Copernicus GLO-30 Digital Elevation Model

<p> The Copernicus DEM is a Digital Surface Model (DSM) which represents the surface of the Earth including buildings, infrastructure and vegetation. This DSM is derived from an edited DSM named WorldDEM, where flattening of water bodies and consistent flow of rivers has been included. In addition, editing of shore- and coastlines, special features such as airports, and implausible terrain structures has also been applied.</p> <p> The WorldDEM product is based on the radar satellite data acquired during the TanDEM-X Mission, which is funded by a Public Private Partnership between the German State, represented by the German Aerospace Centre (DLR) and Airbus Defence and Space. OpenTopography is providing access to the global GLO-30 Defence Gridded Elevation Data (DGED) 2023_1 version of the data hosted by ESA via the <a href='https://sentinels.copernicus.eu/web/sentinel/-/copernicus-dem-new-direct-data-download-access' target='_blank'> https PRISM service</a>. Details on the Copernicus DSM can be found on this <a href='https://spacedata.copernicus.eu/collections/copernicus-digital-elevation-model' target='_blank'>ESA site</a>.</a> </p><br /> <b><u>Important Notes:</b></u> <ul> <li>Previous to July 23rd 2024, OpenTopography was providing access to the Copernicus data through the <a href='https://registry.opendata.aws/copernicus-dem/' target='_blank'>public AWS S3 bucket established by Sinergise</a>. <b><u>As of July 23rd 2024, Opentopography is providing the DGED 2023_1 version of GLO-30 as downloaded directly from ESA (direct download instructions can be found <a href='https://sentinels.copernicus.eu/web/sentinel/-/copernicus-dem-new-direct-data-download-access' target='_blank'>here</a>)</b></u>.</li> <li>The original gridded data from ESA is in geographic coordinates where the longitudinal cell spacing increases as a function of latitude for regions north of 50N and south of 50S. For more details see the Grid Spacing section of the <a href='https://spacedata.copernicus.eu/documents/20123/122407/GEO1988-CopernicusDEM-SPE-002_ProductHandbook_I5.0+%281%29.pdf/706ee17d-2cce-f1fa-a73e-1686d28f09dd?t=1679657087883' target='_blank'>Copernicus DEM handbook</a>. In order to keep the pixel dimensions uniform, OpenTopography resamples data north of 50 degrees latitude and south of -50 degrees latitude in order to output a consistent 1 Arc-second product <b><u>for data accessed through the web-interface or API</b></u>. Users who need data north of 50N or south of 50S, and prefer to use the original, longitude-varying grid spacing can download cloud optimized geotiff (COG) versions of the tiles from our bulk download interface, or download the original data directly from ESA.</li> <li>The GLO-30 dataset is available on a free basis for the general public under the terms and conditions of the Copernicus license found <a href='https://docs.sentinel-hub.com/api/latest/static/files/data/dem/resources/license/License-COPDEM-30.pdf' target='_blank'>here.</a></li> </ul>

<p>哥白尼数字地表模型（Copernicus DEM）系一种数字地表模型（DSM），旨在呈现地球表面，包括建筑物、基础设施以及植被。该模型由名为WorldDEM的经过编辑的DSM派生而来，其中已包含水体平整化以及河流的一致流向。此外，还对海岸线、海岸带以及如机场等特殊特征以及不合理的地形结构进行了编辑。</p><p>WorldDEM产品基于德国航空航天中心（DLR）和空中客车防务与空间公司（Airbus Defence and Space）之间的公私合作伙伴关系资助的TanDEM-X任务期间获取的雷达卫星数据。OpenTopography通过位于欧洲空间局（ESA）的<a href='https://sentinels.copernicus.eu/web/sentinel/-/copernicus-dem-new-direct-data-download-access' target='_blank'>https PRISM服务</a>提供对全球GLO-30防御网格高程数据（DGED）2023_1版本的访问。有关哥白尼DSM的详细信息，可在本<a href='https://spacedata.copernicus.eu/collections/copernicus-digital-elevation-model' target='_blank'>欧洲空间局网站</a>找到。</p><br /><b><u>重要提示：</u></b><ul><li>截至2024年7月23日之前，OpenTopography通过由Sinergise建立的<a href='https://registry.opendata.aws/copernicus-dem/' target='_blank'>公共AWS S3存储桶</a>提供对哥白尼数据的访问。<b><u>自2024年7月23日起，Opentopography提供直接从欧洲空间局（ESA）下载的GLO-30 DGED 2023_1版本，下载说明可在此<a href='https://sentinels.copernicus.eu/web/sentinel/-/copernicus-dem-new-direct-data-download-access' target='_blank'>处</a>找到。</b></u></li><li>欧洲空间局（ESA）的原网格数据以地理坐标表示，其中对于北纬50度以上和南纬50度以下的区域，经度单元格间距随纬度变化而增加。更多详情请参阅<a href='https://spacedata.copernicus.eu/documents/20123/122407/GEO1988-CopernicusDEM-SPE-002_ProductHandbook_I5.0+%281%29.pdf/706ee17d-2cce-f1fa-a73e-1686d28f09dd?t=1679657087883' target='_blank'>哥白尼DEM手册</a>中的网格间距部分。为了保持像素尺寸的一致性，OpenTopography对北纬50度以上和南纬-50度以下的数据进行重采样，以便输出一致的1弧秒产品（适用于通过Web界面或API访问的数据）。需要北纬50度以上或南纬50度以下数据，并希望使用原始、经度变化的网格间距的用户，可以从我们的批量下载界面下载云优化地理TIFF（COG）版本的瓦片，或直接从欧洲空间局（ESA）下载原始数据。</li><li>GLO-30数据集根据哥白尼许可的条款和条件免费提供给公众，许可协议可在<a href='https://docs.sentinel-hub.com/api/latest/static/files/data/dem/resources/license/License-COPDEM-30.pdf' target='_blank'>此处</a>找到。</li></ul>