ACE-FTS, MLS and Mipas Inter-Comparisons of Atmospheric Trace Species

The Atmospheric Chemistry Experiment - Fourier Transform Spectrometer (ACE-FTS), on the Canadian SCISAT satellite, has been observing the Earth's limb via solar occultation since 2004. This high-resolution (0.02 cm-1) spectrometer, operating between 750 and 4400 cm-1, provides profiles of temperature, pressure, and volume mixing ratio of more than 30 atmospheric trace gases and over 20 subsidiary isotopologues. This presentation will describe recent developments in the newest version of the ACE-FTS level 2 data set, version 3.5, and will discuss the results of comparisons with co-located measurements from the Microwave Limb Sounder (MLS), on the Aura satellite, and from the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS), on the Envisat satellite. Comparisons with MLS include the species O3, HCl, HNO3, N2O, H2O, CO, and CH3Cl; and comparisons with MIPAS include the species O3, CO, H2O, CH4, N2O, ClONO2, CCl2F2, CCl3F, NO, NO2, HNO3, HNO4, N2O5, C2H6, and HCN.