Abstract

Mars Science Laboratory Curiosity rover observations of the 2018/Mars year 34 global/planet-encircling dust storm represent the first in situ measurements of a global dust storm with dedicated meteorological sensors since the Viking Landers. The Mars Science Laboratory team planned and executed a science campaign lasting approximately 100 Martian sols to study the storm involving an enhanced cadence of environmental monitoring using the rover's meteorological sensors, cameras, and spectrometers. Mast Camera 880-nm optical depth reached 8.5, and Rover Environmental Monitoring Station measurements indicated a 97% reduction in incident total ultraviolet solar radiation at the surface, 30K reduction in diurnal range of air temperature, and an increase in the semidiurnal pressure tide amplitude to 40 Pa. No active dust-lifting sites were detected within Gale Crater, and global and local atmospheric dynamics were drastically altered during the storm. This work presents an overview of the mission's storm observations and initial results.This work was funded by a MSL Participating Scientist grant to S. Guzewich. A portion of the research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. MSL data are freely available on the Planetary Data System within 6 months after receipt on Earth. Data used to make the figures are included in the supporting information. Mastcam and Navcam images are freely available at https://mars.nasa.gov/msl/ multimedia/raw/. We thank two anonymous reviewers for their helpful comments, which have improved this manuscrip

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oai:digital.csic.es:10261/206568Last time updated on 5/24/2020

This paper was published in Digital.CSIC.

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