Ancient Ice Air Content of the Vostok Ice Core

摘要: A deep ice core drilled at Vostok Station, Antarctica, provides a record of atmospheric climate and CO2 that is representative global changes over the last glacial-interglacial-penultimate glacial cycle (about 200 kyr). The final in 1989 approached 2540 m. Here we present discuss initial obtained to 2340 combination static head-space extraction stripping remaining dissolved gas was followed by gas-chromatographic analysis. data show “warm” maxima indicated content 2280 link between process air capture release during snowflake formation, snow accumulation, metamorphism, sintering considered. It shown carbon ionic species, which were trapped might be cause for discrepancy measurements “wet” “dry” techniques. possible mechanism Younger Dryas signal also