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DefinitionThe height of a given point in the atmosphere in units proportional to the potential energy of unit mass (geopotential) at this height relative to the sea level.
Validityinstantaneous 00Z
Comment 

 

A description of how to code re-forecasts in GRIB2 is available here

A description of how to code the data as S2S is available here

 

GRIB 2
Discipline= 0  
Parameter Category= 3  
Parameter Number= 5  
Type of first fixed surface= 100Type of second fixed surface= All 1's
Scale factor of first fixed surface= 0Scale factor of second fixed surface= All 1's
Scaled value of first fixed surface= value in PaScaled value of second fixed surface= All 1's
GRIB 2 and C-code for:  Perturbed forecast  Control forecast Perturbed re-forecast and Control re-forecast