Alcide Giorgio di Sarra [Italian National agency for new technologies, Energy and sustainable economic development, laboratory UTMEA-TER Earth Observations and Analyses] 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] 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] 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 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] Dieter Scharfe [Max-Planck-Institute for Biogeochemistry] Elena Kozlova [University of Exeter, Centre for Environmental Data Analysis] Eric Kort [University of Michigan] Florian Obersteiner [Institute for Meteorology and Climate Research (IMK), Karlsruhe Institute of Technology (KIT)] Frank Meinhardt [Umweltbundesamt, Station Schauinsland] Gabriela Vitkova [CzechGlobe -Global Change Research Institute CAS] 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)] 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] Jean Marc Pichon [Observatoire de Physique du Globe de Clermont Ferrand ] 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] 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] Kjetil Tørseth [Norwegian Institute for Air Research, Kjeller, Norway] 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] Martin Heimann [University of Exeter, Centre for Environmental Data Analysis] 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 [] Matthias Lindauer [Hohenpeißenberg Meteorological Observatory] Meelis Mölder [Lund University - Department of Physical Geography and Ecosystem Science] Melissa Yang Martin [NASA Suborbital Research Center] 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] Morgan Lopez [Laboratoire des Sciences du Climat et de l’Environnement, Gif sur Yvette, France] Natasha L. Miles [Penn State University] Olivier Laurent [ICOS Atmospheric Thematic Center] Ove Hermansen [Norwegian Institute for Air Research, Kjeller, Norway] Pamela Trisolino [ISAC] Paolo Cristofanelli [Institute of Atmospheric Sciences and Climate (CNR-ISAC)] Paul D. Smith [] Paul Krummel [Commonwealth Scientific and Industrial Research Organisation, Environment, Aspendale, Victoria, Australia ] Paul Shepson [Purdue University] Penelope Pickers [University of East Anglia] Peter Bergamaschi [European Commission, Joint Research Centre] Petri Keronen [Institute for Atmospheric and Earth System Research/Physics, Faculty of Sciences, University of Helsinki] Ray L. Langenfelds [Commonwealth Scientific and Industrial Research Organisation, Environment, Aspendale, Victoria, Australia ] Reimo Leppert [University of Exeter, Centre for Environmental Data Analysis] Roisin Commane [Harvard University] 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] Stephen Matthew Platt [Norwegian Institute for Air Research, Kjeller, Norway] Steven C. Wofsy [Harvard University, Division of Engineering and Applied Science/Department of Earth and Planetary Science] Thomas Seifert [University of Exeter, Centre for Environmental Data Analysis] 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] Zoe Loh [Commonwealth Scientific and Industrial Research Organisation, Environment, Aspendale, Victoria, Australia ]