ArcticDEM

ArcticDEM - 2m GSD Digital Elevation Models (DEMs) and mosaics from 2007 to the present. The ArcticDEM project seeks to fill the need for high-resolution time-series elevation data in the Arctic. The time-dependent nature of the strip DEM files allows users to perform change detection analysis and to compare observations of topography data acquired in different seasons or years. The mosaic DEM tiles are assembled from multiple strip DEMs with the intention of providing a more consistent and comprehensive product over large areas. ArcticDEM data is constructed from in-track and cross-track high-resolution (~0.5 meter) imagery acquired by the Maxar constellation of optical imaging satellites.

ArcticDEM - 2米地面分辨率数字高程模型（DEM）及其镶嵌图，数据采集自2007年至今。ArcticDEM项目旨在满足北极地区对高分辨率时间序列高程数据的迫切需求。条带DEM文件的时序性特性使用户能够执行变化检测分析，并比较在不同季节或年份获取的地形数据观测。镶嵌DEM图块由多个条带DEM拼接而成，旨在为大面积区域提供更加一致和全面的产品。ArcticDEM数据由Maxar光学成像卫星星座沿轨和横轨获取的高分辨率（约0.5米）影像构建而成。

搜集汇总

背景与挑战

背景概述

ArcticDEM是一个提供北极地区高分辨率（2米地面采样距离）数字高程模型（DEM）和镶嵌图的数据集，覆盖时间从2007年至今，基于Maxar卫星约0.5米分辨率的光学影像构建，支持时间序列分析和变化检测。数据集以开放许可证（CC BY 4.0）发布，由Polar Geospatial Center管理，并通过AWS S3存储桶提供免费访问，更新频率为每年两次添加新DEM条带。