University Of Tasmania
137186 - Organic compounds in a sub&%238208;Antarctic ice core.pdf (1.65 MB)

Organic compounds in a sub-Antarctic ice core: a potential suite of sea ice markers

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journal contribution
posted on 2023-05-20, 10:29 authored by King, ACF, Thomas, ER, Joel PedroJoel Pedro, Markle, B, Potocki, M, Jackson, SL, Wolff, E, Kalberer, M
Investigation of organic compounds in ice cores can potentially unlock a wealth of new information in these climate archives. We present results from the first ever ice core drilled on sub‐Antarctic island Bouvet, representing a climatologically important but understudied region. We analyze a suite of novel and more familiar organic compounds in the ice core, alongside commonly measured ions. Methanesulfonic acid shows a significant, positive correlation to winter sea ice concentration, as does a fatty acid compound, oleic acid. Both may be sourced from spring phytoplankton blooms, which are larger following greater sea ice extent in the preceding winter. Oxalate, formate, and acetate are positively correlated to sea ice concentration in summer, but sources of these require further investigation. This study demonstrates the potential application of organic compounds from the marine biosphere in generating multiproxy sea ice records, which is critical in improving our understanding of past sea ice changes.


Publication title

Geophysical Research Letters










Institute for Marine and Antarctic Studies


Amer Geophysical Union

Place of publication

2000 Florida Ave Nw, Washington, USA, Dc, 20009

Rights statement

Copyright 2019 The Authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0)

Repository Status

  • Open

Socio-economic Objectives

Atmospheric composition (incl. greenhouse gas inventory); Effects of climate change on Antarctic and sub-Antarctic environments (excl. social impacts); Understanding climate change not elsewhere classified