Novel infrared differential optical absorption spectroscopy remote sensing system to measure carbon dioxide emission<xref rid="cpb_28_1_013301_fn1" ref-type="fn">*</xref><fn id="cpb_28_1_013301_fn1"><label>*</label><p>Project supported by the Key Program of the National Natural Science Foundation of China (Grant No. 41530644).</p></fn>

Novel infrared differential optical absorption spectroscopy remote sensing system to measure carbon dioxide emission**

Project supported by the Key Program of the National Natural Science Foundation of China (Grant No. 41530644).

Wang Ru-Wen^{1, 2}, Xie Pin-Hua^{1, 2, 3, †}, Xu Jin^{1, ‡}, Li Ang¹

Example of 7 × 10⁵ ppmv. (a) The sample gas measurement spectrum along with reference and background spectra, where OD indicates optical density; (b) retrieval results.