This remarkable video from NASA GSFC Space Science shown aerosol flows in the troposphere. The animation shows the emission and transport of key tropospheric aerosols from August 17, 2006 to April 10, 2007. It shows the aerosol optical thickness of black and organic carbon (in green), dust (in red/orange), sulfates (in white), and sea salt (in blue) from a 10 km resolution GEOS-5 “nature run.”
What is most interesting to me is that huge continuous dust storm out of Africa. The Trade Winds pick up the dust. When the Trade Winds blow west this dust fertilizes the Atlantic equatorial ocean.
Also interesting is the sulfate flows from populated areas. Notice that the heaviest flows come from China and India, then Europe, then North America. Fascinating.