南大洋大气氧化亚氮分布特征

• Main Authors: 詹力扬, 陈立奇
• Format: Article in Journal/Newspaper
• Language: Chinese
• Published: 2007
• Subjects: 氧化亚氮; 洋流; 海冰变化; 生物活动; 南大洋; nitrous oxide,ocean circulations,sea ice change,biological activity,the Southern Ocean; Antarctic; Southern Ocean; Zhongshan; Zhongshan Station; Antarc*; Sea ice
• Online Access: http://dspace.xmu.edu.cn/handle/2288/140702

在执行中国第21次南极科学考察任务期间,于2004年11月15日至2005年2月2日在南大洋(澳大利亚以南以及中山站和长城站之间环绕南极海域)航线上采集大气氧化亚氮样品,并带回陆地实验室分析。结果显示,大气氧化亚氮浓度由澳大利亚至中山站航段的(309.6±1.6)nL/L上升至环绕南极冰边缘海区航段的(320.0±1.2)nL/L。这种南大洋大气中氧化亚氮浓度随纬度升高而升高的特征,可能与洋流作用,季节性海冰融化、生物作用以及近岸等的影响因素有关。 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. 国家自然科学基金重点项目(40531007);; 国家自然科学基金项目(40276001);; 国家社会公益专项(2004DIB5178、2003DEB5J057)资助