UAS remote sensing (Autel EVO II platform): Red-green-blue (RGB) imagery and derived products (Level 0-2 data), Seward Peninsula, Alaska, 2023

Airborne remote sensing data collected using a optical red-green-blue (RGB) sensor installed on an Autel EVO II unoccupied aerial system (UAS). This package includes data from 4 flights flown over the NGEE-Arctic Council Mile Marker (MM) 71 and Teller MM27 sites on the Seward Peninsula, Alaska USA, in July 2023. This package provides the Level 0 (raw, unprocessed) data collected by the platform and sensors, and Level 1-2 processed products including digital surface models (DSM), photo orthomosaics, canopy height models (CHM) and digital terrain models (DTM). Ancillary aircraft data, flight mission parameters, and general flight conditions provided by the onboard flight and data collection computers are also included. Data and metadata are provided as image (*.jpg, *.tif), point cloud (*.laz), tabular (*.csv) and *.pdf formats. Raw images are compressed as tar.gz. The metadata documents contain flight campaign, platform, sensor, flight and file metadata, along with a description of the data and file naming scheme. The Next-Generation Ecosystem Experiments: Arctic (NGEE Arctic), was a 15-year research effort (2012-2027) 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).

本数据集为搭载于Autel EVO II型无人航空系统（UAS）的光学红绿蓝（RGB）传感器所采集的机载遥感数据。本数据包包含2023年7月于美国阿拉斯加州苏厄德半岛的NGEE北极（NGEE-Arctic）理事会里程碑71号（MM 71）与特勒（Teller）里程碑27号（MM27）样区开展的4次飞行任务采集的数据。
本数据包涵盖平台与传感器采集的0级（原始未处理）数据，以及1至2级处理产品，包括数字表面模型（DSM）、正射影像镶嵌图、冠层高度模型（CHM）与数字地形模型（DTM）。此外还包含机载飞行与数据采集计算机记录的辅助飞行器数据、飞行任务参数及常规飞行状态信息。
数据与元数据以图像（*.jpg、*.tif）、点云（*.laz）、表格（*.csv）及*.pdf格式提供，原始影像以tar.gz格式压缩存储。元数据文档包含飞行项目、平台、传感器、飞行及文件元数据，同时附有数据与文件命名规则说明。
下一代北极生态系统实验（Next-Generation Ecosystem Experiments: Arctic, NGEE Arctic）是一项为期15年（2012-2027年）的研究计划，旨在通过深化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的理解，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北极项目设有两个野外研究样区：其一位于阿拉斯加州乌特恰维克（原巴罗，Utqiagvik (Barrow)）附近的北坡地区与巴罗环境观测站（BEO）的北极多边形苔原海岸带；其二位于阿拉斯加州诺姆以北苏厄德半岛的不连续多年冻土区的多个区域。通过观测、实验以及与现有数据集的综合分析，NGEE北极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（能源超算地球系统模型，E3SM），尤其是其陆面模型组件（ELM），提升了全球及泛北极尺度下的过程表征能力。