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ATMOSPHERIC CARBON DIOXIDE

349 record(s)
 
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    The record contains leaf traits information measured on <i>Eucalyptus tereticornis</i> trees from the EucFACE site in Cumberland Plain in 2012. Data on tree height, leaf dry mass per unit leaf area (LMA), stomatal conductance to water vapour (<i>gs</i>), light saturated leaf net CO<sub>2</sub>assimilation rates (A<sub>sat</sub>) and maximum net CO<sub>2</sub> exchange rate at light- and CO<sub>2</sub>-saturation (A<sub>max</sub>) are provided.

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    This dataset contains leaf functional trait measurements describing leaf structure, chemistry and metabolism collected from the Warra Tall Eucalypt site, in summer 2012 and winter 2013.

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    This dataset contains leaf functional trait measurements describing leaf structure, chemistry and metabolism collected from the Alice Mulga site in 2014

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    This dataset contains leaf functional trait measurements describing leaf structure, chemistry and metabolism collected from the Cumberland Plain site in 2014.

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    This dataset contains leaf functional trait measurements describing leaf structure, chemistry and metabolism collected from the Calperum Mallee site, in 2013.

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    This dataset contains leaf functional trait measurements describing leaf structure, chemistry and metabolism collected from the Robson Creek Rainforest site, in the dry season 2012 and wet season 2014.

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    This dataset contains leaf functional trait measurements describing leaf structure, chemistry and metabolism collected from the Great Western Woodlands site in 2013.

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    This dataset contains leaf functional trait measurements describing leaf structure, chemistry and metabolism collected from the Daintree Rainforest, Cape Tribulation site, in the dry season 2012 and wet season 2014.

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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 classified as box woodland, dominated by two main eucalypt species: <em>Eucalyptus microcarpa</em> (grey box) and <em>Eucalyptus leucoxylon</em> (yellow gum). The site has an elevation of 165&nbsp;m. Mean annual precipitation measured by the nearby Bureau of Meteorology site is 558&nbsp;mm. Maximum temperatures range from 12.6&nbsp;°C (in July) to 29.8&nbsp;°C (in January), while minimum temperatures range from 3.2&nbsp;°C (in July) to 14.2&nbsp;°C (in February). Maximum temperatures vary on a seasonal basis by approximately 17.2&nbsp;°C and minimum temperatures by 11.0&nbsp;°C.</br> <br>The instrument mast is 36&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, incoming and reflected shortwave radiation and net radiation are measured above the canopy. Soil heat fluxes are measured and soil moisture content is gathered using time domain reflectometry.</br>

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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 (v3.4.15) 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).</br><br> Yarramundi Control Paddock site is located near Richmond, NSW (GPS coordinates -33.613469, 150.734864). The site is about 1&nbsp;km east of the Cumberland Plain Woodland flux tower. The climate is warm-temperate, with annual rainfall averaging 728&nbsp;mm, mean maximum temperature in January of 30.4&deg;C and mean minimum temperature in July of 3.6&deg;C (BOM station 067105). The elevation of the site is about 20&nbsp;m asl and the topography is flat. The soil is sandy loam in texture, organic carbon content is <1% nutrient availability is very low in the top 10&nbsp;cm; iron concretions below 50&nbsp;cm indicate poor drainage at times. The vegetation canopy is less than 1&nbsp;m tall, and the plant community is dominated by exotic herbaceous perennials, including <em>Conyza sumatrensis</em>, <em>Setaria parviflora</em>, <em>Cynodon dactylon</em>, <em>Commelina cyanea</em>, <em>Senecio madagascariensis</em>, and <em>Eragrostis curvula</em>. <br /> <br> Fluxes of water vapour, carbon dioxide and heat are quantified with the open-path eddy flux technique from a 2.5&nbsp;m tall mast. Additional measurements above the canopy include temperature, humidity, rainfall and net radiation, and photographs are taken several times per day to track canopy greenness.</br>