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  2. Frost - Wikipedia

    en.wikipedia.org/wiki/Frost

    Hoar frost may freeze in such low-lying cold air even when the air temperature a few feet above ground is well above freezing. The word "hoar" comes from an Old English adjective that means "showing signs of old age". In this context, it refers to the frost that makes trees and bushes look like white hair. Hoar frost may have different names ...

  3. Ground frost - Wikipedia

    en.wikipedia.org/wiki/Ground_frost

    The three main types of ground frost are radiation frost (), advection frost (advection hoar frost) and evaporation frost.The latter is a rare type which occurs when surface moisture evaporates into drier air causing its temperature at the surface to fall at or under the freezing point of water. [1]

  4. Freezing air temperature - Wikipedia

    en.wikipedia.org/wiki/Freezing_air_temperature

    Freezing [1] or frost occurs when the air temperature falls below the freezing point of water (0 °C, 32 °F, 273 K). This is usually measured at the height of 1.2 metres above the ground surface. This is usually measured at the height of 1.2 metres above the ground surface.

  5. Inversion (meteorology) - Wikipedia

    en.wikipedia.org/wiki/Inversion_(meteorology)

    In meteorology, an inversion (or temperature inversion) is a phenomenon in which a layer of warmer air overlies cooler air. Normally, air temperature gradually decreases as altitude increases, but this relationship is reversed in an inversion. [2] An inversion traps air pollution, such as smog, near the ground.

  6. Frost line - Wikipedia

    en.wikipedia.org/wiki/Frost_line

    The frost depth depends on the climatic conditions of an area, the heat transfer properties of the soil and adjacent materials, and on nearby heat sources. For example, snow cover and asphalt insulate the ground and homes can heat the ground (see also heat island). The line varies by latitude, it is deeper closer to the poles.

  7. How to Protect Your Flowers From Frost So They Can ... - AOL

    www.aol.com/protect-flowers-frost-survive-cold...

    Safeguard your garden from the chill with these savvy tips.

  8. Frost and snowflakes? Season's coolest air so far to settle ...

    www.aol.com/weather/frost-snowflakes-seasons...

    Initially, a dry air mass and cool breeze can limit areas that can get frost, but the risk can increase later in the week as high pressure moves overhead by Wednesday night and Thursday night and ...

  9. Cryoseism - Wikipedia

    en.wikipedia.org/wiki/Cryoseism

    A region must be susceptible to cold air masses; The ground must undergo saturation from thaw or liquid precipitation prior to an intruding cold air mass; Most frost quakes are associated with minor snow cover on the ground without a significant amount of snow to insulate the ground (i.e., less than 6 inches (15 cm))

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