SRTM Grid Cell Area (3" resolution) derived from 3" SRTM DEM-S

The SRTM grid cell area dataset has values of cell area in square metres.

The grid cell area product was derived from the Smoothed Digital Elevation Model (DEM-S; ANZCW0703014016), which was derived from the 1 second resolution SRTM data acquired by NASA in February 2000.

The calculation of grid cell area from the DEM-S accounted for the varying spacing between grid points in the geographic projection.

本航天飞机雷达地形测绘任务（Shuttle Radar Topography Mission，SRTM）格网单元面积数据集存储的数值为格网单元的面积，单位为平方米。

本格网单元面积产品源自平滑数字高程模型（Smoothed Digital Elevation Model，DEM-S；编号ANZCW0703014016），该模型的原始数据为美国国家航空航天局（National Aeronautics and Space Administration，NASA）于2000年2月获取的1秒分辨率SRTM数据。

基于DEM-S开展的格网单元面积计算，充分考虑了地理投影下格网点间距的差异性。