Radiometric Inter-Comparison between Ozone Mapping Profiler Suite and Global Ozone Monitoring Experiment-2 on METOp-A/B

Thursday, 18 December 2014
Jian Zeng1, Xiangqian Wu2, Ruediger Lang3, Rosemary Munro3, Lawrence E Flynn2, Michael Grotenhuis1, C. Trevor Beck2 and Sherry Pan4, (1)ERT@NOAA/NESDIS/STAR, College Park, MD, United States, (2)NOAA/NESDIS/STAR, College Park, MD, United States, (3)EUMETSAT, Darmstadt, Germany, (4)University of Maryland College Park, CICS, College Park, MD, United States
Simultaneous Nadir Overpass (SNO) prediction has been operationally performed at NOAA/NESDIS/STAR to foretell two polar-orbiting satellite over-passing locations and times, temporal and spatial distances, as well as solar zenith angles. The SNO method has been used for radiometric inter-comparison between various satellites including Suomi NPP (S-NPP) VIIRS, Aqua MODIS, AVHRR, GOES and NOAA series mainly in visible, near-infrared and infrared channels. For back-scattered UltraViolet (BUV) radiation sensors, instrument radiometric inter-comparison is more challenging mainly due to the complexities of much weaker UV signals and larger footprints. NOAA/NESDIS/STAR has developed an algorithm for extensive SNO comparisons between the Ozone Mapping and Profiler Suite (OMPS) nadir instruments and the Global Ozone Monitoring Experiment-2 (GOME-2). It is found the reflectance discrepancies between OMPS and GOME-2 on METOp-B are within 5% for NM and 10% for NP.