Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010)

The USGS and the NGA have collaborated on the development of a notably enhanced global elevation model named the GMTED2010 that replaces GTOPO30 as the elevation dataset of choice for global and continental scale applications.

The new model has been generated at three separate resolutions (horizontal post spacings) of 30 arc-seconds (about 1 kilometer), 15 arc-seconds (about 500 meters), and 7.5 arc-seconds (about 250 meters). This new product suite provides global coverage of all land areas from lat 84°N to 56°S for most products, and coverage from 84°N to 90°S for several products. Some areas, namely Greenland and Antarctica, do not have data available at the 15- and 7.5-arc-second resolutions because the input source data do not support that level of detail. An additional advantage of the new multi-resolution global model over GTOPO30 is that seven new raster elevation products are available at each resolution.

美国地质调查局（USGS）与美国国家地理空间情报局（NGA）合作开发了一款大幅升级的全球高程模型GMTED2010，该模型取代GTOPO30，成为全球及大洲尺度应用的首选高程数据集。

这款新模型提供三种独立分辨率（水平采样间距）：30角秒（约1千米）、15角秒（约500米）以及7.5角秒（约250米）。该新数据集套件覆盖绝大多数产品的全球陆域范围（北纬84°至南纬56°），部分产品的覆盖范围可扩展至北纬84°至南纬90°。格陵兰与南极洲部分区域不提供15角秒和7.5角秒分辨率的数据，原因是输入源数据无法支撑该级别的细节精度。相较于GTOPO30，这款多分辨率全球模型的额外优势在于，每种分辨率下均可提供七种全新的栅格高程产品。