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  Martian dust storm impact on atmospheric H2O and D/H observed by ExoMars Trace Gas Orbiter

Vandaele, A. C., Korablev, O., Daerden, F., Aoki, S., Thomas, I. R., Altieri, F., et al. (2019). Martian dust storm impact on atmospheric H2O and D/H observed by ExoMars Trace Gas Orbiter. Nature, 568, 521-525. doi:10.1038/s41586-019-1097-3.

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Vandaele, Ann Carine, Author
Korablev, Oleg, Author
Daerden, Frank, Author
Aoki, Shohei, Author
Thomas, Ian R., Author
Altieri, Francesca, Author
López-Valverde, Miguel, Author
Villanueva, Geronimo, Author
Liuzzi, Giuliano, Author
Smith, Michael D., Author
Erwin, Justin T., Author
Trompet, Loïc, Author
Fedorova, Anna A., Author
Montmessin, Franck, Author
Trokhimovskiy, Alexander, Author
Belyaev, Denis A., Author
Ignatiev, Nikolay I., Author
Luginin, Mikhail, Author
Olsen, Kevin S., Author
Baggio, Lucio, Author
Alday, Juan, AuthorBertaux, Jean-Loup, AuthorBetsis, Daria, AuthorBolsée, David, AuthorClancy, R. Todd, AuthorCloutis, Edward, AuthorDepiesse, Cédric, AuthorFunke, Bernd, AuthorGarcia-Comas, Maia, AuthorGérard, Jean-Claude, AuthorGiuranna, Marco, AuthorGonzalez-Galindo, Francisco, AuthorGrigoriev, Alexey V., AuthorIvanov, Yuriy S., AuthorKaminski, Jacek, AuthorKaratekin, Ozgur, AuthorLefèvre, Franck, AuthorLewis, Stephen, AuthorLópez-Puertas, Manuel, AuthorMahieux, Arnaud, AuthorMaslov, Igor, AuthorMason, Jon, AuthorMumma, Michael J., AuthorNeary, Lori, AuthorNeefs, Eddy, AuthorPatrakeev, Andrey, AuthorPatsaev, Dmitry, AuthorRistic, Bojan, AuthorRobert, Séverine, AuthorSchmidt, Frédéric, AuthorShakun, Alexey, AuthorTeanby, Nicholas A., AuthorViscardy, Sébastien, AuthorWillame, Yannick, AuthorWhiteway, James, AuthorWilquet, Valérie, AuthorWolff, Michael J., AuthorBellucci, Giancarlo, AuthorPatel, Manish R., AuthorLópez-Moreno, Jose-Juan, AuthorForget, François, AuthorWilson, Colin F., AuthorSvedhem, Håkan, AuthorVago, Jorge L., AuthorRodionov, Daniel, AuthorNOMAD Science Team, Author              Alday, Juan, AuthorAltieri, Francesca, AuthorAnufreychik, Konstantin, AuthorArnold, Gabriele, AuthorBaggio, Lucio, AuthorBelyaev, Denis A., AuthorBertaux, Jean-Loup, AuthorDuxbury, Natalia, AuthorFedorova, Anna A., AuthorForget, François, AuthorFouchet, Thierry, AuthorGrassi, Davide, AuthorGrigoriev, Alexey V., AuthorGuerlet, Sandrine, AuthorHartogh, Paul1, Author              Ignatiev, Nikolay I., AuthorKasaba, Yasumasa, AuthorKhatuntsev, Igor, AuthorKokonkov, Nikita, AuthorKorablev, Oleg, AuthorKrasnopolsky, Vladimir, AuthorKuzmin, Ruslan, AuthorLacombe, Gaétan, AuthorLefèvre, Franck, AuthorLellouch, Emmanuel, AuthorLópez-Valverde, Miguel, AuthorMaslov, Igor, AuthorLuginin, Mikhail, AuthorMäättänen, Anni, AuthorMarcq, Emmanuel, AuthorMartin-Torres, Javier, AuthorMedvedev, Alexander, AuthorMillour, Ehouarn, AuthorMontmessin, Franck, AuthorMoshkin, Boris, AuthorOlsen, Kevin S., AuthorPatel, Manish R., AuthorPatrakeev, Andrey, AuthorPatsaev, Dmitry, AuthorQuantin-Nataf, Cathy, AuthorRodionov, Daniel, AuthorRodin, Alexander, AuthorShakun, Alexey, AuthorShematovich, Valery, AuthorThomas, Ian R., AuthorThomas, Nicolas, AuthorTrokhimovsky, Alexander, AuthorVazquez, Luis, AuthorVincendon, Matthieu, AuthorWilquet, Valérie, AuthorWilson, Colin F., AuthorYoung, Roland, AuthorZasova, Ludmila, AuthorZorzano, Lev Zelenyi , AuthorPaz, Maria, Author more..
1Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society, Justus-von-Liebig-Weg 3, 37077 Göttingen, DE, ou_1832288              


Free keywords: -
 Abstract: Global dust storms on Mars are rare1,2 but can affect the Martian atmosphere for several months. They can cause changes in atmospheric dynamics and inflation of the atmosphere3, primarily owing to solar heating of the dust3. In turn, changes in atmospheric dynamics can affect the distribution of atmospheric water vapour, with potential implications for the atmospheric photochemistry and climate on Mars4. Recent observations of the water vapour abundance in the Martian atmosphere during dust storm conditions revealed a high-altitude increase in atmospheric water vapour that was more pronounced at high northern latitudes5,6, as well as a decrease in the water column at low latitudes7,8. Here we present concurrent, high-resolution measurements of dust, water and semiheavy water (HDO) at the onset of a global dust storm, obtained by the NOMAD and ACS instruments onboard the ExoMars Trace Gas Orbiter. We report the vertical distribution of the HDO/H2O ratio (D/H) from the planetary boundary layer up to an altitude of 80 kilometres. Our findings suggest that before the onset of the dust storm, HDO abundances were reduced to levels below detectability at altitudes above 40 kilometres. This decrease in HDO coincided with the presence of water-ice clouds. During the storm, an increase in the abundance of H2O and HDO was observed at altitudes between 40 and 80 kilometres. We propose that these increased abundances may be the result of warmer temperatures during the dust storm causing stronger atmospheric circulation and preventing ice cloud formation, which may confine water vapour to lower altitudes through gravitational fall and subsequent sublimation of ice crystals3. The observed changes in H2O and HDO abundance occurred within a few days during the development of the dust storm, suggesting a fast impact of dust storms on the Martian atmosphere.


Language(s): eng - English
 Dates: 2019
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1038/s41586-019-1097-3
 Degree: -



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Title: Nature
  Abbreviation : Nature
Source Genre: Journal
Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 568 Sequence Number: - Start / End Page: 521 - 525 Identifier: ISSN: 0028-0836
CoNE: https://pure.mpg.de/cone/journals/resource/954925427238