The development of GEISA (Gestion et Etude des Informations Spectroscopiques Atmosphériques : Management and Study of Spectroscopic Information) was started in 1976 at Laboratoire de Météorologie Dynamique (LMD) in France [Chédin et al. (1982)], and regularly updated [Husson et al. (1992, 1994), Jacquinet-Husson et al. (1999, 2003a, 2003b, 2005, 2008, 2011, 2016), Armante et al (2016). GEISA is a computer-accessible spectroscopic database, designed to facilitate accurate forward atmospheric radiative transfer calculations using a line-by-line and (atmospheric) layer-by-layer

In the current weeks are being implemented:

– The on line access to the microphysical and optical properties of atmospheric aerosols GEISA-2015 sub-database. For this GEISA new edition, a significant update (since the last one in 2003) occurred thanks to complementary data from NCAR (Massie’s contribution) and from the ARIA archive developed at Oxford University. The former content remains available on line from GEISA-2011 access;

– The graphical tools associated to the line parameters sub-database.

– Among the previously existing molecules, 20 molecular species have been updated. A new molecule (SO3) has been added. HDO, isotopologue of H2O, is now identified as an independent molecular species. 8 new isotopologues have been added to the GEISA-2015 database.

GEISA-2015 Description GEISA-2015 Data Access
Line transition parameters Interactive access
FTP access
– Graphical tool
Absorption cross-sections IR
Microphysical and optical properties of atmospheric aerosols – Aerosols

Questions ?