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. Author manuscript; available in PMC: 2018 Sep 1.
Published in final edited form as: J Clim. 2017 Jul 27;30(17):6823–6850. doi: 10.1175/JCLI-D-16-0609.1

Fig. 12.

Fig. 12

PDFs of AOD from the NASA SEAC4RS campaign (August – September, 2013) over the southeastern and western continental United States (see inset map). We compare 550 nm AOD PDFs observed by the 4STAR instrument (red) aboard the NASA DC8 aircraft for the entire campaign to MERRA-2 (black) and M2REPLAY (blue) sampled along the flight paths and calculated over the same portion of the column (only above the aircraft) as reported by the instrument. Note the logarithmic spacing of the x-axis, and that the differences in modeled and observed AOD for the lowest maximum is within the reported instrumental error (±0.02 for SEAC4RS).