carol_malky
unusual clouds today
today the sky was full of unusual interesting clouds... have just found out what they are and what caused these.
Fallstreak Holes occur when the water temperature in the clouds is below freezing but the water has not yet frozen.
These water droplets need a nucleus to freeze or to be cooled below -40 °C.
When ice crystals do form, it will see off a domino effect due to the Bergeron process, causing the water vapour around it to freeze and fall.
This leaves a large hole in the cloud.
unusual clouds today
today the sky was full of unusual interesting clouds... have just found out what they are and what caused these.
Fallstreak Holes occur when the water temperature in the clouds is below freezing but the water has not yet frozen.
These water droplets need a nucleus to freeze or to be cooled below -40 °C.
When ice crystals do form, it will see off a domino effect due to the Bergeron process, causing the water vapour around it to freeze and fall.
This leaves a large hole in the cloud.