Tag Archives: atmosphere

MARCI weather report, March 25-31, 2019

For the past week on Mars, transient dust storms and water ice clouds continued to develop along the seasonal north polar ice cap edge. Just a bit further south, a couple fleeting dust storms were spotted extending southward across Acidalia … Continue reading

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MARCI weather report, March 18-24, 2019

Northern hemisphere spring arrived along with southern hemisphere autumn this past week on Mars. Southern Aonia experienced dusty conditions as repeated dust-lifting activity continued in the 60° south latitude band. Moving our attention towards the low-latitudes, a stronger presence of … Continue reading

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MARCI weather report, March 11-17, 2019

Last week on Mars, dust-lifting events continued over southern Aonia and Sirenum. The eastward movement of these storms lofted dust into the Argyre impact basin on multiple sols. The Hellas impact basin, on the other hand, was largely unobscured from … Continue reading

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MARCI weather report, March 4-10, 2019

Dust-lifting activity continued in localized regions in both the northern and southern hemispheres of Mars this past week. Looking to the ancient southern highlands, local-scale dust storms propagated eastward from Sirenum to Aonia. Southern Noachis Terra also encountered a few … Continue reading

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MAVEN: High solar wind pressure hastens loss of atmosphere

New MAVEN research shows that high solar wind pressure influences Mars’ magnetic fields in ways that can increase the global loss of atmosphere to space. Planetary atmospheres are constantly bombarded by energy and radiation from the Sun, and over time … Continue reading

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MAVEN: Aerobraking to lower the orbit

The MAVEN spacecraft today [March 7] performed an aerobraking maneuver (with a 0.2 m/s ∆V) to decrease the periapsis, or lowest, altitude by 1.2 km. MAVEN’s periapsis altitude is now 125.5 km above the surface of Mars and the apoapsis, … Continue reading

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MARCI weather report, Feb 25-March 3, 2019

Last week on Mars, the southern highlands experienced an uptick in local-scale dust storm activity. Meanwhile, on the other side of the red planet, a mixture of dust storms and water ice clouds continued to propagate eastward along the seasonal … Continue reading

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MARCI weather report, February 18-24, 2019

For the past week on Mars, dust storms and water ice clouds continued to crop up along the edge of the seasonal north polar ice cap. The plains of Amazonis, Chryse, and Utopia also experienced some local-scale dust lifting as … Continue reading

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MARCI weather report, February 11-17, 2019

Martian weather patterns were fairly typical for this time of season, this past week. Local-scale dust storms pushed eastward along the margins of the seasonal north polar cap. A couple of these storms pushed southward across Acidalia near the beginning … Continue reading

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MARCI weather report, February 4-10, 2019.

Dust storm activity was at a minimum across the tropics and southern highlands of Mars last week. Local storms were observed along the seasonal north polar cap edge, while the polar vortex showed a wave-2 type structure, typical this time … Continue reading

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