Vegetation Warming Experiment: Chamber and ambient plot digital camera imagery for vegetation phenology, Utqiagvik (Barrow), Alaska, 2017

Time lapse photography (*.jpg) of experimental plots within five warming chambers (ZPWs) and paired control plots located on the Barrow Environmental Observatory (BEO), Barrow (now Utqiagvik), Alaska. Images were recorded from 21 June to 18 September, 2017 to capture vegetation dynamics during the growing season. Vegetation phenology, including green up and senescence were captured. Images were recorded daily at 30 minute intervals, from 11:00-14:30 Alaska daylight time (AKDT, UTC-8), using Wingscapes TimelapseCam cameras. The target species was Petasites frigidus. Also included multiple metadata files including reporting formats as *.pdf and *.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).

延时摄影图像（*.jpg）采集自阿拉斯加巴罗（现名乌特恰维克）的巴罗环境观测站（Barrow Environmental Observatory, BEO）内的5个增温箱（ZPWs）实验样地及其配对对照样地。拍摄时段为2017年6月21日至9月18日，用于捕捉生长季内的植被动态。该数据集记录了植被物候变化，包括返青与衰老过程。拍摄采用Wingscapes TimelapseCam相机，按照阿拉斯加夏令时（Alaska Daylight Time, AKDT, UTC-8）每日11:00至14:30，以30分钟为间隔进行拍摄。研究目标物种为北极蜂斗菜（Petasites frigidus）。数据集同时包含多种元数据文件，其中报告类文件格式为*.pdf与*.csv。下一代北极生态系统实验（Next-Generation Ecosystem Experiments: Arctic, NGEE Arctic）是一项研究项目，旨在通过构建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项目设有两个野外研究站点：其一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（BEO）内的北极多边形苔原沿海区域；其二位于阿拉斯加诺姆以北苏华德半岛的不连续多年冻土区的多处区域。通过观测、实验以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（Energy Exascale Earth System Model, E3SM），尤其是其陆面模型组件（ELM）在全球及泛北极尺度上改进了过程表征能力。