News tagged with volcanic ash clouds

NASA image: Night-shining clouds

In the late spring and summer, unusual clouds form high in the atmosphere above the polar regions of the world. As the lower atmosphere warms, the upper atmosphere gets coooler, and ice crystals form on meteor dust and other ...

dateJun 22, 2015 in Earth Sciences
shares12 comments 0

How atmospheric rivers form

If you want to assign blame on an overcast day, then cast your eyes on the tropics. Water vapor originating from the Earth's tropics is transported to midlatitudes on long filaments of flowing air that intermittently travel ...

dateJun 09, 2015 in Earth Sciences
shares590 comments 0

Volcanic ash proves inefficient cloud ice maker

When tons of ash spewed into the atmosphere from a 2010 Icelandic volcano it caused havoc for vacationers across Europe. But did it also dramatically change clouds? Researchers at Pacific Northwest National Laboratory found ...

dateMay 28, 2015 in Earth Sciences
shares45 comments 1

Kelut volcano grounds flights

The Kelut volcano on Indonesia's Java island erupted late last night. While disaster-management authorities are busy on the ground, satellites are tracking the major cloud of ash and sulphur dioxide as it spreads in the atmosphere.

dateFeb 17, 2014 in Earth Sciences
shares0 comments 0