How does frost form?

Frost on objects is just water vapor in the air that has deposited itself as ice onto a surface. Frost forms on objects close to the ground, such as blades of grass.At night, a blade of grass loses energy by emitting radiation (a non-lethal kind) while it gains energy by absorbing the energy emitted from surrounding objects. Under clear nighttime skies, objects near the ground emit more radiation than they receive from the sky, and so a blade of grass cools as its energy losses are greater than its energy gains. If the temperature of a grass blade gets cold enough and there is sufficient water vapor in the environment, frost will form on the grass. Continue reading →

How does frost form with Rusty Lord

How does frost form?

Frosty Conditions Expected Again Sunday Night

The Fascinating Forms of Frost – The City Voice

What is hoarfrost?

Science of Snow National Snow and Ice Data Center

FROSTYLAPSE II: Window frost forms in time lapse

When does the Piedmont Triad usually get its final frost and freeze? Gardeners, beware!

NWS Science Corner: How does Frost Form with Low Temps Warmer than 32F?

Iowa weather: Why frost happens even when temperatures don't reach freezing

How does frost form? Here's an explanation