Daily dust variation from the PFS MEx observations
We collected over 7 Martian years (MY) of data observed by the Planetary Fourier Spectrometer (PFS) to present a daily variation of dust content in the Martian atmosphere. We found three typical behaviors of dust opacities with LT (local time). The most peculiar variation was observed when global du...
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ftinstnastrofisi:oai:openaccess.inaf.it:20.500.12386/32291 2023-05-15T18:22:55+02:00 Daily dust variation from the PFS MEx observations WOLKENBERG, PAULINA MARIA GIURANNA, Marco ITA 2021 https://hdl.handle.net/20.500.12386/32291 https://doi.org/10.1016/j.icarus.2020.113823 https://www.sciencedirect.com/science/article/pii/S0019103520302050?via%3Dihub https://api.elsevier.com/content/abstract/scopus_id/85084393356 en eng ICARUS 0019-1035 http://hdl.handle.net/20.500.12386/32291 doi:10.1016/j.icarus.2020.113823 2-s2.0-85084393356 https://www.sciencedirect.com/science/article/pii/S0019103520302050?via%3Dihub https://api.elsevier.com/content/abstract/scopus_id/85084393356 open Article 2021 ftinstnastrofisi https://doi.org/20.500.12386/32291 https://doi.org/10.1016/j.icarus.2020.113823 2022-07-06T16:01:06Z We collected over 7 Martian years (MY) of data observed by the Planetary Fourier Spectrometer (PFS) to present a daily variation of dust content in the Martian atmosphere. We found three typical behaviors of dust opacities with LT (local time). The most peculiar variation was observed when global dust storms (MYs 28 and 34) or particularly strong regional storms (MY 29) occurred on Mars. Here, large dust opacities were measured at 10 LT (MY 34) and 11 LT (MY 28). Then, relatively small values of dust opacities were found in the evening (20 LT). The non-dusty season, particularly near northern summer solstice, was characterized by a deep minimum of the total dust opacity at late night/early morning, while small variations around the mean value were observed during daytime. The clear trend of dust was observed over both hemispheres during early morning. We noted elevated dust opacities in the second half of the year compared to the non-dusty season in all Martian years without global dust storms. The daily variation of three types of storms occurring in moderately dusty conditions was also investigated. Dust in A storms was present in the atmosphere at all LTs and was mostly confined to the southern hemisphere. The maximum of dust opacities in B storms was found at 15–17 LT, close to the South Pole. C storms were mainly constrained to southern latitudes and occurred from the late morning to midday. Article in Journal/Newspaper South pole OA@INAF (Istituto Nazionale di Astrofisica) South Pole |
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English |
description |
We collected over 7 Martian years (MY) of data observed by the Planetary Fourier Spectrometer (PFS) to present a daily variation of dust content in the Martian atmosphere. We found three typical behaviors of dust opacities with LT (local time). The most peculiar variation was observed when global dust storms (MYs 28 and 34) or particularly strong regional storms (MY 29) occurred on Mars. Here, large dust opacities were measured at 10 LT (MY 34) and 11 LT (MY 28). Then, relatively small values of dust opacities were found in the evening (20 LT). The non-dusty season, particularly near northern summer solstice, was characterized by a deep minimum of the total dust opacity at late night/early morning, while small variations around the mean value were observed during daytime. The clear trend of dust was observed over both hemispheres during early morning. We noted elevated dust opacities in the second half of the year compared to the non-dusty season in all Martian years without global dust storms. The daily variation of three types of storms occurring in moderately dusty conditions was also investigated. Dust in A storms was present in the atmosphere at all LTs and was mostly confined to the southern hemisphere. The maximum of dust opacities in B storms was found at 15–17 LT, close to the South Pole. C storms were mainly constrained to southern latitudes and occurred from the late morning to midday. |
author2 |
ITA |
format |
Article in Journal/Newspaper |
author |
WOLKENBERG, PAULINA MARIA GIURANNA, Marco |
spellingShingle |
WOLKENBERG, PAULINA MARIA GIURANNA, Marco Daily dust variation from the PFS MEx observations |
author_facet |
WOLKENBERG, PAULINA MARIA GIURANNA, Marco |
author_sort |
WOLKENBERG, PAULINA MARIA |
title |
Daily dust variation from the PFS MEx observations |
title_short |
Daily dust variation from the PFS MEx observations |
title_full |
Daily dust variation from the PFS MEx observations |
title_fullStr |
Daily dust variation from the PFS MEx observations |
title_full_unstemmed |
Daily dust variation from the PFS MEx observations |
title_sort |
daily dust variation from the pfs mex observations |
publishDate |
2021 |
url |
https://hdl.handle.net/20.500.12386/32291 https://doi.org/10.1016/j.icarus.2020.113823 https://www.sciencedirect.com/science/article/pii/S0019103520302050?via%3Dihub https://api.elsevier.com/content/abstract/scopus_id/85084393356 |
geographic |
South Pole |
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South Pole |
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South pole |
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South pole |
op_relation |
ICARUS 0019-1035 http://hdl.handle.net/20.500.12386/32291 doi:10.1016/j.icarus.2020.113823 2-s2.0-85084393356 https://www.sciencedirect.com/science/article/pii/S0019103520302050?via%3Dihub https://api.elsevier.com/content/abstract/scopus_id/85084393356 |
op_rights |
open |
op_doi |
https://doi.org/20.500.12386/32291 https://doi.org/10.1016/j.icarus.2020.113823 |
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1766202333540122624 |