Antarctic sea ice reconstructions: pros and cons of highly branched isoprenoids as sea ice proxies

Nele Lamping , Wee Wei Khoo , Juliane Müller , Oliver Esper , Thomas Frederichs & Christian Haas
The reconstruction of past Antarctic sea ice coverage through the application of diatom assemblages is often hampered in near coastal environments due to silica dissolution effects. The more recently established approach of using highly branched isoprenoid biomarkers to identify past sea ice conditions seems a valid method to overcome this limitation and that may also provide insight into ice-shelf dynamics. Here, we evaluate the so-called PIPSO25 index applied to modern surface sediments from the Amundsen...
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