Titan's haze structure in 1999 from spatially-resolved narrowband imaging surrounding the 0.94 μm methane window

Autor:	Nancy J. Chanover, Carrie M. Anderson, D. A. Glenar, Pascal Rannou, J. J. Hillman, Christopher P. McKay
Rok vydání:	2004
Předmět:	Haze Imaging spectrometer Astrophysics Atmospheric sciences Latitude law.invention Telescope symbols.namesake Wavelength Geophysics law Limb darkening symbols Radiative transfer General Earth and Planetary Sciences Titan (rocket family) Geology
Zdroj:	Geophysical Research Letters. 31
ISSN:	0094-8276
DOI:	10.1029/2004gl019857
Popis:	[1] We use narrowband images of Titan obtained in November 1999 to explore the haze vertical structure in Titan's lower atmosphere. The images were taken with the Mount Wilson 2.54 m telescope using the NASA/GSFC-built Acousto-Optic Imaging Spectrometer. These images were recorded at five wavelengths surrounding the 0.94 μm methane window and are sensitive to a range of altitudes in Titan's lower atmosphere. We characterize Titan's limb darkening by fitting the Minnaert function limb darkening coefficient k to our data at 0° latitude and compare our observed limb darkening to that predicted from three radiative transfer models. The vertical haze profiles suggest a gap in haze below 75 km, with an increase in haze abundance near the surface.
Databáze:	OpenAIRE
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