Table of Contents
1. Executive Summary
2. Introduction
2.A. What GLOBE Is
2.B. A Brief History of GLOBE
2.C. Major Collaborators in GLOBE
2.D. Contributions Invited for Future Enhancements to GLOBE
3. Citation of GLOBE & Copyright Information
3.A. Citation of GLOBE
3.B. Copyright and Redistribution Information
4. General Characteristics of GLOBE
5. Data Set Development
5.A. DEM Sources and Processing
![tab](pixtab.gif) 5.A.i. Digital Terrain Elevation Data (DTED)
![tab](pixtab.gif) ![tab](pixtab.gif) 5.A.i.a. Source Characteristics
![tab](pixtab.gif) ![tab](pixtab.gif) 5.A.i.b. Derivation of the 30" DEM from Source Materials
![tab](pixtab.gif) ![tab](pixtab.gif) 5.A.i.c. Extracts from Prototype NIMA Documentation of DTED Level 0
![tab](pixtab.gif) ![tab](pixtab.gif) 5.A.i.d. Characteristics of 30" DEMs from DTED
![tab](pixtab.gif) 5.A.ii. DEM for Australia
![tab](pixtab.gif) 5.A.iii. DEM for Japan
![tab](pixtab.gif) 5.A.iv. DEM for Italy
![tab](pixtab.gif) 5.A.v. DEM for New Zealand
![tab](pixtab.gif) 5.A.vi. DEM for Greenland
![tab](pixtab.gif) 5.A.vii. Digital Chart of the World
![tab](pixtab.gif) 5.A.viii. Maps for Parts of Asia and South America
![tab](pixtab.gif) 5.A.ix. Maps for Part of Brazil
![tab](pixtab.gif) 5.A.x. Map for Part of Peru
![tab](pixtab.gif) 5.A.xi. Antarctic Digital Database
5.B. Assembly of GLOBE Version 1.0
![tab](pixtab.gif) 5.B.i. Quality Assessment
![tab](pixtab.gif) ![tab](pixtab.gif) 5.B.i.a. Japan
![tab](pixtab.gif) ![tab](pixtab.gif) 5.B.i.b. Italy
![tab](pixtab.gif) ![tab](pixtab.gif) 5.B.i.c. Australia
![tab](pixtab.gif) ![tab](pixtab.gif) 5.B.i.d. Greenland
![tab](pixtab.gif) ![tab](pixtab.gif) 5.B.i.e. Antarctica
![tab](pixtab.gif) ![tab](pixtab.gif) 5.B.i.f. Conterminous United States and Vicinity
![tab](pixtab.gif) ![tab](pixtab.gif) 5.B.i.g. DTED within 50o of the Equator
![tab](pixtab.gif) ![tab](pixtab.gif) 5.B.i.h. DTED Poleward of 50o North and South Latitudes
![tab](pixtab.gif) ![tab](pixtab.gif) 5.B.i.i. DCW vs. Other Cartographic Sources
![tab](pixtab.gif) 5.B.ii. Global Data Set Assembly
![tab](pixtab.gif) 5.B.iii. Georeferencing of GLOBE
![tab](pixtab.gif) 5.B.iv. Comparison of GLOBE with Other Available DEMs
![tab](pixtab.gif) 5.B.v. GLOBE's Development as Additional DEMs Are Created
6. Imperfections in Digital Elevation Data
6.A. Grid Spacing and Resolution
6.B. Topographic Detail and Accuracy
6.C. Production Artifacts
7. Accuracy
7.A. Horizontal Accuracy
![tab](pixtab.gif) 7.A.i. Data from Raster Data Sources
![tab](pixtab.gif) 7.A.ii. Data from Cartographic Sources
7.B. Vertical Accuracy
![tab](pixtab.gif) 7.B.i. Absolute Accuracy: Data from Raster Sources
![tab](pixtab.gif) 7.B.ii. Absolute Accuracy: Data from Cartographic Sources
![tab](pixtab.gif) 7.B.iii. Relative Accuracy
![tab](pixtab.gif) 7.B.iv. Summary: How to Use These Assessments
7.C. Additional Accuracy Assessments by Peer Reviewers
7.D. Additional Comments on Accuracy
8. Visualizations of GLOBE & Ancillary Data
8.A. Visualizations of GLOBE
8.B. Ancillary Data
![tab](pixtab.gif) 8.B.i. Source/Lineage File (with Contained Ocean Mask)
![tab](pixtab.gif) 8.B.ii. Slope and Aspect Data (Why Aren't They Provided?)
9. Upcoming Improvements
9.A. Integration with Other Data
9.B. Additional Contributions of Land Elevation Data
10. Data Distribution
11. Data Format and Importing GLOBE Data
11.A. Data and Source File-Naming Convention
11.B. MetaData File-Naming Convention and Directory Structure
11.C. Elevation Data File Sizes, Regional Extent and Statistics
11.D. Digital Elevation Data File Format
11.E. Source/Lineage Map
11.F. Header Files and Associated Files
![tab](pixtab.gif) 11.F.i. GeoVu Headers and Associated Files deprecated
![tab](pixtab.gif) 11.F.ii. Idrisi Headers and Associated Files
![tab](pixtab.gif) 11.F.iii. GRASS Headers and Associated Files
![tab](pixtab.gif) 11.F.iv.Arc/INFO & ArcView Headers and Associated Files
11.G. Obtaining and Importing GLOBE Data
![tab](pixtab.gif) 11.G.i. Obtaining the Data
![tab](pixtab.gif) 11.G.ii. GUNZIP the Compressed Data from the Web Site
![tab](pixtab.gif) 11.G.iii. Which Computer Are You Using?
![tab](pixtab.gif) 11.G.iv. Importing into NGDC's GeoVu deprecated
![tab](pixtab.gif) ![tab](pixtab.gif) 11.G.iv.a Accessing GLOBE Data on the CD-ROM
![tab](pixtab.gif) ![tab](pixtab.gif) 11.G.iv.b Accessing GLOBE Data Obtained from the GLOBE Web site
![tab](pixtab.gif) 11.G.v. Importing into Clark University's Idrisi
![tab](pixtab.gif) 11.G.vi. Importing into the U.S. Army Corps of Engineers' GRASS
![tab](pixtab.gif) ![tab](pixtab.gif) 11.G.vi.a Importing GLOBE Data Using a Sample GRASS Data Base
![tab](pixtab.gif) ![tab](pixtab.gif) 11.G.vi.b Importing GLOBE Data into Your Own GRASS Data Base
![tab](pixtab.gif) 11.G.vii. Importing into ERDAS
![tab](pixtab.gif) 11.G.viii. Importing into ESRI's Arc/INFO
![tab](pixtab.gif) 11.G.ix. Importing into ESRI's ArcView
![tab](pixtab.gif) 11.G.x. Importing into Adobe Photoshop
![tab](pixtab.gif) 11.G.xi. Importing into Other Software Packages
11.H. Projection Information
1.I. Georeferencing in GLOBE
12. Disclaimers
13. References
Appendix A. Participants in the GLOBE Project and Acknowledgments
Appendix B. Glossary of Acronyms
Appendix C. Federal Geographic Data Committee Metadata, and Global Change Master Directory .DIF for GLOBE
Histograms of Data
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