Smoke from wildfires in Alaska has traveled thousands of kilometers across the Northern Hemisphere to the Labrador Sea off the coast of Newfoundland, Canada. The smoke appears as gray swirls in the bottom right quadrant of the image. The image is from the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite on July 19, 2004.
NASA image courtesy Jacques Descloitres, MODIS Rapid Response Team at GSFC