CO2 Monitoring and Background Mole Fraction at Zhongshan Station, Antarctica

Atmosphere

Yulong Sun³  Lingen Bian³  Jie Tang²  Zhiqiu Gao¹  Changgui Lu² 

[1] College of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China; E-Mail:;Chinese Academy of Meteorological Sciences, Beijing 100081, China; E-Mails:;Climate and Weather Disasters Collaborative Innovation Center, Nanjing University of Information Science & Technology, Nanjing 210044, China; E-Mail:

关键词: Antarctica;    Zhongshan Station;    CO₂;    background;    CO₂ characteristics;   

DOI  :  10.3390/atmos5030686

来源: mdpi

【 摘 要 】

Background CO₂ mole fraction and seasonal variations, measured at Zhongshan station, Antarctica, for 2010 through 2013, exhibit the expected lowest mole fraction in March with a peak in November. Irrespective of wind direction, the mole fraction of CO₂ distributes evenly after polluted air from station operations is removed from the data sets. The daily range of average CO₂ mole fraction in all four seasons is small. The monthly mean CO₂ mole fraction at Zhongshan station is similar to that of other stations in Antarctica, with seasonal CO₂ amplitudes in the order of 384–392 µmol∙mol⁻¹. The annual increase in recent years is about 2 µmol∙mol⁻¹∙yr⁻¹. There is no appreciable difference between CO₂ mole fractions around the coast of Antarctica and in the interior, showing that CO₂ observed in Antarctica has been fully mixed in the atmosphere as it moves from the north through the southern hemisphere.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.