MARCI weather report, September 4-10, 2017

MARCI-September-7-2017During the past week, the seasonal north polar cap edge had retreated to about 67 degrees north latitude. Water vapor released from the north polar cap was transported southward by the general circulation to the northern tropics, where it formed into clouds as part of the devloping aphelion (equatorial) cloud belt. Water ice clouds were also observed over the major shield volcanoes and in the southern mid-latitudes. Hellas and Argyre remained rather hazy due to these clouds. A number of local dust storms were observed west of Argyre basin and more sporadically throughout the rest of the southern mid-latitudes. Arculate shaped storms were along the north polar cap edge… [More at link, including video]

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