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Whole Tree Chambers

Please note that this page is still under construction and therefore will contain information that is liable to change


Short name: Whole Tree Chambers

Full name: Whole Tree Chambers facility at UWS Hawkesbury.

Facility Code: WTC

DescriptionThe Whole Tree Chambers (WTC) facility was installed in year 2006 and is located at the Hawkesbury Forest Experiment at the University of Western Sydney on Southee Road, Richmond. They have utilised twelve (12) whole-tree chambers that house trees up to 10 m tall and can accurately measure whole tree CO2 uptake and water loss. Each individual chamber has the ability to control CO2 concentration, air temperature and vapour pressure deficit (VPD). It used E.Globulus and had temps +3 degree and 240ppm CO2. The project uses the tree chambers and a commercial plantation to generate critical new information that is currently unavailable about the interactive effects of elevated CO2 and increasing temperatures on processes underpinning growth and water use of eucalypts. The data will then be used to develop and refine process-based models that can be used by the forestry industry for management of plantations under future climates. Funding bodies of the project include Australian Greenhouse Office, Commonwealth Department of Climate Change, NSW Department of Environment and Climate Change, Australian Research Council, and Swedish University of Agricultural Sciences who provided the whole-tree chambers.

Location co-ordinates

Contact: Craig Barton (c.barton@uws.edu.au)


Barton C.V.M., Ellsworth D.S., Medlyn B.E., et al. (2010) Whole-tree chambers for elevated atmospheric CO2 experimentation and tree scale flux measurements in south-eastern Australia: the Hawkesbury Forest Experiment. Agricultural and Forest Meteorology 150 (7-8), 941-951. URI: http://www.sciencedirect.com/science/article/pii/S0168192310000894

Barton C. V. M., Duursma R. A., Medlyn B. E., Ellsworth D. S., Eamus D., Tissue D. T., Adams M, Conroy J. P., Crous K. Y., Liberloo M., Low M., Linder S., McMurtrie R., (2012) Effects of elevated [CO2] on instantaneous transpiration efficiency at leaf and canopy scales in Eucalyptus saligna. Global Change Biology, vol.18(2), pp 585-595
URI: http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2486.2011.02526.x/abstract

Data Organisation overview

(An overview of how data in general is organised within WTC, e.g. by projects, experiments, or a combination of the two)

File Naming Convention


(all terms in the filename should be upper case apart from the file ending which should be lower case)

WTC: Official HIE facility code to represent data sourced from the WTC facility (all data from the WTC facility will be prefixed by use of the code 'WTC'). See all official HIE facility codes here.
<PROJECT>:  Which of the official WTC projects this data file is associated with. The project code should be used in the filename (capitalized P followed by a 3 digit project number, e.g. P003, P012, etc). Details about different projects taking part at WTC can be found hereIn the event that the data is from automated facility, 'AUTO' can be used for the project code.
<CHAMBER>: Which chamber(s) data has been sourced from. This can include data sourced from a single WTC chamber (using C followed by the 2 digit chamber number, e.g. C02, C08, C15) or from multiple chambers (using CM - details about which chambers are included will be included in the file metadata).
<VARIABLE COLLECTION CODE>: A collection code that represents a particular grouping of variables contained within a file. A list of variables contained within different variable collection codes can be found below.
<DATE or DATERANGE>The date range which a dataset covers (for automated timeseries data for example) or the single date on which a sample, for example, was taken. Note that dates are in the YYYYMMDD format (with a hyphen used to split the start and end date of a date range). Note that in the case of facility data a 'data chunking' date may be used marking on which date the 'chunking' of this file ended/will end (see explanation).
<DATA PROCESSING>: The level of postprocessing operated on the data. The definitions of the different levels of postprocessing can be found below.
<VERSION>: An optional version number of the form _Vx. This can be utilised when a new version of a file already existing within HIEv has been updated/corrected (maintaining the same data processing level).
<filetype>: The format of the data file. Further information about different file types can be found on the data formats page, found here.

WTC_AUTO_C03_CNTRL_R_20130630.dat - Automated data from Chamber 3 within the WTC facility in the 'chunking' period up to 30th June 2013 and covering variables included in the 'CNTRL' category of variables.
WTC_P004_CM_TABLE1_L1_20130527.dat - 'TABLE1' data for the 27th May 2013, created as part of project P004 within the WTC facility, and sourced from multiple chambers (details included in file metadata). The data has been subjected to level one cleaning and processing.
WTC_P004_CM_TABLE1_L1_20130527_V2.dat - Corrected version of the above file (due to an error in the cleaning script).

Variable Collection Codes

The full breakdown of variable collection codes and what they represent can be found here.

Data Processing Codes

The meanings of the different data processing codes used in Glasshouse S30 filenames are as follows: 

R   -  Raw Data.               Data that has been directly extracted from an instrument and that has not been subjected to any data cleaning or post-processing
L1 -   Level One Data.      Data that has been cleaned and processed, but in a cursory manner. Some erroneous data may be included.
L2 -   Level Two Data.      Data that has been rigorously cleaned, processed, and checked for quality control. 
L3 -   Level Three Data.    Archive of published datasets. 

Facility Status History

Details of the operating status of the Glasshouse S30 including shutdown periods etc can be found here.