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NLDAS Elevation Datasets and Illustrations

The 1/8th-degree resolution topographic datasets and illustrations featured below are based on the GTOPO30 Global 30 Arc Second (~1-km) Elevation Dataset. In particular, average elevation values over the NLDAS domain were arrived at by isolating the relevant subset of data from the ~1-km global dataset, and then averaging up to the 1/8th-degree NLDAS resolution. Slope and aspect values were then derived from this 1/8th-degree data. Maximum, minimum, and standard deviation values, by contrast, were calculated directly from the ~1-km values which lie within each 1/8th-degree NLDAS grid box.

NLDAS Topographical Datasets

 

NLDAS Topographical Illustrations

Mean elevation (meters) over 1/8th-degree NLDAS domain. Values range up to 3600 meters over portions of the Rocky Mountains.

Maximum elevation (meters) over 1/8th-degree NLDAS domain. Values are greater than 3600 meters over portions of the Rocky Mountains.

Minimum elevation (meters) over 1/8th-degree NLDAS domain. Values range up to 3200 meters over portions of the Rocky Mountains.

Standard deviation (meters) over 1/8th-degree NLDAS domain. Values range up to 330 meters over portions of the Rocky Mountains.

Slope (degrees) over 1/8th-degree NLDAS domain. Values range up to ~4 meters over portions of the western U.S.

Aspect (degrees) over 1/8th-degree NLDAS domain. Values range from 0 to 360 degrees.