CONVECTIVE CLOUD FEATURES IN TYPICAL SYNOPTIC ENVIRONMENTS: ENHANCEMENT OF CONVECTION BY PV - KEY PARAMETERS
by KNMI
- PV on an isentropic surface:
The distribution of PV shows a long narrow elongated zone of high PV values, often with separate maxima associated with a dark stripe in WV imagery. - 500 hPa geopotential height:
The distribution of geopotential height often shows a large trough, the trough axis coincident with the highest values of PV. However, the PV field gives a better overview of smaller scale features (see Additional Parameters Indicative Of The Diagnosis Of Cloudiness: Potential Vorticity
500 hPa geopotential height
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01 November 2001/06.00 UTC - Meteosat WV image; red: potential vorticity 318K, blue: geopotential height
500 hPa
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500 hPa geopotential height
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18 October 2001/12.00 UTC - Meteosat WV image; red: potential vorticity 333K
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19 September 2001/12.00 UTC - Meteosat WV image; red: potential vorticity 333K
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