[1
]Ecosystem Physiology, Faculty of Environment and Natural Resources, Albert-Ludwig-University
of Freiburg, Freiburg, Germany.
[2
]School of Natural Resources and the Environment, University of Arizona, Tucson, AZ,
USA.
[3
]Biosphere 2, University of Arizona, Oracle, AZ, USA.
[4
]BIO5 Institute, The University of Arizona, Tucson, AZ, USA.
[5
]Department of Ecology, University of Innsbruck, Innsbruck, Austria.
[6
]Honors College, University of Arizona, Tucson, AZ, USA.
[7
]Institute of Geoecology - Environmental Geochemistry, Technical University Braunschweig,
Braunschweig, Germany.
[8
]Department of Civil, Architectural and Environmental Engineering, University of Texas
at Austin, Austin, TX, USA.
[9
]Department of Atmospheric Chemistry, Max Planck Institute for Chemistry, Mainz, Germany.
[10
]Biogeochemistry of Agroecosystems, University of Göttingen, Göttingen, Germany.
[11
]Geo-Biosphere Interactions, University of Tuebingen, Tuebingen, Germany.
[12
]Department of Environmental Science, University of Arizona, Tucson, AZ, USA.
[13
]Max Planck Institute for Biogeochemistry, Jena, Germany.
[14
]Aerodyne Research, Billerica, MA, USA.
[15
]Forest Dynamics, Swiss Federal Institute for Forest, Snow and Landscape Research (WSL),
Birmensdorf, Switzerland.
[16
]Centre for Ecology and Hydrology, University of Edinburgh, Edinburgh, UK.
[17
]Pacific Northwest National Laboratory, Richland, WA, USA.
[18
]Energy, Environment and Water Research Center, The Cyprus Institute, Nicosia, Cyprus.