TY - JOUR
T1 - Mars's Twilight Cloud Band
T2 - A New Cloud Feature Seen During the Mars Year 34 Global Dust Storm
AU - Connour, Kyle
AU - Schneider, Nicholas M.
AU - Milby, Zachariah
AU - Forget, François
AU - Alhosani, Mohamed
AU - Spiga, Aymeric
AU - Millour, Ehouarn
AU - Lefèvre, Franck
AU - Deighan, Justin
AU - Jain, Sonal K.
AU - Wolff, Michael J.
N1 - Publisher Copyright:
©2019. American Geophysical Union. All Rights Reserved.
PY - 2020/1/16
Y1 - 2020/1/16
N2 - We report a new water-ice cloud feature observed during the Mars year 34 global dust storm: twilight cloud bands that routinely formed just past the evening terminator. We use images taken by the MAVEN/IUVS instrument. These bands were often latitudinally continuous, spanning over 6,000 km and were present between 18:00 and 19:00 local time. They were present for nearly the entire time IUVS imaged the evening terminator and often reached altitudes of at least 40 to 50 km during the mature phase of the storm. We compare these observations to LMD global climate model simulations. The simulations generally contain the temporal and spatial extents of the bands seen in IUVS data throughout the storm, but there are some discrepancies. We infer that these clouds formed as a result of semidiurnal thermal tides.
AB - We report a new water-ice cloud feature observed during the Mars year 34 global dust storm: twilight cloud bands that routinely formed just past the evening terminator. We use images taken by the MAVEN/IUVS instrument. These bands were often latitudinally continuous, spanning over 6,000 km and were present between 18:00 and 19:00 local time. They were present for nearly the entire time IUVS imaged the evening terminator and often reached altitudes of at least 40 to 50 km during the mature phase of the storm. We compare these observations to LMD global climate model simulations. The simulations generally contain the temporal and spatial extents of the bands seen in IUVS data throughout the storm, but there are some discrepancies. We infer that these clouds formed as a result of semidiurnal thermal tides.
U2 - 10.1029/2019GL084997
DO - 10.1029/2019GL084997
M3 - Article
AN - SCOPUS:85078280757
SN - 0094-8276
VL - 47
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 1
M1 - e2019GL084997
ER -
