-----------------------------------------------------------------------------------------------------
aer_v_3.7
-----------------------------------------------------------------------------------------------------

September 2018

* O2 Line Parameters
  - UV O2 line parameters from the HITRAN 2012 file 07_UV06.par were added. 
    The Herzberg lines added span the range from 34014-41261 cm-1, and the
    Schumann-Runge lines added span the range from 44607-57028 cm-1. The
    original UV line parameter data were modified to change the foreign and
    self line widths of the Herzberg lines from 0.00 to a constant 0.07. 

-----------------------------------------------------------------------------------------------------
aer_v_3.6
-----------------------------------------------------------------------------------------------------

August 2017

* H2O Line Parameters

  - A baseline water vapor was established to reflect various databases in 
    different spectral domains:

      < 6000 cm-1: HITRAN 2012
      6000-7925:   HITRAN 2012 with Mikhailenko
      7925-9395:   HITRAN 2012 with Regalia
      9395-12000:  HITRAN 2012
      > 12000:     AER Version 3.3

    Additional modifications to line parameters were made to match TCCON 
    observations.

* CO2 Line Parameters
  - Weak- and strong-band CO2 line parameters as provided by OCO-2 ABSCO v5.0                                                                     
    tables were added. Weak band modifications span 5929-6392 cm-1, and                                                                           
    strong-band edits cover 4695-5019 cm-1                                                                                                        

* O2 Line Parameters
  - A-band O2 line parameters as provided by OCO-2 ABSCO v5.0 were added.                                                                            
    The modifications span 12847-13339 cm-1.                                                                                                          

-----------------------------------------------------------------------------------------------------
 aer_v_3.5
-----------------------------------------------------------------------------------------------------
November 2016

The following updates were made in aer_v_3.5:

* H2O Line Parameters

  - Between 240-510 cm-1, the air-broadened half-widths of 59 H20 lines were modified based on 
    the analysis of REFIR-PAD (Bianchini and Palchetti, 2008) measurements taken at Cerro Toco,
    Chile, as part of the RHUBC-II campaign and a re-analysis of the AERI-ER measurements
    (for > 400 cm-1) from the ARM NSA site (first analyzed in Delamere et al.(2010)).

  - Between 15-70 cm-1, the air-broadened half-widths of 16 H20 lines were modified based on
    the analysis of SAO FTS (Paine and Turner, 2013) measurements taken at Cerro Toco, 
    Chile, as part of the RHUBC-II campaign. 

* O2 Line Parameters

  -  The self- and air-broadened widths of the lines at 834 GHz, 1466 GHZ, and 1525 GHz 
     have been increased by 5% based on the analysis of SAO FTS (Paine and Turner, 2013)
     measurements taken at Cerro Toco, Chile, as part of the RHUBC-II campaign. 

     (publication in preparation - Mlawer et al., 2017)  

-----------------------------------------------------------------------------------------------------
 aer_v_3.4.1
-----------------------------------------------------------------------------------------------------
July 2016

The following updates were made in aer_v_3.4.1

* H2O line parameters were updated to follow HITRAN 2012 with the following exceptions:

  - H2O line intensities for 0.7417 cm-1 (22.233 GHz), 6.1145 cm-1 (183.3 GHz), 10.84 cm-1 (325 GHz) and 
    12.68  cm-1 (380 GHz) were replaced with the corresponding intensities from AER v3.4.

  - Between 0 and 630 cm-1, the air width, temperature dependence, and pressure shift parameters for 
    H2O lines were replaced with corresponding aer_v_3.4 values (see below). This includes the lines 
    from Payne et al. (2008) and Delamere et al. (2010).

* CO2 line parameters were also updated according to HITRAN 2012, and line coupling parameters were updated as 
  specified by Lamouroux et al. (2015) with the following exceptions:

   - The CO2 lines between 5970 cm-1 and 6400 cm-1 have been updated based on the 
     work of Devi et al., J. Mol. Spectrosc., 242, 90-117, 2007a and 
     Devi et al., J. Mol. Spectrosc., 245, 52-80, 2007b. 

