Jian Li1, Chengcai Li1, Jietai Mao1, Dongwei Yang1, Dong Wang2, Lin Mei2, Guangming Shi1, Yefang Wang1, Xia Mao2
1. Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing 100871, China;
2. Meteorological Bureau of Shenzhen Municipality, Shenzhen 518040, China
AbstractThe total column-averaged volume mixing ratio of atmospheric carbon dioxide (XCO2 ) has been retrieved with high spectral resolution solar absorption data obtained from ground-based Fourier transform spectrometer (FTS) measurements at Xichong, a coastal site in the district of Shenzhen in southern China. Based on differential optical absorption spectroscopy (DOAS) theory, the XCO2 was retrieved by finding the best match of observed high spectral resolution solar absorption data and monochromatic radiation transfer model calculations. The averaged XCO2 in the whole observation period was about 394.9 ppm. The uncertainty of the retrieval was estimated to be 2.0 ppm (0.51 %) by comparing retrievals at two bands. The preliminary results show that XCO2 retrieved by this method can be used to validate satellite remote sensing of XCO2.
Citation:Jian Li, Chengcai Li, Jietai Mao, Dongwei Yang, Dong Wang, Lin Mei, Guangming Shi, Yefang Wang, Xia Mao, 2014: Retrieval of column-averaged volume mixing ratio of CO2 with ground-based high spectral resolution solar absorption. Chin. Sci. Bull. 59(14):1536-1540, DOI 10.1007/s11434-014-0261-2 (pdf).