Towards the use of the Ozone Monitoring Instrument (OMI)

The Ozone Monitoring Instrument (OMI) is a UV/VISible spectrograph (270-500 nm). It employs two-dimensional arrays of CCD detectors for simultaneous registration of numerous spectra from ground pixels in the swath perpendicular to the flight direction. As a result, OMI provides (almost) daily global coverage in combination with small ground pixel sizes (nominally 13 x 24 km at nadir, minimum 13 x 12 km at nadir). The small ground pixels allow retrieval of tropospheric constituents. The OMI Flight Model is currently being integrated and will be launched on the Aura satellite in 2003 as part of NASA s Earth Observing System. This paper discusses relationships between and the details of the onground calibration approach of OMI, the data processing of level 0 data (raw data) to level 1b data (geophysical data) and the foreseen activities for in-flight calibration.