   - First order line coupling coefficients for the 30012<-00001 and 30013<-00001 bands of 
     isotopologue 1 (bands 68<-1 and 71<-1 in the HITRAN 2000 formalisim) were calculated 
     from the tridiagonal relaxation matrix parameters of Devi et al., 2007a,b. 
     Line coupling was set to zero for other bands between 5970 cm-1 and 6400 cm-1
     to be consistent with the fits of Devi et al., 2007a,b which
     did not include line coupling for those bands.

-----------------------------------------------------------------------------------------------------
 aer_v_3.4
-----------------------------------------------------------------------------------------------------
February 2016

The current AER line parameter database aer_v_3.4 has been updated to follow HITRAN 2012 with 
the following exceptions and additions:

* H2O Line Parameters
  - The H2O parameters in aer_v_3.4 are the same as those in aer_v_3.3.

* CO2 Line Parameters
  - The CO2 parameters in aer_v_3.4 are the same as those in aer_v_3.3 and aer_v_3.2.

* CH4 line parametrs
  - The CH4 line parameters are updated to HITRAN 2012 with the addition of line coupling parameters 
    for the v3 (3000 cm-1) and v4 (1300 cm-1) bands of the main isotopologue. The line coupling parameters 
    were calculated using the HITRAN 2012 line parameters and the method of Tran et al., 2006. 

* * O2 Line Parameters
    - The O2 lines were updated to match HITRAN 2012 with the following exceptions:
          1. 60 GHz O2 lines and the 120 Ghz O2 line are from from Tretyakov et al. (2005), 
             as implemented in MonoRTM v4.2.                                                                   
          2. 0 cm-1 "Debye line" for O2 same as in MonoRTM v4.2 and aer_v_3.2, all other                                  
             O2 lines below 1.497951 cm-1 removed.                                                        
          3. The 53 'high J' lines in the 60 GHz band (25 for iso 1, 28 for iso 2) 
             that were present in HITRAN 2008 and aer_v_3.2 but were not included 
             in HITRAN 2012 were kept for aer_v_3.4.


-----------------------------------------------------------------------------------------------------
 aer_v_3.3.2
-----------------------------------------------------------------------------------------------------
April 2015

Updated CH4 line file to HITRAN 2012 with line coupling parameters for the v3 (3000 cm-1) and v4 (1300 cm-1) 
bands of the main isotopologue. The line coupling parameters were calculated using the HITRAN 2012 line 
parameters and the method of Tran et al., 2006. 

-----------------------------------------------------------------------------------------------------
 aer_v_3.3.1
-----------------------------------------------------------------------------------------------------
March 2015

Updated copyright statements for main line file aer_v_3.3.1.


-----------------------------------------------------------------------------------------------------
 aer_v_3.3
-----------------------------------------------------------------------------------------------------
January 2014

The current AER line parameter database aer_v_3.3 has been updated below 55 cm-1 to match the file 
  spectral_lines.dat.0_55.v5.0_fast released as part of MonoRTM v5.0. This includes the following 
  updates to aer_v_3.2:

* H2O Line Parameters
    - The lines below 55 cm-1 have been updated to match the file spectral_lines.dat.0_55.v5.0_fast 
      released as part of MonoRTM v5.0. This involved the following changes to the 
      H2O line files from aer_v_3.2:
          1. All lines below 55 cm-1 were updated to match HITRAN 2012.
          2. The intensities for the H2O lines at 0.7417 cm-1 
             (22.233 GHz), 6.1145 cm-1 (183.3 GHz), 10.84 cm-1 (325 GHz) 
             and 12.68 cm-1 (380 GHz) are based on the work of S. A. Clough (1973)
             and are the same as in aer_v_3.2.
          3. The air-broadened half-widths for the H2O lines at 0.7417 cm-1 
             (22.233 GHz) and 6.1145 cm-1 (183.3 GHz) were recalculated following
             the procedure of Payne et al. (2008) to be consistent with the new
             self-broadened half-widths from HITRAN 2008 and temperature dependences
             based on the upper end of the error bounds given by
             Birk and Wagner (2012), on the advice of Robert Gamache, U. Mass Lowell.

