the LIA. These events are associated with three 12-30 yr intervals of cooler temperatures at ca. 1690 AD, 1770 AD and 1840 AD. Furthermore, ice core concentrations of the biogenic sulphur species MS- suggest that biological productivity in the Ross Sea polynya was ~80% higher prior to 1875 AD than at any subsequent time. We propose that cooler Antarctic temperatures promoted stronger katabatic winds across the Ross Ice Shelf, resulting in an enlarged Ross Sea polynya during the LIA. STUDY NOTES: Glaciochemical records (elements, ions, and stable water isotopes) from the Mt. Erebus Saddle, Antarctica, ice core for the past 500 years, used to reconstruct Little Ice Age conditions in coastal Antarctica. Mt. Erebus Saddle Ice Core, Antarctica: 77°30.90'S, 167°40.59'E, 1600m elev. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Rhodes, R.H. Investigator : Bertler, N.A.N. Investigator : Baker, J.A. Investigator : Steen-Larsen, H.C. Investigator : Sneed, S. Investigator : Morgenstern, U. Investigator : Johnsen, S.J. 2012-07-30 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/13175 https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/erebus/erebus2012.xls https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/erebus/erebus2012.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/erebus/erebus2012.xls https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/erebus/erebus2012.txt English https://www.ncdc.noaa.gov/paleo/study/13175 https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/erebus/erebus2012.xls https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/erebus/erebus2012.txt Rhodes, R.H., N.A.N. Bertler, J.A. Baker, H.C. Steen-Larsen, S.B. Sneed, U. Morgenstern, and S.J. Johnsen. 2012. Little Ice Age climate and oceanic conditions of the Ross Sea, Antarctica, from a coastal ice core record. Climate of the Past, Vol. 8, pp. 1223-1238 doi:10.5194/cp-8-1223-2012 www.clim-past.net/8/1223/2012/ START YEAR: 1472 AD * END YEAR: 2006 AD 167.6765 -77.515 167.6765 -77.515