HiRISE | A Cloudy Day (ESP_025914

NASA/JPL/University of Arizona

A Cloudy Day
ESP_025914_2540 Science Theme: Seasonal Processes

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Mars occasionally has cloudy weather. We intended to take a picture of the bright ice-covered dunes that are faintly visible through these thin clouds, but weather forecasting on Mars is just as challenging as on Earth.

Where the clouds are thin, the remaining bright winter ice is visible, protected in shallow grooves on the ground, in addition to covering the dunes.

Written by: Candy Hansen (21 March 2012)

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Acquisition date:	05 February 2012	Local Mars time:	2:20 PM
Latitude (centered):	73.876 degrees	Longitude (East):	334.715 degrees
Range to target site:	318.4 km (199.0 miles)	Original image scale range:	31.9 cm/pixel (with 1 x 1 binning) so objects ~96 cm across are resolved
Map projected scale:	25 cm/pixel	Map projection:	POLAR STEREOGRAPHIC
Emission angle:	4.6 degrees	Phase angle:	58.0 degrees
Solar incidence angle:	54 degrees, with the Sun about 36 degrees above the horizon	Solar longitude:	66.6 degrees, Northern Spring
For non-map projected products:
North azimuth:	102 degrees	Sub-solar azimuth:	321.5 degrees
For map-projected products
North azimuth:	295.2 degrees	Sub solar azimuth:	156.1 degrees

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All of the images produced by HiRISE and accessible on this site are within the public domain: there are no restrictions on their usage by anyone in the public, including news or science organizations. We do ask for a credit line where possible: Image: NASA/JPL/University of Arizona

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For information about NASA and agency programs on the Web, visit: http://www.nasa.gov. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, Calif., manages the Mars Reconnaissance Orbiter for NASA's Science Mission Directorate, Washington. Lockheed Martin Space Systems is the prime contractor for the project and built the spacecraft. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona. The image data were processed using the U.S. Geological Survey’s ISIS3 software.