In-flight performance of the Ozone Monitoring Instrument

V. M. Erik Schenkeveld, Glen Jaross, Sergey Marchenko, David Haffner, Quintus L. Kleipool, Nico C. Rozemeijer, J. Pepijn Veefkind, Pieternel F. Levelt
2017 Atmospheric Measurement Techniques  
<p><strong>Abstract.</strong> The Dutch–Finnish Ozone Monitoring Instrument (OMI) is an imaging spectrograph flying on NASA's EOS Aura satellite since 15 July 2004. OMI is primarily used to map trace-gas concentrations in the Earth's atmosphere, obtaining mid-resolution (0.4–0.6<span class="thinspace"></span>nm) ultraviolet–visible (UV–VIS; 264–504<span class="thinspace"></span>nm) spectra at multiple (30–60) simultaneous fields of view. Assessed via various approaches that include monitoring
more » ... nclude monitoring of radiances from selected ocean, land ice and cloud areas, as well as measurements of line profiles in the solar spectra, the instrument shows low optical degradation and high wavelength stability over the mission lifetime. In the regions relatively free from the slowly unraveling <q>row anomaly</q> (RA) the OMI irradiances have degraded by 3–8<span class="thinspace"></span>%, while radiances have changed by 1–2<span class="thinspace"></span>%. The long-term wavelength calibration of the instrument remains stable to 0.005–0.020<span class="thinspace"></span>nm.</p>
doi:10.5194/amt-10-1957-2017 fatcat:u4ebulz7rffhdggahb5ewai2ke