The purpose of this sequence of images is to understand rapid albedo (brightness) changes seen at this time of year (late northern summer) on the Martian polar cap.

Our cutout is an animation that is a comparison with an image acquired just 5 days earlier from this one. Changes in relative brightness are apparent between the observations. It is not immediately obvious what is causing the changes, but the linear patterns
suggest that wind is playing a role.

ID: ESP_072594_2675
date: 20 January 2022
altitude: 316 km

https://uahirise.org/hipod/ESP_072594_2675
NASA/JPL-Caltech/University of Arizona
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