Among the field experiments are investigations in the Baltic Sea, the Black Sea and the superanoxic fjord Framvaren in Norway. In the laboratory we perform incubations under controlled conditions to estimate the rate constants for reduction of several species of halocarbons in seawater under different redox conditions. Reduction of volatile halocarbons in seawater, results from a study in the Black Sea. Accepted for publication in Marine Chemistry. Apparent removal of the transient tracer carbon tetrachloride from anoxic seawater.
Carbohydrates constitute one very important class of dissolved organic compounds in marine waters.
The goal of this project is to quantify, characterize and improve the knowledge of the biogeochemistry of this class of compounds in marine waters including sediment porewaters. We also study turnover rates of carbohydrates in sediments, pathways of degradation for these compounds and their role in benthic carbon cycling. One reason so little is known about marine DOM is that a very small fraction of it has been chemically identified, which is mainly due to analytical problems. Therefore, significant effort is paid to development of analytical techniques capable of separating and quantifying a large range of carbohydrates. The Greenland Sea is one of the dominating global areas for deep water formation.