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Lambert-equivalent reflectivities

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Robert Koelemeijer has made a database that contains the minimum Lambert-equivalent reflectivities values at eleven 1-nm wide wavelength bins.
Lambert-equivalent reflectivities (LERs) are derived from the GOME data using the Doubling-Adding KNMI (DAK) polarized radiative transfer code. The model consists of an atmosphere for which Rayleigh scattering and ozone absorption is taken into account, and which is bounded below by a Lambertian surface.
If you plan to use this database, please refer to the scientific paper describing the database, which is available as PDF file (2.7 MB)
Read Robert Koelemeijer's readme.txt file for some more details.
The improved surface albedo databases at 758 and 772 nm.

The improved surface albedo databases are based on the surface albedo database made by Koelemeijer et al. (2003) with a 1 deg x 1 deg resolution. The surface albedos at 758 and 772 nm are refined to the resolution of 0.25 deg x 0.25 deg at coast lines. Because of absorbing aerosol over deserts, the surface albedo over desert is lower than its real value. The problem was corrected by increasing the surface albedo over desert by 20% (Fournier et al., 2006). These improvements are only applied for the surface albedos at  758 and 772 nm, but not at the other wavelengths.

The database, consiting of a large number of files (each 199848 kB), is originally gathered together in one large file, together with a PostScript image of the data. Two examples of the data:

monthly minimum LER value
for March at 380 nm		 annual minimum value
at 380 nm

The large file containing the entire database can be downloaded (see below).
For more convenient downloading, this has also been split up in 11 zip-files,
one per wavelength. Each of these files contain the the following files:

Additionally, there are also flag-files sacspecFLAG[mm].dat for the TOTL-files, one for each month and valid for all wavelengths, hence these are zip-ed together in a 12-th file. The reason for splitting the database is to minimise downloading in case you do not need the data of all wavelengths.
wavelength data files * PostScript images *
335 nm ler335nm.zip ler335nm_ps.zip
380 nm ** ler380nm.zip ler380nm_ps.zip
416 nm ler416nm.zip ler416nm_ps.zip
440 nm ler440nm.zip ler440nm_ps.zip
463 nm ler463nm.zip ler463nm_ps.zip
494 nm ler494nm.zip ler494nm_ps.zip
555 nm ler555nm.zip ler555nm_ps.zip
610 nm ler610nm.zip ler610nm_ps.zip
670 nm ler670nm.zip ler670nm_ps.zip
758 nm ler758nm.zip
ler758nm_corr.zip
 ler758nm_ps.zip
ler758nm_corr_ps.zip ***
772 nm ler772nm.zip
ler772nm_corr.zip
 ler772nm_ps.zip
ler772nm_corr_ps.zip ***
for all
wavelengths		 lerFLAG.zip
(145 kB; unzip-ed 2.4 MB)		 lerFLAG_ps.zip
(765 kB; unzip-ed 3.7 MB)
NOTE: Use  "unzip"  or  "gunzip -S .zip"  to un-zip
 
   *)   The data files are all about 1 MB in size (unzip-ed 2.8 MB),
the PostScript files are 1.1-1.2 MB (unzip-ed 4.4 MB),
unless specified differently.
 
The original database (data and PostScript files)
as one large file: ler.tar.zip (24 MB; unzip-ed 86 MB)
 
**)   For this wavelength there is also a TOMS climatology:
TOMS_ler380nm.zip (286 kB)
***) Improved surface albedo databases.

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