Composite infrared spectrometer (CIRS) on Cassini
نویسندگان
چکیده
منابع مشابه
Water vapor in Titan’s stratosphere from Cassini CIRS far-infrared spectra
Here we report the measurement of water vapor in Titan’s stratosphere using the Cassini Composite Infrared Spectrometer (CIRS, Flasar, F.M. et al. [2004]. Space Sci. Rev. 115, 169–297). CIRS senses water emissions in the far infrared spectral region near 50 lm, which we have modeled using two independent radiative transfer codes (NEMESIS (Irwin, P.G.J. et al. [2008]. J. Quant. Spectrosc. Radiat...
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We present a short review of our current knowledge on Saturn’s stratospheric thermal structure and composition (hydrocarbons) based on recent Cassini/CIRS observations. Anomalies in the temperature field and in the meridional distribution of hydrocarbons hint at atmospheric dynamical phenomena at play. The two most notable features are an obseved asymmetry in the hydrocarbons distribution at hi...
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Although propane gas (C3H8) was first detected in the stratosphere of Titan by the 14 Voyager IRIS infrared spectrometer in 1980, obtaining an accurate measurement of its 15 abundance has proved difficult. All existing measurements have been made by modeling 16 the ν26 band at 748 cm : however different analyzes over time have yielded quite different 17 results, and it also suffers from confusi...
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The Cassini spacecraft completed three close flybys of Saturn's enigmatic moon Enceladus between February and July 2005. On the third and closest flyby, on 14 July 2005, multiple Cassini instruments detected evidence for ongoing endogenic activity in a region centered on Enceladus' south pole. The polar region is the source of a plume of gas and dust, which probably emanates from prominent warm...
متن کاملLatitudinal variations of HCN, HC3N, and C2N2 in Titan’s stratosphere derived from Cassini CIRS data
Midand far-infrared spectra from the Composite InfraRed Spectrometer (CIRS) have been used to determine volume mixing ratios of nitriles in Titan’s atmosphere. HCN, HC3N, C2H2, and temperature were derived from 2.5 cm −1 spectral resolution mid-IR mapping sequences taken during three flybys, which provide almost complete global coverage of Titan for latitudes south of 60◦ N. Three 0.5 cm−1 spec...
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ژورنال
عنوان ژورنال: Applied Optics
سال: 2017
ISSN: 0003-6935,1539-4522
DOI: 10.1364/ao.56.005274