Updates to Current HITRAN2012 Data
Update for 14N15N
nitrogen line parameters
Update for singly-deuterated
hydrogen (HD) line parameters
|Update for HITRAN References|
The sources for the 6 major parameters in the HITRAN database, as
well as for the cross-sections data, are contained in a pdf file.
This file is updated each time new or modified data are added to the
The reference document can be downloaded here (
|Update for 14N15N|
|Similar to the error found for the HD molecule mentioned below, the abundance of the 14N15N isotopologue was incorrectly calculated in the original release of HITRAN2012; it is now fixed in the molparam.txt file as well as in other relevant tables.|
|Update for Singly-deuterated Hydrogen (HD)|
It was discovered by J. Mendrok (Lulea University of
Technology, Kiruna, Sweden) that the abundance of the HD molecule was
incorrectly calculated in the original release of HITRAN2012; it is
now fixed in the molparam.txt file as well as in other relevant
tables. The implication was that the intensities of the electric
dipole transitions reported in the original 45_hit12.par file needed
to be multiplied by two, although it did not affect the Einstein-A
coefficients. The correction is reflected in the update file.|
In addition, a total number of 7195 electric quadrupole transitions of the HD molecule have been calculated and added to the HITRAN line list. The calculation was carried out using the energy levels from the work by K. Pachucki and J. Komasa, “Rovibrational levels of HD,” Phys.Chem.Chem.Phys. 12, 9188-9196 (2010) and the quadrupole moment function of L. Wolniewicz, I. Simbotin, and A. Dalgarno, “Quadrupole Transition Probabilities for the Excited Rovibrational States of H2,” Astrophys.J.Suppl.Ser. 115, 293-313 (1998).
For the purpose of validation, comparisons between the HITRAN database, Kurucz database, and the most recent experimental results have been performed for the H2 and HD transitions. The corresponding report, Comparison of Hydrogen Databases, provides more details on this effort.