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, icing conditions, etc.). Any given measure is valid for only a short period of time, often less than a day as variations in wind, sunlight, air masses and other factors may change the level. The 700 hPa pressure level (or about 3000 m above sea level) is generally assumed as a rough estimate of the freezing level.
Above the freezing altitude, 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, especially in cold weather. Whilst not given on general weather forecasts, it is used on bulletins giving forecasts for mountainous areas.
The freezinglevel, 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...
parent thunderstorm (similar to tornadoes) and lowered heights of the freezinglevel. In the mid-latitudes, hail forms near the interiors of continents,...
solid phases, is mixed with both, or transition between them at the freezinglevel. Liquid forms of precipitation include rain and drizzle and dew. Rain...
certain types of eruption plumes – particularly those rising above the freezinglevel or involving magma-water interaction. Ordinary thunderstorms produce...
mid-latitudes, as hail formation is considerably more likely when the freezinglevel is below the altitude of 11,000 feet (3,400 m). Entrainment of dry air...
Freezing rain is rain maintained at temperatures below freezing by the ambient air mass that causes freezing on contact with surfaces. Unlike a mixture...
atmosphere is slightly above the freezing point of water (0 °C or 32 °F). The depth of low-level warm air (below the freezinglevel) needed to melt snow falling...
higher but still fairly low, with around 100-130 cm per year. The local freezinglevel is about 4,200 m. The glacier's upper reaches are the coldest; it becomes...
The frost line—also known as frost depth or freezing depth—is most commonly the depth to which the groundwater in soil is expected to freeze. The frost...
Freezing food preserves it from the time it is prepared to the time it is eaten. Since early times[when?], farmers, fishermen, and trappers have preserved...
in a cloud that is below freezing. In addition, because of the great temperature difference between cloud and ground level, these ice crystals may melt...
Freezing behavior, also called the freeze response or being petrified, is a reaction to specific stimuli, most commonly observed in prey animals. When...
temperatures at the time indicated. An isotherm at 0 °C is called the freezinglevel. The term was coined by the Prussian geographer and naturalist Alexander...
aerodrome ICAO code for which the forecast is made, cloud levels and freezing (icing) levels, turbulence and vertical wind shear information. Example of...
greater when the cloud is closer to the ground. In the tropics, where the freezinglevel is generally higher in the atmosphere, only 10% of lightning flashes...
Individual quick freezing, usually abbreviated IQF, is a descriptive term for freezing methods used in the food processing industry. The food is in individual...
large enough to fall out of the cloud. As a result, freezing drizzle develops in shallow low-level stratus-type clouds where air saturation occurs entirely...
Semen cryopreservation (commonly called sperm banking or sperm freezing) is a procedure to preserve sperm cells. Semen can be used successfully indefinitely...
osmometer uses the solution's freezing point depression to establish its strength. It is also used to determine the level of osmotically appropriate body...
altitude (Aviation Area forecast). These include freezinglevel, icing, wind and turbulence levels, cloudy areas and thunderstorms at various altitudes...
greater, and/or non convective low−level wind shear. AIRMET ZULU (Icing) Moderate icing and provides freezinglevel heights. For an authority to issue...
Freezing is an anime series adapted from the manga of the same title written by Dall-Young Lim and illustrated by Kwang-Hyun Kim. Set in a slightly futuristic...
by descending air. Drizzle becomes freezing drizzle when the temperature at the surface drops below the freezing point. The thickness of a fog layer...
300 feet (2,800 m) level of Illumination Saddle overnight. Sunday morning, they abandoned a summit attempt and descended in freezing rain and snow, visibility...
Cryonics (from Greek: κρύος kryos meaning 'cold') is the low-temperature freezing (usually at −196 °C or −320.8 °F or 77.1 K) and storage of human remains...
up to 62.5% H3PO4 are eutectic, exhibiting freezing-point depression as low as -85°C. Beyond this freezing-point increases, reaching 21°C by 85% H3PO4...
needed is a knowledge of the water content in the thunderstorm, the freezinglevel and the height of the summit of the precipitation. One way of calculating...
A plumb bob may be in a container of water (when conditions are above freezing temperatures), molasses, very viscous oils or other liquids to dampen any...
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