Atmospheric Stability 1
Atmospheric Stability 1 : Natural Disaster. A meteorological term referring to the resistance of the atmosphere to turbulence and vertical motion (upward). With reference to fire management activities the atmosphere is usually described as neutral, stable, or unstable with respect to the dry adiabatic lapse rate (DALR): Neutral Atmosphere: The temperature decrease with altitude is equal to the DALR (the atmosphere neither aids nor hinders largescale vertical motion). Stable Atmosphere: The temperature decrease with altitude is less than the DALR (the atmosphere tends to suppress large-scale vertical motion). Unstable Atmosphere: The temperature decrease with altitude is greater than the DALR (the atmosphere tends to support large scale vertical motion)
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