Coincident Above- and Below-ground Autonomous Monitoring to Quantify Co-variability in Permafrost, Soil and Vegetation Properties in Arctic Tundra: Supporting Data

These data are provided in support of an NGEE Arctic publication (Dafflon et al., 2017) available at doi: 10.1002/2016JG003724 The dataset (221 *.csv data files) contains measurements obtained through 1) electrical resistivity tomography (ERT) to monitor soil properties, 2) pole-mounted optical cameras to monitor vegetation dynamics, and 3) point probes to measure soil temperature, and periodic manual measurements of thaw layer thickness, snow thickness and soil dielectric permittivity at a study site in the Barrow Environmental Observatory (BEO) in 2013 and 2014. The BEO is located within the Arctic coastal region, about 6 km from the ocean shore and the village of Barrow, AK. 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).

本数据集用于支撑发表于NGEE Arctic的研究论文（Dafflon等，2017），论文DOI为10.1002/2016JG003724。本数据集包含221个*.csv数据文件，涵盖三类观测数据：1）用于监测土壤特性的电阻率层析成像（electrical resistivity tomography, ERT）数据；2）立杆式光学相机获取的植被动态监测数据；3）用于测量土壤温度的点式测温探针数据，以及2013年与2014年在阿拉斯加巴罗环境观测站（Barrow Environmental Observatory, BEO）研究场地开展的解冻层厚度、积雪厚度与土壤介电常数的周期性人工测量数据。
巴罗环境观测站位于北极沿海区域，距阿拉斯加巴罗镇与海岸线约6公里。
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的预测性认知，降低地球系统模型不确定性的研究项目。该项目由美国能源部生物与环境研究办公室资助。NGEE Arctic设有两个野外研究站点：1）位于阿拉斯加州乌特恰维克（原巴罗镇）附近北坡的巴罗环境观测站北极多边形苔原沿海区域；2）阿拉斯加州诺姆以北苏华德半岛不连续多年冻土区的多处区域。
通过观测、实验与现有数据集综合分析，NGEE Arctic为多尺度建模提供了增强型知识库，并助力美国能源部地球系统模型——能源极端尺度地球系统模型（Energy Exascale Earth System Model, E3SM），尤其是其陆面模型模块（ELM）在全球泛北极尺度上的过程表征精度提升。