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Progress in Earth and Planetary Science
Fig. 2 | Progress in Earth and Planetary Science

Fig. 2

From: Continuous multi-component MAX-DOAS observations for the planetary boundary layer ozone variation analysis at Chiba and Tsukuba, Japan, from 2013 to 2019

Fig. 2

Time series of O3 concentrations for the 0–1 km layer measured by ozonesondes launched at Tsukuba (Tateno), Japan (blue). The ozonesonde was launched around 14:30 LT once per week. The linear trend is shown by the blue line. Mean O3 concentrations for 13:00–15:00 LT retrieved from MAX-DOAS observations at Chiba and Tsukuba are shown daily in red and black, respectively. For clarity, MAX-DOAS data are shown only for the days when ozonesonde data were available. Error bars represent standard deviations within 13:00–15:00 LT (plus spatial variabilities in four different azimuth directions for Chiba)

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