Fogg Dam OzFlux tower site
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The Fogg Dam flux station was located approximately 6km east of Black Jungle, Northern Territory: 12°32'42.79"S, 131°18'25.86"E. The site was situated within a wetland that flooded seasonally. The principle vegetation was Oryza rufipogon, Pseudoraphis spinescens and Eleocharis dulcis. The elevation was approximately 4m, with a neighbouring Bureau of Meteorology station recording 1411mm mean annual precipitation. Maximum temperatures ranged from 31.3°C (in June and July) to 35.6°C (in October), while minimum temperatures ranged from 14.9°C (in July) to 23.9°C (in December and February). Maximum temperatures varied on a seasonal basis by approximately 4.3°C and minimum temperatures by 9.0°C. The instrument mast was 15m 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 were measured above the canopy. Soil heat fluxes were measured and soil moisture content was 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.
福格水坝通量站(Fogg Dam flux station)位于北领地黑丛林以东约6公里处,地理坐标为南纬12°32′42.79″、东经131°18′25.86″。 该站点地处季节性泛滥湿地之中,优势植被为野生稻(Oryza rufipogon)、刺颖伪雀稗(Pseudoraphis spinescens)及荸荠(Eleocharis dulcis),海拔约4米;邻近的澳大利亚气象局(Bureau of Meteorology)站点记录的年平均降水量为1411毫米。 最高气温季节变化范围为31.3℃(6月、7月)至35.6℃(10月),最低气温季节变化范围为14.9℃(7月)至23.9℃(12月、2月);最高气温季节波动幅度约4.3℃,最低气温季节波动幅度约9.0℃。 观测桅杆高15米。采用开放式路径涡度通量技术(open-path eddy flux technique)开展热量、水汽与二氧化碳的通量观测。冠层上方部署了温度、湿度、风速、风向、降雨量、入射与反射短波辐射以及净辐射的观测仪器。土壤热通量通过时域反射仪(time domain reflectometry)进行测量,同时采集土壤含水率数据。 该站点的辅助观测项目还包括叶面积指数(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,研究团队沿观测样带开展了机载遥感观测,涵盖激光雷达(Lidar)与高光谱测量(hyperspectral measurements)。




