2000
DOI: 10.1006/icar.2000.6424
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CO on Titan: More Evidence for a Well-Mixed Vertical Profile

Abstract: We report new interferometric observations of the CO (2 − 1) rotational transition on Titan. We find that the spectrum is best fit by a uniform profile of 52 ppm, with estimated errors of 6 ppm (40 to 200 km) and 12 ppm (200 to 300 km).

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Cited by 31 publications
(27 citation statements)
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“…These models however do not explain the latitudinal methane distribution and indicate that clouds preferentially occur at low latitudes, contrary to recent observations (Courtin & Kim 2002;Gurwell & Muhleman 2000;Kim et al 2000;Tokano et al 2001).…”
Section: A Griffithcontrasting
confidence: 77%
“…These models however do not explain the latitudinal methane distribution and indicate that clouds preferentially occur at low latitudes, contrary to recent observations (Courtin & Kim 2002;Gurwell & Muhleman 2000;Kim et al 2000;Tokano et al 2001).…”
Section: A Griffithcontrasting
confidence: 77%
“…This information is "encoded" in the line shape through pressure broadening and can be retrieved within certain bounds through suitable numerical inversion or radiative transfer modeling. We updated and expanded our iterative leastsquares inversion algorithm, previously used to measure the atmospheric abundance of CO on Titan (Gurwell & Muhleman 1995, 2000, to allow analysis of the rotational lines observed for this work.…”
Section: Analysis Results and Discussionmentioning
confidence: 99%
“…As access to the millimeter and submillimeter wavelength bands has improved, there has been a series of ground-based observational studies of Titan's atmosphere (e.g., Muhleman et al 1984;Tanguy et al 1990;Gurwell & Muhleman 1995, 2000Hidayat et al 1997Hidayat et al , 1998Marten et al 2002). The Submillimeter Array 2 (SMA) is well suited for observing Titan.…”
mentioning
confidence: 99%
“…The abundance of carbon monoxide CO at the surface was assumed to be 5. 2 × 10 −5 on the basis of the (Gurwell & Muhleman 2000) high resolution ground-based interferometric observations. Molecular hydrogen H 2 abundance was assumed to be equal to 1.1 × 10 −3 following (Samuelson et al 1997).…”
Section: Photochemical Modelmentioning
confidence: 99%