Year-round trace gas measurements in the central Arctic during the MOSAiC expedition

• Published in: Scientific Data
• Main Authors: Angot, Hélène, Blomquist, Byron, Howard, Dean, Archer, Stephen, Bariteau, Ludovic, Beck, Ivo, Boyer, Matthew, Crotwell, Molly, Helmig, Detlev, Hueber, Jacques, Jacobi, Hans-Werner, Jokinen, Tuija, Kulmala, Markku, Lan, Xin, Laurila, Tiia, Madronich, Monica, Neff, Donald, Petäjä, Tuukka, Posman, Kevin, Quéléver, Lauriane, Shupe, Matthew, Vimont, Isaac, Schmale, Julia
• Other Authors: Extreme Environments Research Laboratory (EERL), Ecole Polytechnique Fédérale de Lausanne (EPFL), Institute of Arctic Alpine Research University of Colorado Boulder (INSTAAR), University of Colorado Boulder, Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado Boulder -National Oceanic and Atmospheric Administration (NOAA), Bigelow Laboratory for Ocean Sciences, Institute for Atmospheric and Earth System Research (INAR), Helsingin yliopisto = Helsingfors universitet = University of Helsinki, Institut des Géosciences de l’Environnement (IGE), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), National Science Foundation (awards OPP 1807496, 1914781, and 1807163)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2022
• Subjects: Arctic; MOSAiC; Trace gases; [SDE]Environmental Sciences
• Online Access: https://hal.science/hal-03933397; https://hal.science/hal-03933397/document; https://hal.science/hal-03933397/file/s41597-022-01769-6.pdf; https://doi.org/10.1038/s41597-022-01769-6

International audience Abstract Despite the key role of the Arctic in the global Earth system, year-round in-situ atmospheric composition observations within the Arctic are sparse and mostly rely on measurements at ground-based coastal stations. Measurements of a suite of in-situ trace gases were performed in the central Arctic during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition. These observations give a comprehensive picture of year-round near-surface atmospheric abundances of key greenhouse and trace gases, i.e., carbon dioxide, methane, nitrous oxide, ozone, carbon monoxide, dimethylsulfide, sulfur dioxide, elemental mercury, and selected volatile organic compounds (VOCs). Redundancy in certain measurements supported continuity and permitted cross-evaluation and validation of the data. This paper gives an overview of the trace gas measurements conducted during MOSAiC and highlights the high quality of the monitoring activities. In addition, in the case of redundant measurements, merged datasets are provided and recommended for further use by the scientific community.