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HUMIDITY

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    The data set contains information on air temperature and relative humidity at heights 1m and 3m from three sensors at each height and a global solar radiation at 3m, mean wind speed and gust speed at 3m measured from the Bowen ratio energy balance Flux tower site, Great Western Woodlands Site.

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    Data on weather conditions at the Great Western Woodlands site collected between 2012 - 2016. Data includes half-hourly records of radiation and net radiation at 3 m (2012) and 36 m (2013 - 2016), mean wind speed and wind direction at 3 m (2012) and 36 m (2013 - 2016), air temperature and relative humidity at 3 m (2012) and 36 m (2013 - 2016), atmospheric pressure at 3 m (2012) and 36 m (2013 - 2016), ground heat flux at -8cm, and rainfall at 0.5m

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    Data on weather conditions at the Warra Tall Eucalypt site collected between 2004 - 2012. Data includes daily maximum and minimum temperatures, wind speed, wind direction, rainfall and humidity.

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    Data on weather conditions at the Robson Creek Rainforest site collected between 2010 - 2014. Weather station data includes daily records of air temperature, wind speed, solar radiation, relative humidity and rainfall.

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    Data on weather conditions at the Daintree Rainforest, Cow Bay site collected between 2008 - 2014. Weather station data includes daily records of air temperature, wind speed, solar radiation, relative humidity and rainfall.

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    Data on weather conditions at the Daintree Rainforest, Cape Tribulation site collected between 2006 - 2014. Weather station data includes daily records of air temperature, wind speed, solar radiation, relative humidity and rainfall.

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    <br>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 (v3.5.0) 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).</br> <br>The site is located on a low lying plain dominated by Mitchell Grass (<em>Astrebla</em> spp.). Elevation of the site is close to 250&nbsp;m and mean annual precipitation at a nearby Bureau of Meteorology site is 640&nbsp;mm. Maximum temperatures range from 28.4&nbsp;°C (in June/ July) to 39.1&nbsp;°C (in December), while minimum temperatures range from 11.2&nbsp;°C (in July) to 24.4&nbsp;°C (in December).</br> <br>The instrument mast is 5&nbsp;m tall. Heat, water vapour and carbon dioxide measurements are taken using the open-path eddy flux technique. Temperature, humidity, wind speed, wind direction, rainfall and net radiation are measured. Soil heat fluxes are measured and soil moisture content is gathered using time domain reflectometry.</br> <br>Ancillary measurements taken at the site include LAI, leaf-scale physiological properties (gas exchange, leaf isotope ratios, nitrogen and chlorophyll concentrations), vegetation optical properties and soil physical properties. Airborne based remote sensing (Lidar and hyperspectral measurements) was carried out at the site in September 2008. Biomass harvest measured: mean live biomass 0.00&nbsp;gm<sup>-2</sup> (standard error: 0.00), mean standing dead biomass 163.42&nbsp;gm<sup>-2</sup> (standard error: 16.73), mean litter biomass 148.99&nbsp;gm<sup>-2</sup> (standard error: 21.32), total mean biomass 312.40&nbsp;gm<sup>-2</sup> (standard error: 30.80). Soil consists of: clay 14.47%, silt 51.23%, sand 34.30%.</br>

