Validation of ACE-FTS stratospheric ozone profiles against Odin/OSIRIS measurements

Stratospheric ozone profiles measured by the Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE‐FTS) have been extensively compared with the coincident ozone profiles measured by the Optical Spectrograph and InfraRed Imager System (OSIRIS) on Odin. All coincidences took place between January 31 and August 5, 2004, with the majority in the Northern Hemisphere. ACE‐OSIRIS statistical comparisons were performed in the altitude range of 16–32 km where OSIRIS ozone data are in a good agreement, 5–7%, with another satellite and ground‐based instruments. At altitudes 3–5 km above and below the ozone peak, ACE‐FTS and OSIRIS profiles agree to within ∼4–7%, while in the vicinity of the peak the ACE‐FTS profiles are systematically lower than OSIRIS profiles by about 10%. This result is consistent for all latitudes between 30°S and 82°N.