Data

Gatum Pasture Flux Data Release 2023_v2

Terrestrial Ecosystem Research Network
Silva, Marcela ; McHugh, Ian ; Daly, Edoardo
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.25901/fhgy-s761&rft.title=Gatum Pasture Flux Data Release 2023_v2&rft.identifier=10.25901/fhgy-s761&rft.publisher=Terrestrial Ecosystem Research Network&rft.description=This release consists of flux tower measurements of the exchange of energy and mass between the surface and the atmospheric boundary-layer using eddy covariance techniques. Data were processed using PyFluxPro (v3.4.15) as described by Isaac et al. (2017). PyFluxPro produces a final, gap-filled product with Net Ecosystem Exchange (NEE) partitioned into Gross Primary Productivity (GPP) and Ecosystem Respiration (ER). The Gatum Pasture flux station, established in February 2015, was located on private farmland in southwestern Victoria, approximately 300 km west of Melbourne. The pasture is composed of winter-active perennial grasses (Phalaris aquatica L. and Trifolium subteraneum L.) and is used for sheep and, sporadically, cattle grazing.All flux raw data is subject to the quality control process OzFlux QA/QC to generate data from L1 to L6. Levels 3 to 6 are available for re-use. Datasets contain Quality Controls flags which will indicate when data quality is poor and has been filled from alternative sources. For more details, refer to Isaac et al. (2017).Progress Code: completedMaintenance and Update Frequency: biannually&rft.creator=Silva, Marcela &rft.creator=McHugh, Ian &rft.creator=Daly, Edoardo &rft.date=2023&rft.edition=2023_v2&rft.relation=https://doi.org/10.5194/bg-13-5895-2016&rft.relation=https://doi.org/10.1002/hyp.14784&rft.coverage=The Gatum Pasture flux station is located on private farmland in southwestern Victoria, approximately 300 km west of Melbourne.&rft.coverage=northlimit=-37.389425; southlimit=-37.389425; westlimit=141.960839; eastLimit=141.960839; projection=EPSG:4326&rft_rights=Creative Commons Attribution 4.0 International Licence http://creativecommons.org/licenses/by/4.0&rft_rights=&rft_rights=TERN services are provided on an “as-is” and “as available” basis. Users use any TERN services at their discretion and risk. They will be solely responsible for any damage or loss whatsoever that results from such use including use of any data obtained through TERN and any analysis performed using the TERN infrastructure. <br /><br />Web links to and from external, third party websites should not be construed as implying any relationships with and/or endorsement of the external site or its content by TERN.<br /><br />Please advise any work or publications that use this data via the online form at https://www.tern.org.au/research-publications/#reporting&rft_rights=Please cite this dataset as {Author} ({PublicationYear}). {Title}. {Version, as appropriate}. Terrestrial Ecosystem Research Network. Dataset. {Identifier}.&rft_subject=climatologyMeteorologyAtmosphere&rft_subject=BIOGEOCHEMICAL PROCESSES&rft_subject=EARTH SCIENCE&rft_subject=SOLID EARTH&rft_subject=GEOCHEMISTRY&rft_subject=LAND PRODUCTIVITY&rft_subject=LAND SURFACE&rft_subject=LAND USE/LAND COVER&rft_subject=EVAPOTRANSPIRATION&rft_subject=ATMOSPHERE&rft_subject=ATMOSPHERIC WATER VAPOR&rft_subject=TERRESTRIAL ECOSYSTEMS&rft_subject=BIOSPHERE&rft_subject=ATMOSPHERIC PRESSURE MEASUREMENTS&rft_subject=ATMOSPHERIC PRESSURE&rft_subject=TURBULENCE&rft_subject=WIND SPEED&rft_subject=WIND DIRECTION&rft_subject=TRACE GASES/TRACE SPECIES&rft_subject=ATMOSPHERIC CHEMISTRY&rft_subject=ATMOSPHERIC CARBON DIOXIDE&rft_subject=LONGWAVE RADIATION&rft_subject=SHORTWAVE RADIATION&rft_subject=INCOMING SOLAR RADIATION&rft_subject=ATMOSPHERIC RADIATION&rft_subject=HEAT FLUX&rft_subject=AIR TEMPERATURE&rft_subject=ATMOSPHERIC