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)
“Insurrection:... insurrection as soon as circumstances allow: insurrection, strenuous, ubiquitous: the insurrection of the masses: the holy war of the oppressed: the republic to make republicans: the people in action to initiate progress. Let the insurrection announce with its awful voice the decrees of God: let it clear and level the ground on which its own immortal structure shall be raised. Let it, like the Nile, flood all the country that it is destined to make fertile.”
—Giuseppe Mazzini (1805–1872)