Tag Archives: dust

MARCI weather report, August 5-11, 2019

During the past week on Mars, transient dust storms were observed along the edge of the south polar hood in Sirenum and Aonia. While in the northern hemisphere, storms developed along the seasonal cap edge, with one arcuate-shaped storm propagating … Continue reading

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Mars Express: Dark meets light in Terra Cimmeria

ESA’s Mars Express has captured the cosmic contrast of Terra Cimmeria, a region in the southern highlands of Mars marked by impact craters, water-carved valleys, and sand and dust in numerous chocolate and caramel hues. Mars is often referred to … Continue reading

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Daedalia Planum flows combine dusty surfaces and exposed lava outcrops

[Editor’s note: From a paper by Christine Simurda and two co-authors recently published in the Journal of Geophysical Research.] The Unusual Thermophysical and Surface Properties of the Daedalia Planum Lava Flows • Unusual thermophysical variations are present on lava flows … Continue reading

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MARCI weather report, July 15-21, 2019

For the past week on Mars, small sporadic dust storms continued along the south polar hood. Dust activity was also observed a bit further north over Solis Planum, central Cimmeria, and just south of eastern Valles Marineris. Looking to the … Continue reading

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MARCI weather report, July 8-14, 2019

Dust-lifting occurred northwest of Argyre at the beginning of the week, giving rise to dusty conditions over eastern Valles Marineris for several afternoons. Looking eastward across the southern highlands, numerous small short-lived dust events were observed over Terra Cimmeria. The … Continue reading

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MARCI weather report, July 1-7, 2019

Dust storm activity picked-up over the northern lowlands of Mars this past week. Near the middle of the week, long arcuate-shaped dust storms propagated eastward across the plains of Acidalia. Subsequent dust events swept northward over the perennial north polar … Continue reading

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MARCI weather report, June 24-30, 2019

There was a slight uptick in frequency of dust-lifting events over the southern hemisphere of Mars this past week. Dust storms north of Argyre were once again advected equatorwards — this time extending past eastern Valles Marineris to Xanthe Terra. … Continue reading

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North polar layered deposits vary strongly in dust and composition

[Editor’s note: From a paper by Daniel Lalich and two co-authors recently published in the Journal of Geophysical Research.] Radar Reflectivity as a Proxy for the Dust Content of Individual Layers in the Martian North Polar Layered Deposits • Radar … Continue reading

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MARCI weather report, June 17-23, 2019

With the exception of a single arcuate-shaped dust storm, similar in morphology to a terrestrial low-pressure systems, which was dipping southward across Acidalia, the northern lowlands were relatively uneventful this past week. In the southern hemisphere, a dust storm north … Continue reading

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MARCI weather report, June 10-16, 2019

The regional dust storm noted in the previous week’s report had abated by the beginning of this past week, with only a remnant dust haze visible around Olympus Mons for a couple additional sols. Conditions along the edge of the … Continue reading

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