TEMPERATURE&rft_subject=SURFACE TEMPERATURE&rft_subject=HUMIDITY&rft_subject=SOIL MOISTURE/WATER CONTENT&rft_subject=SOIL TEMPERATURE&rft_subject=ATMOSPHERIC SCIENCES&rft_subject=EARTH SCIENCES&rft_subject=ECOLOGICAL APPLICATIONS&rft_subject=ENVIRONMENTAL SCIENCES&rft_subject=Ecosystem Function&rft_subject=ENVIRONMENTAL SCIENCE AND MANAGEMENT&rft_subject=Environmental Monitoring&rft_subject=SOIL SCIENCES&rft_subject=Gatum Pasture Flux Station&rft_subject=Kipp&Zonen CNR4&rft_subject=Hukseflux HFP01&rft_subject=Campbell Scientific CS616&rft_subject=Campbell Scientific 108&rft_subject=Rotronic HC2(A)-S, HC2(A)-S3(H), HC2(A)-S-HH, HC2-S3CO3(-PT15), HC2(A)-SM and HC2-S and HC2A-S series&rft_subject=Campbell Scientific IRGASON&rft_subject=Campbell Scientific CPEC200&rft_subject=Campbell Scientific Q7.1&rft_subject=surface upward mole flux of carbon dioxide (Micromoles per square metre second)&rft_subject=Micromoles per square metre second&rft_subject=surface upward sensible heat flux (Watt per Square Meter)&rft_subject=Watt per Square Meter&rft_subject=soil temperature (degree Celsius)&rft_subject=degree Celsius&rft_subject=wind speed (Meter per Second)&rft_subject=Meter per Second&rft_subject=gross primary productivity (Micromoles per square metre second)&rft_subject=specific humidity (Kilogram per Kilogram)&rft_subject=Kilogram per Kilogram&rft_subject=water vapor partial pressure in air (Kilopascal)&rft_subject=Kilopascal&rft_subject=wind from direction (Degree)&rft_subject=Degree&rft_subject=Monin-Obukhov length (Meter)&rft_subject=Meter&rft_subject=surface friction velocity (Meter per Second)&rft_subject=ecosystem respiration (Micromoles per square metre second)&rft_subject=mole fraction of water vapor in air (Millimoles per mole)&rft_subject=Millimoles per mole&rft_subject=downward heat flux at ground level in soil (Watt per Square Meter)&rft_subject=surface upward flux of available energy (Watt per Square Meter)&rft_subject=volume fraction of condensed water in soil (Cubic Meter per Cubic Meter)&rft_subject=Cubic Meter per Cubic Meter&rft_subject=water evapotranspiration flux (Unitless)&rft_subject=Unitless&rft_subject=mass concentration of water vapor in air (Gram per Cubic Meter)&rft_subject=Gram per Cubic Meter&rft_subject=surface upward latent heat flux (Watt per Square Meter)&rft_subject=water vapor saturation deficit in air (Kilopascal)&rft_subject=net ecosystem productivity (Micromoles per square metre second)&rft_subject=surface upwelling longwave flux in air (Watt per Square Meter)&rft_subject=surface downwelling shortwave flux in air (Watt per Square Meter)&rft_subject=surface upwelling shortwave flux in air (Watt per Square Meter)&rft_subject=surface net downward radiative flux (Watt per Square Meter)&rft_subject=thickness of rainfall amount (Millimetre)&rft_subject=Millimetre&rft_subject=mole fraction of carbon dioxide in air (Micromoles per mole)&rft_subject=Micromoles per mole&rft_subject=air temperature (degree Celsius)&rft_subject=vertical wind (Meter per Second)&rft_subject=surface downwelling longwave flux in air (Watt per Square Meter)&rft_subject=net ecosystem exchange (Micromoles per square metre second)&rft_subject=magnitude of surface downward stress (Kilograms per metre per square second)&rft_subject=Kilograms per metre per square second&rft_subject=longitudinal component of wind speed (Meter per Second)&rft_subject=relative humidity (Percent)&rft_subject=Percent&rft_subject=surface air pressure (Kilopascal)&rft_subject=lateral component of wind speed (Meter per Second)&rft_subject=specific humidity saturation deficit in air (Kilogram per Kilogram)&rft_subject=Point Resolution&rft_subject=1 minute - < 1 hour&rft_subject=Pasture&rft.type=dataset&rft.language=English Access the data

