MTPR

clouds

'Field Notes:' How 'Moon Dogs' Are Made

Dec 3, 2017
A lunar halo, or moon dog. Ruka, Finland
Timo Newton-Syms (CC-BY-SA-2)

Moon dogs have many names: lunar halos, moon rings, or winter rings. Their scientific name is “paraselenae” and they are made visible by a combination of specific circumstances.

Field Notes: Winter Clouds

Feb 16, 2016
Winter clouds
(PD)

At no other time is the parting of clouds felt more powerfully than outdoors, at the height of winter.