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Altimeter Corrected Elevations, Version 2 (ACE2)

Metadata Updated: December 6, 2023

The Altimeter Corrected Elevations, Version 2 (ACE2) data set, is the Global Digital Elevation Model (GDEM) created by using multi-mission Satellite Radar Altimetry with the Shuttle Radar Topography Mission (SRTM). It was created by synergistically merging the SRTM data set with Satellite Radar Altimetry within the region bounded by 60�N and 60�S. Over the areas lying outside the SRTM latitude limits, other sources have been used including Global Observations to Benefit the Environment (GLOBE) and the original Altimeter Corrected Elevations (ACE) Digital Elevation Model (DEM), together with new matrices derived from reprocessing the European Remote Sensing (ERS-1) Geodetic Mission data set with an enhanced re-tracking system, and the inclusion of data from other satellites. ACE2 was developed at resolutions of 3, 9 and 30 arc-seconds, and 5 arc-minutes. The data are distributed in little-endian format as 15 degree by 15 degree tiles, with the file name referring to the southwestern edge of the southwestern most pixel.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources



Metadata Created Date November 12, 2020
Metadata Updated Date December 6, 2023

Metadata Source

Harvested from NASA Data.json

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Additional Metadata

Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date December 6, 2023
Publisher SEDAC
Identifier C1603439745-SEDAC
Data First Published 2019-03-22
Language en-US
Data Last Modified 2019-03-22
Category DEDC, geospatial
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Citation Berry, P. A. M., R. Smith, and J. Benveniste. 2019-03-22. Altimeter Corrected Elevations, Version 2 (ACE2). Version 2.00. Palisades, NY. Archived by National Aeronautics and Space Administration, U.S. Government, Socioeconomic Data and Applications Center (SEDAC).
Creator Berry, P. A. M., R. Smith, and J. Benveniste
Graphic Preview Description Maps Download Page
Graphic Preview File
Harvest Object Id a071f5e2-3fd1-4d14-b6c4-134c80948996
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL
Metadata Type geospatial
Old Spatial -180.0 -90.0 180.0 90.0
Program Code 026:001
Related Documents
Release Place Palisades, NY
Source Datajson Identifier True
Source Hash d49b1c27ffcc3d695141352dc6174cc5a9cc25808c3c5e7fdda374e780234a3a
Source Schema Version 1.1
Temporal 1994-01-01T00:00:00Z/2005-12-31T00:00:00Z

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