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Updates to Current HITRAN2008(v13.0) Data
Sources
Sources for
HITRAN data
    Hydrogen Halides
Update for Hydrogen Halide
line parameters
Chlorine monoxide
Update for ClO
line parameters
Cyanoacetylene
New line parameters for
HC3N (cyanoacetylene)
Organic Aerosols
Indices of refraction for organic acids
related to tropospheric aerosols
Bromine nitrate
New IR Cross-sections
for BrONO2 (bromine nitrate)
Ozone
Update of Ozone parameters
PAN
Update of IR Cross-sections
for PAN (peroxyacetyl nitrate)
Carbon monosulfide
New line parameters for CS
(Carbon monosulfide)
Acetonitrile
Additional IR Cross-sections
for CH3CN
(Methylcyanide)
R-142b
Update of IR Cross-sections
for CH3CClF2 (HCFC-142b)
Q(T)
Expanded program for calculating
Total Internal Partition Sums
(TIPS)
R-141b
Corrected IR Cross-sections
for CH3CCl2F (HCFC-141b)
UV Formaldehyde
Revised UV Cross-sections
for H2CO (Formaldehyde)
Acetylene
Update for C2H2
line parameters
Acetaldehyde
New IR Cross-sections
for CH3CHO
(Acetaldehyde)
Acetone
New IR Cross-sections
for CH3COCH3
Propanone (Acetone)
Ethane
New IR Cross-sections
for C2H6 (Ethane)
Propane
New IR Cross-sections
for C3H8 (Propane)
Methyl chloride
Update for CH3Cl
line parameters
HITRAN on the internet
Internet information
system for HITRAN
Sulfur dioxide
Update for SO2
line parameters
Oxygen
Update for O2
line parameters
Ethane
Update for C2H6
line parameters
Carbonyl sulfide
Update for OCS
line parameters
Water vapor
Update for H2O
line parameters

****************** December, 2012
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 compilation.

The reference document can be downloaded here ( HITRAN References ) or
from the HITRAN ftp site.

****************** December, 2012
Update for HF, HCl, HBr, HI
(Hydrogen Halides)
   A comprehensive update of the hydrogen halide (HF (14), HCl (15), HBr (16), HI (17)) line parameters has been performed. The update also includes adding the deuterated isotopologues of the hydrogen halides for the first time.
   Note that the Dicke narrowing parameter has been introduced for some lines (the Galatry profile is assumed). We have provided two auxilliary files here that contain these parameters. The files are for HF and HCl; they are in the form of columnar tables with a repetition of the molecule number, isotopologue number, and unique quantum identification of each corresponding transition. The values given are the standard Lorentz half width followed by the narrowing parameter when available.
Details of the updates can be found in the linked pdf file
pdf Hydrogen-Halides Update

The new data can be downloaded here either in ASCII:
   14_hit12.par
      14_hit12_Galatry.txt
   15_hit12.par
      15_hit12_Galatry.txt
   16_hit12.par
   17_hit12.par
or compressed format:
   14_hit12.zip
      14_hit12_Galatry.zip
   15_hit12.zip
      15_hit12_Galatry.zip
   16_hit12.zip
   17_hit12.zip
The “.par” files should be used as a complete replacement of the 2008 hydrogen-halide linelist.

****************** September, 2012
Update for ClO (Chlorine monoxide)
  The intensities of the fundamental band of chlorine monoxide (ClO) have been updated, based on the work of M. Birk and G. Wagner, “Experimental line strengths of the ClO fundamental,” J. Geophys. Res. 102, 19199-206 (1997). Basically, the total band intensity has decreased and there is a more refined expression for the vibration-rotation interaction.
  In addition, the air-broadened half widths and their temperature dependence in the fundamental band were changed using the same method that was applied in HITRAN2008 to the pure rotational band. A rough estimate for the self-broadening half width (0.1 cm-1/atm) was assigned to all ClO lines in the database.