* O3 Line Parameters
    - The lines below 55 cm-1 were updated to match HITRAN 2012.

* CO Line Parameters
    - The lines below 55 cm-1 were updated to match HITRAN 2012.

* O2 Line Parameters
    - The lines below 55 cm-1 were updated to match HITRAN 2012 with the following exceptions:
          1. 60 GHz O2 lines and the 120 Ghz O2 line are from from Tretyakov et al. (2005), 
             as implemented in MonoRTM v4.2.                                                                   
          2. 0 cm-1 "Debye line" for O2 same as in MonoRTM v4.2 and aer_v_3.2, all other                                  
             O2 lines below 1.497951 cm-1 removed.                                                        
          3. The 53 'high J' lines in the 60 GHz band (25 for iso 1, 28 for iso 2) 
             that were present in HITRAN 2008 and aer_v_3.2 but were not included 
             in HITRAN 2012 were kept for aer_v_3.3.

-----------------------------------------------------------------------------------------------------
 aer_v_3.2
-----------------------------------------------------------------------------------------------------
October 2012
The current AER line parameter database aer_v_3.2 includes the following updates to aer_v_3.1.

*CO2 line parameters

   - The CO2 lines between 5970 cm-1 and 6400 cm-1 have been updated based on the 
     work of Devi et al., J. Mol. Spectrosc., 242, 90-117, 2007a and 
     Devi et al., J. Mol. Spectrosc., 245, 52-80, 2007b. 

   - First order line coupling coefficients for the 30012<-00001 and 30013<-00001 bands of 
     isotopologue 1 (bands 68<-1 and 71<-1 in the HITRAN 2000 formalisim) were calculated 
     from the tridiagonal relaxation matrix parameters of Devi et al., 2007a,b. 
     Line coupling was set to zero for other bands between 5970 cm-1 and 6400 cm-1
     to be consistent with the fits of Devi et al., 2007a,b which
     did not include line coupling for those bands.

*O2 line parameters

   - O2 line list updated using HITRAN update for O2 (Nov 2009). 
     This was a complete replacement of the 2008 O2 linelist. 
     See header of 07_O2 for more details.

   - The quadrupoles linelist from Iouli Gordon was merged into the above HITRAN file. 
     These are 69 new lines between 7571 cm^-1 and 8171 cm^-1 for the main isotopologue.
     These paramaters have been evaluated using TCCON spectra.

-----------------------------------------------------------------------------------------------------
 aer_v_3.1
-----------------------------------------------------------------------------------------------------
November 2011
The current AER line parameter database aer_v_3.1 includes the following updates to aer_v_3.0.

* CO2 line parameters

   - The positions and intesities of CO2 lines have been corrected in aer_v_3.1 
to match HITRAN 2008 outside the spectral range 597-2500 cm-1. The positions and 
intensities outside 597-2500 cm-1 in aer_v_3.0 were incorrectly taken from 
HITRAN 2004. Within 597-2500 cm-1, the positions and intensities are consistent 
with the Carbon Dioxide Spectral Database, maintained by S. Tashkun, Tomsk, as 
contained in aer_v_2.4, aer_v_3.0, and the hitran_mipas_pf3.2 line file 
(Flaud et al., 2003).
 
   - The first order line coupling parameters for CO2 in aer_v_3.1 have also been 
recalculated using the above positions and intensities and the CO2 line mixing 
database of Lamouroux et al., 2010, as described below for aer_v_3.0. Small changes 
were made to the Lamouroux code to maintain the sum rules when two lines in the same 
vibrational band are within 1.0e-4 cm-1 of each other. 

* SF6 and ClONO2 line parameters

   - These HITRAN 2008 line files are now included in aer_v_3.1. However, the 
line parameters for ClONO2 are not as complete as the cross section data, and 
so users are advised to use the cross-section data supplied with LBLRTM v12.1 
instead of the line parameter data for this molecule.

