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GEISA 2011 format for absorption cross-sections


1.Header :

The nine first lines of each file define the header describing data parameters.




Parameter Molecule Temp Pressure Resol Ref Nbline WnMin WnMax
Field length 10 7 10 6 6 7 11 11
Fortran descriptor (values) A10 F6.2 F9.2 F5.2 A5 I6 F10.4 F10.4
Undefined values     -99999.99 -9.99        


2.Data format :

For a given molecular species, each file describe absorption cross-section data corresponding to :
  - a given temperature in K,
  - a given pressure in Pa (which could be unknown),
  - a given resolution in cm-1 or nm (which could be unknown),
  - some references.
In the spectral range WnMin – NnMax (cm-1).

A compressed cross-section file is named “xxxx_rrrr_[yyyy]_tttt_pppp.asc.gz” where :
  - xxxx represent the name of the molecule,
  - rrrr the resolution,
  - yyyy the reference(s),
  - tttt the temperature,
  - pppp the pressure.
Example of a file name : cfc-14_00.01_[19]_216.00_005012.93.asc.gz


Parameter Wavenumber (cm-1) Absorption cross-section (cm2 mol-1)
Field length 13 11
Fortran descriptor F13.6 1PE11.3