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GEOPHYSICAL RESEARCH LETTERS,
VOL. 35,
L03801,
5 PP., 2008
doi:10.1029/2007GL032531
Temporal and spatial variations of the atmospheric CO2 concentration in China
Key Laboratory for Atmospheric Chemistry, Centre for Atmosphere Watch and Services, Chinese Academy of Meteorological Sciences, Beijing, China
Key Laboratory for Atmospheric Chemistry, Centre for Atmosphere Watch and Services, Chinese Academy of Meteorological Sciences, Beijing, China
Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
Center for Atmospheric and Oceanic Studies, Tohoku University, Sendai, Japan
Center for Atmospheric and Oceanic Studies, Tohoku University, Sendai, Japan
Institute of Earth Science, Miyagi University of Education, Sendai, Japan
Key Laboratory for Atmospheric Chemistry, Centre for Atmosphere Watch and Services, Chinese Academy of Meteorological Sciences, Beijing, China
National Institute of Polar Research, Tokyo, Japan
Frontier Research Center for Global Change, Yokohama, Japan
Research Institute for Humanity and Nature, Kyoto, Japan
Research Institute for Humanity and Nature, Kyoto, Japan
In order to understand the variations of atmospheric greenhouse gases over the Chinese mainland, an air sampling network was established in March 2003 that included one GAW global station, three GAW regional stations and three cooperative stations. Flask air samples were taken every week at the stations for 3 years. The secular increase and the seasonal variation in the CO2 concentration are clearly observable at all the stations, reflecting global as well as the regional terrestrial biospheric and human activities, as well as the local meteorological conditions. The average CO2 concentration depends on the station, with the lowest value observed at Mt. Waliguan and relatively high values observed at Fukang and Lin-an stations, located in the westernmost and eastern parts of China, respectively. The observed CO2 concentration variations are also discussed within the context of forward transport model simulations using CO2 fluxes derived by time-dependent inversion.
Received 31 October 2007; accepted 6 December 2007; published 1 February 2008.
Citation: (2008), Temporal and spatial variations of the atmospheric CO2 concentration in China, Geophys. Res. Lett., 35, L03801, doi:10.1029/2007GL032531.
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