[gradsusr] Algorithm for CAT calculation

[Andre Costa]

Dear users,
Does Anybody have an algorithm to calculate clear air turbulence (CAT) in
GrADS, like these variables???

CATaveprs   6,100  0,19,22,0 ** (400 350 300 250 200 150) Clear Air
Turbulence (CAT) [%]
CATmaxprs   6,100  0,19,22,2 ** (400 350 300 250 200 150) Clear Air
Turbulence (CAT) [%]
CBHEclm   0,10,0   0,6,25 ** entire atmosphere Horizontal Extent of
Cumulonimbus (CB) [%]
CTPaveprs   6,100  0,19,21,0 ** (700 600 500 400 300) In-Cloud Turbulence[%]
CTPmaxprs   6,100  0,19,21,2 ** (700 600 500 400 300) In-Cloud Turbulence[%]
ICAHTcbb   0,11,0   0,3,3 ** cumulonimbus base ICAO Standard Atmosphere
Reference Height [m]
ICAHTcbt   0,12,0   0,3,3 ** cumulonimbus top ICAO Standard Atmosphere
Reference Height [m]
ICIPaveprs   6,100  0,19,20,0 ** (800 700 600 500 400 300) Icing [%]
ICIPmaxprs   6,100  0,19,20,2 ** (800 700 600 500 400 300) Icing [%]

Regards.
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