Tag Archives: wind

Tornado-like winds from impacts scoured surface

Plumes of vapor generated by ancient impacts on Mars created tornado-like winds possibly swirling at more than 500 miles per hour, which explain mysterious streaks seen near large impact craters on the Martian surface. In looking at NASA images of … Continue reading

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MARCI weather report, May 8-14, 2017

Short-lived local-scale dust storms continued to sweep over the southern high-latitudes of Mars this past week. In the northern plains, a mix of water-ice clouds and transient dust storms continued along the margin of the seasonal north polar ice cap, … Continue reading

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MARCI weather report, April 24-30, 2017

Dust-lifting activity over southern Sirenum and Aonia swelled into a regional-scale dust storm this past week. The storm swept northeast to southern Argyre where it waned and stretched out towards Hellas. Meanwhile, on the other side of the red planet, … Continue reading

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MARCI weather report, April 17-23, 2017

The red planet continued to display dust-lifting and water-ice clouds along the seasonal north polar ice cap edge this past week. The plains of Chryse and western Amazonis also experienced a local-scale dust storm or two in the second half … Continue reading

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MARCI weather report, April 10-16, 2017

For the past week on Mars, local-scale dust storms continued to develop over the southern high-latitudes. During that time, small short-lived dust storms were observed moving eastward over the seasonal north polar ice cap edge, which are typical this time … Continue reading

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MARCI weather report, April 3-9, 2017

Dust-lifting activity increased over the southern high-latitudes of Mars this past week. Southern Sirenum and Aonia encountered repeated local-scale dust storms. Focusing on the northern hemisphere, long arcuate-shaped dust storms advanced over Deuteronilus and Utopia, just south of the seasonal … Continue reading

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THEMIS: Swirling dunes in Charlier Crater

THEMIS Image of the Day, April 6, 2017. This VIS image shows part of the large sand sheet with surface dune forms on the floor of Charlier Crater in Terra Sirenum. The complex pattern in the dune crests may result … Continue reading

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MARCI weather report, March 27-April 2, 2017

The weather on Mars this past week was fairly typical for this time of season. Small short-lived dust storms swept eastward along the seasonal north polar ice cap edge. Looking a bit further south, a couple of local-scale dust storms … Continue reading

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THEMIS: Sand sheet in Cimmeria crater

THEMIS Image of the Day, March 30, 2017. Today’s VIS image shows a sand sheet with surface dune forms on the floor of an unnamed crater in Terra Cimmeria. More THEMIS Images of the Day by geological topic.  

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MARCI weather report, March 20-26, 2017

Dust-lifting activity on Mars this past week was relatively uneventful compared to that of the previous weeks. Skies above Noachis continued to clear up as dust from the recent regional storm settled out of the atmosphere. Local-scale dust storms continued … Continue reading

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