Figure 5: Enhancement ratios of CO and ozone from CAST and CONTRAST.
From: A pervasive role for biomass burning in tropical high ozone/low water structures
Regression of CO against O3 for the data shown in Fig. 2 for pressures between 300 and 700 hPa (a–d). The ΔO3/ΔCO ratio for all profiles suggests significantly aged air, consistent with the back trajectory and photochemical aging analyses. The dashed red line is the best fit via orthogonal linear regression. Flight dates, slope and r2 values are shown for all panels.
