Alcide Giorgio di Sarra [Italian National agency for new technologies, Energy and sustainable economic development, laboratory UTMEA-TER Earth Observations and Analyses] Anders Lindroth [Lund University, Dept. Phys. Geography & Ecosystem Science] Andrea Lanza [Ricerca sul Sistema Energetico**– RSE S.p.A.**, Milano, Italy] Andreas Zahn [Institute for Meteorology and Climate Research (IMK), Karlsruhe Institute of Technology (KIT)] Andrew Watson [University of Exeter, Centre for Environmental Data Analysis] Anna Karion [National Institute of Standards and Technology] Antje Hoheisel [Universitaet Heidelberg] Ari Leskinen [University of Eastern Finland, Department of Technical Physics, Kuopio, Finland ] Arlyn Andrews [National Oceanic and Atmospheric Administration] Armin Jordan [Max-Planck-Institute for Biogeochemistry] 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] Bianca Baier [National Oceanic and Atmospheric Administration] Brian Viner [Atmospheric Technologies Group Savannah River National Laboratory] Britton Stephens [National Center for Atmospheric Research] Bruce Daube [Harvard University] Camille Yver-Kwok [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] Christoph Gerbig [Max-Planck-Institute for Biogeochemistry] 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.] David Steger [Swiss Federal Laboratories for Materials Science and Technology] Dieter Scharfe [Max-Planck-Institute for Biogeochemistry] Dietmar Weyrauch [Hohenpeißenberg Meteorological Observatory] Elena Kozlova [University of Exeter, Centre for Environmental Data Analysis] Emilio Cuevas [State Meteorological Agency of Spain] Eric Kort [University of Michigan] Florian Obersteiner [Institute for Meteorology and Climate Research (IMK), Karlsruhe Institute of Technology (KIT)] Francesco Apadula [Ricerca sul Sistema Energetico**– RSE S.p.A.**, Milano, Italy] Francescopiero Calzolari [CNR-ISAC] Frank Meinhardt [Umweltbundesamt, Station Schauinsland] Franz Conen [University of Basel] Gabriela Vitkova [Czechglobe] Gabrielle Petron [National Oceanic and Atmospheric Administration] Gao Chen [NASA Langley Research Center] Giovanni Manca [Joint Research Centre of Europena Commission] Glenn Diskin [NASA Langley Research Center] Grant Forster [UEA/NCAS (National Centre for Atmospheric Science)] Heiko Moossen [Max-Planck-Institute for Biogeochemistry] Helder Timas [Instituto Nacional de Meteorologia e Geofisica, Cape Verde] Huilin Chen [Centre for Isotope Research, Energy and Sustainability Research Institute Groningen, University of Groningen] Irene Lehner [Lund University, Centre for Environmental and Climate Science] Ivan Mammarella [Institute for Atmospheric and Earth System Research/Physics, Faculty of Sciences, University of Helsinki] Janne Levula [Institute for Atmospheric and Earth System Research/Physics, Faculty of Sciences, University of Helsinki] 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] Joshua P. DiGangi [NASA Langley Research Center] Jost Lavric [Max Planck Institute for Biogeochemistry] Juha Hatakka [Finnish Meteorological Institute] Justin Worsey [University of Exeter, Centre for Environmental Data Analysis] 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] Kenneth J. Davis [Penn State University] Lino Condori [Servicio Meteorologico Nacional] 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] 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 Heimann [Max-Planck-Institute for Biogeochemistry] 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] Melissa Yang Martin [NASA Suborbital Research Center] Michael Elsasser [Umweltbundesamt] Michael Rothe [Max-Planck-Institute for Biogeochemistry] 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] Morgan Lopez [Laboratoire des Sciences du Climat et de l’Environnement, Gif sur Yvette, France] Natasha L. Miles [Penn State University] 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 [] Paul Shepson [Purdue University] 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 Bergamaschi [European Commission, Joint Research Centre] Petri Keronen [Institute for Atmospheric and Earth System Research/Physics, Faculty of Sciences, University of Helsinki] Philippe Nédélec [Laboratoire d'Aerologie] Ray L. Langenfelds [Commonwealth Scientific and Industrial Research Organisation, Environment, Aspendale, Victoria, Australia ] Reimo Leppert [Max-Planck-Institute for Biogeochemistry] Risto Taipale [University of Helsinki] Roisin Commane [Harvard University] Romain Blot [Laboratoire d'Aerologie] Russell Dickerson [University of Maryland] 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] Scott J. Richardson [Penn State University] Sebastien C. Biraud [ARM Carbon Project, Lawrence Berkeley National Laboratory] Sébastien Conil [Agence nationale pour la gestion des déchets radioactifs] Sönke Zaehle [Max-Planck-Institute for Biogeochemistry] Stephan De Wekker [University of Virginia] Stephen Matthew Platt [Norwegian Institute for Air Research, Kjeller, Norway] Steven C. Wofsy [Department of Earth and Planetary Sciences, Harvard University] Tatiana Di Iorio [LMP] Thomas Seifert [Max-Planck-Institute for Biogeochemistry] Tobias Biermann [Lund University, Centre for Environmental and Climate Science] Tobias Kneuer [Hohenpeissenberg Meteorological Observatory] Torsten Gehrlein [Institute for Meteorology and Climate Research (IMK), Karlsruhe Institute of Technology (KIT)] Tuomas Laurila [Finnish Meteorological Institute] Tuula Aalto [Finnish Meteorological Institute] Victor Kazan [Laboratoire des Sciences du Climat et de l'Environnement] Willi A. Brand [Max-Planck-Institute for Biogeochemistry] Xinrong Ren [NOAA Air Resources Laboratory] Yves-Alain Roulet [Federal Office of Meteorology and Climatology MeteoSwiss] Zoe M. Loh [Commonwealth Scientific and Industrial Research Organisation, Environment, Aspendale, Victoria, Australia ]