Earth:Supercell composite parameter
From HandWiki
Short description: American thunderstorm prediction index
The Supercell Composite Parameter, often abbreviated as SCP, is a multi-parameter index used by the Storm Prediction Center that outlines areas of the United States where the development of supercell thunderstorms is favorable.[1] The parameter uses convective available potential energy, storm relative helicity and vertical wind shear to determine specific areas.[2] A value of 1 indicates a normal atmosphere while values above two are conducive for supercells.[3]
Equation
Two equations can be used to conclude the supercell composite for an area:[3]
SCP = (MUCAPE/1000 J/Kg^-1) x (0-3 km SRH/150 m^2s-^2) x (BRN denominator/40 m^2s-^2)
SCP = (MUCAPE/1000 J/Kg^-1) x (Effective shear/20 m^2s-^2) x (Effective SRH/50 m^2s-^2)
See also
References
- ↑ "Mesoscale Parameters". https://www.weather.gov/source/zhu/ZHU_Training_Page/convective_parameters/Sounding_Stuff/MesoscaleParameters.html.
- ↑ "Climatology of the Supercell Composite Parameter (1979–2004)". August 5, 2005. p. 2. https://caps.ou.edu/reu/reu05/finalpapers/Smith-finalpaper.pdf.
- ↑ 3.0 3.1 "Utility of Severe Weather Parameters and Indices". 2017. pp. 28-29. https://www.weather.gov/media/crp/Severe_Weather_Parameters_Tinsley_2017.pdf.
 |  |
