Dear Martin, All,

Martin has made proposals for two new standard names:

1) barometric_altitude (m)

'Barometric altitude is the altitude determined by a pressure measurement which 
is converted to altitude through interpolation of the International Standard 
Atmosphere (ICAO, 1976).  A mean sea level pressure of 1013.25 hPa is used for 
the surface pressure.'

This name was supported by John Graybeal and Jonathan Gregory. No other 
comments have been received. This name is accepted for inclusion in the 
standard name table and will be added at the next update.

2) barometric_altitude_above_ground (m)

' Barometric altitude is the altitude determined by a pressure measurement 
which is converted to altitude through interpolation of the International 
Standard Atmosphere (ICAO, 1976).  The reference pressure is derived from the 
surface pressure measurement at take-off of the aircraft.'

This proposal is still under discussion, pending clarification of the 
definition.

Best wishes,
Alison

------
Alison Pamment                          Tel: +44 1235 778065
NCAS/British Atmospheric Data Centre    Email: [email protected]
STFC Rutherford Appleton Laboratory     
R25, 2.22
Harwell Oxford, Didcot, OX11 0QX, U.K. 
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