Sketch about the two forces, pressure gradient and gravitation force, producing <b>Katabatic Wind</b> at the margin of an ice sheet or glacier. Offshore katabatic winds may form coastal polynyas.
<a href="//commons.wikimedia.org/wiki/User:Hgrobe" title="User:Hgrobe">Hannes Grobe</a>, Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
CC BY-SA 2.5
<span class="int-own-work" lang="en">Own work</span>