Leaf Mass Area, Leaf Carbon and Nitrogen Content, Barrow, Alaska, 2012-2016

Carbon, Nitrogen and Leaf Mass Area of leaves sampled from the Barrow Environmental Observatory, Barrow, Alaska. Species measured; Arctophila fulva, Arctagrostis latifolia, Carex aquatilis, Dupontia fisheri, Eriophorum angustifolium, Petasites frigidus, Salix pulchra, Vaccinium vitis-idaea, Salix rotundifolia, Luzula arctica, Saxifraga punctata and Potentilla hyparctica. Samples collected in vegetation plots and outside vegetation plots over an area of approximate 1 km2 centered at 71.275 degrees N, 156.641 degrees W. This dataset contains 3 files in csv, xlsx, and pdf formats.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).

本数据集采集自阿拉斯加巴罗环境观测站（Barrow Environmental Observatory, BEO）的叶片样本，测定指标涵盖叶片碳含量、氮含量与叶质量面积比。本次测定的物种包括：富毛北极茅（Arctophila fulva）、宽叶北极禾（Arctagrostis latifolia）、水苔草（Carex aquatilis）、费希尔冰原草（Dupontia fisheri）、窄叶羊胡子草（Eriophorum angustifolium）、冷香蜂斗菜（Petasites frigidus）、美丽柳（Salix pulchra）、越橘（Vaccinium vitis-idaea）、圆叶柳（Salix rotundifolia）、北极地杨梅（Luzula arctica）、点虎耳草（Saxifraga punctata）、北极委陵菜（Potentilla hyparctica）。样本采集于以北纬71.275°、西经156.641°为中心、面积约1平方千米的区域内的植被样地与非植被样地中。
本数据集包含3个文件，格式分别为CSV、XLSX及PDF。下一代北极生态系统实验（Next-Generation Ecosystem Experiments: Arctic, NGEE Arctic）是一项旨在通过构建富碳北极生态系统的预测性理解及其气候反馈机制，降低地球系统模型不确定性的研究计划。该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）位于阿拉斯加乌特恰维克（原巴罗）附近北坡的巴罗环境观测站区域内的北极多边形苔原沿海地带；2）阿拉斯加诺姆以北苏华德半岛的不连续永久冻土区域的多处地点。
通过观测、实验及与现有数据集的整合分析，NGEE Arctic为多尺度建模提供了增强型知识库，并助力提升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（ELM）——在全球泛北极尺度下的过程表征能力。