Arctic sea ice reconstruction for the past 500 years using palaeo-based proxies: a case study of PIP25 biomarker
paleoclimatic changes, biomarkers, Arctic Ocean
To deduce paleoclimatic changes attributable to variability in the sea ice, a long-term record of sea-ice is required, beyond the time period covered by direct instrumental monitoring. A recent proxy for Arctic Ocean sea-ice has been developed based on the analysis of an isomer of C25, also known as IP25 (Ice proxy with 25 carbo atoms). In addition, other phytoplankton - derive biomarkers such as brassicasterol (Phytoplankton marker - IP25 index; PIP25) are employed to confirm sea ice change deductions for the past 500 years.
Presented on January 27, 2015 at I, Research: Student Research Week held at MacEwan University in Edmonton, Alberta.
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