Astronaut Alex Gerst captured from ISS the dust and clouds over the Sahara Desert in Libya.

Credit: NASA

It is considered more than half of the dust deposited in the ocean lifts off from the Sahara Desert region. According to NASA, the Saharan dusts contain rock minerals such as phosphorous, an essential nutrient for plant proteins and growth, and is thought to provide nutrients for the Atlantic Ocean and distant Americas. In the photo, winds appear to be coming out of the east (left of the image), and the sun is setting to the west (right). Billowing cumulus and cumulonimbus clouds suggest that a cold, windy front was moving across the desert, perhaps a haboob (a type of intense dust storm carried on an atmospheric gravity current).

The local scenery on the ground is as follows.

Credit: Credit: Françoise GUICHARD/Laurent KERGOAT/CNRS Photothèque

Reference: Dust and Clouds Dance Over the Sahara (NASA Earth Observatory)
See earthview photo gallery: LiVEARTH