- ICAO Standard Atmosphere
The International Civil Aviation Organization (ICAO) Standard Atmosphere gives the average values for meteorological element at 40°N from mean sea level (MSL) to 80km (262,500 ft).
The ICAO Standard Atmosphere does not contain water vapour
Some of the values defined by ICAO are:
As this is a Standard, you will never encounter these conditions outside of a laboratory, but many Aviation standards and flying rules are based on this, altimetry being a major one. The standard is very useful in Meteorology for comparing actual values to.
ee also
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International Standard Atmosphere External links
* [http://www.aviation.ch/tools-atmosphere.asp ICAO atmosphere calculator]
* [http://www.icao.int/cgi/goto_m_anb.pl?icao/en/anb/mais/index.html ICAO Standards]ources
* [http://www.aeromech.usyd.edu.au/aero/atmos/atmtab.html ICAO Standard Atmosphere Table]
* [http://mtp.jpl.nasa.gov/notes/altitude/ReferenceAtmospheres.html NASA JPL Reference Notes]References
* ICAO, "Manual of the ICAO Standard Atmosphere (extended to 80 kilometres (262 500 feet))", Doc 7488-CD, Third Edition, 1993, ISBN 92-9194-004-6.
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