The new data can be downloaded here either in ASCII:   18_hit12.par
or compressed format:   18_hit12.zip
These files should be used as a complete replacement of the 2008 chlorine monoxide linelist.

****************** August, 2012
New molecule for HITRAN:
HC3N (Cyanoacetylene)
Cyanoacetylene (HC3N) is a new addition to the HITRAN database. The line list contains bands in the microwave region with transitions with Δv = 0 in the ground, v6 = 1, and v7 = 1 states. The spectral regions of the v5 (460 - 550 cm-1) and v6 (620 - 750 cm-1) fundamental bands are also included. In addition, the line list contains some of the hot bands.
A brief description of the sources of the data and nuances of the formatting can be found in the linked document here pdf HC3N sources

The new data can be downloaded here either in ASCII:   44_hit12.par
or compressed format:   44_hit12.zip
It should be noted that the molecule number designation for this new addition to HITRAN is 44.

****************** May, 2012
New Indices of Refraction of organic acids
related to tropospheric aerosols
  Twenty-one new files of aerosol data are now available in the HITRAN compilation. These files include the real and imaginary parts of the complex indices of oxalic, malonic, succinic, glutaric, pyruvic, benzoic, pinonic, and phthalic acid at various concentrations are tabulated for 276 to 1100 nm. Non-organic water and ammonium sulfate indices are also included in the measurement set for laboratory inter-comparison purposes.
  The source of these data is C.E. Lund Myhre and C.J. Nielsen, “Optical properties in the UV and visible spectral region of organic acids relevant to tropospheric aerosols,” Atmospheric Chemistry & Physics 4, 1759-1769 (2004).

The new data can be downloaded here in compressed format:   organic_aerosols.zip
A small Readme file describing the 21 data tables is available here: pdf new aerosol description

Note that, in addition to the aerosol indices of refraction that have been previously archived in the HITRAN compilation under the folder Aerosols, there was an update in 2009 that includes:
(1) real and imaginary indices of supercooled water at 238, 252, 258, and 269 K from 1101 to 4503 cm-1 (R. Wagner, et al, “Mid-Infrared Extinction Spectra and Optical Constants of Supercooled Water Droplets,” J.Phys.Chem. 109, 7099-7112 (2005));
(2) Real and imaginary indices of H2SO4/H2O droplets at 0.81, 0.81, 0.81, 0.76, 0.76 weight percent H2SO4 at 298, 273, 267, 298, 273 K from 1.3 to 25 µm (C.E. Lund Myhre, et al, “Spectroscopic Study of Aqueous H2SO4 at Different Temperatures and Compositions: Variations in Dissociation and Optical Properties,” J.Phys.Chem. 107, 1979-1991 (2005));
(3) Real and imaginary indices of binary HNO3/H2O at 223, 233, 243, 253, 273 and 293 K from 450 to 6500 cm-1 30% HNO3, 70% H2O from 1.5 to 22 µm (C.E. Lund Myhre, et al, “Optical Constants of HNO3/H2O and H2SO4/HNO3/H2O at Low Temperatures in the Infrared Region,” J.Phys.Chem. 109, 7166-7171 (2005)); and
(4) Real and imaginary indices of ternary droplets at 203, 213, 223, 253, 273 and 293 K from 450 to 6500 cm-1 23% HNO3, 21% H2SO4, 56% H2O from 1.5 to 22 µ:m (C.E. Lund Myhre, et al, “Optical Constants of HNO3/H2O and H2SO4/HNO3/H2O at Low Temperatures in the Infrared Region,” J.Phys.Chem. 109, 7166-7171 (2005)).

****************** February, 2012
New IR Cross-sections
for BrONO2 (bromine nitrate)
IR absorption cross sections for BrONO2 are now introduced into HITRAN. The cross-sections are given at 218K and 296K. The latter set is based on laboratory measurements, whereas the set for 218K was obtained by scaling the 296 K experimental data. The values are explained in more detail in the paper about the atmospheric detection of BrONO2 by the MIPAS instrument (M. Höpfner, J. Orphal, T. von Clarmann, G. Stiller, and H. Fischer, “Stratospheric BrONO2 observed by MIPAS,” Atmospheric Chemistry & Physics 9, 1735-1746 (2009)).