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Creative Commons Attribution 4.0 International Licence
http://creativecommons.org/licenses/by/4.0

TERN services are provided on an “as-is” and “as available” basis. Users use any TERN services at their discretion and risk. They will be solely responsible for any damage or loss whatsoever that results from such use including use of any data obtained through TERN and any analysis performed using the TERN infrastructure.

Web links to and from external, third party websites should not be construed as implying any relationships with and/or endorsement of the external site or its content by TERN.

Please advise any work or publications that use this data via the online form at https://www.tern.org.au/research-publications/#reporting

Please cite this dataset as {Author} ({PublicationYear}). {Title}. {Version, as appropriate}. Terrestrial Ecosystem Research Network. Dataset. {Identifier}.

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Brief description


This release consists of flux tower measurements of the exchange of energy and mass between the surface and the atmospheric boundary-layer using eddy covariance techniques. Data were processed using PyFluxPro (v3.4.15) as described by Isaac et al. (2017). PyFluxPro produces a final, gap-filled product with Net Ecosystem Exchange (NEE) partitioned into Gross Primary Productivity (GPP) and Ecosystem Respiration (ER).

The Gatum Pasture flux station, established in February 2015, was located on private farmland in southwestern Victoria, approximately 300 km west of Melbourne. The pasture is composed of winter-active perennial grasses (Phalaris aquatica L. and Trifolium subteraneum L.) and is used for sheep and, sporadically, cattle grazing.

Notes

Data Processing

File naming convention

The NetCDF files follow the naming convention below:

SiteName_ProcessingLevel_FromDate_ToDate_Type.nc
  • SiteName: short name of the site
  • ProcessingLevel: file processing level (L3, L4, L5, L6)
  • FromDate: temporal interval (start), YYYYMMDD
  • ToDate: temporal interval (end), YYYYMMDD
  • Type (Level 6 only): Summary, Monthly, Daily, Cumulative, Annual
For the NetCDF files at Level 6 (L6), there are several additional 'aggregated' files. For example:
  • Summary: This file is a summary of the L6 data for daily, monthly, annual and cumulative data. The files Monthly to Annual below are combined together in one file.
  • Monthly: This file shows L6 monthly averages of the respective variables, e.g. AH, Fc, NEE, etc.
  • Daily: same as Monthly but with daily averages.
  • Cumulative: File showing cumulative values for ecosystem respiration, evapo-transpiration, gross primary product, net ecosystem exchange and production as well as precipitation.
  • Annual: same as Monthly but with annual averages.

Lineage

All flux raw data is subject to the quality control process OzFlux QA/QC to generate data from L1 to L6. Levels 3 to 6 are available for re-use. Datasets contain Quality Controls flags which will indicate when data quality is poor and has been filled from alternative sources. For more details, refer to Isaac et al. (2017).

Progress Code: completed
Maintenance and Update Frequency: biannually

Notes

Credit
We at TERN acknowledge the Traditional Owners and Custodians throughout Australia, New Zealand and all nations. We honour their profound connections to land, water, biodiversity and culture and pay our respects to their Elders past, present and emerging.

