"New Study Explains Unexpected Cooling of Titan’s ..." Topic
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| Tango01 | 25 Nov 2017 11:42 a.m. PST |
…Polar Atmosphere. "The polar atmosphere of Titan recently experienced a rapid cooling, contrary to all model predictions and differing from the behavior of all other terrestrial planets in the Solar System. Usually, the high altitude polar atmosphere in a planet's winter hemisphere is warm because of sinking air being compressed and heated — similar to what happens in a bicycle pump. Puzzlingly, Titan's polar vortex seems to be extremely cold instead. Before its final plunge into Saturn's atmosphere on September 15, 2017, NASA's Cassini orbiter obtained a long series of observations of Titan's polar atmosphere using Cassini's Composite Infrared Spectrometer (CIRS) instrument…."
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