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Midterm Colloquium by Erik Warming

Continuous flow analysis (CFA) is a well-established method to obtain information about chemical and dust impurities in ice cores, as indicators of past changes in the climate system. A section of the ice core is continuously melted on a melt head supplying a water flow which
is analyzed online. This provides high depth and time resolution of the ice core records and very efficient sample decontamination as only the inner part of the ice sample is analyzed.

Here I present the CFA system and the different methods of detection. As an improvement to the CFA system, a drill liquid detector was field-tested at NEEM 2011, as the drill liquid contamination in brittle ice introduces false data. A new way to detect calcium will also be explored.

Supervisors Paul Vallelonga and Anders Svensson.