Spatial and temporal distribution characteristics of atmospheric CO2 in central China
XIA Ling-jun1, LIU Li-xin2, LI Bo-zhen1, ZHOU Ling-xi3
1. Jiangxi Ecological Meteorology Center, Nanchang 330096, China;
2. Meteorological Observation Center of China Meteorological Administration, Beijing 100081, China;
3. Chinese Academy of Meteorological Sciences, Beijing 100081, China
Based on retrieved CO2 products of GOSAT and AIRS, the spatial and temporal distribution characteristics of CO2 in central areas of China were analyzed. The annual CO2 retrieved from GOSAT range from 389.36×10-6 in 2010 to 396.52×10-6 in 2013, with a growth rate of 2.39×10-6per year. The annual mean in central areas of China were slightly lower than Yangze River Delta (YZD), but higher than Jing-Jin-Ji area (JJJ) and Northeastern China region (NCR). The CO2 in Hunan and Jiangxi province was with the highest values, and it was with the lowest values over north areas of Shanxi province. The annual CO2 retrieved from AIRS varied from 390.48×10-6 in 2010 to 396.50×10-6 in 2013, with a growth rate of 2.01×10-6 per year, and the annual mean CO2 were similar with YZD, while slightly lower than JJJ and NCR. Due to small impact from ground sources and sinks, the CO2 seasonal amplitude retrieved from AIRS was smaller than that of GOSAT. On the contrary, high-value regions of CO2 from AIRS mainly distributed over Henan and Shanxi, and the low-value regions presented in Hunan and Jiangxi, which was likely due to that GOSAT and AIRS products represented CO2 variations over different height.
夏玲君, 刘立新, 李柏贞, 周凌晞. 我国中部地区大气CO2柱浓度时空分布[J]. 中国环境科学, 2018, 38(8): 2811-2819.
XIA Ling-jun, LIU Li-xin, LI Bo-zhen, ZHOU Ling-xi. Spatial and temporal distribution characteristics of atmospheric CO2 in central China. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(8): 2811-2819.
Aumann H H, Chahine M T, Gautier C, et al. AIRS/AMSU/HSB on the Aqua Mission:Design, Science Objectives, Data Products, and Processing Systems[J]. IEEE Transactions on Geoscience and Remote Sensing, 2003,41(2):253-246.
Zeng Z C, Lei L P, Guo L J, et al. Incorporating temporal variability to improve geostatistical analysis of satellite-observed CO2in China[J]. Chinese Science Bulletin, 2013,58:1948-1954.
[7]
张国君.中国CH4柱浓度时空分布及排量研究[D]. 上海:华东师范大学, 2011.
[8]
Liu L X, Zhou L X, Vaughn B, et al. Background variations of atmospheric CO2 and carbon stable isotopes at Waliguan (WLG) and Shangdianzi (SDZ) stations in China[J]. Journal Geophysical Research-Atmospheres, 2014,19(9):5602-5612.
[9]
Fang S X, Zhou L X, Tans P P, et al. In situ measurement of atmospheric CO2at the four WMO/GAW stations in China[J]. Atmospheric Chemistry and Physics, 2014,14:2541-2554.
Xia L J, Zhou L X, Tans P P, et al. Atmospheric CO2 and its δ13C measurements from flask sampling at Lin'an regional background station in China[J]. Atmospheric Environment, 2015,117:220-226.
Zhou L X, White J W C, Conway T J, et al. Long-term record of atmospheric CO2 and stable isotopic ratios at Waliguan Observatory:Seasonally averaged 1991~2002 source/sink signal, and a comparison of 1998~2002 record to the 11selected sites in the Northern Hemisphere[J]. Global Biogeochemical Cycles., 2006,20,DOI:10.1029/2004GB002431.
Zhang D, Tang J, Shi G, et al. Temporal and spatial variations of the atmospheric CO2 concentration in China[J]. Geophysical Research Letters, 2008,35,L03801,doi:10.1029/2007GL032531.
