Earth and Planetary Sciences - Student Works
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Item Arctic sea ice reconstruction for the past 500 years using palaeo-based proxies: a case study of PIP25 biomarker(2015) Gill, Navpreet; Furze, Mark F.A.; Mugo, Samuel; Pieńkowski, Anna J.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.