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    This data release consists of flux tower measurements of the exchange of energy and mass between the surface and the atmospheric boundary-layer in semi-arid eucalypt woodland using eddy covariance techniques. It been processed using PyFluxPro (v3.3.3) as described in Isaac et al. (2017), <a href="https://doi.org/10.5194/bg-14-2903-2017">https://doi.org/10.5194/bg-14-2903-2017</a>. PyFluxPro takes data recorded at the flux tower and process this data to a final, gap-filled product with Net Ecosystem Exchange (NEE) partitioned into Gross Primary Productivity (GPP) and Ecosystem Respiration (ER). For more information about the processing levels, see <a href="https://github.com/OzFlux/PyFluxPro/wiki">https://github.com/OzFlux/PyFluxPro/wiki</a>. <br /> <br /> The Robson Creek site is part of the FNQ Rainforest Site along with affiliated monitoring sites at Cape Tribulation (Daintree Rainforest Observatory) and Cow Bay (Daintree Discovery Centre). The flux station is located at the foothills of the Lamb Range, part of the Wet Tropics World Heritage Area, and north-west of a 25 hectare census plot established by CSIRO in 2012. <br /> The forest is classified as Regional Ecosystem (RE) 7.3.36a, complex mesophyll vine forest (Queensland Government 2006). There are 211 species in the adjacent 25ha plot, and average tree height is 28m, ranging from 23 to 44 m. Elevation of the site is 711m and mean annual precipitation is 2000mm. The upland rainforests of the Atherton Tablelands are some of the most biodiverse and carbon dense forests in Australia. The landform of the 25ha plot which is in the dominant wind direction from the station is moderately inclined with a low relief, a 30 m high ridge running north/south through the middle of the plot and a 40 m high ridge running north/south on the eastern edge of the plot. <br /><br /> The instruments are mounted on a free standing station at 40m. Fluxes of heat, water vapour and carbon dioxide are measured using the open-path eddy flux technique. Supplementary measurements above the canopy include temperature, humidity, windspeed, wind direction, rainfall, incoming and reflected shortwave radiation and net radiation. <br /><br />Note: Level 3 data for 2015 - 2018 were updated in 2018 correcting a rainfall issue in 2015 and a wind direction issue 2016 - 2018. A data gap from 2019-02-14 - 2019-02-21 was due to a major power supply failure.

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    This dataset consists of measurements of the exchange of energy and mass between the surface and the atmospheric boundary-layer in woodland savanna using eddy covariance techniques.<br /><br /> The site is woodland savanna with an overstory co-dominated by tree species <em>E. tetrodonta</em>, <em>C. latifolia</em>, <em>Terminalia grandiflora</em>, <em>Sorghum sp.</em> and <em>Heteropogon triticeus</em>. Average canopy height measures 16.4 m. <br />Elevation of the site is close to 110m and mean annual precipitation at a nearby Bureau of Meteorology site is 1170mm. Maximum temperatures range from 37.5°C (in October) to 31.2°C (in June), while minimum temperatures range from 12.6°C (in July) to 23.8°C (in January). Maximum temperatures range seasonally by 6.3°C and minimum temperatures by 11.2°C. <br /><br />The instrument mast is 23 meters tall. Heat, water vapour and carbon dioxide measurements are taken using the open-path eddy flux technique. Temperature, humidity, wind speed, wind direction, rainfall, incoming and reflected shortwave radiation and net radiation are measured above the canopy.<br />Ancillary measurements taken at the site include LAI, leaf-scale physiological properties (gas exchange, leaf isotope ratios, N and chlorophyll concentrations), vegetation optical properties and soil physical properties. Airborne based remote sensing (Lidar and hyperspectral measurements) was carried out across the transect in September 2008. <br /><br />This data is also available at http://data.ozflux.org.au .

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    This dataset consists of measurements of the exchange of energy and mass between the surface and the atmospheric boundary-layer from bare earth using eddy covariance techniques.<br /><br /> This is a topographically flat area, primarily comprised of the following soil types: sandy loams, scattered clays, red brown earths, transitional red brown earth, sands over clay and deep sands. Stream valleys and layered soil and sedimentary materials are found across the landscape. <br /><br /> The flux station tower extends to 20m, however flux measurements are recorded from slightly lower than this. Mean annual precipitation from a nearby Bureau of Meteorology site measured 465 mm. Maximum temperatures ranged from 37.4°C (in January) to 16.6°C (in July), while minimum temperatures ranged from 29.0°C (in January) to 11.8°C (in July). Maximum temperatures varied on a seasonal basis by approximately 20.8°C and minimum temperatures by 17.2°C. <br /> The site is within a wider research area (60 x 60 km) that supports a network of flux stations, which have been in operation since late 2001 onwards.<br /><br /> This data is also available at http://data.ozflux.org.au .