The sea ice proxy IP25 and examples of its application within palaeo sea ice research
Knowledge about palaeo sea ice conditions in the Arctic Ocean and its marginal seas serves to constrain the natural variability in sea ice cover and how this relates to atmospheric and/or oceanic circulation changes. The biomarker IP25, a monounsaturated C25 highly branched isoprenoid exclusively pr...
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ftawi:oai:epic.awi.de:38541 2024-09-15T17:53:32+00:00 The sea ice proxy IP25 and examples of its application within palaeo sea ice research Müller, Juliane 2015-07-31 https://epic.awi.de/id/eprint/38541/ https://hdl.handle.net/10013/epic.45862 unknown Müller, J. orcid:0000-0003-0724-4131 (2015) The sea ice proxy IP25 and examples of its application within palaeo sea ice research , INQUA Conference, Nagoya, Japan, 26 July 2015 - 2 August 2015 . hdl:10013/epic.45862 EPIC3INQUA Conference, Nagoya, Japan, 2015-07-26-2015-08-02 Conference notRev 2015 ftawi 2024-06-24T04:12:21Z Knowledge about palaeo sea ice conditions in the Arctic Ocean and its marginal seas serves to constrain the natural variability in sea ice cover and how this relates to atmospheric and/or oceanic circulation changes. The biomarker IP25, a monounsaturated C25 highly branched isoprenoid exclusively produced by sea ice diatoms (Brown et al., 2014; Belt et al., 2007), is a relatively new tool for sea ice reconstructions. Other than calcareous or siliceous walled microfossils, IP25 exhibits a good preservation potential in the polar and subpolar high northern latitudes. Its reliability as a direct indicator of a former sea ice cover has been demonstrated within several studies conducted on Arctic Ocean surface sediments. A further approach aiming at a semi-quantitative assessment of palaeo sea ice coverage is the PIP25 index, which combines the information on sea ice occurrence (IP25) and phytoplankton productivity (e.g. through diatom or dinoflagellate biomarkers; Müller et al., 2011). Both IP25 and the PIP25 index have been used repeatedly for reconstructions of how Arctic sea ice changed through time. This presentation summarises the current knowledge on the source and distribution of IP25, discusses the use of the PIP25 index and provides examples of IP25/PIP25 based palaeo sea ice studies. References Belt, S.T., Massé, G., Rowland, S.J., Poulin, M., Michel, C., LeBlanc, B., 2007. A novel chemical fossil of palaeo sea ice: IP25. Organic Geochemistry, 38, (1), 16-27. Brown, T.A., Belt, S.T., Tatarek, A., Mundy, C.J., 2014. Source identification of the Arctic sea ice proxy IP25. Nature Communications, 5:4197. Müller, J., Wagner, A., Fahl, K., Stein, R., Prange, M., Lohmann, G., 2011. Towards quantitative sea ice reconstructions in the northern North Atlantic: A combined biomarker and numerical modelling approach. Earth & Planetary Science Letters, 306, (3–4), 137-148. Conference Object Arctic Ocean North Atlantic Phytoplankton Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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description |
Knowledge about palaeo sea ice conditions in the Arctic Ocean and its marginal seas serves to constrain the natural variability in sea ice cover and how this relates to atmospheric and/or oceanic circulation changes. The biomarker IP25, a monounsaturated C25 highly branched isoprenoid exclusively produced by sea ice diatoms (Brown et al., 2014; Belt et al., 2007), is a relatively new tool for sea ice reconstructions. Other than calcareous or siliceous walled microfossils, IP25 exhibits a good preservation potential in the polar and subpolar high northern latitudes. Its reliability as a direct indicator of a former sea ice cover has been demonstrated within several studies conducted on Arctic Ocean surface sediments. A further approach aiming at a semi-quantitative assessment of palaeo sea ice coverage is the PIP25 index, which combines the information on sea ice occurrence (IP25) and phytoplankton productivity (e.g. through diatom or dinoflagellate biomarkers; Müller et al., 2011). Both IP25 and the PIP25 index have been used repeatedly for reconstructions of how Arctic sea ice changed through time. This presentation summarises the current knowledge on the source and distribution of IP25, discusses the use of the PIP25 index and provides examples of IP25/PIP25 based palaeo sea ice studies. References Belt, S.T., Massé, G., Rowland, S.J., Poulin, M., Michel, C., LeBlanc, B., 2007. A novel chemical fossil of palaeo sea ice: IP25. Organic Geochemistry, 38, (1), 16-27. Brown, T.A., Belt, S.T., Tatarek, A., Mundy, C.J., 2014. Source identification of the Arctic sea ice proxy IP25. Nature Communications, 5:4197. Müller, J., Wagner, A., Fahl, K., Stein, R., Prange, M., Lohmann, G., 2011. Towards quantitative sea ice reconstructions in the northern North Atlantic: A combined biomarker and numerical modelling approach. Earth & Planetary Science Letters, 306, (3–4), 137-148. |
format |
Conference Object |
author |
Müller, Juliane |
spellingShingle |
Müller, Juliane The sea ice proxy IP25 and examples of its application within palaeo sea ice research |
author_facet |
Müller, Juliane |
author_sort |
Müller, Juliane |
title |
The sea ice proxy IP25 and examples of its application within palaeo sea ice research |
title_short |
The sea ice proxy IP25 and examples of its application within palaeo sea ice research |
title_full |
The sea ice proxy IP25 and examples of its application within palaeo sea ice research |
title_fullStr |
The sea ice proxy IP25 and examples of its application within palaeo sea ice research |
title_full_unstemmed |
The sea ice proxy IP25 and examples of its application within palaeo sea ice research |
title_sort |
sea ice proxy ip25 and examples of its application within palaeo sea ice research |
publishDate |
2015 |
url |
https://epic.awi.de/id/eprint/38541/ https://hdl.handle.net/10013/epic.45862 |
genre |
Arctic Ocean North Atlantic Phytoplankton Sea ice |
genre_facet |
Arctic Ocean North Atlantic Phytoplankton Sea ice |
op_source |
EPIC3INQUA Conference, Nagoya, Japan, 2015-07-26-2015-08-02 |
op_relation |
Müller, J. orcid:0000-0003-0724-4131 (2015) The sea ice proxy IP25 and examples of its application within palaeo sea ice research , INQUA Conference, Nagoya, Japan, 26 July 2015 - 2 August 2015 . hdl:10013/epic.45862 |
_version_ |
1810429418767646720 |