Alcide Giorgio di Sarra [Italian National agency for new technologies, Energy and sustainable economic development, laboratory UTMEA-TER Earth Observations and Analyses] Alex Vermeulen [Lund University, Dept. Phys. Geography & Ecosystem Science] Alistair Manning [Met Office] Anders Lindroth [Lund University, Dept. Phys. Geography & Ecosystem Science] Andrea Lanza [Ricerca sul Sistema Energetico**– RSE S.p.A.**, Milano, Italy] Andrew Manning [Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia] Anna Karion [National Institute of Standards and Technology] Antje Hoheisel [Universitaet Heidelberg] Ari Leskinen [University of Eastern Finland, Department of Technical Physics, Kuopio, Finland ] Arjan Hensen [Energy Research Centre of the Netherlands] Arlyn Andrews [National Oceanic and Atmospheric Administration] Arnoud Frumau [Energy Research Centre of the Netherlands] Aurelie Colomb [Observatoire de Physique du Globe de Clermont Ferrand ] Bert Scheeren [Centre for Isotope Research, Energy and Sustainability Research Institute Groningen, University of Groningen] Brian Viner [Atmospheric Technologies Group Savannah River National Laboratory] Camille Yver-Kwok [Laboratoire des Sciences du Climat et de l'Environnement] Carole Philippon [Laboratoire des Sciences du Climat et de l'Environnement ] Cathrine Lund Myhre [Norwegian Institute for Air Research, Kjeller, Norway] Cédric Couret [Umweltbundesamt, Zugspitze, Germany] Charles E. Miller [NASA Jet Propulsion Laboratory] Chris René Lunder [Norwegian Institute for Air Research, Kjeller, Norway] Christian Hermans [Royal Belgian Institute for Space Aeronomy] Christian Plass-Dülmer [Hohenpeißenberg Meteorological Observatory] Christopher D. Sloop [Earth Networks] Colm Sweeney [National Oceanic and Atmospheric Administration] Dagmar Kubistin [Hohenpeißenberg Meteorological Observatory] Daniel A Jaffe [University of Washington] Daniela Heltai [Ricerca sul Sistema Energetico - RSE S.p.A.] Danielle van Dinther [Energy Research Centre of the Netherlands] David Steger [Swiss Federal Laboratories for Materials Science and Technology] Dickon Young [University of Bristol] Dietmar Weyrauch [Hohenpeißenberg Meteorological Observatory] Doug Worthy [Environment and Climate Change Canada] Emilio Cuevas [State Meteorological Agency of Spain] Enrique Reyes-Sanchez [State Meteorological Agency of Spain] Francesco Apadula [Ricerca sul Sistema Energetico**– RSE S.p.A.**, Milano, Italy] Francescopiero Calzolari [CNR-ISAC] Francois Gheusi [Observatoire Midi-Pyrenees] Frank Meinhardt [Umweltbundesamt, Station Schauinsland] Franz Conen [University of Basel] Gabriela Vitkova [Czechglobe] Giovanni Manca [Joint Research Centre of Europena Commission] Grant Forster [UEA/NCAS (National Centre for Atmospheric Science)] Harro Meijer [Centre for Isotope Research, Energy and Sustainability Research Institute Groningen, University of Groningen] Huilin Chen [Centre for Isotope Research, Energy and Sustainability Research Institute Groningen, University of Groningen] Ingeborg Levin [Universitaet Heidelberg] Irene Lehner [Lund University, Centre for Environmental and Climate Science] Irène Xueref-Remy [Aix-Marseille University] Ivan Mammarella [Institute for Atmospheric and Earth System Research/Physics, Faculty of Sciences, University of Helsinki] Jakub Bartyzel [AGH University of Krakow, Poland] Janne Levula [Institute for Atmospheric and Earth System Research/Physics, Faculty of Sciences, University of Helsinki] Jaroslaw Necki [AGH University of Krakow] Jean Marc Pichon [Observatoire de Physique du Globe de Clermont Ferrand ] Jean-Marc Metzger [Observatoire de Physique de l'Atmosphère de la Réunion] Jennifer Müller-Williams [Hohenpeißenberg Meteorological Observatory] Jocelyn Turnbull [GNS Science] John B. Miller [National Oceanic and Atmospheric Administration] John Lee [University of Maine] Joseph Pitt [University of Bristol] Juha Hatakka [Finnish Meteorological Institute] Julian Della Coletta [Universitaet Heidelberg] Jutta Holst [Lund University, Dept. Phys. Geography & Ecosystem Science] Kari Lehtinen [Finnish Meteorological Institute] Katerina Kominkova [Global Change Research Institute of the Czech Academy of Sciences] Kathryn McKain [National Oceanic and Atmospheric Administration] Kirk Thoning [National Oceanic and Atmospheric