The Bruce Murray Space Image Library
Mars polar vortex from MARCI
Filed under pretty pictures, atmospheres, Mars, Mars Reconnaissance Orbiter
This is a MARCI color mosaic of the north polar region of Mars from 40-90 degrees North, 0-360 degrees West, generated from data taken on October 22, 2012 (Ls = 192.8), early-autumn in the northern hemisphere. The black star shape in the center is the boundary of the terminator ("polar night"). The whitish areas are water-ice clouds. The diffuse ice clouds in the north polar region are part of the north polar hood that is a steady feature at this time of the Martian year. The polar hood has an egg-shaped structure. The clouds of the hood help denote the southern boundary of the polar vortex, which extends as far south as 49 degrees latitude.
NASA / JPL / MSSS
This is a polar stereographic projection (west longitude increasing in a clockwise direction from the bottom of the image).
Original image data dated on or about October 22, 2012.
Most NASA images are in the public domain. Reuse of this image is governed by NASA's image use policy.
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