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Tag Archives: snow
HiRISE: Frost-covered dunes
Frost-covered dunes. Sprinkled with hopes and dreams, no less. This is a relatively new monitoring site that seems to have heavy carbon-dioxide snowfall. HiRISE Picture of the Day archive [More at links]
Posted in Reports
Tagged CO2 frost, dunes, frost, High Resolution Imaging Science Experiment, HiPOD, HiRISE, HiRISE Picture of the Day, Mars Reconnaissance Orbiter, MRO, NASA, northern lowlands, northern plains, sand dunes, seasonal processes, snow, University of Arizona
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HiRISE: Spring frost on a cold world
Winter on Mars comes with a blanket of carbon dioxide snow. During the spring “thaw,” this snow evaporates into the atmosphere, lingering longest in the shallow depressions such as the troughs of polygon patterned ground. Enhanced color shows the carbon … Continue reading
Posted in Reports
Tagged CO2 frost, High Resolution Imaging Science Experiment, HiRISE, landing sites, Mars Phoenix, Mars Reconnaissance Orbiter, MRO, NASA, Phoenix lander, snow, University of Arizona
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Early Mars: Arid, with occasional snow or rain
[Editor’s note: From a paper by Yo Matsubara, Alan Howard, and Ross Irwin recently published in the Journal of Geophysical Research.] Constraints on the Noachian paleoclimate of the martian highlands from landscape evolution modeling Evidences show that Mars was once wetter … Continue reading
Posted in Reports
Tagged climate, climate change, Noachis Terra, rain, snow, Terra Cimmeria, valley networks
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Water-ice cliffs found in Mars’ mid-latitudes
Researchers using NASA’s Mars Reconnaissance Orbiter (MRO) have found eight sites where thick deposits of ice beneath Mars’ surface are exposed in faces of eroding slopes. These eight scarps, with slopes as steep as 55 degrees, reveal new information about … Continue reading
HiRISE: A world of snowy dunes
It is spring in the Northern hemisphere when we took this image. Over the winter, snow and ice have inexorably covered the dunes. Unlike on Earth, this snow and ice is carbon dioxide, better known to us as dry ice. … Continue reading
Posted in Reports
Tagged Beautiful Mars, CO2 frost, CO2 ice, dunes, High Resolution Imaging Science Experiment, HiRISE, ice, Mars Reconnaissance Orbiter, MRO, NASA, sand dunes, snow, University of Arizona
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Blizzards on Mars strike at night
Mars researchers have long thought that because the water content of the martian atmosphere today is so low, any clouds that form will produce only modest precipitation. For example, in 2008 the Mars Phoenix lander detected falling snow from a … Continue reading
THEMIS: Snow & ice fill crater in martian Arctic
THEMIS Image of the Day, November 30, 2016. This VIS image shows part of the north polar cap. This image is along the cap margin. The buried remnants of an impact crater are visible in the bottom half of the … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, craters, Mars Odyssey, NASA, north polar ice cap, snow, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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HiRISE: Snowy dunes on another planet
Snowy dunes on another planet. Beautiful Mars series.
Posted in Reports
Tagged Beautiful Mars, dunes, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, sand dunes, snow, University of Arizona
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Did lake-effect storms make Martian snowbelts?
Numerous places on Mars show erosion by precipitation, whether as rainfall or runoff from melting snow. The precipitation could have come from a thicker atmosphere or a temporary boost in atmospheric temperature and density following a large impact. Both scenarios … Continue reading
Posted in Reports
Tagged atmosphere, climate, Echus Chasma, Juventae Chasma, lakes, rain, snow, storms, Valles Marineris, water
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