COLD AIR "LAKES," FROST POCKETS, & ACCUMULATION AREAS:
Without having any drainage, the freezing air fills an area, similar to a bowl or lake.
Accumulation Area Air Flow Map
SWALES & CANYONS:
A flow of freezing air is funneled into an area such as a swale or canyon causing a build-up of cold air.
Freezing air moves downhill and builds up along a canal bank, reservoir bank, berm, elevated road, trees and shrubs, or other obstructions.
Flooding occurs when cold air accumulates below an orchard, builds up, and then overflows the contained area.
To drain cold air from flat areas, artificial or natural barriers surrounding the growing area may be necessary. These contain the cold air and allows for its removal with the Shur Farms Cold Air Drain®.
Frost settles in low areas creating numerous frost prone patches.