Evaluation of the ACE FTS for obtaining nadir measurements

Eldon Puckrin; Wayne F. J. Evans; Chris Ferguson; Kaley A. Walker; Denis Dufour

doi:10.1117/12.519178

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27 February 2004 Evaluation of the ACE FTS for obtaining nadir measurements

Eldon Puckrin, Wayne F. J. Evans, Chris Ferguson, Kaley A. Walker, Denis Dufour

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Proceedings Volume 5268, Chemical and Biological Standoff Detection; (2004) https://doi.org/10.1117/12.519178
Event: Optical Technologies for Industrial, Environmental, and Biological Sensing, 2003, Providence, RI, United States

Abstract

The SciSat-1 mission is a dedicated Canadian science satellite that will investigate processes that control the distribution of ozone in the stratosphere. The SciSat-1 satellite consists of primarily two science instruments; an Atmospheric Chemistry Experiment (ACE) high-resolution Fourier-transform spectrometer (FTS) and an ultraviolet-visible-near-infrared spectrograph. These instruments will primarily function in occultation mode; however, during the dark portion of the orbit the Earth will pass between the sun and the satellite. This configuration will give rise to the opportunity of acquiring some nadir-view FTIR spectra of the Earth. Since the ACE FTS was designed to view a hot source (i.e., the Sun) at high resolution using a single scan, it is necessary to determine if the FTS will provide nadir spectra of the relatively cold atmosphere and surface with a sufficient signal-to-noise ratio. Methane, ozone and carbon monoxide gases were used in the cell for the purpose of determining the measurement characteristics of the ACE FTS instrument for a low-intensity source. These measurements were compared with data obtained from the Interferometric Monitor for Greenhouse (IMG) gases onboard the ADEOS satellite. The results show that the ACE FTS should be able to measure the abundant trace gases in the atmosphere with sufficient signal-to-noise ratio.

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Eldon Puckrin, Wayne F. J. Evans, Chris Ferguson, Kaley A. Walker, and Denis Dufour "Evaluation of the ACE FTS for obtaining nadir measurements", Proc. SPIE 5268, Chemical and Biological Standoff Detection, (27 February 2004); https://doi.org/10.1117/12.519178

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