Application type: Carbon dioxide supply and control system Project area: QNI Nickel Refinery, Townsville, Australia Contracting agencies: Campbell Scientific Australia Pty Ltd. Datalogger(s): Campbell Scientific CR10Xs Communication links: MD9 coaxial network, GSM cellphone via PC Measured parameters: Wind speed and direction, CO 2 pressure, CO 2 concentration Controlled parameters: CO 2 delivery rate n experimental facility (OzFace) has been estab- lished in Townsville, Australia to examine the impacts of elevated carbon dioxide and climate change on tropical savannas. While there are sever- al other Free-Air Carbon dioxide Enrichment (FACE) systems throughout the world, the OzFace system is the first in Australia and the first in the world conducted in the tropical savannas. The OzFace

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