Radiocarbon in Ecosystem Respiration and Soil Pore-Space CO2 with Surface Gas Flux, Air Temperature, and Soil Temperature and Moisture, Utqiagvik (Barrow), Alaska, 2012-2014

Dataset includes Delta14C measurements made from CO2 that was collected and purified in 2012-2014 from surface soil chambers, soil pore space, and background atmosphere. In addition to 14CO2 data, dataset includes co-located measurements of CO2 and CH4 flux, soil and air temperature, and soil moisture. Measurements and field samples were taken from intensive study site 1 areas A, B, and C, and the site 0 and AB transects, from specified positions in high-centered, flat-centered, and low centered polygons. The column "sample_size" was added to "radiocarbon_field_Barrow_2012_2013_2014.csv" September 2018 with no changes to other data. This dataset contains one pdf and four csv files. The Next-Generation Ecosystem Experiments: Arctic (NGEE Arctic), was a research effort to reduce uncertainty in Earth System Models by developing a predictive understanding of carbon-rich Arctic ecosystems and feedbacks to climate. NGEE Arctic was supported by the Department of Energy's Office of Biological and Environmental Research. The NGEE Arctic project had two field research sites: 1) located within the Arctic polygonal tundra coastal region on the Barrow Environmental Observatory (BEO) and the North Slope near Utqiagvik (Barrow), Alaska and 2) multiple areas on the discontinuous permafrost region of the Seward Peninsula north of Nome, Alaska. Through observations, experiments, and synthesis with existing datasets, NGEE Arctic provided an enhanced knowledge base for multi-scale modeling and contributed to improved process representation at global pan-Arctic scales within the Department of Energy's Earth system Model (the Energy Exascale Earth System Model, or E3SM), and specifically within the E3SM Land Model component (ELM).本数据集涵盖2012至2014年间，从地表土壤箱、土壤孔隙及背景大气中采集并纯化的CO₂的Δ¹⁴C（Delta14C）测量数据。除¹⁴CO₂数据外，本数据集还包含同步获取的CO₂与CH₄通量、土壤及空气温度、土壤湿度测量数据。本次测量与野外样品采集于强化研究区1的A、B、C区域，以及0号研究区与AB样带，采样点位涵盖高中心、平中心及低中心冰楔多边形的指定位置。2018年9月，"radiocarbon_field_Barrow_2012_2013_2014.csv"文件中新增了样本量（sample_size）列，其余数据未作任何修改。本数据集包含1个PDF文件与4个CSV文件。下一代北极生态系统实验（Next-Generation Ecosystem Experiments: Arctic, NGEE Arctic）是一项旨在通过深化对富碳北极生态系统及其气候反馈机制的预测性认知，降低地球系统模型不确定性的研究项目。NGEE Arctic项目由美国能源部生物与环境研究办公室资助。NGEE Arctic项目设有两个野外研究站点：1) 位于美国阿拉斯加州乌特恰维克（原巴罗）附近的北坡巴罗环境观测站（BEO）内的北极多边形苔原沿海区域；2) 位于美国阿拉斯加州诺姆以北苏厄德半岛不连续多年冻土区的多处区域。通过观测、实验及与现有数据集的整合分析，NGEE Arctic项目为多尺度建模提供了更完善的知识库，并助力美国能源部地球系统模型（即能源百亿亿次地球系统模型，Energy Exascale Earth System Model, E3SM），尤其是其陆面模型模块（ELM），在全球及泛北极尺度上优化了过程表征方式。