Figure 4.

Impact of revised C₃H₈ emissions on GEOS-Chem simulation. Combined Pacific and Atlantic transects for ATom 4 aircraft campaign, which took place during Spring 2018, are shown in gold. The GEOS-Chem simulation using default C₃H₈ emissions are shown in blue and orange, referring to the Pacific and Atlantic transects, respectively. The GEOS-Chem simulation after implementing the revised C₃H₈ emissions is shown in green. The rest of the ATom and HIPPO campaigns are shown in Figures S35 and S36.