Tag Archives: clouds

Mars’ water-ice clouds thicken toward evening

[Editor’s note: From a paper by Michael Smith recently published in Icarus.] Local time variation of water ice clouds on Mars as observed by THEMIS • The local time variation of cloud optical depth is examined from THEMIS observations. • … Continue reading

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MARCI weather report, June 3-9, 2019

Last week on Mars, dust storm activity continued along the edge of the receding seasonal north polar ice cap. Near the beginning of the week, a regional-scale dust storm occurred over the eastern Arcadia region and spread both southward to … Continue reading

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MARCI weather report, May 27-June 2, 2019

There was a slight uptick in dust activity this past week on Mars. The week began with a couple of arcuate-shaped dust storms extending over the retreating seasonal north polar ice cap in Acidalia and Arcadia. Looking to the southern … Continue reading

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Curiosity update: A many-layered plan

Sols 2427-28, June 5, 2019, update by MSL scientist Claire Newman: The main focus of today’s plan was observations of the interbedded thick and thin layers we found at Woodland Bay before we drive away again, perhaps as early as … Continue reading

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Curiosity catches clouds, and a cache of clay

NASA’s Curiosity rover has confirmed that the region on Mars it’s exploring, called the “clay-bearing unit,” is well deserving of its name. Two samples the rover recently drilled at rock targets called “Aberlady” and “Kilmarie” have revealed the highest amounts … Continue reading

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MARCI weather report, May 20-26, 2019

Last week on Mars, water ice clouds and small dust-lifting events continued to be observed along the retreating seasonal north polar ice cap edge. Near the end of the week, larger pulses of dust activity were spotted over the plains … Continue reading

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MARCI weather report, May 13-19, 2019

Afternoon condensate water-ice clouds continued to be the dominant feature over all the major Martian volcanoes this past week. A few arcuate dust storms were observed along the edge of the seasonal north polar ice cap. On the other side … Continue reading

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MARCI weather report, May 6-12, 2019

We are now well into northern spring, and dust storm activity is picking up in the northern hemisphere. Numerous dust storms were observed near the seasonal north polar cap edge (presently ~60° N) throughout the past week. Several of these … Continue reading

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MARCI weather report, April 22-28, 2019

For the past week on Mars, numerous local-scale dust storms of varied size occurred along the southern highlands — below 50° S. latitude. Looking to the northern hemisphere, dust-lifting activity was more sporadic. A couple of arcuate (bow-shaped) dust storms … Continue reading

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MARCI weather report, April 15-21, 2019

Conditions poleward of 58° S were dusty as local storms continued to crop-up along the mid- to high-latitudes of Mars last week. Looking to the northern lowlands, a couple of long arcuate-shaped dust storms pressed southward over Acidalia near the … Continue reading

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