LNFL_v2.5

•  Extended the molecule range in LNFL to include Methanol (CH3OH); HITRAN molecule number 39.

LNFL_v2.4

•  Same as LNFL_v2.3 with an improved directory structure to be more consistent with standard release packages.  For example: The program is now compiled in a "build" directory instead of the top level; the executable file still get placed in the top level directory.

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LNFL_v2.3

•  The major change in this version is that the internally stored  line coupling information for oxygen and carbon dioxide is no longer written to TAPE2 for susequent merging with TAPE1.

• Line coupling information must be supplied explicitly by the user, either on TAPE2 or TAPE1.

 
• The meaning of the NOCPL option has been changed such that, if it is invoked, all line coupling information from TAPE1 or TAPE2 will be suppressed on the output files, TAPE3 (unformatted)  and TAPE7 (formatted).

 
• Some modifiations to the coding have been made for simplification.

• Upgraded makefiles and corresponding utilities to include more compilers.

LNFL_v2.1

•  In the Vib.dat file available for HITRAN2004 no entry exists for the  vibrational state ' 2 3 0' for vibrational class 6.  However, there is a deuterated water vapor line in HITRAN 2004 at 12657.367357 cm-1 with upper state quantum numbers 2 3 0. As an interim measure to address this problem '2 3 0' has been added to the vibrational table for vibrational class 6, h_vib(6,116), and n_lnvl_v(6) has been increased from 115 to 116.  (S. A. Clough)

 

LNFL_v2.0

• This is the first release of LNFL that accommodates the 160 character format adopted for HITRAN_2004. To facilitate this format change, some of the LNFL flags formerly on Record 3 have now been distributed to Records 3 and 4. On Record 3, the flags include those that are general for the LNFL run and also those that are specific to TAPE1. On Record 4, the flags include those specific to TAPE2. The default format for LNFL will remain the 100 character format. The rationale for this choice is that the vibrational data are more amenable to the LBLRTM Non-LTE calculation than those associated with the 160 character format for which the vibrational information had been expanded to facilitate association of the lines with the quantum mechanical vibrational designations.

• Note that no blocking for TAPE1 and TAPE2 is now the default, so that flags NBLK1 and NBLK2 are now ignored and are not necessary. They have been replaced with flags BLK1 and BLK2 to indicate the respective files in blocked format.

• A module including for line coupling coefficients is included for use with HITRAN2004. The carnbon dioxide frequencies have been changed in this module to be consistent with HITRAN2004 but no other parameters have been modified. In particular, the required constraints on the line coupled bands have NOT been checked.

• In this release, the capability to accomodate the 160 character format is restricted to TAPE1.

HITRAN2004 reference: Rothman, L.S., D. Jacquemart, A. Barbe, D.C. Benner, M. Birk, L.R. Brown, M.R. Carleer, C. Chackerian, Jr, K. Chance, V. Dana, V.M. Devi, J.-M. Flaud, R.R. Gamache, A. Goldman J.-M. Hartmann, K.W. Jucks, A.G. Maki, J.Y. Mandin, S. Massie, J. Orphal, A. Perrin, C.P. Rinsland, M.A.H. Smith, R.A. Toth, J. Vander Auwera, P. Varanasi, G. Wagner, The HITRAN 2004 Molecular Spectroscopic Database, J. Quant. Spectrosc. Radiat .Transfer, in press, 2005. . (S.A. Clough)

LNFL_v1.15

• Added a makefile and utility in order to run LNFL on LINUX INTEL.  (M.W. Shephard and H. Nair)

LNFL_v1.14

The following are descriptions of important changes contained in LNFLv1.14:
 

• The first order line coupling coefficients for oxygen have been scaled by a factor of 0.87.  The second order line coupling coefficients for  oxygen have been set to zero.  This is based on the analysis of Cimini et al. using the scanning MWR data from ARM SGP.   (K. Cady-Pereira and S.A. Clough)

• Modified the first isotope from 0 to 1 and the E" to -1. for the first coupled oxygen line in LNFL (M.W. Shephard).

• Modified LNFL to read over any header information at the top of the input spectroscopic line list.  (S.A. Clough)

• For H2O the lower state energies with value of  -1. have been replaced  with a value of -300. cm-1 outside of LNFL in the linefile (the negative value of the lower state energy indicates that the value is not known).  This value is modified in the line file to achieve a more probable temperature correction.  LNFL has been changed so that it DOES NOT change this E" value and passes the -300 directly to LBLRTM. (S.A. Clough and M.W. Shephard)

• Expanded maximum molecule number up to 38 molecules.   (S.A. Clough)

• Made changes to program to be consistent with TIPS 2002 inplemented in LBLRTM. (S.A. Clough)

LNFL_v1.8

1) There was code implemented to report and skip ver spectral lines that cannot be handled properly by TIPS  in LBLRTM.
    (H. Snell and S.A. Clough)

LNFL_v1.7.1

There were only minor changes made to LNFL for version lnfl_v1.7.

1) The revision number in the TAPE6 output comments was updated.
     (M.W.Shephard)

2) To reflect the increase portability of LBLRTM, makefiles and utilities are provided to run LNFL on the followingplatforms:
 

System	Mfr.	Compiler	sgl
IRIX	SGI		f90
SOLARIS	SUN		f90,f77
AIX	IBM		f90
LINUX	----	PGI	f90
OS X	Apple	Absoft	f90
		g77 (gnu)	g77

  (S.A. Clough, M.W. Shephard, P. VanDelst, A. Goldman)

LNFL_v1.6

IMPORTANT CHANGES IN LNFL AND THE LINE PARAMETER DATABASE

The following are descriptions of important changes contained in LNFL:

• Line coupling parameters for the CO2 Q branches in the nu2 region (600-800 cm-1) have been updated to be consistent with the HITRAN_96 line parameters.  [Includes first and second order coupling parameters (Hoke, et al., 1989)]

• Line coupling parameters for the CO2 have been included (following Strow et al, 1994) at 1932, 2076, 2093, 2193 cm-1. [First order coupling only]

• Capability to have molecule numbers large than 36 in the linefile.

Atmospheric and Environmental Research Inc. (AER)