COMPARISONS OF MIPAS O_3 PROFILES WITH GROUND-BASED MEASUREMENTS

摘要

For the ENVISAT validation different ground-basedrntechniques have been used. MIPAS O_3 profiles havernbeen compared with data from different ground-basedrntechniques such as FTIR, LIDAR, O_3 sondes, andrnMWR. All instruments used are operated within thernNDSC (Network for the Detection of StratosphericrnChange).rnThese comparisons covering different techniques asrnwell as different latitudes show a consistent picture.rnWithin 20 to 40 km MIPAS O_3 profiles are in goodrnagreement with ground-based data. Here, the differencesrnare within the combined error bars. Below 20 km andrnabove 50 km the differences are increasing. At thesernaltitudes MIPAS VMR values tends to be a bit too large.