Geophysical Research Letters
Atmospheric Chemistry Experiment
Geophysical Research Letters, vol. 32, no. 15, 2005
Geophysical Research Letters, vol. 32, no. 16, 2005
Description: SCISAT-1, also known as the Atmospheric Chemistry Experiment (ACE), is a Canadian-led satellite mission for remote sensing of the Earth's atmosphere. It was launched by NASA into low Earth circular orbit on 12 August 2003. The primary ACE instrument is a high spectral resolution Fourier Transform Spectrometer (FTS) operating from 2.2 to 13.3 microns. The satellite also features a dual spectrophotometer known as MAESTRO with wavelength coverage of 285 nm. A pair of filtered CMOS detector arrays records images of the Sun at 0.525 and 1.02 microns. Working primarily in solar occultation, the satellite provides altitude profile information for temperature, pressure, and the volume mixing ratios for several dozen molecules of atmospheric interest, as well as atmospheric extinction profiles.