The University of Arizona-Biosphere 2, P.O. Box 8746, Tucson, AZ 85738, USA

Department of Physical Geography and Ecosystems Analysis, Lund University, Sölvegatan 12, 223 62 Lund, Sweden

Karlsruhe Institute of Technology, Institute for Meteorology and Climate Research/Atmospheric Environmental Research, Kreuzeckbahnstr. 19, 82467 Garmisch-Partenkirchen, Germany

Department of Physical Geography and Ecosystems Analysis, Lund University, Sölvegatan 12, 223 62 Lund, Sweden

Department of Chemistry & Biochemistry, University of Arizona, P.O. Box 210041, 1306 East University Blvd., Tucson, AZ 85721–0041, USA

Department of Soil, Water and Environmental Science, University of Arizona, P.O. Box 210038, Tucson, AZ 85721–0038, USA

The University of Arizona-Biosphere 2, P.O. Box 8746, Tucson, AZ 85738, USA

Instituto de Fisica, Universidade de Sao Paulo, Rua do Matao, Travessa R,187 Sao Paulo SP 05508–900, Brazil

Large Biosphere-Atmosphere Experiment (LBA), Instituto Nacional de Pesquisas da Amazônia, Av. André Araújo, 2936, Aleixo, CEP 69060–001, Manaus, Brazil

Biogeochemistry Department, Max Planck Institute for Chemistry, P.O. Box 3060, 55020 Mainz, Germany

Department of Ecology and Evolutionary Biology, University of Arizona, P.O. Box 210088, BioSciences West 310, Tucson, AZ, 85721, USA

Department of Ecology and Evolutionary Biology, University of Arizona, P.O. Box 210088, BioSciences West 310, Tucson, AZ, 85721, USA

Department of Ecology and Evolutionary Biology, University of Arizona, P.O. Box 210088, BioSciences West 310, Tucson, AZ, 85721, USA

The University of Arizona-Biosphere 2, P.O. Box 8746, Tucson, AZ 85738, USA