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Comparisons of MIPAS V4.61 and Odin SMR V1.2 ozone data

Ashley Jones(1) and Donal Murtagh(1)

(1) Chalmers Tekniska Högskola, Hörsalsvägen 11, 41296 Göteborg, Sweden


We have compared level 2 MIPAS V4.61 and Odin SMR V1.2 ozone data using three methods, including Individual Profile Comparisons, zonal averages and balloon sonde matches for the period of July to November 2003. Direct comparisons showed both MIPAS and Odin SMR to generally agree within +/-10% between 19-52 km. However, on average, large differences (20%) were observed at the tropics below 25 km as well as a large difference (in excess of -30%) at the winter pole above 45 km. Between 30-45 km at all latitudes mean differences showed MIPAS to exceed Odin by 5-10%. Balloon profile comparisons used from seven different stations around the globe showed that below 30 km, both Odin SMR and MIPAS on average underestimated ozone by a maximum 12% and 5% respectively. Balloon matches also suggest that the differences seen at the tropics were possibly due to Odin underestimation, while the observed 10-15% difference seen between 30-45 km seen in the first two methods, could be due to MIPAS overestimation


Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry