Abstract: The Cassini Composite Infrared Spectrometer (CIRS) observed thermal emission in the far- and mid-infrared (from 10 to 1500 cm(exp -1)), enabling spatiotemporal studies of ethane on Titan across the span of the Cassini mission from 2004 through 2017. Many previous measurements of ethane on Titan have relied on modeling the molecule’s mid-infrared ?(sub 12) band, centered on 822 cm(exp -1). Other bands of ethane at shorter and longer wavelengths were seen, but have not been modeled to measure e…