Copernicus GLO-90 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 90m (GLO-90) DSM through the <a href='https://registry.opendata.aws/copernicus-dem/'>public AWS S3 bucket established by Sinergise. </a> </p><br /> <b>Note:</b> <ul> <li>In the original datasets (available via OpenTopography bulk download or <a href='https://registry.opendata.aws/copernicus-dem/'>the Sinergise aws bucket</a>), the longitudinal spacing of cells increases as a function of latitude for latitudes north of 50N and south of 50S. <a href='https://copernicus-dem-30m.s3.amazonaws.com/readme.html'>See the original documentation </a> for details. However, 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 30m or 90m product <b>for data accessed through the web-interface or API</b>.</li><li>GLO-90 is available on a free basis for the general public under the terms and conditions of the License found <a href='https://spacedata.copernicus.eu/documents/20126/0/CSCDA_ESA_Mission-specific+Annex.pdf'>here</a></li> </ul>

<p>哥白尼数字地表模型（Copernicus DEM）是一款数字地表模型（Digital Surface Model，DSM），用于表征包含建筑物、基础设施与植被的地球表面。该DSM源自经过编辑的名为WorldDEM的数字地表模型，其中已完成水体平坦化处理与河流连贯流动修正。此外，相关团队还针对海岸线、海岸带、机场等特殊地物以及不合理的地形结构开展了编辑优化工作。</p> <p>WorldDEM产品基于TanDEM-X任务获取的雷达卫星数据构建，该任务由德国航空航天中心（DLR）代表德国联邦政府与空中客车防务与航天公司（Airbus Defence and Space）组建的公私合作伙伴关系资助。OpenTopography通过Sinergise搭建的公开AWS S3存储桶，向全球提供分辨率为90米的GLO-90数字地表模型。</p><br /> <b>注意：</b> <ul> <li>在原始数据集（可通过OpenTopography批量下载或<a href="https://registry.opendata.aws/copernicus-dem/">Sinergise的AWS存储桶</a>获取）中，北纬50°以北与南纬50°以南区域的单元格经度间距会随纬度变化而增大。详细信息请参阅<a href="https://copernicus-dem-30m.s3.amazonaws.com/readme.html">原始文档</a>。不过，为保证像素尺寸统一，OpenTopography会对北纬50°以北及南纬50°以南的数据进行重采样，以确保通过网页界面与应用程序编程接口（API）访问的数据集输出为统一的30米或90米产品。</li><li>GLO-90面向公众免费开放，使用需遵循<a href="https://spacedata.copernicus.eu/documents/20126/0/CSCDA_ESA_Mission-specific+Annex.pdf">此处</a>公布的许可条款与条件。</li> </ul>