Mars Observers Should Continue to Record Changes in the North Polar Cap.
Many Clouds and North Polar Cap Activity Recorded in Early March as Ice is Transferred from Northern Polar Regions to Southern Polar Regions.
Stunning wide black stripe imaged on Jan. 6th, 2014 that lengthened through March 3rd as a narrower black stripe as the NPC ice continued to shrink uncovering a very dark surface.
Below is a cutaway of a map of the North Polar Cap at Ls = 90 by Chick Capen made from 1969 observations. See the dark figure extending into the NPC at longitude 60 degrees West that is in the same orientation as in the images. The map also shows Mare Boreum and Mare Acidalium to the South of the NPC exactly as shown in the images.
Images showing movements of dust clouds on or near the
North Polar Cap and a deep Low-pressure center and its
attendant circular shaped dust storm
Images showing dark ring of sand dunes on North Polar Cap