<p>In a recently published paper, we reported the existence and properties of the Arsia Mons Elongated Cloud (AMEC; Hern&#225;ndez-Bernal et al., 2021). We are now exploring models for the theoretical understanding of this outstanding phenomenon.</p>
<p>The AMEC forms at sunrise over the western slope of the Arsia Mons volcano, and for ~3 hours expands to the west following zonal winds, leaving behind a characteristic white bright tail. This process repeats in a daily cycle for a long season around the southern solstice. According to observations in MY34, the AMEC reaches a length of up to 1800 km, and expands at a velocity of around 170 m/s (~130 m/s in other years) at ~45 km in altitude. In comparison, winds predicted by the Global Circulation Model LMD-MCD are ~60m/s (Millour et al. 2018).</p>
<p>The cloud is clearly driven by upward winds forced by the topography of the volcano. We are analysing from the theoretical perspective the formation and particular features of this cloud.</p>
<p><strong>References</strong></p>
<p>Hern&#225;ndez&#8208;Bernal, J., S&#225;nchez&#8208;Lavega, A., del R&#237;o&#8208;Gaztelurrutia, T., Ravanis, E., Cardes&#237;n&#8208;Moinelo, A., Connour, K., ... & Hauber, E. (2021). An extremely elongated cloud over Arsia Mons volcano on Mars: I. Life cycle. <em>Journal of Geophysical Research: Planets</em>, <em>126</em>(3), e2020JE006517.</p>
<p>Millour, E., F. Forget,A. Spiga, et al.&#160; "Mars climate database. (Version 5.3)" From Mars Express to ExoMars (2018)</p>