Sub‐Hourly Observations of Dust Storm Growth, Lee Waves, and Lyot Crater, by the EMM Camera EXI

Author:

Gebhardt C.12ORCID,Guha B. K.2ORCID,Young R. M. B.12ORCID,Wolff M. J.3ORCID,Edwards C. S.4ORCID

Affiliation:

1. Department of Physics College of Science United Arab Emirates University Al Ain United Arab Emirates

2. National Space Science and Technology Center United Arab Emirates University Al Ain United Arab Emirates

3. Space Science Institute Boulder CO USA

4. Department of Astronomy and Planetary Science Northern Arizona University Flagstaff AZ USA

Abstract

AbstractWe explore a sequence of 13 unique high‐cadence images of a dust storm, from the Emirates Mars Mission (EMM). The Emirates eXploration Imager camera took these images in less than 8 hr on 18 December 2022 (Martian Year 36, solar longitude 356°). Most of these images are separated by a time difference of half an hour. The region of interest extends from Lyot crater to the east. During the morning, the EMM images show lee waves (atmospheric gravity waves). In the late morning, the lee waves rapidly change into clearly distinct dust storm texture/convective features. We track the evolution of both lee waves and a local dust storm between sunrise and mid‐afternoon. Also, we relate our observations to atmospheric dynamics. Our analysis is supported by the Mars Climate Database and radio occultation measurement data.

Funder

United Arab Emirates University

Publisher

American Geophysical Union (AGU)

Subject

General Earth and Planetary Sciences,Geophysics

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