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Mars' 2007 dust storm as observed by Mars Odyssey THEMIS
Mars' 2007 dust storm as observed by Mars Odyssey THEMIS This animation is comprised of "dust maps" of Mars captured by the Thermal Emission Imaging System (THEMIS) on Mars Odyssey. The maps show the atmosphere's opacity at an infrared wavelength of 9 micrometers. The scale bar runs from a nearly clear opacity value of 0.05 to 0.40, which represents an approximately two-thirds reduction in the amount of sunlight reaching the ground. For the latest dust maps, visit the THEMIS website. This animation will be updated as the THEMIS team posts more maps. NASA / JPL-Caltech / Arizona State University / animation by Emily Lakdawalla