(a) MODIS deep blue midvisible AOD of 27 August; the grey area denotes no retrieval by MODIS. (b) CARMA simulated midvisible AOD for 20Z–22Z of 27 August. (c) Net solar flux (W m−2 at midvisible) at surface simulated in CARMA for the to Rim Fire smoke simulation minus the control, 20Z–22Z of 27 August. (d) Surface dimming efficiency for rim fire smoke for 20Z–22Z of 27 August: surface dimming per AOD of smoke (W m−2 per unit of midvisible AOD). Observation of midvisible AOD (level 2) by AERONET sites (University of Nevada‐Reno: 39°N, 119°W; Rimrock: 46°N, 116°W; Missoula: 46°N, 114°W; University of Lethbridge: 49°N, 112°W) close to the smoke, are shown in filled cycles. AERONET observations are mostly taken between 20 and 22Z of 27 August. Due to limited observation on 27 August, the AOD data of University of Nevada‐Reno is taken at 23Z of 27 August.