NGEE Arctic, Canopy Spectral Reflectance, Utqiagvik (Barrow), Alaska, 2014-2016

Measurements of full-spectrum (i.e. 350-2500 nm) canopy spectral reflectance of Arctic plant species within the BEO, Barrow, Alaska. Spectra were collected using Spectra Vista Corporation (SVC) HR-2014i and Spectral Evolution (SE) PSR+ instruments mounted on a tripod or monopod together with a Spectralon white plate to calibrate each measurement under variable illumination conditions. Data were collected in Utqiagvik (Barrow), Alaska during the 2014 to 2016 period. Data package includes processed spectra (*.csv) files and original instrument output and processing files (*.zip).The Next-Generation Ecosystem Experiments: Arctic (NGEE Arctic), was a 10-year research effort (2012-2022) 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).

本数据集为美国阿拉斯加州巴罗（现名Utqiagvik）巴罗环境观测站（Barrow Environmental Observatory, BEO）区域内北极植物物种的全光谱（350~2500 nm）冠层光谱反射率测量数据。光谱数据采用Spectra Vista Corporation（SVC）HR-2014i与Spectral Evolution（SE）PSR+型仪器采集，仪器搭载于三脚架或单脚架上，配合Spectralon白板进行校准，以适配可变光照条件下的测量需求。数据采集工作于2014至2016年间，在阿拉斯加州Utqiagvik（原巴罗）地区开展。数据集包含处理后的光谱文件（*.csv格式）以及仪器原始输出与处理文件（*.zip压缩包）。下一代北极生态系统实验（Next-Generation Ecosystem Experiments: Arctic, NGEE Arctic）是一项为期10年（2012-2022年）的研究计划，旨在通过构建对富碳北极生态系统的预测性认知及其对气候的反馈机制，降低地球系统模型的不确定性。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Utqiagvik（巴罗）附近北坡的北极多边形苔原沿海区域的巴罗环境观测站（BEO）内；2）位于阿拉斯加州诺姆以北苏华德半岛的不连续多年冻土区域的多处区域。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，并推动了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），尤其是其陆面模型组件（E3SM陆面模型，ELM）在全球泛北极尺度下的过程表征精度提升。