Carbon and oxygen isotope ratios of atmospheric CO2 in JARE61

Pure CO2 samples extracted from the atmosphere in Syowa Station were analyzed their carbon and oxygen isotope ratios with a mass spectrometer. The isotope ratios have important information on the CO2 exchange between the atmosphere, surface ocean and terrestrial biosphere.采用质谱仪（mass spectrometer）对从昭和基地（Syowa Station）大气中采集的纯二氧化碳（CO2）样本进行碳、氧同位素比值分析。该同位素比值蕴含着大气、表层海洋与陆地生物圈之间的二氧化碳交换过程的重要信息。