Polar-orbiting Satellites
Now let's view polar imagery of the same fire. We'll look at four high-quality images from a two-hour period. This first image, from the DMSP OLS satellite, shows substantial low-level smoke from the growing Chisholm fire.
This NOAA AVHRR product was taken two hours later, with embedded hotspots overlaid in red on the visible image. The flat bubble in the center represents the massive pyroCb cloud that developed from the fire.
Two more DMSP images were taken only minutes later and show the advantage of frequent overpasses that comes from using polar-orbiting data at higher latitudes.
