Posted on November 1, 2018February 1, 2019 © 2022 by Linda Moulton HoweMars: Why It’s A Strange Cloud and Not Volcano Smoke. ESA Press Release September 13, 2018: "Since 13 September, ESA’s Mars Express has been observing the evolution of an elongated cloud formation hovering in the vicinity of the 20 km-high Arsia Mons volcano, close to the planet’s equator. In spite of its location, this atmospheric feature is not linked to volcanic activity but is rather a water ice cloud driven by the influence of the volcano’s leeward slope on the air flow – something that scientists call an orographic or lee cloud – and a regular phenomenon in this region." Image by European Space Agency/GCP/UPV/EHU Bilbao. Click here to subscribe and get instant access to read this report. Click here to check your existing subscription status. Existing members, login below: Username or E-mail Password Remember Me Forgot Password Login © 1998 - 2022 by Linda Moulton Howe.All Rights Reserved.