Dry River Flux Data Collection

This dataset consists of measurements of the exchange of energy and mass between the surface and the atmospheric boundary-layer in open forest savanna using eddy covariance techniques. The site is classified as open forest savanna. The overstory is co-dominated by tree species E. tetrodonta, E. dichromophloia, C. terminalis, Sorghum intrans, S. plumosum, Themeda triandra and Chrysopogon fallax, with canopy height averaging 12.3m. Elevation of the site is close to 175m and mean annual precipitation from a nearby Bureau of Meteorology site measures 895.3mm. Maximum temperatures range from 29.1°C (in June) to 37.6°C (in July), while minimum temperatures range from 14.6°C (in July) to 24.8°C (in November). Maximum temperatures vary seasonally by 8.5°C and minimum by 10.2°C. The instrument mast is 15 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. Soil heat fluxes are measured and soil moisture content is gathered using time domain reflectometry. 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. This data is also available at http://data.ozflux.org.au .