-----------------------------------------------------------------------------------------------------
 aer_v_3.0
-----------------------------------------------------------------------------------------------------
Jan. - March 2011

The current AER line parameter database aer_v_3.0 includes 39 molecules, and has been updated to adopt 
HITRAN 2008 line parameters with the exceptions noted below. Additional details are provided in the 
headers of each linefile by molecule and in the total linefile.

* H2O line parameters

   - The intensities for the lines at 0.7417 cm-1 (22.233 GHz), 6.1145 cm-1 (183.3 GHz), 10.84 cm-1 
(325 GHz) and 12.68 cm-1 (380 GHz) are based on the work of S. A. Clough (1973).
   
   - The air-broadened half-widths, self-broadened half-widths, temperature dependence of the widths, 
and the shifts for the lines at 0.7417 cm-1 (22.233 GHz), 6.1145 cm-1 (183.3 GHz), 10.84 cm-1 (325 GHz) 
and 12.68 cm-1 (380 GHz) are described in Payne et al. (2008) and Koshelev (2007).

   - Line positions and intensities for the wavenumber range 10 to 2500 cm-1 are from Coudert 
et al. (2008). This AER line file contains both measured and calculated Coudert et al values, 
while HITRAN 2008 includes measured values only, which stop at 1750 cm-1.

   - The air-broadened half-widths, temperature dependences, and pressure shifts 
from 350-667 cm-1 are described in Delamere et al. (2010).  

* CO2 line parameters 

   - CO2 line parameters were built using the CO2 line mixing database of Lamouroux et al., 
2010. This database takes most of its line positions, intensities, and lower state energies 
from the HITRAN 2008 database, but the values for air-broadened half-widths and their temperature 
dependencies are adjusted from the HITRAN 2008 values to be consistent throughout the bands, and the 
air-induced pressure shifts (not given for a majority of transitions in HITRAN 2008) were added. 

   - The CO2 line intensities and positions in the spectral range 597-2500 cm-1 are consistent 
with the Carbon Dioxide Spectral Database, maintained by S. Tashkun, Tomsk, as in aer_v_2.4 and 
as implemented in the hitran_mipas_pf3.2 line file (Flaud et al., 2003). 

   - First order line coupling coefficients for the first seven isotopologues of CO2 were 
recalculated using the above parameters and the method of Niro et al., 2005.

* CH4 line parameters 

   - CH4 line parameters now include line coupling parameters for the v3 (3000 cm-1) and v4 (1300 cm-1) 
bands of the main isotopologue. The line coupling parameters were calculated using the HITRAN 2008 line 
parameters and the method of Tran et al., 2006. 

* O2 line parameters

   - The line widths, the temperature dependence of the widths, and the line coupling parameters 
for the 2 cm-1 (60 GHz) band and the 3.96 cm-1 (120 GHz) line of O2 are those of 
Tretyakov et al., 2005. 

   - All oxygen lines above 0 cm-1  and below 1.49751 cm-1 have been removed from this file and 
replaced by a single line in the operation with a strength appropriate to the lines removed and a 
width reflecting the effects of line coupling. The lines removed are d604 and d601 lines.

-----------------------------------------------------------------------------------------------------
 aer_v_2.4
-----------------------------------------------------------------------------------------------------

Jan., 2010

Updated CO2 line intensities and positions in the range 597-2503cm-1 to be consistent with 
parameters from S. Tashkun, Institute of Atmospheric Optics, Tomsk, as implemented in the 
hitran_mipas_pf3.2 line file (Flaud et al., 2003, ESA TN-LPM-IFAC-02 and references therein.)     

-----------------------------------------------------------------------------------------------------
 aer_v_2.3
-----------------------------------------------------------------------------------------------------

Jan., 2010

Changes to water vapor(01_H2O)

Implemented improved water vapor temperature dependence and shifts provided by Bob Gamache 
H2O_350-2819.par. From 350 - 1600 cm^-1 the calculations are velocity
integral results and from 1600cm-1 and up they are from mrtv calculations.


