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| 1 | Monitoring atmospheric nitrous oxide background concentrations at Zhongshan Station,east Antarctica显示文摘At present,continuous observation data for atmospheric nitrous oxide(N_2O) concentrations are still lacking,especially in east Antarctica.In this paper,nitrous oxide background concentrations were measured at Zhongshan Station(69°22′25″S,76°22′14″E),east Antarctica during the period of 2008–2012,and their interannual and seasonal characteristics were analyzed and discussed.The mean N_2O concentration was 321.9 n L/L with the range of 320.5–324.8 n L/L during the five years,and it has been increasing at a rate of 0.29% year-1.Atmospheric N_2O concentrations showed a strong seasonal fluctuation during these five years.The concentrations appeared to follow a downtrend from spring to autumn,and then increased in winter.Generally the highest concentrations occurred in spring.This trend was very similar to that observed at other global observation sites.The overall N_2O concentration at the selected global sites showed an increasing annual trend,and the mean N_2O concentration in the Northern Hemisphere was slightly higher than that in the Southern Hemisphere.Our result could be representative of atmospheric N_2O background levels at the global scale.This study provided valuable data for atmospheric N_2O concentrations in east Antarctica,which is important to study on the relationships between N2 O emissions and climate change. | Wenjuan Ye Lingen Bian Can Wang Renbin Zhu Xiangdong Zheng Minghu Ding | 2016 | Journal of Environmental Sciences2016，28，9： | 1 |
| 2 | 海洋大气二氧化碳船基走航连续观测数据的质量控制方法显示文摘船基走航连续观测是掌握海洋大气温室气体含量及特征的重要方式之一.为准确掌握海表大气温室气体时空变率,必须建立科学的数据质量控制方法.本研究基于2013年春季在我国近海开展的海洋大气CO_(2)船基走航连续观测数据,充分结合现场操作记录、气象要素、航速航向、拉依达准则和气团后向轨迹模拟结果等数据及技术手段,开展CO_(2)观测数据的筛分处理方法研究.本研究优化建立的方法可标记仪器故障、人为操作和船体排放等因素导致的异常观测值.对走航期间近海CO_(2)混合比分析结果显示,我国近海大气CO_(2)的纬向分布与北半球MBL的CO_(2)模拟结果具有一致性,但受来自欧亚大陆气团的影响,导致我国近海与MBL的CO_(2)混合比之差随纬度增加而上升. | 李嘉鑫 臧昆鹏 林溢 陈圆圆 邱珊珊 熊浩宇 卿雪梅 蒋凯 洪海祥 方双喜 | 2022 | 环境化学2022，41，10： | 1 |
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