Laboratory ozone absorption spectra were measured simultaneously in the visible (515−715 nm) and infrared(2070−2140 cm-1) spectral regions using SCISAT-1's MAESTRO (Measurement of Aerosol Extinction inthe Stratosphere and Troposphere Retrieved by Occultation) and ACE-FTS (Atmospheric ChemistryExperiment−Fourier Transform Spectrometer) spectrometers. An intercomparison of these measurements wasused to assess the relative accuracy of HITRAN absolute line strengths, for which there was a 4% changebetween the 2000 and 2004 versions. Results reported here show that Chappuis band cross section strengthsare more consistent with the HITRAN 2004 4.8 μm band line strengths than with the 2000 compilation.