The research was supported by the Australian Research Council (grants no. LP140100871 and DP180101229). Rob Lawrance and Georgie Luckock are thankfully acknowledged for providing access to their farm.
Purpose
The main aim of the Gatum Flux station was to quantify the fluxes in a winter-active perennial pasture that is minimally managed. The complete dataset can be used to relate the inter- and intra-annual variability of environmental variables with fluxes variability.
Data Quality Information

Data Quality Assessment Scope
local : dataset
<br>Processing levels</br> <br>Under each of the data release directories, the netcdf files are organised by processing levels (L3, L4, L5 and L6):<ul style="list-style-type: disc;"> <li>L3 (Level 3) processing applies a range of quality assurance/quality control measures (QA/QC) to the L1 data. The variable names are mapped to the standard variable names (CF 1.8) as part of this step. The L3 netCDF file is then the starting point for all further processing stages.</li> <li>L4 (Level 4) processing fills gaps in the radiation, meteorological and soil quantities utilising AWS (automated weather station), ACCESS-G (Australian Community Climate and Earth-System Simulator) and ERA5 (the fifth generation ECMWF atmospheric reanalysis of the global climate).</li> <li>L5 (Level 5) processing fills gaps in the flux data employing the artificial neural network SOLO (self-organising linear output map).</li> <li>L6 (Level 6) processing partitions the gap-filled NEE into GPP and ER.</li></ul> Each processing level has two sub-folders ‘default’ and ‘site_pi’:<ul style="list-style-type: disc;"> <li>default: contains files processed using PyFluxPro</li> <li>site_pi: contains files processed by the principal investigators of the site.</li></ul> If the data quality is poor, the data is filled from alternative sources. Filled data can be identified by the Quality Controls flags in the dataset. Quality control checks include: <ul style="list-style-type: disc;"> <li>range checks for plausible limits</li> <li>spike detection</li> <li>dependency on other variables</li> <li>manual rejection of date ranges</li></ul> Specific checks applied to the sonic and IRGA data include rejection of points based on the sonic and IRGA diagnostic values and on either automatic gain control (AGC) or CO<sub>2</sub> and H<sub>2</sub>O signal strength, depending upon the configuration of the IRGA.</br> <br>Gatum Pasture Flux Tower was established in February 2015, and was decommissioned in February 2022. The processed data release is currently ongoing, biannually.</br> <br></br>

Isaac P., Cleverly J., McHugh I., van Gorsel E., Ewenz C. and Beringer, J. (2017). OzFlux data: network integration from collection to curation, Biogeosciences, 14: 2903-2928
doi : https://doi.org/10.5194/bg-14-2903-2017

Created: 2023-10-06

Issued: 2023-12-21

Modified: 2024-05-03

Data time period: 2015-02-09 to 2021-12-31

This dataset is part of a larger collection

141.96084,-37.38943

141.960839,-37.389425

text: The Gatum Pasture flux station is located on private farmland in southwestern Victoria, approximately 300 km west of Melbourne.