Administration] Lino Condori [Servicio Meteorologico Nacional] Lise Lotte Sørensen [Aarhus University] Louis-Jeremy Rigouleau [Laboratoire des Sciences du Climat et de l'Environnement] Lukas Bäni [University of Bern] Lukas Emmenegger [Swiss Federal Laboratories for Materials Science and Technology] Lukasz Chmura [AGH University of Krakow, Poland] Mahesh Kumar Sha [] Marc Delmotte [Laboratoire des Sciences du Climat et de l'Environnement] Marc L. Fischer [Lawrence Berkeley National Laboratory] Marcus Schumacher [Max Planck Institute for Biogeochemistry] Markus Leuenberger [Climate and Environmental Physics, Physics Institute, University of Bern] Marta Fuente-Lastra [Laboratoire des Sciences du Climat et de l'Environnement] Martin Steinbacher [Swiss Federal Laboratories for Materials Science and Technology] Martina Schmidt [Laboratoire des Sciences du Climat et de l'Environnement - UMR8212 CEA-CNRS-UVSQ] Martine De Mazière [Observatoire de Physique de l'Atmosphère de la Réunion ] Matthias Lindauer [Hohenpeißenberg Meteorological Observatory] Meelis Mölder [Lund University - Department of Physical Geography and Ecosystem Science] Michael Elsasser [Umweltbundesamt] Michal Galkowski [AGH University of Krakow, Poland] Michal Heliasz [Lund University, Centre for Environmental and Climate Science] Michal V. Marek [CzechGlobe -Global Change Research Institute CAS] Michel Ramonet [Laboratoire des Sciences du Climat et de l'Environnement] Mikaell Ottosson Löfvenius [Unit for Field-based Forest Research, Swedish University of Agricultural Sciences] Miroslaw Zimnoch [AGH University of Krakow, Poland] Morgan Lopez [Laboratoire des Sciences du Climat et de l’Environnement, Gif sur Yvette, France] Nicolas Kumps [Royal Belgian Institute for Space Aeronomy] Olivier Laurent [ICOS Atmospheric Thematic Center] Olli Peltola [Finnish Meteorological Institute] Ove Hermansen [Norwegian Institute for Air Research, Kjeller, Norway] Pamela Trisolino [ISAC] Paolo Cristofanelli [Institute of Atmospheric Sciences and Climate (CNR-ISAC)] Pasi Kolari [Institute for Atmospheric and Earth System Research/Physics, Faculty of Sciences, University of Helsinki] Paul B. Krummel [Commonwealth Scientific and Industrial Research Organisation, Environment, Aspendale, Victoria, Australia ] Paul D. Smith [] Pedro P. Rivas [State Meteorological Agency of Spain] Penelope Pickers [University of East Anglia] Per Marklund [Unit for Field-based Forest Research, Swedish University of Agricultural Sciences] Peter Bakwin [] Peter Bergamaschi [European Commission, Joint Research Centre] Petri Keronen [Institute for Atmospheric and Earth System Research/Physics, Faculty of Sciences, University of Helsinki] Pierre-Eric Blanc [OSU Institut Pythéas] Pieter Tans [INSTAAR Stable Isotope Laboratory] Pim van den Bulk [Energy Research Centre of the Netherlands] Ramon Ramos [State Meteorological Agency of Spain] Ray L. Langenfelds [Commonwealth Scientific and Industrial Research Organisation, Environment, Aspendale, Victoria, Australia ] Risto Taipale [University of Helsinki] Sabrina Arnold [Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Physik der Atmosphäre] Salvatore Piacentino [Italian National agency for new technologies, Energy and sustainable economic development, laboratory UTMEA-TER Earth Observations and Analyses] Samuel Hammer [Universitaet Heidelberg] Sebastien C. Biraud [ARM Carbon Project, Lawrence Berkeley National Laboratory] Sébastien Conil [Agence nationale pour la gestion des déchets radioactifs] Simon O'Doherty [Atmospheric Chemistry Research Group School of Chemistry University of Bristol] Stephan De Wekker [University of Virginia] Stephen Matthew Platt [Norwegian Institute for Air Research, Kjeller, Norway] Tatiana Di Iorio [LMP] Tobias Biermann [Lund University, Centre for Environmental and Climate Science] Tobias Kneuer [Hohenpeissenberg Meteorological Observatory] Tuomas Laurila [Finnish Meteorological Institute] Tuula Aalto [Finnish Meteorological Institute] Victor Kazan [Laboratoire des Sciences du Climat et de l'Environnement] Xin Lan [National Oceanic and Atmospheric Administration] Yves-Alain Roulet [Federal Office of Meteorology and Climatology MeteoSwiss] Zoe M. Loh [Commonwealth Scientific and Industrial Research Organisation, Environment, Aspendale, Victoria, Australia ]