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Atmospheric instability is a condition where the Earth's atmosphere is considered to be unstable and as a result local weather is highly variable through distance and time. [ clarification needed ] [ 1 ] Atmospheric instability encourages vertical motion, which is directly correlated to different types of weather systems and their severity.
The situation in which convective inhibition is measured is when layers of warmer air are above a particular region of air. The effect of having warm air above a cooler air parcel is to prevent the cooler air parcel from rising into the atmosphere. This creates a stable region of air.
In meteorology, the planetary boundary layer (PBL), also known as the atmospheric boundary layer (ABL) or peplosphere, is the lowest part of the atmosphere and its behaviour is directly influenced by its contact with a planetary surface. [1] On Earth it usually responds to changes in surface radiative forcing in an hour or less.
Atmospheric convection is the result of a parcel-environment instability (temperature difference layer) in the atmosphere. [ jargon ] Different lapse rates within dry and moist air masses lead to instability.
The ocean (and, although more variably, the atmosphere) is stratified through density. At rest, surfaces of constant density (known as isopycnals in the ocean) will be parallel to surfaces of constant pressure . However, various processes such as geostrophy and upwelling can result in isopycnals becoming tilted relative to isobars.
Several bodies have been found after parts of southern and eastern Spain were hit by severe flash flooding on Tuesday, with some locations receiving up to 12 inches of rain in just a few hours ...
It is a similar phenomenon to the heat dome, and the two typically coincide as functions of strong areas of high atmospheric pressure, with both being most common during the warm season. [ 1 ] In the United States , ring of fire patterns are also commonly contributing factors to warm-season derechos , as extreme atmospheric instability builds ...
Tephigram Annotated tephigram. A tephigram is one of a number [Note 1] of thermodynamic diagrams commonly used in weather analysis and forecasting. The name evolved from the original name "T--gram" to describe the axes of temperature (T) and entropy used to create the plot. [1]