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Physics in The Atmospheric Chemistry Experiment
Pages 4 (1004 words)
Introduction- Atmospheric Chemistry Experiment (ACE) was a two-year mission by the Canadian Space Agency with University of Waterloo and aims at remote sensing through the use of satellite SCISAT-1 program. The Earth's atmospheric layers were monitored and studied for the various changes they undergo and their further influence on the climate of the globe…
This paper discusses the physics involved in the experiment and how it is used to understand the effect of changes in the atmospheric layers on the ozone layer over the Arctic pole. Various parameters like temperature, pressure, etc. have been measured by custom made apparatus like the interferometers, spectrometers, spectrophotometers, etc.
Launch- ACE used two major instruments in the mission. While the first instrument was a Fourier Transform Spectrometer (FTS), the other instrument was a dual optical spectrometer (Bernath, na). It was launched by NASA on August 12, 2003 using a Pegasus XL rocket at 650km above the Earth. The satellite was launched at an angle of 740 and orbited the Earth to cover tropical, mid-latitude and the Polar regions. The satellite operated in the UV-Visible-NIR region of the spectrum with the ACE-FTS being used in the NIR region while the MAESTRO Spectrophotometer was being used over the UV-VIS-NIR region (ACE, 2009).
FTS operated in the range of 2-13 microns with a high resolution of 0.02cm-1 and a vertical resolution of 4km to up to 150km. the MAESTRO spectrophotometer operated in the UV-VIS-NIR spectral region of 285-1030nm with a vertical resolution of 1-2 km. ...
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