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