-----------------------------------------------------------------------------------------------------
 aer_v_2.2
-----------------------------------------------------------------------------------------------------

May., 2009


Changes water vapor (01_H2O)

1) The line widths, line shifts and width temperature dependence on this file are from   
 Gamache, email 2008/07/15.  The Gamache parameters are for the main isotope only and 
 have been used between 350 - 667 cm-1 where they have been validated with the NSA AERI-ER. 
                                                                                       
2) The line widths and in some cases line shifts of selected lines in the far-IR have been adjusted                                                                   
   to improve the agreement with downwelling spectral radiance data at the NSA ARM site.                                                                                       
   The results of this analysis will appear in a publication by J. Delamere et al.      
                                                                                       
3) Used the line position, line intensity, and Einstein A-Coefficient provided by L. Coudert (2008)
   for isotopologue 1 from 10 to 2500 cm-1.                          

There were 7025 lines in the 01_hit06.par file, which provides the line                
parameters in this range.  There are 6621 lines in the Coudert file.  The              
lines not provided by Coudert were retained in this database.                          
                                                                                       
 Data closely follows publication:                                                     
 Coudert et al., 2008, Vol. 251, pp. 339-351 (J. Molecular Spectroscopy)               
    L. H. Coudert                                                                      
    Laboratoire Interuniversitaire des Systemes Atmospheriques                         
    Faculte des Sciences et Technologie                                                
    Universite Paris 12                                                                
    61, Avenue du General de Gaulle                                                    
    94010 Creteil Cedex, France                                                        
                                                           
-----------------------------------------------------------------------------------------------------
 aer_v_2.1
-----------------------------------------------------------------------------------------------------

Nov., 2007

Added CH3OH molecule from HITRAN2004 to the aer_v_2.0 database.


-----------------------------------------------------------------------------------------------------
 aer_v_2.0
-----------------------------------------------------------------------------------------------------

July, 2007

The line file aer_v_2.0 is the same as aer_v_1.1 except that Niro et al., (2005) P/Q/R CO2 line coupling/mixing parameters 
are included.

 lncpl_lines:***********************************************************************
 lncpl_lines:*
 lncpl_lines:*                  CARBON DIOXIDE 
 lncpl_lines:*                                                                      
 lncpl_lines:*    LINE COUPLING PARAMETERS ARE PROVIDED FOR CO2 PQR BRANCHES for the 
 lncpl_lines:*    1st and 2nd isotope.                                                                  
 lncpl_lines:*                                                                          
 lncpl_lines:*        F. Niro, K. Jucks, J.-M. Hartmann, Spectra calculations in
 lncpl_lines:*          central and wing regions of CO2 IR bands. IV : Software and
 lncpl_lines:*          database for the computation of atmospheric spectra, (2005),
 lncpl_lines:*          J Quant Spectrosc Radiat Transfer, 95, 469-481.
 lncpl_lines:*
 lncpl_lines:*                                                                
 lncpl_lines:*    These coefficients corresponde to HITRAN2000 carbon dioxide 
 lncpl_lines:*    line parameters.   
 lncpl_lines:*
 lncpl_lines:***********************************************************************

-----------------------------------------------------------------------------------------------------
 aer_v_1.1
-----------------------------------------------------------------------------------------------------

June, 2007

This line file was built from HITRAN 2004 and includes updates up to 01/01/2007.  

The line files have been convert from HITRAN f160 to HITRAN f100 format.

Changes to the HITRAN 2004 are: 

 01_H2O    :   1) The intensities for the lines at 0.7417 cm-1 (22.233 GHz) and 6.1145 cm-1 (183 GHz).                                             
 01_H2O    :      - based on the work of S.A. Clough 2002                                                                                          
 01_H2O    :                                                                                                                                       
 01_H2O    :   2) The widths, temperature dependence of the widths, and the shifts                                                                  
 01_H2O    :       for the lines at 0.7417 cm-1 (22.233 GHz) and 6.1145 cm-1 (183 GHz)                                                            
 01_H2O    :      - based on the work of Bob Gamache (2007) see V. Payne etal., 2007 
   
 02_CO2    :   1) HITRAN 2000 CO2 lines are used to be consistent with line coupling parameters.

