looking at is the effect of the surface winds blowing across a region that has a lot of fine particles that can be blown up into the air and blown by the winds over very long distances. using models like this help scientists understand what's happening to me at satisfying. other projects concentrate on collecting actual data about atmospheric particles dr robert levy has been working on a long time global aerosol record. so this is so that the time theories of from the modus terra satellite we are trying to create global observations of aerosol these are not modeled either based on camera like images how it works is satellites measure light reflected from the earth and you can see that there's places on the globe where you see lots of aerosol which is a bright orange color and you can see the hot spots around the globe you see the dust and in africa biomass burning in the amazon. what we don't have from