Winds in space

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Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987spfl...29...30b&link_type=abstract

Spaceflight (ISSN 0038-6340), vol. 29, July 1987, p. 30-32.

Other

Airglow, Atmospheric Circulation, Michelson Interferometers, Space Shuttle Payloads, Upper Atmosphere, Wind Measurement, Atmospheric Temperature, Cooling, Temperature Control, Wavelengths

Scientific paper

The Wide Angle Michelson Doppler Imaging Interferometer (WAMDII) designed to fly aboard the Shuttle in order to study the winds and temperatures of the upper atmosphere from space is described. The interferometer detects the faint light of the upper atmosphere. The airglow appears as a thin band of light a few degrees above the horizon. The color of the wavelength of the airglow is examined to determine the speed of the atoms where the light originates; the manner in which the WAMDII measures the changes in wavelength is discussed. The temperature of the upper atmosphere is related to the color of the emitted light, and the interferograms are analyzed to provide temperature data. Consideration is given to the thermal control system, CCD cooling, filter wheel, scanning mirror, shutter of the WAMDII. Other wind measurement techniques are also discussed.

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