Zhengwei Qian, Yu Xie, Jie Chen, Peng Wu, Bin Liang, Changgong Shan, Qianqian Zhu, Xuan Peng, Ye Chen, Wei Wang. Variation Characteristics of Atmospheric Methane Detected by Ground-Based High-Resolution Fourier Transform Infrared Spectroscopy[J]. Acta Optica Sinica, 2025, 45(6): 0601002
- Acta Optica Sinica
- Vol. 45, Issue 6, 0601002 (2025)
Fig. 1. Laboratory instrument. (a) FTS; (b) solar tracker
Fig. 2. Individual measurements and daily averages of CH4 column concentration
Fig. 3. Time series of atmospheric column concentration (
Fig. 4. Monthly average column concentration of CH4
Fig. 5. Comparison of daily average data observed by ground-based FTS with satellite data
Fig. 6. Correlation between ground-based FTS data and satellite observation data
Fig. 7. Correlation of
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Table 1. Annual average of
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