Martian dust storm impact on atmospheric H 2 O and D/H observed by ExoMars Trace Gas Orbiter.

Autor: Vandaele AC; Royal Belgian Institute for Space Aeronomy (IASB-BIRA), Brussels, Belgium. a-c.vandaele@aeronomie.be., Korablev O; Space Research Institute (IKI), Russian Academy of Sciences (RAS), Moscow, Russia., Daerden F; Royal Belgian Institute for Space Aeronomy (IASB-BIRA), Brussels, Belgium., Aoki S; Royal Belgian Institute for Space Aeronomy (IASB-BIRA), Brussels, Belgium., Thomas IR; Royal Belgian Institute for Space Aeronomy (IASB-BIRA), Brussels, Belgium., Altieri F; Istituto di Astrofisica e Planetologia Spaziali (IAPS/INAF), Rome, Italy., López-Valverde M; Instituto de Astrofìsica de Andalucia (IAA), Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain., Villanueva G; NASA Goddard Space Flight Center, Greenbelt, MD, USA., Liuzzi G; NASA Goddard Space Flight Center, Greenbelt, MD, USA., Smith MD; NASA Goddard Space Flight Center, Greenbelt, MD, USA., Erwin JT; Royal Belgian Institute for Space Aeronomy (IASB-BIRA), Brussels, Belgium., Trompet L; Royal Belgian Institute for Space Aeronomy (IASB-BIRA), Brussels, Belgium., Fedorova AA; Space Research Institute (IKI), Russian Academy of Sciences (RAS), Moscow, Russia., Montmessin F; Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, Paris, France., Trokhimovskiy A; Space Research Institute (IKI), Russian Academy of Sciences (RAS), Moscow, Russia., Belyaev DA; Space Research Institute (IKI), Russian Academy of Sciences (RAS), Moscow, Russia., Ignatiev NI; Space Research Institute (IKI), Russian Academy of Sciences (RAS), Moscow, Russia., Luginin M; Space Research Institute (IKI), Russian Academy of Sciences (RAS), Moscow, Russia., Olsen KS; Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, Paris, France., Baggio L; Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, Paris, France., Alday J; Department of Physics, Oxford University, Oxford, UK., Bertaux JL; Space Research Institute (IKI), Russian Academy of Sciences (RAS), Moscow, Russia.; Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, Paris, France., Betsis D; Space Research Institute (IKI), Russian Academy of Sciences (RAS), Moscow, Russia., Bolsée D; Royal Belgian Institute for Space Aeronomy (IASB-BIRA), Brussels, Belgium., Clancy RT; Space Science Institute, Boulder, CO, USA., Cloutis E; Department of Geography, University of Winnipeg, Winnipeg, Manitoba, Canada., Depiesse C; Royal Belgian Institute for Space Aeronomy (IASB-BIRA), Brussels, Belgium., Funke B; Instituto de Astrofìsica de Andalucia (IAA), Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain., Garcia-Comas M; Instituto de Astrofìsica de Andalucia (IAA), Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain., Gérard JC; Laboratory for Planetary and Atmospheric Physics (LPAP), University of Liège, Liège, Belgium., Giuranna M; Istituto di Astrofisica e Planetologia Spaziali (IAPS/INAF), Rome, Italy., Gonzalez-Galindo F; Instituto de Astrofìsica de Andalucia (IAA), Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain., Grigoriev AV; Space Research Institute (IKI), Russian Academy of Sciences (RAS), Moscow, Russia., Ivanov YS; Main Astronomical Observatory (MAO), National Academy of Sciences of Ukraine, Kiev, Ukraine., Kaminski J; Institute of Geophysics, Polish Academy of Sciences, Warsaw, Poland., Karatekin O; Royal Observatory of Belgium, Brussels, Belgium., Lefèvre F; Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, Paris, France., Lewis S; School of Physical Sciences, The Open University, Milton Keynes, UK., López-Puertas M; Instituto de Astrofìsica de Andalucia (IAA), Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain., Mahieux A; Royal Belgian Institute for Space Aeronomy (IASB-BIRA), Brussels, Belgium., Maslov I; Space Research Institute (IKI), Russian Academy of Sciences (RAS), Moscow, Russia., Mason J; School of Physical Sciences, The Open University, Milton Keynes, UK., Mumma MJ; NASA Goddard Space Flight Center, Greenbelt, MD, USA., Neary L; Royal Belgian Institute for Space Aeronomy (IASB-BIRA), Brussels, Belgium., Neefs E; Royal Belgian Institute for Space Aeronomy (IASB-BIRA), Brussels, Belgium., Patrakeev A; Space Research Institute (IKI), Russian Academy of Sciences (RAS), Moscow, Russia., Patsaev D; Space Research Institute (IKI), Russian Academy of Sciences (RAS), Moscow, Russia., Ristic B; Royal Belgian Institute for Space Aeronomy (IASB-BIRA), Brussels, Belgium., Robert S; Royal Belgian Institute for Space Aeronomy (IASB-BIRA), Brussels, Belgium., Schmidt F; Geosciences Paris Sud (GEOPS), Université Paris Sud, Orsay, France., Shakun A; Space Research Institute (IKI), Russian Academy of Sciences (RAS), Moscow, Russia., Teanby NA; School of Earth Sciences, University of Bristol, Bristol, UK., Viscardy S; Royal Belgian Institute for Space Aeronomy (IASB-BIRA), Brussels, Belgium., Willame Y; Royal Belgian Institute for Space Aeronomy (IASB-BIRA), Brussels, Belgium., Whiteway J; Centre for Research in Earth and Space Science, York University, Toronto, Ontario, Canada., Wilquet V; Royal Belgian Institute for Space Aeronomy (IASB-BIRA), Brussels, Belgium., Wolff MJ; Space Science Institute, Boulder, CO, USA., Bellucci G; Istituto di Astrofisica e Planetologia Spaziali (IAPS/INAF), Rome, Italy., Patel MR; School of Physical Sciences, The Open University, Milton Keynes, UK., López-Moreno JJ; Instituto de Astrofìsica de Andalucia (IAA), Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain., Forget F; Laboratoire de Météorologie Dynamique (LMD), CNRS Jussieu, Paris, France., Wilson CF; Department of Physics, Oxford University, Oxford, UK., Svedhem H; European Space Research and Technology Centre (ESTEC), ESA, Noordwijk, The Netherlands., Vago JL; European Space Research and Technology Centre (ESTEC), ESA, Noordwijk, The Netherlands., Rodionov D; Space Research Institute (IKI), Russian Academy of Sciences (RAS), Moscow, Russia.
Jazyk: angličtina
Zdroj: Nature [Nature] 2019 Apr; Vol. 568 (7753), pp. 521-525. Date of Electronic Publication: 2019 Apr 10.
DOI: 10.1038/s41586-019-1097-3
Abstrakt: Global dust storms on Mars are rare 1,2 but can affect the Martian atmosphere for several months. They can cause changes in atmospheric dynamics and inflation of the atmosphere 3 , primarily owing to solar heating of the dust 3 . In turn, changes in atmospheric dynamics can affect the distribution of atmospheric water vapour, with potential implications for the atmospheric photochemistry and climate on Mars 4 . 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 latitudes 5,6 , as well as a decrease in the water column at low latitudes 7,8 . 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/H 2 O 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 H 2 O 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 crystals 3 . The observed changes in H 2 O 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.
Databáze: MEDLINE
Externí odkaz: