INFRARED ATMOSPHERIC SOUNDING INTERFEROMETER

The Infrared Atmospheric Sounding Interferometer (LASI), is part of th e operational meteorological payload managed by EUMETSAT. The baseline platform for the first flight model of the instrument is the METOP-1 polar platform to be launched during 2002. IASI consists of a Fourier Transform Spectrometer (FTS) based on a Michelson Interferometer coupl ed to an Integrated Imaging System (IIS) which allows characterisation of cloudiness inside the FTS field of view. LASI will provides mainly H2O and temperature profiles in the free Troposphere and lower Strato sphere with 1 degrees K/1Km vertical resolution in the low troposphere . IASI phase B is running under CNES management. This paper gives the present status of LASI design and associated performances. (C) 1997 In ternational Astronautical Federation. Published by Elsevier Science Lt d.