Analysis of Measurement Data on Carbon Dioxide Concentration in the Near-ice Surface Atmosphere at North Pole-35 Drifting Ice Station (2007–2008)

A. P. Nagurnyi

CO2 concentration disturbances with an amplitude of 150 ppm are observed in October–November in the region of North Pole-35 drifting ice station over the continental slope of the Arctic Ocean. A local maximum of the CO2 concentration disturbances is observed in April; it is connected with a change in the regime of the sea ice deformation at that time of the year in the western Arctic basin. Changes in the CO2 concentration have oscillations at the frequency of oceanic tides. Several episodes of the initial phase of CO2 release into the near-ice surface atmosphere in October 2007 are recorded. The CO2 amount released into the atmosphere as a result of ice formation in the Arctic Ocean is a significant quantity in the total balance of the CO2 release on the global scale and accounts for approximately 30% of the anthropogenic release of CO2 per year.