potential instability

potential instability

[pə′ten·chəl ‚in·stə′bil·əd·ē]
(meteorology)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

convective instability

convective instabilityclick for a larger image
A parcel of air is stable at A and B and becomes unstable at C indicating convective instability from C onwards.
The state of the atmosphere in which there is a high relative humidity at low levels and a low relative humidity at upper levels, such that if a low layer of air is lifted bodily, the ELR (environmental lapse rate) value through the layer will gradually increase until it attains an unstable value. ELR is the lapse rate in the surrounding air within which a volume of air is being lifted. DALR, or dry adiabatic lapse rate, and SALR, or saturated adiabatic lapse rate, are lapse rates of dry and saturated air masses, respectively, when they are lifted adiabatically. The values of DALR and SALR are 3°C and 1.5°C/1000 ft, respectively. This is often seen in cold fronts, where convective instability is the major cause of instability. Also known as potential instability.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
It also can be a source of potential instability due to the tendency of taking more risk," he added.
A spokesperson for the rescue team said: "Due to an ongoing fire on Hilbre Island and the potential instability of cliff edges, we would urge members of the public to please not attempt to make their way over to Hilbre Island."
"With potential instability in the financial markets ahead, this funding gives us additional certainty of being able to deliver our development aims for future customers.
"With potential instability in the financial markets lying ahead, this funding will give us the additional certainty of being able to deliver our development aims for future customers.
If the slope of the ice shelf is sufficiently steep, the water may flow off the ice shelf to the ocean in large surface rivers, mitigating against any potential instability.
Fitch warned that a reversal of reforms or a departure from the existing policy framework, the deterioration in external balances and a potential instability in the financial system will likely bring down the rating of the country.
"It was their land." Reports submitted with the application reveal the site was once mined for coal and there is potential instability which would have to be addressed before development could begin.
"Nine months ago, you were on the brink of the abyss but since then from being a country with potential instability you have turned into a country with real possibility.
The most immediate cause of potential instability is North Korea, which now poses not just a conventional military threat to South Korea, but also a nuclear threat to all of Asia, as well as to the US.
Erdogan told the Reuters news agency on Tuesday that the referendum was necessary to avert potential instability, be it from those associated with the coup or Islamist or Kurdish militants.

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