Fig. 2: The mechanism through which NO can enhance the formation of highly oxygenated organic molecules (HOM) from monoterpene oxidation at 278 K. | Nature Communications

Fig. 2: The mechanism through which NO can enhance the formation of highly oxygenated organic molecules (HOM) from monoterpene oxidation at 278 K.

From: NO at low concentration can enhance the formation of highly oxygenated biogenic molecules in the atmosphere

Fig. 2

(a) Loss rates of p-HOM-RO2 (RO2 that can undergo autoxidation with nO < 7) as a function of NO concentration in the varying NO/NO2 experiment. Reactions of RO2 + HO2, RO2 + NO, and RO2 + RO2 are marked by pink, blue, and red, respectively. (b) The fraction of p-HOM-RO2 that can undergo autoxidation to HOM-RO2 with (the sum the blue and green fillings) and without (green fillings) NO-induced RO autoxidation in the varying NO/NO2 experiment. (c) Comparison between HOM yields with (solid blue line) and without NO (dashed green line) RO autoxidation. In the simulation of Fig. 2c, the concentrations of monoterpene, O3, and NO2 are constrained at 1200 pptv, 40 ppbv and 1 ppbv.

Back to article page