The 2003 edition of the GEISA/IASI spectroscopic database

Abstract

The content of the current 2003 version, GEISA/IASI-03, of the computer-accessible spectroscopic database, GEISA (Gestion et Etude des Informations Spectroscopiques Atmosphériques: Management and Study of Atmospheric Spectroscopic Information)/IASI (Infrared Atmospheric Sounder Interferometer) is described. The GEISA/IASI-03 system comprises three independent spectroscopic archives related with: an individual line transition spectroscopic parameters sub-database which contains 14 molecules, i.e.: H2O, CO2, O3, N2O, CO, CH4, O2, NO, SO2, NO2, HNO3, OCS, C2H2, N2, representing 51 isotopomers and 702,550 entries, in the spectral range 599-3001 cm-1; an absorption cross-sections sub-database which comprehends 6,572,329 entries related to 6 molecules, i.e.: CFC-11, CFC-12, CFC-14, HCFC-22, N2O5, CCl4; a catalog on micro-physical and optical properties of atmospheric aerosols, mainly refractive indices. The modifications and improvements, made since former editions in terms of database content and management, are detailed. GEISA/IASI is elaborated with the purpose of assessing the IASI (Infrared Atmospheric Sounding Interferometer: http://earth-sciences.cnes.fr/IASI/) measurements capabilities, within the ISSWG (IASI Sounding Science Working Group), in the frame of the CNES (Centre National d'Etudes Spatiales, France)/EUMETSAT (EUropean organization for the exploitation of METeorological SATellites) European Polar System (EPS) preparation. All the archived data can be handled though general and user friendly associated management software facilities, which are interfaced on the ARA (Atmospheric Radiation Analysis)/LMD (Laboratoire de Météorologie Dynamique) group web site at: http://ara.lmd.polytechnique.fr.