Otway 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 Otway flux station was located at Narrinda South in south west Victoria, Australia.The pasture was grazed by dairy cattle with average grass height of 0.1 m. Annual average rainfall at the site was around 800 mm and was only moderately seasonal. Mean daily temperature ranged from 25 °C in February to 12 °C in July. The flux station was situated on a 10 m tower. Fluxes of heat, water vapour and carbon dioxide were measured using the open-path eddy covariance technique. Supplementary measurements included temperature, humidity, rainfall, total solar, photosynthetically active radiation (PAR) and net radiation. Soil temperature and heat flux were also measured. The Otway flux station was established in February 2007 on private land at Nirranda South and managed by CSIRO Marine and Atmospheric Research staff as part of the Cooperative Research Centre for Greenhouse Gas Technologies.

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之间能量与物质交换的通量塔观测数据。数据处理采用PyFluxPro（v3.4.17）完成，处理流程参照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）与生态系统呼吸量（Ecosystem Respiration, ER）。
本数据集的奥特韦通量站（Otway flux station）位于澳大利亚维多利亚州西南部的纳林达南（Narrinda South）。该站点的牧场由乳牛放牧，平均草高为0.1米。站点年平均降雨量约为800毫米，季节变化相对平缓。日平均温度范围为2月的25℃至7月的12℃。通量观测塔架设于10米高的塔台之上。热通量、水汽通量与二氧化碳通量采用开路式涡度协方差技术进行观测。辅助观测项目包括气温、湿度、降雨量、总太阳辐射、光合有效辐射（Photosynthetically Active Radiation, PAR）与净辐射，同时还开展了土壤温度与土壤热通量的观测工作。奥特韦通量站于2007年2月在纳兰达南（Nirranda South）的私人土地上建成，作为温室气体技术合作研究中心的项目之一，由澳大利亚联邦科学与工业研究组织海洋与大气研究部（CSIRO Marine and Atmospheric Research）人员负责运维管理。