The new data can be downloaded here either in ASCII:   BrONO2_IR12.xsc
or compressed format:   BrONO2_IR12.zip
The original data files can be downloaded in compressed format:   BrONO2_IR12_alt.zip

****************** February, 2012
Update for Ozone
    The major advance in this new update is the inclusion of:
  • 10947 transitions of 22 new bands between 5815 and 7000 cm-1.
    Note that ozone lines in HITRAN2008 did not extend beyond 5787 cm-1.
  • 1234 lines of two bands ( 114-000 and 105I-000 ) between 5440 and 5790 cm-1.
    These updates became possible due to work of researchers at the University of Grenoble, the University of Reims, and the Institute of Atmospheric Optics in Tomsk.
It was also discovered that in HITRAN2008 a few lines that shared exactly the same wavenumber values had their intensities mistakenly interchanged. This error has now been fixed. We thank Geoff Toon (JPL) for pointing this out.

The new data can be downloaded here either in ASCII:   03_hit12.par
or compressed format:   03_hit12.zip
These files should be used as a complete replacement of the 2008 ozone linelist.

****************** September, 2011
Update to IR Absorption Cross-sections of PAN (peroxyacetyl nitrate)
New IR absorption cross-sections for PAN (peroxyacetyl nitrate) have been adapted from G. Allen, J.J. Remedios, D.A. Newnham, K.M Smith, and P.S. Monks, “Improved mid-infrared cross-sections for peroxyacetyl nitrate (PAN) vapour,” Atmos.Chem.Phys. 5, 47-56 (2005) and G. Allen, J.J. Remedios, and K.M Smith, “Low temperature mid-infrared cross-sections for peroxyacetyl nitrate (PAN) vapour,” Atmos.Chem.Phys. 5, 3153-3158 (2005).
These data cover two ranges: 560 to 1400 cm-1 and 1600 to 2200 cm-1 for 250 and 295K, and only the first spectral region for 273K. Note that J.J. Harrison (University of York, UK) fixed the baseline and renormalized the cross sections in the original references for the first spectral region; therefore the data in HITRAN differ slightly from those in the above references.
These new data should be used to replace the current PAN cross-sections in HITRAN2008.

The new data can be downloaded here either in ASCII:   PAN_IR11.xsc
or compressed format:   PAN_IR11.zip

****************** July, 2011
New molecule for HITRAN:
CS (Carbon monosulfide)
Carbon monosulfide is a new addition to the HITRAN database. Data for four isotopologues are now included in the HITRAN database in the microwave region (12C32S, 12C33S, 12C34S, 13C32), while infrared data is provided only for the first two isotopologues. A brief description of the sources of the data and the procedure used in generating a HITRAN line list can be found in the linked document here pdf CS creation

The new data can be downloaded here either in ASCII:   46_hit11.par
or compressed format:   46_hit11.zip
It should be noted that the molecule number designation for this new addition to HITRAN is 46.

****************** July, 2011
New IR Absorption Cross-sections of CH3CN (Methylcyanide)
Additional pressure-temperature sets of IR cross-sections of CH3CN have been added to HITRAN. These data, in the 3-µm region, come from the recent work of N.D.C. Allen, J.J. Harrison, and P.F. Bernath, JQSRT 112, 1961-1966 (2011).

The new data are quite substantial. They have been combined with the previous CH3CN data in HITRAN and can be downloaded here in compressed format:   CH3CN_IR11.zip
The new experimental two-column data files can be downloaded in compressed format:   CH3CN_IR11_alt.zip

****************** July, 2011
Update to IR Absorption Cross-sections of CH3CClF2 (HCFC-142b)
New temperature-dependent absorption cross-sections of HCFC-142b have been added to the HITRAN compilation. The data cover the 650-1500 cm-1 spectral region, and come from the work of K. Le Bris and K. Strong, JQSRT 111, 364-371 (2010). These data should replace the sets of HCFC-142b IR cross-sections that were previously in HITRAN.

