Analysis of ACAM Data for Trace Gas Retrievals during the 2011 DISCOVER-AQ Campaign

Figure 3

Comparison of O₃ (left), CH₂O (middle column), and NO₂ (right) fitting in (top) relative RMS, (middle row) SCDs, and (bottom) precision of SCDs for ACAM measurements from July 21, 2011, using three different reference spectra: average zenith reference (blue), high-resolution solar irradiance convolved with instrument slit functions (black), and derived TOA solar irradiance from average nadir radiance spectrum (red).