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IMP and the Atmosphere: Clouds over Ares Vallis 
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clouds1.JPG
The first color IMP image of an overcast sky above Ares Vallis. Taken on Sol 16, approximately one hour and forty minutes before sunrise.  The image was originally released in false color (below).  We think of the Martian sky as being red, but early in the morning water ice clouds are lit by the sun without much interference from the dusty sky, leaving us with a grayish blue tinted sky.
82381t.gif
 
83616t.gif
Sol 15 Water ice clouds in the early morning sky.
82456t.gif Sol 16, one hour and forty minutes before sunrise This image was taken in an attempt to image the Earth from Mars, but the view was blocked by unexpected clouds. Click to see a larger image.
82453t.gif Sol 16 forty minutes before sunrise
83621t.gif Sol 39, one hour and twenty minutes before sunrise
83617t.gif Sol 39, forty minutes before sunrise.  These water ice  clouds are about 10 to 15 km above the surface.
83624t.gif Sol 39, thirty five minutes before sunrise  the blue water ice clouds in the image are probably about 10 to 15 km above the surface of Mars, and are only seen in the morning.
clouds_at_sunset_xs.jpg
Sol 20 
Sky Image Archive Sun and Moons Clouds Sunset Sunrise

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