Spring Frost on a Cold World
NASA/JPL/University of Arizona
Spring Frost on a Cold World
PSP_007448_2475  Science Theme: Future Exploration/Landing Sites
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Winter on Mars comes with a blanket of carbon dioxide snow. During the spring “thaw,” this snow evaporates into the atmosphere, lingering longest in the shallow depressions such as the troughs of polygon patterned ground.

Enhanced color shows the carbon dioxide snow as bluish-white patches among areas of rusty red bare ground. We took this image in 2008 as a possible landing site for the Phoenix Lander that arrived on Mars later that same year.

Written by: Mike Mellon  (26 November 2018)
 
Acquisition date
27 February 2008

Local Mars time:
14:21

Latitude (centered)
67.380°

Longitude (East)
131.667°

Spacecraft altitude
318.5 km (199.1 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
Polarstereographic

Emission angle:
5.0°

Phase angle:
61.1°

Solar incidence angle
57°, with the Sun about 33° above the horizon

Solar longitude
37.9°, Northern Spring

For non-map projected images
North azimuth:  100°
Sub-solar azimuth:  319.8°
JPEG
Black and white
map projected  non-map

IRB color
map projected  non-map

Merged IRB
map projected

Merged RGB
map projected

RGB color
non-map projected

JP2
Black and white
map-projected   (1895MB)

IRB color
map-projected   (771MB)

JP2 EXTRAS
Black and white
map-projected  (1169MB)
non-map           (816MB)

IRB color
map projected  (371MB)
non-map           (606MB)

Merged IRB
map projected  (508MB)

Merged RGB
map-projected  (465MB)

RGB color
non map           (525MB)
ADDITIONAL INFORMATION
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products
HiView

NB
IRB: infrared-red-blue
RGB: red-green-blue
About color products (PDF)

Black & white is 5 km across; enhanced color about 1 km
For scale, use JPEG/JP2 black & white map-projected images

USAGE POLICY
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:
NASA/JPL/University of Arizona

POSTSCRIPT
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. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona.