Canada and US wildfire smoke crosses the Atlantic Ocean [1]
The Watchers, 7/4/13, Chillymanjaro
Smoke lofted above the part of the atmosphere closest to the ground (the boundary layer), where topography has a significant impact on winds, is spreading farther than smoke that remains trapped near the surface. Intense fires in Canada produced towering pyrocumulus clouds [2] that injected smoke high into the atmosphere. Upper-level winds then dispersed it across the Atlantic Ocean.
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