The new data can be downloaded here either in ASCII:   HCFC-142b_IR11.xsc
or compressed format:   HCFC-142b_IR11.zip
The original experimental data files can be downloaded in compressed format:   HCFC-142b_IR11_alt.zip

****************** July, 2011
New program to calculate
Total Internal Partition Sums
The FORTRAN program, TIPS, that calculates the partition sums for the HITRAN molecules and associated isotopologues has been expanded to take into account the new species introduced into the most recent HITRAN database. In addition, partition sums have been calculated for some molecules of astrophysical interest that we anticipate will be added to the database. The program, TIPS_2011.for, can be used to rapidly generate the partition sums at any temperature in the range 70-3000K. More detailed information can be found in A.L. Laraia, R.R. Gamache, J. Lamouroux, I.E. Gordon, and L.S. Rothman, Icarus 215, 391-400 (2011).

A link to the programs, TIPS_2011.zip, can be made by clicking here:   TIPS
The suite of Fortran programs and associated utilities then becomes available upon decompression.

****************** July, 2011
Correction to IR Absorption Cross-sections of CH3CCl2F (HCFC-141b)
HITRAN infrared cross-sections for HCFC-141b originate from C. Clerbaux, R. Colin, P.C. Simon, and C. Granier, “Infrared Cross Sections and Global Warming Potentials of 10 Alternative Hydrohalocarbons,” J.Geophys.Res. 98, 10491-10497 (1993). It was found recently that the set of cross-sections in the 1325-1470 cm-1 region at 270 K differed from the ones in the original publication. The reason for this discrepancy is unclear. The HITRAN cross-sections in this pressure-temperature set have now been multiplied by 1.75 to bring them into consistency with the original publication. We thank G.C. Toon for discovering this discrepancy.

The corrected data can be downloaded here either in ASCII:   HCFC-141b_IR11.xsc
or compressed format:   HCFC-141b_IR11.zip
These files should be used as a complete replacement of the 2008 HCFC-141b IR cross-sections.

****************** July, 2011
UV Absorption Cross-sections for H2CO (formaldehyde)
A study of the previous ultraviolet absorption cross sections for formaldehyde in HITRAN was carried out as recommended by the HITRAN Advisory Committee. The cross sections introduced here have been derived from two existing sets, one using a Fourier transform spectrometer, and one using a grating instrument. The new re-scaled data are based on the work of K. Chance and J. Orphal, “Revised ultraviolet absorption cross sections of H2CO for the HITRAN database,” JQSRT 112, 1509-1510 (2011).

The new data can be downloaded here either in ASCII:   H2CO_UV11.xsc
or compressed format:   H2CO_UV11.zip

