Copernicus GLO-90 DEM (ESA, 2021) – 250 m Downscaled Continental Mosaics: North America and Europe

These datasets are 250 m resolution continental mosaics derived from the Copernicus Global Digital Elevation Model (GLO-90), Version 1.1, released in March 2021 by the European Space Agency (ESA) and distributed via OpenTopography:portal.opentopography.org/raster?opentopoID=OTSDEM.032021.4326.1 The Copernicus GLO-90 DEM is a global, 90 m (approximately 3 arc-second) digital elevation model produced from TanDEM-X mission data and provided under the Copernicus Data and Information Policy, which allows free and open reuse under the Creative Commons Attribution 4.0 International (CC BY 4.0) license:creativecommons.org/licenses/by/4.0/ Each continental mosaic in this archive (North America, Europe) was generated by downloading 6 × 6 degree tiles from the OpenTopography GlobalDEM API (demtype = COP90), removing incomplete or empty tiles (≤ 1 MB), mosaicking aligned rasters using the R package terra v1.8-70, and aggregating (mean) from 90 m to 250 m (approximately 0.0025 degrees) resolution for computational efficiency. Files are single-band GeoTIFFs compressed with LZW and tiled for rapid access. Spatial reference: WGS 84 / EPSG 4326Elevation units: meters above mean sea level (EGM2008)Resolution: 0.0025 degrees (≈ 250 m)Extent:• North America: 170° W – 50° W, 10° N – 76° N• Europe: 25° W – 41° E, 35° N – 71° N These mosaics are suitable for continental-scale environmental modeling, terrain analysis, and species-distribution or landscape-ecology applications. Source dataset citation:European Space Agency (ESA) (2021). Copernicus GLO-90 Digital Elevation Model (Version 1.1) [Dataset]. Distributed by OpenTopography under the Copernicus Data and Information Policy. DOI: doi.org/10.5069/G9028PQB本数据集为250米分辨率的洲域镶嵌栅格，源自欧洲空间局（European Space Agency, ESA）2021年3月发布的哥白尼全球数字高程模型（Copernicus Global Digital Elevation Model, GLO-90）1.1版，由OpenTopography平台（portal.opentopography.org/raster?opentopoID=OTSDEM.032021.4326.1）分发。 哥白尼GLO-90数字高程模型（Digital Elevation Model, DEM）是基于TanDEM-X任务数据生成的全球90米（约3角秒）分辨率数字高程模型，依照《哥白尼数据与信息政策》发布，允许在知识共享署名4.0国际许可（Creative Commons Attribution 4.0 International, CC BY 4.0，creativecommons.org/licenses/by/4.0/）下免费开放复用。 本存档包含北美洲、欧洲两类洲域镶嵌数据集，其生成流程如下：从OpenTopography全球DEM应用程序编程接口（Application Programming Interface, API，demtype=COP90）下载6°×6°分块，剔除不完整或空文件（≤1MB），使用R语言扩展包terra v1.8-70对配准后的栅格进行镶嵌；为提升计算效率，将分辨率从90米以均值聚合方式转换为250米（约0.0025度）。所有输出文件均为单波段GeoTIFF格式，采用LZW压缩并分块存储，以实现快速访问。 空间参考系：WGS 84 / EPSG 4326 高程单位：平均海平面以上米（EGM2008基准） 分辨率：0.0025度（约250米） 覆盖范围： • 北美洲：西经170°—西经50°，北纬10°—北纬76° • 欧洲：西经25°—东经41°，北纬35°—北纬71° 此类镶嵌栅格适用于洲域尺度的环境建模、地形分析，以及物种分布或景观生态学相关研究应用。 源数据集引用格式：欧洲空间局（ESA）（2021）. 哥白尼GLO-90数字高程模型（版本1.1）[数据集]. 由OpenTopography依照《哥白尼数据与信息政策》分发。DOI：doi.org/10.5069/G9028PQB