Articles | Volume 19, issue 21
https://doi.org/10.5194/acp-19-13701-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-19-13701-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Inter-model comparison of global hydroxyl radical (OH) distributions and their impact on atmospheric methane over the 2000–2016 period
Yuanhong Zhao
CORRESPONDING AUTHOR
Laboratoire des Sciences du Climat et de l'Environnement, LSCE-IPSL
(CEA-CNRS-UVSQ), Université Paris-Saclay, 91191 Gif-sur-Yvette, France
Marielle Saunois
Laboratoire des Sciences du Climat et de l'Environnement, LSCE-IPSL
(CEA-CNRS-UVSQ), Université Paris-Saclay, 91191 Gif-sur-Yvette, France
Philippe Bousquet
Laboratoire des Sciences du Climat et de l'Environnement, LSCE-IPSL
(CEA-CNRS-UVSQ), Université Paris-Saclay, 91191 Gif-sur-Yvette, France
Laboratoire des Sciences du Climat et de l'Environnement, LSCE-IPSL
(CEA-CNRS-UVSQ), Université Paris-Saclay, 91191 Gif-sur-Yvette, France
now at: Climate and Space Sciences and Engineering, University
of Michigan, Ann Arbor, MI 48109, USA
Antoine Berchet
Laboratoire des Sciences du Climat et de l'Environnement, LSCE-IPSL
(CEA-CNRS-UVSQ), Université Paris-Saclay, 91191 Gif-sur-Yvette, France
Michaela I. Hegglin
Department of Meteorology, University of Reading, Reading, UK
Josep G. Canadell
Global Carbon Project, CSIRO Oceans and Atmosphere, Canberra,
Australian Capital Territory 2601, Australia
Robert B. Jackson
Earth System Science Department, Woods Institute for the Environment,
and Precourt Institute for Energy, Stanford University, Stanford, CA 94305,
USA
Didier A. Hauglustaine
Laboratoire des Sciences du Climat et de l'Environnement, LSCE-IPSL
(CEA-CNRS-UVSQ), Université Paris-Saclay, 91191 Gif-sur-Yvette, France
Sophie Szopa
Laboratoire des Sciences du Climat et de l'Environnement, LSCE-IPSL
(CEA-CNRS-UVSQ), Université Paris-Saclay, 91191 Gif-sur-Yvette, France
Ann R. Stavert
CSIRO Oceans and Atmosphere, Aspendale, Victoria, 3195, Australia
Nathan Luke Abraham
Department of Chemistry, University of Cambridge, CB2 1EW, Cambridge, UK
NCAS-Climate, University of Cambridge, CB2 1EW, Cambridge, UK
Alex T. Archibald
Department of Chemistry, University of Cambridge, CB2 1EW, Cambridge, UK
NCAS-Climate, University of Cambridge, CB2 1EW, Cambridge, UK
Slimane Bekki
LATMOS, Université Pierre et Marie Curie, 4 Place Jussieu Tour
45, couloir 45–46, 3e étage Boite 102, 75252, Paris CEDEX 05, France
Makoto Deushi
Meteorological Research Institute, 1-1 Nagamine, Tsukuba, Ibaraki,
305-0052, Japan
Patrick Jöckel
Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für
Physik der Atmosphäre, Oberpfaffenhofen, Germany
Béatrice Josse
Centre National de Recherches Météorologiques, Université
de Toulouse, Météo-France, CNRS, Toulouse, France
Douglas Kinnison
Atmospheric Chemistry Observations and Modeling Laboratory, National
Center for Atmospheric Research, 3090 Center Green Drive, Boulder, CO
80301, USA
Ole Kirner
Steinbuch Centre for Computing, Karlsruhe Institute of Technology,
Karlsruhe, Germany
Virginie Marécal
Centre National de Recherches Météorologiques, Université
de Toulouse, Météo-France, CNRS, Toulouse, France
Fiona M. O'Connor
Met Office Hadley Centre, Exeter, EX1 3PB, UK
David A. Plummer
Climate Research Branch, Environment and Climate Change Canada,
Montreal, Canada
Laura E. Revell
Institute for Atmospheric and Climate Science, ETH Zürich
(ETHZ), Zürich, Switzerland
School of Physical and Chemical Sciences, University of Canterbury,
Christchurch, New Zealand
Eugene Rozanov
Institute for Atmospheric and Climate Science, ETH Zürich
(ETHZ), Zürich, Switzerland
Physikalisch-Meteorologisches Observatorium Davos World Radiation
Centre, Dorfstrasse 33, 7260 Davos Dorf, Switzerland
Andrea Stenke
Institute for Atmospheric and Climate Science, ETH Zürich
(ETHZ), Zürich, Switzerland
Sarah Strode
NASA Goddard Space Flight Center, Greenbelt, MD, USA
Universities Space Research Association (USRA), GESTAR, Columbia,
MD, USA
Simone Tilmes
Atmospheric Chemistry Observations and Modeling Laboratory, National
Center for Atmospheric Research, 3090 Center Green Drive, Boulder, CO
80301, USA
Edward J. Dlugokencky
Global Monitoring Division, NOAA Earth System Research Laboratory,
Boulder, CO, USA
Laboratoire des Sciences du Climat et de l'Environnement, LSCE-IPSL
(CEA-CNRS-UVSQ), Université Paris-Saclay, 91191 Gif-sur-Yvette, France
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Short summary
The role of hydroxyl radical changes in methane trends is debated, hindering our understanding of the methane cycle. This study quantifies how uncertainties in the hydroxyl radical may influence methane abundance in the atmosphere based on the inter-model comparison of hydroxyl radical fields and model simulations of CH4 abundance with different hydroxyl radical scenarios during 2000–2016. We show that hydroxyl radical changes could contribute up to 54 % of model-simulated methane biases.
The role of hydroxyl radical changes in methane trends is debated, hindering our understanding...
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