saturated adiabatic lapse rate


saturated adiabatic lapse rate
The rate of cooling of ascending saturated air. It is approximately 1.5°C/1000 ft but may reduce to as little as 1°C/1000 ft in the warm saturated tropical regions. It also may exceed 2°C/1000 ft when the temperature of the air falls below the freezing point until it is no longer saturated and the lapse rate falls to that of dry air.

Aviation dictionary. 2014.

Look at other dictionaries:

  • saturated adiabatic lapse rate —   the rate of fall in air temperature by adiabatic change as saturated air gains altitude. Varies between 4 and 9蚓 per 1000m. is slower than the DALR as latent heat is released during condensation …   Geography glossary

  • adiabatic lapse rate — The rate at which the temperature changes as the air rises or falls without the heat being taken away from or given to the air mass. The standard adiabatic lapse rate is 3°C/1000 ft, 5.4°F/1000 ft, or 9.8°C/km when air is dry (dry adiabatic lapse …   Aviation dictionary

  • Lapse rate — The lapse rate is defined as the rate of decrease with height for an atmospheric variable. The variable involved is temperature unless specified otherwise.[1][2] The terminology arises from the word lapse in the sense of a decrease or decline;… …   Wikipedia

  • lapse rate — The rate of decrease of an atmospheric variable with height. However, the term normally refers to the fall of temperature with height. The three types of lapse rates referred to in meteorology are dry adiabatic lapse rate, saturated adiabatic… …   Aviation dictionary

  • lapse rate — Meteorol. the rate of decrease of atmospheric temperature with increase of elevation vertically above a given location. [1915 20] * * * ▪ meteorology       rate of change in temperature observed while moving upward through the Earth s atmosphere …   Universalium

  • environmental lapse rate — The lapse rate in the surrounding air within which a volume of air is being lifted. The average rate is 2°C/1,000 ft. This should not be confused with dry adiabatic lapse rate (DALR) and saturated adiabatic lapse rate (SALR), in which the lapse… …   Aviation dictionary

  • lapse rates —   the rates at which air temperature decreases with altitude. Three types:   environmental lapse rate (ELR)   Dry adiabatic lapse rate (DALR) Saturated adiabatic lapse rate (SALR) …   Geography glossary

  • pseudolapse rate — The rate of cooling of ascending saturated air. It is approximately 1.5°C/1000 ft but may reduce to as little as 1°C/1000 ft in the warm saturated tropical regions. It may exceed 2°C/1000 ft when the temperature of the air falls below the… …   Aviation dictionary

  • moist adiabatic rate — The rate of cooling of ascending saturated air. It is approximately 1.5°C/1000 ft but may reduce to as little as 1°C/1000 ft in the warm saturated tropical regions and may exceed 2°C/1000 ft when the temperature of the air falls below the… …   Aviation dictionary

  • absolute instability — As it relates to meteorology, the state of a layer of air within the atmosphere in which a parcel of air, if given an upward push, will move away from its initial level without further outside force being applied. It is that condition in which… …   Aviation dictionary


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