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Because the temperature is often a few degrees colder right at the surface. This is because cold air sinks, and if it is not mixed (as under calm conditions) the temperature will be colder at the surface than it is 2 meters above ground, where temperature is officially measured.
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∙ 13y ago
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How can winter white frost can form on the ground when minimum temperature indicates well above freezing?
It can't if it is "well" above freezing, but certainly if it is only a few degrees. The surface on a calm, cold night will radiate heat away from it rapidly. If there is little wind to mix the air, the coldest air near the surface will sink to the ground so that the temperature right at the surface where frost forms is at or just below the freezing point, while just above that where temperature is officially measured (2 meters) it can be several degrees warmer.
What is the Definition of frost?
the definition of frost is:ice that has been deposited on a surface with a temperature that is below freezing. so yeah.
Why are greenhouses completely or partially underground?
To take advantage of the constant temperature of the ground below the frost line. While it is freezing above ground...beneath the ground maintains an average temperature of 75%
Is it a high temperature in Saturn?
no its freezing cold because it is past the frost line.
Water drops that fall when the temperature is above freezing?
rain because if its above freezing then it wont be snow or freezing rain because they would freeze below freezing and not above freezing:)
In what zones does the temperature seldomly rise above freezing?
In the polar region/zone, the temperature seldom rises above freezing. Ice Cap A+
What is the temperature for the ipod touch to stay from freezing?
about above 0 degrees but it would be better if it was above freezing about above 0 degrees but it would be better if it was above freezing
What conditions are required for it to sleet?
ground temperature below freezing, and air temperature slightly above freezing.
What temperature is 70 degrees above freezing?
If you are referring to 70° above freezing in Celsius, then it is 70° C If you are referring to 70° above freezing in Fahrenheit, then it is 102° F
How does water vapor become frost?
When water vapor meets a surface that is below the freezing temperature and below the dew point, it turns into frost.
What climate does temperature seldom rise above freezing?
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What temperature can you caulk outside?
Usually above freezing, and keep the caulking from freezing also.
