NASA NTRS · 19720034677
Infrared radiometry experiment on Mariner 9.
Abstract
A two-channel IR radiometer similar to that carried on Mariners 6 and 7 was included on Mariner 9 in order to extend and improve the surface coverage and spatial resolution obtained on the earlier flights. The minimum brightness temperature observed by the Mariner 9 radiometer over the shrinking south polar cap, slightly after Martian southern midsummer, is at least 25 K above the temperature that would correspond to frozen carbon dioxide.
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Chase, S. C., Jr., Kieffer, H. H., Miner, E., Muench, G., Neugebauer, G., Hatzenbeler, H.. 1972-01-21. Infrared radiometry experiment on Mariner 9.. https://ntrs.nasa.gov/citations/19720034677
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