Planet‐Wide Ozone Destruction in the Middle Atmosphere on Mars During Global Dust Storm

Autor: Daerden, F., Neary, L., Wolff, M. J., Clancy, R. T., Lefèvre, F., Whiteway, J. A., Viscardy, S., Piccialli, A., Willame, Y., Depiesse, C., Aoki, S., Thomas, I. R., Ristic, B., Erwin, J., Gérard, J.‐C., Sandor, B. J., Khayat, A., Smith, M. D., Mason, J. P., Patel, M. R., Villanueva, G. L., Liuzzi, G., Bellucci, G., Lopez‐Moreno, J.‐J., Vandaele, A. C.
Přispěvatelé: Ministerio de Ciencia e Innovación (España), European Commission, Belgian Science Policy Office, UK Space Agency
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Digital.CSIC. Repositorio Institucional del CSIC
instname
Geophys. Res. Letters
ISSN: 1944-8007
Popis: This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
The Nadir and Occultation for MArs Discovery (NOMAD)/UV-visible (UVIS) spectrometer on the ExoMars Trace Gas Orbiter provided observations of ozone (O3) and water vapor in the global dust storm of 2018. Here we show in detail, using advanced data filtering and chemical modeling, how Martian O3 in the middle atmosphere was destroyed during the dust storm. In data taken exactly 1 year later when no dust storm occurred, the normal situation had been reestablished. The model simulates how water vapor is transported to high altitudes and latitudes in the storm, where it photolyzes to form odd hydrogen species that catalyze O3. O3 destruction is simulated at all latitudes and up to 100 km, except near the surface where it increases. The simulations also predict a strong increase in the photochemical production of atomic hydrogen in the middle atmosphere, consistent with the enhanced hydrogen escape observed in the upper atmosphere during global dust storms. © 2022 The Authors.
This work was made possible thanks to the reconstructed gridded maps of column dust optical depth from Mars Climate Sounder observations provided by L. Montabone. The dust maps were prepared using MCS v5.3 provided by A. Kleinböhl and D. Kass. Dust climatologies can be found at the following link: http://www-mars.lmd.jussieu.fr/mars/dust_climatology/. ExoMars is a space mission of the European Space Agency (ESA) and Roscosmos. The NOMAD experiment is led by the Royal Belgian Institute for Space Aeronomy (IASB-BIRA), assisted by Co-PI teams from Spain (IAA-CSIC), Italy (INAF-IAPS), and the United Kingdom (Open University). This project acknowledges funding by the Belgian Science Policy Office (BELSPO), with the financial and contractual coordination by the ESA Prodex Office (PEA 4000103401, 4000121493), by the UK Space Agency (grants ST/V002295/1, ST/P001262/1, ST/V005332/1 and ST/S00145X/1), by the Spanish Ministry of Science and Innovation (MCIU), and by European funds (grants PGC2018-101836-B-I00 and ESP2017-87143-R, MINECO/FEDER), as well as by the Italian Space Agency (Grant 2018-2-HH.0). This work was supported by the Belgian Fonds de la Recherche Scientifique – FNRS (Grant Nos. 30442502, ET_HOME). This work has received funding from the European Union's Horizon 2020 research and innovation programme (grant agreement No 101004052, RoadMap project). The IAA/CSIC team acknowledges financial support from the State Agency for Research of the Spanish MCIU through the “Center of Excellence Severo Ochoa” award for the Instituto de Astrofísica de Andalucía (SEV-2017-0709). US investigators were supported by the National Aeronautics and Space Administration, by NASA's Mars Program Office (under WBS 604796, “Participation in the TGO/NOMAD Investigation of Trace Gases on Mars.”), and by NASA (award number 80GSFC21M0002). Canadian investigators were supported by the Canadian Space Agency.
Databáze: OpenAIRE
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