Velum
(Section 2.2.2.5.2)An accessory cloud veil of great horizontal extent, close above or attached to the upper part of one or several cumuliform clouds that often pierce it.
Occurs principally with Cumulus and Cumulonimbus.
An accessory cloud veil of great horizontal extent, close above or attached to the upper part of one or several cumuliform clouds that often pierce it.
Occurs principally with Cumulus and Cumulonimbus.