English: Saharan dust blew over the Mediterranean Sea in late February 2013. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite took this picture on February 22. Most of the dust blew off the coast of Egypt, partially obscuring the satellite sensor’s view of the Nile Delta. An especially thick river of dust stretched northward past the Greek island of Kriti (Crete). In the north, the dust encountered cloudbanks.