****************** April, 2011
Update for C2H2 (Acetylene)
An assortment of updates has been performed at this time for acetylene:
  The vibrational assignment of the line at 735.54341 cm-1 was corrected. Also, quantum assignments were corrected for the 23 Q-branch lines of the 3v4+v5v4 band at 1950 cm-1. We thank Geronimo Villanueva (NASA Goddard Space Flight Center) for pointing out these errors.
  The 7.7-µm region has been completely updated based on the following papers: L. Gomez, D. Jacquemart, N. Lacome, and J.-Y. Mandin, “Line intensities of 12C2H2 in the 7.7 µm spectral region,” JQSRT 110, 2102-2114 (2009); and L. Gomez, D. Jacquemart, N. Lacome, and J.-Y. Mandin, “New line intensity measurements for 12C2H2 around 7.7 µm and HITRAN format line list for applications,” JQSRT 111, 2256-2264 (2010).
  In addition, the line positions of most of the v1+v3 band of the principal isotopologue were updated using the International Committee for Weights and Measures recommended values (http://www.bipm.org/utils/common/pdf/mep/M-e-P_C2H2_1.54.pdf) and K. Nakagawa, M. de Labachelerie, Y. Awaji, and M. Kourogi, “Accurate optical frequency atlas of the 1.5-µm bands of acetylene,” J.Opt.Soc.Am. 13, 2708-2714 (1996).
  Finally, the C2HD isotopologue has been introduced into HITRAN for the first time, with microwave values originating from the Cologne Database for Molecular Spectroscopy (CDMS) catalogue, while parameters in the 416-789 cm-1 region were taken from A. Jolly, Y. Benilan, E. Cané, L. Fusina, F. Tamassia, A. Fayt, S. Robert, and M. Herman, “Measured integrated band intensities and simulated line-by-line spectra for C2HD between 25 and 2.5 µm, and new global vibration rotation parameters for the bending vibrations,” JQSRT 109, 2846-2856 (2008).

The new data can be downloaded here either in ASCII:   26_hit11.par
or compressed format:   26_hit11.zip
These files should be used as a complete replacement of the 2008 acetylene linelist.

****************** February, 2011
Absorption Cross-sections for
CH3CHO (Acetaldehyde)
Infrared absorption cross sections for acetaldehyde have been introduced for the first time into HITRAN. The data cover the 3µm region and are based on the work of K.A. Tereszchuk and P.F. Bernath, JQSRT 112, 990-993 (2011). The spectra were taken at a number of temperatures and pressures appropriate for atmospheric conditions. In addition to the ".xsc" file in the HITRAN format, we provide the original files in a two-column format (CH3CHO_IR11_alt.zip, only in compressed format). Note that these data files are quite large.

The new data can be downloaded here either in ASCII:   CH3CHO_IR11.xsc
or compressed format:   CH3CHO_IR11.zip
The original two-column data files can be downloaded in compressed format:   CH3CHO_IR11_alt.zip

****************** January, 2011
Absorption Cross-sections for
CH3COCH3
(Acetone)
Infrared absorption cross sections for propanone (acetone) have been introduced for the first time into HITRAN. The data cover the 3µm and mid-infrared regions and are based on the works of J.J. Harrison et al, JQSRT 112, 53-58 (2011) and JQSRT 112, 457-464 (2011). The spectra were taken at a number of temperatures and pressures appropriate for atmospheric conditions. In addition to the ".xsc" file in the HITRAN format, we provide the original files in a two-column format (CH3COCH3_IR11_alt.zip, only in compressed format).

The new data can be downloaded here either in ASCII:   CH3COCH3_IR11.xsc
or compressed format:   CH3COCH3_IR11.zip
The original two-column data files can be downloaded in compressed format:   CH3COCH3_IR11_alt.zip

****************** November, 2010
Absorption Cross-sections for C2H6 (Ethane)
Infrared absorption cross sections for ethane around 3 µm have been added to the cross-section part of the HITRAN compilation. The data are based on the work of J.J. Harrison, N.D.C. Allen, and P.F. Bernath, “Infrared absorption cross sections for ethane (C2H6) in the 3 µm region,” JQSRT 111, 1282-1288 (2010). There are 14 sets of air-broadened spectra taken at different combinations of temperatures and pressures. In addition to the ".xsc" file in the HITRAN format, we provide the original files in a two-column format (C2H6_IR10_alt.zip, only in compressed format).
There are, of course, ethane line-by-line parameters as well in HITRAN.

