Fig. 1: The concentrations of measured VOCs (M-VOCs) and O3 from January to December in 2018. | npj Climate and Atmospheric Science

Fig. 1: The concentrations of measured VOCs (M-VOCs) and O3 from January to December in 2018.

From: Implications for ozone control by understanding the survivor bias in observed ozone-volatile organic compounds system

Fig. 1

Bold solid lines and shaded sections show the observed mean and standard deviation, respectively. From summer to winter, the variations of VOCs and O3 show clear opposite trends. Annual mean concentration of M-VOCs was about 21.4 ± 26.8 ppbv, varying between 10.8 ± 9.3 ppbv in summer and 32.6 ± 26.1 ppbv in winter. The annual mean concentration of O3 was about 20.4 ± 0.1 ppbv, ranging from 11.4 ± 10.4 ppbv (winter) to 40.7 ± 25.3 ppbv (summer). The hourly concentrations of measured VOCs, four VOCs categories and O3 are shown in Supplementary Fig. 1.

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