Fogg Dam Flux Data Release 2024_v2

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 (v3.4.17) 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 site is situated within a wetland that flooded seasonally. The principal vegetation is Oryza rufipogon, Pseudoraphis spinescens and Eleocharis dulcis. The elevation is approximately 4 m, with a neighbouring Bureau of Meteorology station recording 1411 mm mean annual precipitation. Maximum temperatures range from 31.3 °C (in June and July) to 35.6 °C (in October), while minimum temperatures range from 14.9 °C (in July) to 23.9 °C (in December and February). Maximum temperatures vary on a seasonal basis by approximately 4.3 °C and minimum temperatures by 9.0 °C.
The instrument mast is 15 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. Ancillary measurements being 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 across the site in September 2008.

本数据集包含采用涡度协方差技术获取的地表与大气边界层间能量及物质交换通量塔观测数据。数据处理采用PyFluxPro（v3.4.17）工具，处理流程遵循Isaac等人（2017年）的研究方法。PyFluxPro可生成经过间隙填充的最终数据集，将生态系统净交换量（Net Ecosystem Exchange, NEE）划分为总初级生产力（Gross Primary Productivity, GPP）与生态系统呼吸（Ecosystem Respiration, ER）。
该观测站点位于季节性淹水的湿地内。主要植被为普通野生稻（Oryza rufipogon）、刺稃硬稃稗（Pseudoraphis spinescens）和荸荠（Eleocharis dulcis）。站点海拔约4米，邻近的澳大利亚气象局（Bureau of Meteorology）观测站记录的年平均降水量为1411毫米。最高气温介于31.3℃（6-7月）至35.6℃（10月）之间，最低气温则为14.9℃（7月）至23.9℃（12月与2月）之间。最高气温的季节波动幅度约为4.3℃，最低气温的季节波动幅度则为9.0℃。
观测塔架高度为15米。采用开路式涡度通量技术测定热量、水汽与二氧化碳通量。冠层上方布设传感器，测定气温、空气湿度、风速、风向、降雨量、入射与反射短波辐射以及净辐射量。采用时域反射仪（time domain reflectometry, TDR）测定土壤热通量与土壤含水率。站点同步开展的辅助观测包括叶面积指数（Leaf Area Index, LAI）、叶片尺度生理特性（气体交换、叶片同位素比值、氮与叶绿素浓度）、植被光学特性以及土壤物理特性。2008年9月，研究团队对整个站点开展了机载遥感观测，涵盖激光雷达（Lidar）与高光谱测量内容。