 07_O2     :   All oxygen lines above 0 cm-1 and below 1.497951 have been removed from this file and 
 07_O2     :   replaced by a single line in the merge operation with a strength 
 07_O2     :   appropriate to the lines removed and a width reflecting the effects of line coupling.   
 07_O2     :   The lines removed are d604 and d601 lines. 


Note: ONLY Q-BRANCH LINE COUPLING(MIXING) PARAMETERS FOR CO2 ARE INCLUDED IN THIS LINE FILE

 lncpl_lines:***********************************************************************
 lncpl_lines:*
 lncpl_lines:*                  CARBON DIOXIDE 
 lncpl_lines:*                                                                      
 lncpl_lines:*    LINE COUPLING PARAMETERS ARE PROVIDED FOR CO2 Q BRANCHES AT       
 lncpl_lines:*    618 CM-1, 667 CM-1, 720 CM-1, 721 CM-1, 742 CM-1 AND 792 CM-1.    
 lncpl_lines:*    (for additional Q-branches see below)                             
 lncpl_lines:*  ................................................................... 
 lncpl_lines:*  .                                                                 . 
 lncpl_lines:*  .   THE LINE COUPLING COEFFICIENTS FOR CARBON DIOXIDE HAVE BEEN   . 
 lncpl_lines:*  .   MULTIPLIED BY A FACTOR OF 1.3 TO PROVIDE AGREEMENT WITH THE   . 
 lncpl_lines:*  .   THE HIS DOWNLOOKING DATA OF 14 APRIL 1986 AND WITH THE HIS    . 
 lncpl_lines:*  .   UPLOOKING GAPEX DATA OF 1 NOV. 1988. (CLOUGH ET AL 1991).     . 
 lncpl_lines:*  .                                                                 . 
 lncpl_lines:*  ................................................................... 
 lncpl_lines:*                                                                      
 lncpl_lines:*   These coefficients have been updated to provide consistency with
 lncpl_lines:*    HITRAN96 carbon dioxide line parameters (June 1999).
 lncpl_lines:*                                                                   
 lncpl_lines:*                                                                   
 lncpl_lines:* 1)Includes first and second order Q-branch line coupling parameters.
 lncpl_lines:*     Hoke, M.L., S.A. Clough, W.J. Lafferty, and B.W. Olson. Line coupling in 
 lncpl_lines:*     oxygen and carbon dioxide. In J. Lenoble and J.F. Geleyn, editors, IRS 88: 
 lncpl_lines:*     Current Problems in Atmospheric Radiation, 368-371. A. Deepak Hampton, VA,       
 lncpl_lines:*     1989.
 lncpl_lines:*  
 lncpl_lines:* 2)Includes first order Q-branch line coupling parameters at 
 lncpl_lines:*   1932, 2076, 2093, 2193 cm-1. 
 lncpl_lines:*     Strow, L.L, D.C. Tobin, and S.E. Hannon. A compilation of first-order line 
 lncpl_lines:*     mixing coefficients for CO2 Q-branches. J. Quant. Spectrosc. Radiat. 
 lncpl_lines:*     Transfer, 52, 281-294, 1994.                 
 lncpl_lines:***********************************************************************                      
 lncpl_lines:*                                                                     
 lncpl_lines:*                   OXYGEN                                            
 lncpl_lines:*                                                                     
 lncpl_lines:*    A TRANSITION AT 0.000010 CM-1 HAS BEEN PROVIDED IN ORDER TO      
 lncpl_lines:*    TREAT THE 'ZERO FREQUENCY' (NON-RESONANT) O2 BAND AS A SINGLE    
 lncpl_lines:*    LINE WITH A PRESSURE DEPENDENT REFERENCE HALFWIDTH, REPLACING    
 lncpl_lines:*    THE 'ZERO FREQUENCY' TRANSITIONS ON THE HITRAN DATA BASE FOR     
 lncpl_lines:*    THE MAIN ISOTOPE.                                                
 lncpl_lines:*                                                                     
 lncpl_lines:*    THE COUPLING COEFFICIENTS FOR THE 2 CM-1 (60 GHZ) FOR THE MAIN   
 lncpl_lines:*    ISOTOPE ARE INCLUDED. THESE HAVE BEEN CALCULATED BY CLOUGH AND   
 lncpl_lines:*    HOKE.                                                            
 lncpl_lines:*                                                                     
 lncpl_lines:*           THE O2 LINE COUPLING COEFFICIENTS WERE PROVIDED BY        
 lncpl_lines:*           CLOUGH (1987). Y'S AND G'S WERE CALCULATED FOR OXYGEN     
 lncpl_lines:*           USING A RELAXATION MATRIX WHICH WAS FIT TO SMITH'S        
 lncpl_lines:*           HALFWIDTHS.                                               
 lncpl_lines:*                                                                     
 lncpl_lines:*             NT        TEMP         X       A1            A2         
 lncpl_lines:*                                                                     
 lncpl_lines:*              1     200.0000     .7500  7.328597E-03  7.303265E-01   
 lncpl_lines:*              2     250.0000     .7500  5.467282E-03  7.535262E-01   
 lncpl_lines:*              3     296.0000     .7500  4.371108E-03  7.712720E-01   
 lncpl_lines:*              4     340.0000     .7500  3.632896E-03  7.855163E-01   
 lncpl_lines:*                                                                     
 lncpl_lines:*        ALPHA(T) = ALPHA(TO)*(TO/T)**X                               
 lncpl_lines:*                                                                     
 lncpl_lines:*        W(J,K) = A1*SQRT(RHO(J)/RHO(K))*EXP(-A2*BETA*ABS(E(J)-E(K))) 
 lncpl_lines:* 
 lncpl_lines:*   These coefficients have been updated to provide consistency with  
 lncpl_lines:*   HITRAN96 oxygen line parameters (June 1999).
 lncpl_lines:*
 lncpl_lines:*    
 lncpl_lines:*   The O2 coupled lines have been modified (2006/07/31) such that the:
 lncpl_lines:*        - the O2 line widths and line coupling parameters for 
 lncpl_lines:*	         the 60 GHz band and the 120 GHz line have been 
 lncpl_lines:*          changed to those of Tretyakov et al, 2005.		       
 lncpl_lines:***********************************************************************