Subjects
1 minute - < 1 hour | AIR TEMPERATURE | ATMOSPHERE | ATMOSPHERIC CARBON DIOXIDE | ATMOSPHERIC CHEMISTRY | ATMOSPHERIC PRESSURE | ATMOSPHERIC PRESSURE MEASUREMENTS | ATMOSPHERIC RADIATION | Atmospheric Sciences | ATMOSPHERIC TEMPERATURE | ATMOSPHERIC WATER VAPOR | BIOGEOCHEMICAL PROCESSES | BIOSPHERE | Campbell Scientific 108 | Campbell Scientific CPEC200 | Campbell Scientific CS616 | Campbell Scientific IRGASON | Campbell Scientific Q7.1 | Cubic Meter per Cubic Meter | Degree | EARTH SCIENCE | Earth Sciences | Ecological Applications | Environmental Science and Management | Environmental Sciences | EVAPOTRANSPIRATION | Ecosystem Function | Environmental Monitoring | GEOCHEMISTRY | Gatum Pasture Flux Station | Gram per Cubic Meter | HEAT FLUX | HUMIDITY | Hukseflux HFP01 | INCOMING SOLAR RADIATION | Kilogram per Kilogram | Kilograms per metre per square second | Kilopascal | Kipp&Zonen CNR4 | LAND PRODUCTIVITY | LAND SURFACE | LAND USE/LAND COVER | LONGWAVE RADIATION | Meter | Meter per Second | Micromoles per mole | Micromoles per square metre second | Millimetre | Millimoles per mole | Monin-Obukhov length (Meter) | Pasture | Percent | Point Resolution | Rotronic HC2(A)-S, HC2(A)-S3(H), HC2(A)-S-HH, HC2-S3CO3(-PT15), HC2(A)-SM and HC2-S and HC2A-S series | SHORTWAVE RADIATION | SOIL MOISTURE/WATER CONTENT | Soil Sciences | SOIL TEMPERATURE | SOLID EARTH | SURFACE TEMPERATURE | TERRESTRIAL ECOSYSTEMS | TRACE GASES/TRACE SPECIES | TURBULENCE | Unitless | WIND DIRECTION | WIND SPEED | Watt per Square Meter | air temperature (degree Celsius) | climatologyMeteorologyAtmosphere | degree Celsius | downward heat flux at ground level in soil (Watt per Square Meter) | ecosystem respiration (Micromoles per square metre second) | gross primary productivity (Micromoles per square metre second) | lateral component of wind speed (Meter per Second) | longitudinal component of wind speed (Meter per Second) | magnitude of surface downward stress (Kilograms per metre per square second) | mass concentration of water vapor in air (Gram per Cubic Meter) | mole fraction of carbon dioxide in air (Micromoles per mole) | mole fraction of water vapor in air (Millimoles per mole) | net ecosystem exchange (Micromoles per square metre second) | net ecosystem productivity (Micromoles per square metre second) | relative humidity (Percent) | soil temperature (degree Celsius) | specific humidity (Kilogram per Kilogram) | specific humidity saturation deficit in air (Kilogram per Kilogram) | surface air pressure (Kilopascal) | surface downwelling longwave flux in air (Watt per Square Meter) | surface downwelling shortwave flux in air (Watt per Square Meter) | surface friction velocity (Meter per Second) | surface net downward radiative flux (Watt per Square Meter) | surface upward flux of available energy (Watt per Square Meter) | surface upward latent heat flux (Watt per Square Meter) | surface upward mole flux of carbon dioxide (Micromoles per square metre second) | surface upward sensible heat flux (Watt per Square Meter) | surface upwelling longwave flux in air (Watt per Square Meter) | surface upwelling shortwave flux in air (Watt per Square Meter) | thickness of rainfall amount (Millimetre) | vertical wind (Meter per Second) | volume fraction of condensed water in soil (Cubic Meter per Cubic Meter) | water evapotranspiration flux (Unitless) | water vapor partial pressure in air (Kilopascal) | water vapor saturation deficit in air (Kilopascal) | wind from direction (Degree) | wind speed (Meter per Second) |

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Other Information
Point-of-truth metadata URL

uri : https://geonetwork.tern.org.au/geonetwork/srv/eng/catalog.search#/metadata/18cf8d9b-3e10-47f0-b77e-0cf32db76dc4

Isaac P., Cleverly J., McHugh I., van Gorsel E., Ewenz C. and Beringer, J. (2017). OzFlux data: network integration from collection to curation, Biogeosciences, 14: 2903-2928

doi : https://doi.org/10.5194/bg-14-2903-2017

PyFluxPro

uri : https://github.com/OzFlux/PyFluxPro/wiki