Supplementary material to "Insights into the long-term (2005–2021) spatiotemporal evolution of summer ozone production sensitivity in the Northern Hemisphere derived with OMI"

Figure S1.OMI-derived trends in summer mean (June-August) HCHO (top row) and NO2 (middle row) VCDs (left column; units in molecule cm -2 yr -1 ), and corresponding FNR values (bottom row; unitless yr -1 ) at 0.1° × 0.1° latitude × longitude grid cells between 2005 and 2021.Values in the bottom row are displayed only for polluted regions (OMI NO2 VCD > 1.2 × 10 15 molecule cm -2 ).The white color indicates data gaps or oceanic grid cells.All trend values that are displayed are at a 99% confidence level (top panels) and for all grid cells (bottom panels).