Open AccessGround-based Measurements of Atmospheric Trace Gases in Beijing during the Olympic Games
Author(s) -
Jie Cheng
Publication year - 2019
Publication title -
sci
Language(s) - English
Resource type - Journals
ISSN - 2413-4155
DOI - 10.3390/sci1010018
Subject(s) - trace gas , beijing , ozone , environmental science , meteorology , atmospheric chemistry , atmospheric sciences , remote sensing , methane , chemistry , physics , geology , geography , china , archaeology , organic chemistry
A portable Fourier Transform Spectrometer (B3M-IR) is built and used to measure atmospheric trace gases in the city of Beijing during Olympic Games in 2008. A short description of the instrument is first provided in this paper. A detailed spectral analysis is then presented. The total columns of ozone (O3), carbon monoxide (CO), methane (CH4) and nitrous oxide (N2O) are retrieved from the ground-based solar absorption spectra recorded by the B3M-IR during the Olympic Games. Lacking validation data, only the retrieved total column of O3 is compared with that retrieved by MAX-DOAS, which is deployed at the same station. The mean difference between the two methods of measurement is 6.5%, demonstrating the performance and reliability of B3M-IR.