MERLIN: A French-German Space Lidar Mission Dedicated to Atmospheric Methane

  • Gerhard Ehret
    Deutsches Zentrum für Luft- und Raumfahrt (DLR) Oberpfaffenhofen, Institut für Physik der Atmosphäre, 82234 Weßling, Germany
  • Philippe Bousquet
    Laboratoire des Sciences du Climat et de l’Environnement (LSCE), LSCE-IPSL (CEA-CNRS-UVSQ), IPSL, 91191 Gif sur Yvette, France
  • Clémence Pierangelo
    Centre National D’Etudes Spatiales(CNES), 31400 Toulouse, France
  • Matthias Alpers
    Deutsches Zentrum für Luft- und Raumfahrt, Raumfahrtmanagement (DLR), 53227 Bonn, Germany
  • Bruno Millet
    Centre National D’Etudes Spatiales(CNES), 31400 Toulouse, France
  • James Abshire
    NASA Goddard Space Flight Center (GSFC), Greenbelt, MD 20771, USA
  • Heinrich Bovensmann
    Institute of Environmental Physics, University of Bremen, 28359 Bremen, Germany
  • John Burrows
    Institute of Environmental Physics, University of Bremen, 28359 Bremen, Germany
  • Frédéric Chevallier
    Laboratoire des Sciences du Climat et de l’Environnement (LSCE), LSCE-IPSL (CEA-CNRS-UVSQ), IPSL, 91191 Gif sur Yvette, France
  • Philippe Ciais
    Laboratoire des Sciences du Climat et de l’Environnement (LSCE), LSCE-IPSL (CEA-CNRS-UVSQ), IPSL, 91191 Gif sur Yvette, France
  • Cyril Crevoisier
    Laboratoire de Météorologie Dynamique (LMD), Ecole Polytechnique, 91128 Palaiseau, France
  • Andreas Fix
    Deutsches Zentrum für Luft- und Raumfahrt (DLR) Oberpfaffenhofen, Institut für Physik der Atmosphäre, 82234 Weßling, Germany
  • Pierre Flamant
    Laboratoire de Météorologie Dynamique (LMD), Ecole Polytechnique, 91128 Palaiseau, France
  • Christian Frankenberg
    NASA Jet Propulsion Laboratory (JPL), Pasadena, CA 91109, USA
  • Fabien Gibert
    Laboratoire de Météorologie Dynamique (LMD), Ecole Polytechnique, 91128 Palaiseau, France
  • Birgit Heim
    Alfred-Wegener-Institut (AWI), Helmholtz -Zentrum für Polar- und Meeresforschung, Telegrafenberg, 14473 Potsdam, Germany
  • Martin Heimann
    Max-Planck-Institut (MPI) für Biogeochemie, 07745 Jena, Germany
  • Sander Houweling
    SRON Netherlands Institute for Space Research Utrecht, 3584 CA Utrecht, The Netherlands
  • Hans Hubberten
    Alfred-Wegener-Institut (AWI), Helmholtz -Zentrum für Polar- und Meeresforschung, Telegrafenberg, 14473 Potsdam, Germany
  • Patrick Jöckel
    Deutsches Zentrum für Luft- und Raumfahrt (DLR) Oberpfaffenhofen, Institut für Physik der Atmosphäre, 82234 Weßling, Germany
  • Kathy Law
    Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), IPSL, CNRS-UVSQ-UPMC, 75005 Paris, France
  • Alexander Löw
    Faculty of Geosciences, Department of Geography, Ludwig-Maximilians-Universität (LMU), 80539 München, Germany
  • Julia Marshall
    Max-Planck-Institut (MPI) für Biogeochemie, 07745 Jena, Germany
  • Anna Agusti-Panareda
    European Centre for Medium-Range Weather Forecasts (ECMWF), Reading RG2 9AX, UK
  • Sebastien Payan
    Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), IPSL, CNRS-UVSQ-UPMC, 75005 Paris, France
  • Catherine Prigent
    Centre National de la Recherche Scientifique (CNRS), Observatoire de Paris, 75016 Paris, France
  • Patrick Rairoux
    Institut Lumière Matière, UMR5306 Université Lyon 1-CNRS, Université de Lyon, 69622 Villeurbanne, France
  • Torsten Sachs
    Helmholtz-Zentrum Potsdam—Deutsches GeoForschungsZentrum (GFZ), Telegrafenberg, 14473 Potsdam, Germany
  • Marko Scholze
    Department of Physical Geography and Ecosystem Science, Lund University Box 117, 221 00 Lund, Sweden
  • Martin Wirth
    Deutsches Zentrum für Luft- und Raumfahrt (DLR) Oberpfaffenhofen, Institut für Physik der Atmosphäre, 82234 Weßling, Germany

説明

<jats:p>The MEthane Remote sensing Lidar missioN (MERLIN) aims at demonstrating the spaceborne active measurement of atmospheric methane, a potent greenhouse gas, based on an Integrated Path Differential Absorption (IPDA) nadir-viewing LIght Detecting and Ranging (Lidar) instrument. MERLIN is a joint French and German space mission, with a launch currently scheduled for the timeframe 2021/22. The German Space Agency (DLR) is responsible for the payload, while the platform (MYRIADE Evolutions product line) is developed by the French Space Agency (CNES). The main scientific objective of MERLIN is the delivery of weighted atmospheric columns of methane dry-air mole fractions for all latitudes throughout the year with systematic errors small enough (<3.7 ppb) to significantly improve our knowledge of methane sources from global to regional scales, with emphasis on poorly accessible regions in the tropics and at high latitudes. This paper presents the MERLIN objectives, describes the methodology and the main characteristics of the payload and of the platform, and proposes a first assessment of the error budget and its translation into expected uncertainty reduction of methane surface emissions.</jats:p>

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