Abstract:

Triple air samples were taken during the Cruise in the 21st Chinese National Antarctic Research Expedition,and analyzed in the lab on land.The results show that the main mixing ratios of nitrous oxide raise respectively from(309.6±1.6) nL/L over Australia—Zhongshan Station waters to(320.0±1.2)nL/L over the surround Antarcitc waters about 60°S.These changes may be attributed to ocean circulations,seasonal sea ice variations and biological activities during the observations.