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Quantitative bias estimates for tropospheric NO<sub>2</sub> columns retrieved from SCIAMACHY, OMI, and GOME-2 using a common standard for East Asia

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Fig. 1. Locations of MAX-DOAS observations on a monthly mean map (0.5 ◦ grid) of GOME-2 tropospheric NO 2 VCD data in May 2010.
Fig. 3. Same as Fig. 2 but the first, second, and third rows are for SCIAMACHY, OMI, and GOME-2, respectively
Table 2. Median values of tropospheric NO 2 columns and AOD for data used in the SCIAMACHY/MAXDOAS correlation analysis with x = 0.50 ◦
Fig. 6. Dependence of satellite-retrieved tropospheric NO 2 VCDs on the coincidence criterion x over each measurement site
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