GEOID12A-NAD83 datum offset for CONUS

This TIF file is a raster that describes the vertical difference between the GEOID12A and NAD83 vertical datums, covering the Contiguous United States. This raster was developed as a part of the NEON-GEDI tutorials found on neonscience.org本TIF（Tagged Image File Format）栅格文件为覆盖美国本土（Contiguous United States）的栅格数据集，用于描述GEOID12A与NAD83垂直基准面之间的高程差值。该数据集是发布于neonscience.org的NEON-GEDI教程的组成部分。