The new cross-section data can be downloaded here either in ASCII:   C2H6_IR10.xsc
or compressed format:   C2H6_IR10.zip
The original two-column data files can be downloaded in compressed format:   C2H6_IR10_alt.zip

****************** November, 2010
Absorption Cross-sections for C3H8 (Propane)
Infrared absorption cross sections for propane have been introduced for the first time into HITRAN. The data around 3µm are based on J.J. Harrison and P.F. Bernath, “Infrared absorption cross sections for propane (C3H8) in the 3 µm region,” JQSRT 111, 1282-1288 (2010). There are 12 sets of spectra taken at different combinations of temperature and pressure. In addition to the ".xsc" file in the HITRAN format, we provide the original files in a two-column format (C3H8_IR10_alt.zip, only in compressed format).

The new data can be downloaded here either in ASCII:   C3H8_IR10.xsc
or compressed format:   C3H8_IR10.zip
The original two-column data files can be downloaded in compressed format:   C3H8_IR10_alt.zip

****************** October, 2010
Update for CH3Cl (Methyl chloride)
The HITRAN2008 intensities in the 640-2600 cm-1 region that originate from A. Nikitin, J.-P. Champion, and H. Burger, “Global analysis of 12CH335Cl and 12CH337Cl: simultaneous fit of the lower five polyads (0-2600 cm-1),” J.Mol.Spectrosc. 230, 174-184 (2005) were rescaled to match existing experimental data. In addition, the most recent line list from the JPL catalogue was incorporated. Finally, the representation of the rotational quanta has been changed to accommodate not just magnitude but also the sign of the l-quantum number, which is now given for all transitions of CH3Cl. Note that the 3-micrometer region is still in need of a significant update.

The new data can be downloaded here either in ASCII:   24_hit10.par
or compressed format:   24_hit10.zip
These files should be used as a complete replacement of the 2008 methyl chloride linelist.

****************** August, 2010
Internet system for
working with HITRAN data
An internet information system is under development at the V.E. Zuev Insitute of Atmosperic Optics, Tomsk, Russia in collaboration with the Harvard-Smithsonian Center for Astrophysics. This system allows the user to perform numerous functions on the HITRAN database, including:
  • Survey the HITRAN database content for a specified spectral range
  • Specify a mixture of vibrational bands for a given HITRAN isotopologue for a selected wavenumber region
  • Specify a gas mixture from a set of built-in standard atmospheric concentration profiles for a selected wavenumber region
  • Visualize a stick intensity diagram of the specified mixture
  • Simulate one of built-in spectral functions (absorption coefficient profile, transmittance, absorption, or radiance) of the mixture spectrum convolved with one of built-in apparatus functions for various physical (temperature, pressure, pathlength) and simulation (intensity cutoff, contour shape, wing length, resolution, etc) conditions
  • Download simulation results in text format on user's computer or send them via e-mail
  • Obtain the abstracts of the original sources of HITRAN data

HITRAN on the web can be accessed at the URL: http://hitran.iao.ru

****************** December, 2009
Update for SO2 (Sulfur dioxide)
Several bands of 34SO2 (second isotopologue by abundance in HITRAN) have been added in the 4 and 7.2-10 µm regions based on work published in the following papers: J.-M. Flaud, W.J. Lafferty, and R.L. Sams, “Line Intensities for the ν1, ν3 and ν1 + ν3 bands of 34SO2JQSRT 110, 669-674 (2009); W.J. Lafferty, J.-M. Flaud, R.L. Sams, E.H. Abib Ngom, “High resolution analysis of the rotational levels of the (0 0 0), (0 1 0), (1 0 0), (0 0 1), (0 2 0), (1 1 0) and (0 1 1) vibrational states of 34SO2,” J.Mol.Spectrosc. 252, 72-76 (2008); W.J. Lafferty, J.-M. Flaud, E.H.A. Ngom, and R.L. Sams, “34SO2: High-resolution analysis of the (0 3 0), (1 0 1), (1 1 1), (0 0 2) and (2 0 1) vibrational states; determination of equilibrium rotational constants for sulfur dioxide and anharmonic vibrational constants,” J.Mol.Spectrosc. 253, 51-54 (2009). All the previous data that existed for 34SO2 in HITRAN2008 have been replaced.
  In addition, pure-rotational transitions (with J < 100) in the ground and v2 states of 32SO2 and in the ground state of 34SO2 were adopted from the Cologne Database for Molecular Spectroscopy.

