go to TEMIS Home Page
 
 

SCIAMACHY surface LER database

 
   
 
European Space Agency

page last modified:
18 October 2017
     

The SCIAMACHY surface LER database contains the Lambertian-equivalent reflectivity (LER) of the Earth's surface at 29 one-nm wide wavelength bins between 335 and 1670 nm. The LER albedo values were derived from SCIAMACHY data using the Doubling-Adding KNMI (DAK) polarised radiative transfer code. The model consists of an atmosphere for which Rayleigh scattering and ozone absorption are taken into account, and which is bounded below by a Lambertian surface. The surface LER is available for each month of the year and for the following wavelengths: 335, 340, 354, 367, 380, 388, 425, 440, 463, 494, 510, 526, 546, 555, 564, 614, 640, 670, 758, 772, 862, 875, 1030, 1052, 1245, 1560, 1592, 1630, and 1670 nm -- a total of 29 wavelength bands.


Some examples of the database:


Examples of the SCIAMACHY surface LER: dependence on the month of the year (left) and dependence on the wavelength (right).

Archive:

The database is available as a single HDF-5 file:

SCIAMACHY_Envisat_MSC_050x050_surface_LER_v2.1.hdf5   (390 MB)

The intrinsic resolution of the databases is 1°×1°, but increased to 0.5°×0.5° near coastlines. The spatial resolution of the database grid therefore is 0.5°×0.5°. The format and the contents of the HDF-5 file are both explained here. Please note that this document was essentially written for the GOME-2 surface LER database. This should not be a problem as the file format is very similar. The current version of the database is 2.1. The version of the SCIAMACHY level-1 data that were used is 7.04-W.


Data use / License / Citation:

The SCIAMACHY surface LER database is free to use for commercial and non-commercial purposes. If you use the database for a publication (research or otherwise), or for any other purpose, please refer to the following publication:

L.G. Tilstra, O.N.E. Tuinder, P. Wang, and P. Stammes, Surface reflectivity climatologies from UV to NIR determined from Earth observations by GOME-2 and SCIAMACHY, J. Geophys. Res. Atmos. 122, doi:10.1002/2016JD025940, 2017 (link)

We suggest that you include the following acknowledgement: "We acknowledge the free use of the SCIAMACHY surface LER database provided by the Royal Netherlands Meteorological Institute (KNMI)."


Documentation:

  • L.G. Tilstra, O.N.E. Tuinder, P. Wang, and P. Stammes, Surface reflectivity climatologies from UV to NIR determined from Earth observations by GOME-2 and SCIAMACHY, J. Geophys. Res. Atmos. 122, doi:10.1002/2016JD025940, 2017 (link)

  • Presentation: Introduction of the GOME-2 and SCIAMACHY surface LER databases (PDF)

  • Presentation: Improvements and developments for the GOME-2 and SCIAMACHY surface LER databases (PDF)