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The GEISA 2015 sub-database on line transition parameters
GEISA 2015 format for line transition parameters


 

Illustration of the format used for the line transition parameters archive in the 2015 edition of GEISA :

The format of each entry is described in the following Table 1.
Each entry is a 252 character record to describe the 31 spectroscopic line parameters.
First line of Table 1: the 31 Spectroscopic line parameters are listed in the 31 columns and their description is given below.
Line 2 and line 3 display the field length and the FORTAN format descriptor, respectively.
Line 4 displays the standard default values associated to each parameter.
Line 5 displays a cumulative index indicating the position of the last character of the record associated to each of the 31 spectroscopic line parameters.
The standard default values for fields «O’», « T » and « T’ », have been set to “zero”. These modifications, since the GEISA-2011 edition, were made to avoid potential misunderstanding and thus improper use of these parameters in some applications especially related to forward radiative transfer.

It has to be noted that:
- Fields K and L (high-lightened in grey) are HITRAN specific for the users’ easier possible interface between the two databases.
- Value in field M is given only if directly provided by the author of the spectroscopic line entry.


Table -1-

Parameter A B C D E1 E2 E3 E4 F G I J
Field length 12 11 6 10 25 25 15 15 4 3 3 3
Fortran descriptor F12.6 1PD11.4 0PF6.4 F10.4 A25 A25 A15 A15 F4.2 I3 I3 A3
Undefined values -0.999999 -9.9999D-01 -.9999 -0.9999 * * * * -.99 -99 -99 *
Record counting 12 23 29 39 64 89 104 119 123 126 129 132

 
K L M N O R A' B' C' F'
2 1 10 7 9 6 10 11 6 4
I2 I1 1PE10.3 0PF7.4 F9.6 F6.4 F10.6 1PD11.4 0PF6.4 F4.2
-9 0 -9.999E-01 -9.9999 0.000000 -.9999 -0.999999 -9.9999D-01 -.9999 -.99
134 135 145 152 161 167 177 188 194 198

 
O' R' N' S S' T T' U U'
9 6 7 4 4 8 8 4 4
F9.6 F6.4 F7.4 F4.2 F4.2 F8.6 F8.6 F4.2 F4.2
0.000000 -.9999 -9.9999 -.99 -.99 0.000000 0.000000 -.99 -.99
207 213 220 224 228 236 244 248 252

A : wavenumber (cm-1) of the line
B : intensity of the line in (cm-1/(molecule.cm-2) at 296K
C : Air broadening pressure halfwidth (HWHM) (cm-1atm-1) at 296K
D : Energy of the lower transition level (cm-1)
Ei (i=1,2,3,4) : Transition quantum identifications for the lower and upper state of the transition
    E1 : upper state vibrational identification  E2 : lower state vibrational identification
    E3 : upper state rotationnal identification  E4 : lower state rotationnal identification
F : temperature dependence coefficient n of the air broadening halfwidth
G : identification code for isotopologue as in GEISA
I : identification code for molecule as in GEISA
J : Internal GEISA code for the data identification
K : Molecule number as in HITRAN
L : isotopologue number (1=most abundant, 2= second...etc) as in HITRAN
M : Einstein A-coefficient
N : self broadening pressure halfwidth (HWHMself) (cm-1atm-1) at 296K
O : air pressure shift of the line transition (cm-1atm-1) at 296K
R : temperature dependence coefficient of the air pressure shift
A' : estimated accuracy (cm-1) on the line position
B' : estimated accuracy on the intensity of the line in (cm-1/(molecule.cm-2)
C' : estimated accuracy on the air collision halfwidth (HWHM) (cm-1atm-1)
F' : estimated accuracy on the temperature dependence coefficient of the air broadening halfwidth
O' : estimated accuracy on the air pressure shift of the line transition (cm-1atm-1) at 296K
R' : estimated accuracy on the temperature dependence coefficient of the air pressure shift
N' : estimated accuracy on the self broadened (HWHM) (cm-1atm-1) at 296K
S : temperature dependence coefficient of the self broadening halfwidth
S' : estimated accuracy on the temperature dependence coefficient of the self broadening halfwidth
T : self pressure shift of the line transition (cm-1atm-1) at 296K
T' : estimated accuracy on the self pressure shift of the line transition (cm-1atm-1) at 296K
U : temperature dependence coefficient of the self pressure shift
U' : estimated accuracy on the temperature dependence coefficient of the self pressure shift



Data reader

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Identification of vibrational quantum number implementations in fields E1 and E2:

See Overall description of available vibrational transitions for quantum number identification digits in the E1 and E2 fields of the format (positions illustrated by character *) and specific of each molecule (ordered in the GEISA internal molecule numbering). The illustrations correspond to the possible maximum number of digits, for a given transition.

Those descriptions are intended to facilitate the use of the Transition Analysis option in the “database access” section.