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El Niño–Southern Oscillation signal in a new East Antarctic ice core, Mount Brown South
Crockart, C.K.; Vance, T.R.; Fraser, A.D.; Abram, N.J.; Criscitiello, A.S.; Curran, M.A.J.; Favier, V.; Gallant, A.J.E.; Kittel, C.; Kjaer, H.A.; Klekociuk, A.R.; Jong, L.M.; Moy, A.D.; Plummer, C.T.; Vallelonga, P.T.; Wille, J.; Zhang, L. (2021). El Niño–Southern Oscillation signal in a new East Antarctic ice core, Mount Brown South. Clim. Past 17(5): 1795-1818. https://dx.doi.org/10.5194/cp-17-1795-2021
In: Climate of the Past. Copernicus: Göttingen. ISSN 1814-9324; e-ISSN 1814-9332
Peer reviewed article  

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Keyword
    Marine/Coastal

Authors  Top 
  • Crockart, C.K.
  • Vance, T.R.
  • Fraser, A.D.
  • Abram, N.J.
  • Criscitiello, A.S.
  • Curran, M.A.J.
  • Favier, V.
  • Gallant, A.J.E.
  • Kittel, C.
  • Kjaer, H.A.
  • Klekociuk, A.R.
  • Jong, L.M.
  • Moy, A.D.
  • Plummer, C.T.
  • Vallelonga, P.T.
  • Wille, J.
  • Zhang, L.

Abstract
    Paleoclimate archives, such as high-resolution ice core records, provide a means to investigate past climate variability. Until recently, the Law Dome (Dome Summit South site) ice core record remained one of few millennial-length high-resolution coastal records in East Antarctica. A new ice core drilled in 2017/2018 at Mount Brown South, approximately 1000?km west of Law Dome, provides an additional high-resolution record that will likely span the last millennium in the Indian Ocean sector of East Antarctica. Here, we compare snow accumulation rates and sea salt concentrations in the upper portion (~?20?m) of three Mount Brown South ice cores and an updated Law Dome record over the period 1975–2016. Annual sea salt concentrations from the Mount Brown South site record preserve a stronger signal for the El Niño–Southern Oscillation (ENSO; austral winter and spring, r?=?0.533, p?

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