where γ = lapse rate in given in units of temperature divided by units of altitude, T = temperature, and z = altitude, and points 1 and 2 are measurements at two different altitudes.
There are three lapse rates used in meteorology: ...
Lapse Rate The rate of change of an atmospheric variable, usually temperature, with height.
lapse rate"The decrease of an atmospheric variable with height, the variable being temperature, unless otherwise specified.
LAPSE RATE The change of an atmospheric variable, usually temperature, with height. A steep lapse rate implies a rapid decrease in temperature with height and is a sign of instability. Related term: absolute instability ...
Lapse rate - permalink - collapse
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The rate of change of an atmospheric variable, usually temperature, with height.
Lapse rate (G)- The change of temperature with a change in height. Also a rate of cooling. A positive lapse rate indicates temperatures cooling as height increases while a negative lapse rate indicates an inversion.
LAPSE RATE: The change in temperature with altitude in the atmosphere.
LIKELY: In probability of precipitation statements, the equivalent of a 60 or 70 percent chance.
Lapse rate: The decrease of temperature with increasing altitude.
Latent heat: The amount of heat taken in or released by water when it changes phase.
LAPSE RATE- The rate of temperature decrease with height. High lapse rates are indicative a strong cooling with height and this can lead to instability.
Lapse Rate - See Environmental Lapse Rate; Normal Lapse Rate.
Latent Heat - The energy absorbed or released during a change of state.
lapse rate The rapidity with which temperature decreases with altitude. The normal lapse rate is defined to be 3.6 degrees F per 1000 feet change in altitude. The dry adiabatic lapse rate is about 5.
lapse rate—The rate of decrease of an atmospheric variable with height; commonly refers to decrease of temperature with height.
LAPSE RATE - The change (usually a decrease) in the temperature of air with an increase in altitude. The average lapse rate of rising air is about 3.5 degrees fahrenheit per 1,000 feet.
Lapse rate: the rate of decrease of air temperature with increase of elevation vertically above a given location.
LAPSE RATE - The rate a variable such as temperature changes with an increase of altitude above the ground. High lapse rates for temperature decreasing with height near the ground can make the atmosphere unstable, and lead to convection.
High lapse rates or a source of low level moisture will yield large values of TT. However, high lapse rates can produce large TT, with little supporting low level moisture.
Lapse Rate - the rate of change of temperature with height
Latent Heat - the heat released or absorbed by a substance during a phase change
Lee Side - the side of an object (e.g., mountain) that is sheltered from the wind ...
Adiabatic lapse rate - how quickly the temperature of a moving parcel of air changes, even though no heat enters or leaves it.
Adiabatic Lapse Rate
The rate of decrease of temperature experienced by a parcel of air when it is lifted in the atmosphere under the restriction that it cannot exchange heat with its environment.
Dry Adiabatic Lapse Rate
Dam
In hydrologic terms, any artificial barrier which impounds or diverts water. The dam is generally hydrologically significant if it is:
1.
Dry Adiabatic Lapse Rate
The rate at which the temperature of unsaturated air changes as it ascends or descends through the atmosphere. Approximates to some 10 degrees Celsius per kilometre.
Dust Devil ...
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normal lapse rate is a global average rate of temperature reduction with elevation (6.4 °C/1000 m)
environmental lapse rate is the actual lapse rate on a given day at a specific location ...
dry adiabatic lapse rate: the rate at which an unsaturated parcel of air will decrease in temperature as it moves through the atmosphere. The rate is a decrease of about 9.767°C per kilometer upwards.
Dry adiabatic lapse rate Rising unsaturated (clear) air parcels cool at the rate of about 10 Celsius degrees per 1000 m of uplift (or 5.5 Fahrenheit degrees per 1000 ft).
ABSOLUTE INSTABILITY When the lapse rate of a column of air is greater than the dry adiatabtic lapse rate. The term absolute is used because this applies whether or not the air is dry or saturated. See instability.
Conditionally Unstable AirAn atmospheric condition that exists when the environmental lapse rate is less than the dry adiabatic lapse rate but greater than the moist adiabatic lapse rate.
Neutral StabilityAn atmospheric condition that exists in unsaturated air when the environmental lapse rate equals the dry adiabatic rate, or in saturated air when the environmental lapse rate equals the moist adiabatic rate.
See lapse rate. Lapse rate The decrease of an atmospheric variable with height, the variable being temperature, unless otherwise specified. Large calorie See calorie.
Stability: Absolute Instability: Adiabatic lapse rate greater than 5 degs. F.,3.0 degs. C. per 1,000 feet. Stability: Absolute Stability Isothermal: Temperature remaing the same from surface to some point aloft.
Environmental Lapse RateThe rate of decrease of air temperature with height, usually measured with a radiosonde.Environmental Temperature SoundingAn instantaneous or near-instantaneous sounding of temperature as a function of height.
TropopauseThe upper boundary of the troposphere, usually characterized by an abrupt change in lapse rate from positive (decreasing temperature with height) to neutral or negative (temperature constant or increasing with height).
tension of the water becomes negligible at wavelengths of greater than a few centimeters (see capillary wave). 2) Heterogeneous fluids, such as the atmosphere, have static stability arising from a stratification in which the environmental lapse rate ...
A simple representation of the mean lapse rate within a layer of the atmosphere, obtained by calculating the difference between observed temperatures at the bottom and top of the layer.
The average condition of temperature change in the Troposphere is for there to be an overall decrease of temperature with increasing height: a positive lapse rate (see Q/A 2A.6).
As air rises up the western side of the Great Dividing Range it cools at the dry adiabatic lapse rate (DALR).
Tropopause The boundary layer between the troposphere and stratosphere, where an abrupt change in temperature lapse rate usually occurs.
The lapse rate over the water is often superadiabatic, so the descending air spilling off the edge of the plateau is still cooler than its surroundings when it reaches the coast, and the instability causes storms.
The cold region in the earth's atmosphere located about 10 km (8 mi) above the surface, at which the usual vertical temperature decrease in the troposphere ceases; by convention, the tropopause is defined as where the temperature lapse rate to less ...
Mixing Air movements (usually vertical) that make the properties of the air with a parcel homogeneous. It may result in a lapse rate approaching the moist or dry adiabatic rate.
 See also: Temperature, Atmosphere, Air, Water, Pressure
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