The new data can be downloaded here either in ASCII:   09_hit09.par
or compressed format:   09_hit09.zip
These files should be used as a complete replacement of the 2008 sulfur dioxide linelist.

****************** November, 2009
Update for O2 (Oxygen)
The band of oxygen at 1.27 µm has been updated using new intensities calculated by Prof. A. Orr-Ewing and new line-shape parameters that are explained in Washenfelder et al, “Carbon dioxide column abundances at the Wisconsin Tall Tower site,” J.Geophys.Res. 111, D22305 (2006). We thank G.C. Toon of JPL for providing this line list. Two lines (at 7883.626 and 7885.778 cm-1) of the 16O18O isotopologue that were missing from previous editions of HITRAN and from the this latter list have now been added.
  In addition, the intensities of the 1Δ(v=0) –3Σ(v=1) band were scaled based on the recent results reported in Kassi et al, “Very high sensitivity CW-cavity ring down spectroscopy: Application to the a1Δg(0) – X3Σg-(1) O2 band near 1.58 µm,” Chem.Phys.Lett. 409, 281-287 (2005).
  Finally, the intensity of the line at 7.803602 cm-1 in the pure rotational band of the isotopologue 16O18O was found to be erroneous by about a factor of 4 (we thank S. Paine of SAO for finding this error). The intensity of this line is now corrected adapting the value from the JPL catalogue.

The new data can be downloaded here either in ASCII:   07_hit09.par
or compressed format:   07_hit09.zip
These files should be used as a complete replacement of the 2008 oxygen linelist.

****************** September, 2009
Update for C2H6 (Ethane)
The symmetry labeling of some of the ethane lines in the official HITRAN2008 release were found to be erroneous. This situation has now been fixed.
In addition, the 13C12CH6 isotopologue had not been added to the official release of HITRAN2008 despite the text in the HITRAN paper. This new isotopologue has now been included.

The data can be downloaded here either in ASCII:   27_hit09.par
or compressed format:   27_hit09.zip
These files should be used as a complete replacement of the 2008 ethane linelist.

****************** July, 2009
Update for OCS (Carbonyl sulfide)
It was found that due to a programming error some of the air- and self-broadening halfwidths for all isotopologues of OCS were in error by as much as 50%. It was also found in the process that there is a typo in the b3 coefficient for the O2-broadening Padé approximant given in M.A. Koshelev and M.Y. Tretyakov, “Collisional broadening and shifting of OCS rotational spectrum lines,” JQSRT 110, 118-128 (2009). This b3 coefficient needs to be divided by 10. These mistakes have now been fixed, yielding much improved broadening parameters. We thank Maxim Koshelev from the Institute of Applied Physics (Nizhny Novgorod, Russia) for pointing out these errors.

While performing this correction, the line positions and intensities in the pure rotational band for all of the HITRAN OCS isotopologues were updated using parameters from the Cologne Database for Molecular Spectroscopy (CDMS). The intensities were converted using the procedure described in the appendix of the HITRAN2008 paper, which includes scaling of the partition functions.

The data can be downloaded here either in ASCII:   19_hit09.par
or compressed format:   19_hit09.zip
These files should be used as a complete replacement of the 2008 carbonyl sulfide linelist.

****************** June, 2009
Update for H2O (Water vapor)
An error was discovered in the transcription of the intensities of HDO line parameters above 11500 cm-1. They were a factor of 10 too large in the 2008 release of HITRAN, and have now been corrected here. Thanks to B.A. Voronin of the Institute of Atmospheric Optics, Tomsk Russia, for pointing this error out to us.

The data can be downloaded here either in ASCII:   01_hit09.par
or compressed format:   01_hit09.zip
These files should be used as a complete replacement of the 2008 water vapor linelist.