Measurements of atmospheric NO<sub>3</sub> radicals in Hefei using LED-based long path differential optical absorption spectroscopy

Measurements of atmospheric NO₃ radicals in Hefei using LED-based long path differential optical absorption spectroscopy

Lu Xue^{1, 2}, Qin Min^{1, †,}, Xie Pin-Hua^{1, 3, ‡,}, Duan Jun¹, Fang Wu¹, Ling Liu-Yi^{1, 4}, Shen Lan-Lan¹, Liu Jian-Guo^{1, 3}, Liu Wen-Qing^{1, 3}

(a) Environmental temperature and LED temperature, (b) time series of residual noise with or without temperature control.