Defense Mapping Agency (DMA) U.S. 30-Second Elevations
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下载链接：
https://rda.ucar.edu/datasets/d756001/
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资源简介：
This dataset contains elevations at every 30 seconds of latitude and longitude for the region from 23N to 51N and 130W to 60W (the contiguous United States). These data are current as of August, 1989.
提供机构：
NSF National Center for Atmospheric Research
创建时间：
2021-09-22
