On 25 August there was another pyroCb east of Lake Baikal in Russia. The first at 52.6 N 109.5 E and the second at 53.4 N 109.8 E. Himawari-8 detected the smoke plume and clouds around the fires, as well as the fire hot spots. Starting at 02:00 UTC on August 25, the animation below shows visible (.64 μm) on the left and shortwave IR (3.9 μm) on the right (click image to play animation). In the shortwave IR images the darker black to red pixels indicate very hot IR brightness temperatures exhibited by the fire source region.
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Himawari-8 0.64 μm visible (left) and 3.9 μm shortwave IR (right) images (click to play animation)
Himawari-8 10.4 μm IR channel imagery the minimum cloud-top IR brightness temperatures could be found. The animation below, starting at 02:00 UTC on 25 August, shows that the pyroCb reached around -52.8 ºC (yellow color enhancement) at 04:30 UTC.
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Himawari-8 10.4 μm IR images (click to play animation)
OMPS AI index images (courtesy of Colin Seftor) shows the transport of smoke. There are high AI Index values northeast of the lake, which is consistent of the smoke trajectory in the animations above.
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OMPS Aerosol Index image on 26 August (click to enlarge)
