GEISA - GEISA is a computer-accessible spectroscopic database, designed to facilitate accurate forward radiative transfer calculations using a line-by-line and layer-by-layer approach. It was started over three decades at Laboratoire de Météorologie Dynamique (LMD) in France. GEISA is maintained by the ARA http://ara.lmd.polytechnique.fr/ group at LMD (Ecole Polytechnique) http://www.lmd.polytechnique.fr/ for its scientific part and by the ETHER group http://ether.ipsl.jussieu.fr/ (CNRS Centre National de la Recherche Scientifique-France) at IPSL (Institut Pierre Simon Laplace) for its technical part. Currently, GEISA is involved in activities related to the assessment of the capabilities of IASI (Infrared Atmospheric Sounding Interferometer on board of the METOP

MetOp

MetOp is a series of polar orbiting meteorological satellites operated by the European Organisation for the Exploitation of Meteorological Satellites. The satellites are all part af the EUMETSAT Polar System. It is intended to replace the soon to be retired TIROS network...

 European satellite) through the GEISA/IASI database derived from GEISA.

See also

• List of atmospheric radiative transfer codes
• Atmospheric radiative transfer codes
  Atmospheric radiative transfer codes
  An Atmospheric radiative transfer model, code or simulator calculates radiative transfer of electromagnetic radiation through a planetary atmosphere, such as the Earth's.- Methods :...
  
  
• Google scholar papers on GEISA
• Absorption spectrum
• 4A/OP
  4A/OP
  4A/OP or, Automatized Atmospheric Absorption Atlas,is an operational fast and accurate radiative transfer model for the infrared.4A/OP is a user-friendly software for various scientific applications , co-developed by LMD and NOVELTIS with the support of CNES .NOVELTIS...
  
  

External links

• http://ara.lmd.polytechnique.fr/ - ARA group at LMD
• http://ether.ipsl.jussieu.fr/ - CNES-CNRS ETHER website
• http://www.strw.leidenuniv.nl/~mathar/progs/toHITRAN.jar - GEISA to HITRAN file converter