For a detail description of the file contents refer to the header on the top of the files.


-----------------------------------------------------------------------------------------------------
 aer_v_1.0
-----------------------------------------------------------------------------------------------------

May, 2004

In order to keep generality for cross-platform comparisons, and incorporate recent spectroscopic 
line parameter improvements, the AER (aer_v_1.0) spectroscopic line file is built from HITRAN2000  
with the updates from 2001 available as of 08/2003 (last update 09/2001).  The AER line file also 
includes additional updates to CH4, CO, 03, HCOOH, and 02, which are expected to be included in 
HITRAN updates in the near future:

      CH4 (Linda Brown, JPL) : Provided to HITRAN and MIPAS (corrected section from 922.65 to 1678.33 cm-1)
      CO  (Linda Brown, JPL) : Provided to HITRAN (widths (self- and air-), temperature dependence and air- shifts)
      03   (Wagner et al. 2002, JGR, 107, D22, 2002) : Provided to HITRAN
      HOOCH  (Perrin A, Rinsland CP, Goldman A., JGR, 104, 18661-66, 1999) : Provided to HITRAN
      02  update in which the Oxygen-17 band isotopic line parameters have been changed to those                                           
          reported by Camy-Peyret (IRS, 2000) 


The line list covers the full HITRAN spectral range and is provided both as one total 
line list (line_file/aer_v_1.0)  and as seperate individual line lists for each molecule 
(line_files_By_Molecule/*). 



