CONVECTIVE CLOUD FEATURES IN TYPICAL SYNOPTIC ENVIRONMENTS: THE WARM SECTOR - KEY PARAMETERS
by ZAMG
- Frontal Parameters (TFP, equivalent thickness):
The typical configurations of key parameters for fronts and thickness ridge are described in detail in the relevant conceptual model chapters (see Cold Front , Cold Front in Cold Advection , Cold Front in Warm Advection , Split Front , Arctic Cold Front , Warm Front Band , Warm Front Shield , Detached Warm Front , Occlusion , Instant Occlusion , Occlusion: Cold Conveyor Belt Type , Cold Air Development and Baroclinic Boundary ).
The relevant area is the thickness ridge ahead of the CF.
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24 August 1997/18.00 UTC - Meteosat IR image; blue: thermal front parameter 500/850 hPa, green: equivalent
thickness 500/850 hPa, yellow: Showalter index 500/850 hPa
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- Stability index (Showalter index):
An area with high probability for Cb development will normally have Showalter index with values below 3 units.
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24 August 1997/18.00 UTC - Meteosat IR image; blue: thermal front parameter 500/850 hPa, green: equivalent
thickness 500/850 hPa, yellow: Showalter index 500/850 hPa
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- Equivalent potential temperature at 850 hPa:
tongue of high values of ThetaE; MCS develop in the area of the maximum values
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24 August 1997/18.00 UTC - Meteosat IR image; blue: thermal front parameter 500/850 hPa, magenta:
ThetaE 850 hPa
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