Large Dust Aerosol Sizes Seen During the 2018 Martian Global Dust Event by the Curiosity Rover
Abstract Mars' atmosphere typically supports dust aerosol with an effective radius near 1.5 μm, varying from ~1 μm during low dust times near northern summer solstice to ~2 μm during higher dust times in southern spring and summer. After global dust events, size variations outside this range ha...
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| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-08-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2019GL084407 |
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| author | M. T. Lemmon S. D. Guzewich T. McConnochie A. deVicente‐Retortillo G. Martínez Michael D. Smith J. F. Bell III D. Wellington S. Jacob |
| author_facet | M. T. Lemmon S. D. Guzewich T. McConnochie A. deVicente‐Retortillo G. Martínez Michael D. Smith J. F. Bell III D. Wellington S. Jacob |
| author_sort | M. T. Lemmon |
| collection | DOAJ |
| description | Abstract Mars' atmosphere typically supports dust aerosol with an effective radius near 1.5 μm, varying from ~1 μm during low dust times near northern summer solstice to ~2 μm during higher dust times in southern spring and summer. After global dust events, size variations outside this range have not previously been observed. We report on imaging and spectral observations by the Curiosity rover through the 2018 global dust event. These observations show that the dust effective radius was seasonally normal prior to the local onset of increased opacity, increased rapidly above 4 μm with increasing opacity, remained above 3 μm over a period of ~50 Martian solar days, then returned to seasonal values before the opacity did so. This demonstrates lifting and regional‐scale transport of a dust population ~3 times the size of typical dust aerosol. |
| format | Article |
| id | doaj-art-38d356c83f804a5583b928332e7a577e |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2019-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-38d356c83f804a5583b928332e7a577e2025-08-20T02:12:20ZengWileyGeophysical Research Letters0094-82761944-80072019-08-0146169448945610.1029/2019GL084407Large Dust Aerosol Sizes Seen During the 2018 Martian Global Dust Event by the Curiosity RoverM. T. Lemmon0S. D. Guzewich1T. McConnochie2A. deVicente‐Retortillo3G. Martínez4Michael D. Smith5J. F. Bell III6D. Wellington7S. Jacob8Space Science Institute College Station TX USANASA Goddard Spaceflight Center Greenbelt MD USADepartment of Astronomy University of Maryland College Park MD USACollege of Engineering University of Michigan Ann Arbor MI USACollege of Engineering University of Michigan Ann Arbor MI USANASA Goddard Spaceflight Center Greenbelt MD USASchool of Earth and Space Exploration Arizona State University Tempe AZ USASchool of Earth and Space Exploration Arizona State University Tempe AZ USASchool of Earth and Space Exploration Arizona State University Tempe AZ USAAbstract Mars' atmosphere typically supports dust aerosol with an effective radius near 1.5 μm, varying from ~1 μm during low dust times near northern summer solstice to ~2 μm during higher dust times in southern spring and summer. After global dust events, size variations outside this range have not previously been observed. We report on imaging and spectral observations by the Curiosity rover through the 2018 global dust event. These observations show that the dust effective radius was seasonally normal prior to the local onset of increased opacity, increased rapidly above 4 μm with increasing opacity, remained above 3 μm over a period of ~50 Martian solar days, then returned to seasonal values before the opacity did so. This demonstrates lifting and regional‐scale transport of a dust population ~3 times the size of typical dust aerosol.https://doi.org/10.1029/2019GL084407Marsdustatmosphereaerosol |
| spellingShingle | M. T. Lemmon S. D. Guzewich T. McConnochie A. deVicente‐Retortillo G. Martínez Michael D. Smith J. F. Bell III D. Wellington S. Jacob Large Dust Aerosol Sizes Seen During the 2018 Martian Global Dust Event by the Curiosity Rover Geophysical Research Letters Mars dust atmosphere aerosol |
| title | Large Dust Aerosol Sizes Seen During the 2018 Martian Global Dust Event by the Curiosity Rover |
| title_full | Large Dust Aerosol Sizes Seen During the 2018 Martian Global Dust Event by the Curiosity Rover |
| title_fullStr | Large Dust Aerosol Sizes Seen During the 2018 Martian Global Dust Event by the Curiosity Rover |
| title_full_unstemmed | Large Dust Aerosol Sizes Seen During the 2018 Martian Global Dust Event by the Curiosity Rover |
| title_short | Large Dust Aerosol Sizes Seen During the 2018 Martian Global Dust Event by the Curiosity Rover |
| title_sort | large dust aerosol sizes seen during the 2018 martian global dust event by the curiosity rover |
| topic | Mars dust atmosphere aerosol |
| url | https://doi.org/10.1029/2019GL084407 |
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