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Detailed Reference Information |
Sonnabend, G., Sornig, M., Krötz, P.J., Schieder, R.T. and Fast, K.E. (2006). High spatial resolution mapping of Mars mesospheric zonal winds by infrared heterodyne spectroscopy of CO2. Geophysical Research Letters 33: doi: 10.1029/2006GL026900. issn: 0094-8276. |
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We present Mars zonal wind measurements by means of infrared heterodyne spectroscopy of CO2 features at 959.3917 cm-1 (10.423 ¿m). Observations were carried out using the Cologne Tuneable Heterodyne Infrared Spectrometer (THIS) from 5--8 December 2005 shortly after Mars opposition at the McMath-Pierce Solar Telescope of the National Solar Observatory on Kitt Peak in Arizona with an unprecedented spatial resolution of ~1.7 arcsec on a ~16 arcsec Martian disk. Mars was observed at six different latitudes close to the west (evening) limb and zonal winds were retrieved from Doppler shifts between CO2 non-thermal emission from the mesosphere and absorption features from low atmospheric regions. The season on Mars was late northern winter (LS ≈ 337¿). We retrieved retrograde winds at latitude 45¿N (-27 ¿ 17 m/s) that were particularly strong at the equator (up to -80 ¿ 13 m/s) and prograde winds at high southern latitudes (75¿S) up to 51 ¿ 29 m/s. |
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Abstract |
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Keywords
Planetary Sciences, Solar System Objects, Mars, Planetary Sciences, Solid Surface Planets, Atmospheres (0343, 1060), Planetary Sciences, Solid Surface Planets, Remote sensing, Atmospheric Composition and Structure, Planetary atmospheres (5210, 5405, 5704), Atmospheric Composition and Structure, Instruments and techniques |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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