The freezing level, or 0°C (zero-degree) isotherm, represents the altitude in which the temperature is at 0°C (the freezing point of water) in a free atmosphere (i.e. allowing reflection of the sun by snow, etc.). Any given measure is valid for only a short period of time, often less than a day.
Above the freezing level, the temperature of the air is below freezing. Below it, the temperature is above freezing. The profile of this frontier, and its variations, are studied in meteorology, and are used for a variety of forecasts and predictions. Whilst not given on general weather forecasts, it is used on bulletins giving forecasts for mountainous areas.
Read more about Freezing Level: Measuring, Characteristics, Variations in The Isotherm
Famous quotes containing the words freezing and/or level:
“This is the Hour of Lead—
Remembered, if outlived,
As Freezing persons, recollect the Snow—
First—Chill—then Stupor—then the
letting go—”
—Emily Dickinson (1830–1886)
“Let still the woman take
An elder than herself. So wears she to him;
So sways she level in her husband’s heart.”
—William Shakespeare (1564–1616)