![]() In the model, a binary nitrogen-methane composition is assumed for Titan's atmosphere, quantified by the methane fraction measured by the gas chromatograph/mass spectrometer (GCMS) onboard Huygens. The vertical temperature profile places the tropopause about 40 km above the surface. The calculations are done using one author's previous model modified to accommodate non-ideal equations of state. ![]() Measurements of thermodynamic quantities in Titan's atmosphere during the descent of Huygens in 2005 are used to predict the vertical profiles for the speed and intrinsic attenuation (or absorption) of sound. SRD 69 NIST Chemistry WebBook (Web, free access)Â Â The NIST Chemistry WebBook contains: Thermochemical data for over 7000 organic and small inorganic compounds thermochemistry data for over 8000 reactions IR spectra for over 16,000 compounds mass spectra for over 33,000 compounds UV/Vis spectra for over 1600 compounds electronic and vibrational spectra for over 5000 compounds constants of diatomic molecules(spectroscopic data) for over 600 compounds ion energetics data for over 16,000 compounds thermophysical property data for 74 fluids.Ī model for the vertical sound speed and absorption profiles in Titan's atmosphere based on Cassini-Huygens data. ![]() National Institute of Standards and Technology Data Gateway ![]()
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