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DEM Comparisons

DEM Comparisons. GMTED2010 to Global 90m DEM: At 30 ArcSec Resolution. Below Fusion Zone. Oregon, USA. DEM elev. range: -4 m to 4325 m. DEM elev. range: 0 m to 4227 m. Global DEM. GMTED2010. Below Fusion Zone. DEM Differences: Oregon , USA. Global DEM – GMTED2010.

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DEM Comparisons

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  1. DEM Comparisons GMTED2010 to Global 90m DEM: At 30 ArcSec Resolution

  2. Below Fusion Zone Oregon, USA DEM elev. range: -4 m to 4325 m DEM elev. range: 0 m to 4227 m Global DEM GMTED2010

  3. Below Fusion Zone DEM Differences: Oregon, USA Global DEM – GMTED2010 Difference range: -275 m to 419 m

  4. Histograms: Elevations across grids Scaling method: bilinear Mean product

  5. Histogram: Elevation differences

  6. Correlation Correlation Coefficient: 0.99991963

  7. Boxplots

  8. In Fusion Zone: Relatively Flat Terrain North-central Canada DEM elev. range: 47 m to 877 m DEM elev. range: 88 m to 624 m Global DEM GMTED2010

  9. In Fusion Zone: Relatively Flat Terrain DEM Differences: North Central Canada N60 Global DEM – GMTED2010 Difference range: -148m to 494 m Difference range: -275 m to 419 m

  10. Histograms: Elevations across grids Scaling method: bilinear Mean product

  11. Histogram: Elevation differences Almost 0.023

  12. Correlation Correlation Coefficient: 0.99611437

  13. Boxplots

  14. In Fusion Zone: Variable Terrain Northwest Canada DEM elev. range: 13 m to 2842 m DEM elev. range: 18 m to 2711 m Eastern Russia DEM elev. range: -218 m to 2267 m DEM elev. range: 15 m to 2233 m Global DEM GMTED2010

  15. In Fusion Zone: Variable Terrain DEM Differences Global DEM – GMTED2010 NW Canada Difference range: -938 m to 474 m N60 E. Russia Difference range: -275 m to 419 m Difference range: -335 m to 467 m

  16. Histograms: Elevations across grids Mean product Scaling method: bilinear

  17. Histogram: Elevation differences

  18. Correlation Correlation Coefficient: 0.9989906 Correlation Coefficient: 0.99898092

  19. Boxplots

  20. All Datasets Comparisons

  21. Boxplots Below fusion zone In fusion zone: Relatively Flat Terrain In fusion zone: Variable Terrain

  22. Boxplots- Zoomed Below fusion zone In fusion zone: Relatively Flat Terrain In fusion zone: Variable Terrain

  23. Working on Now: Filling null data in Russia Smoothing needed? What’s next? Compute TWI on regions of interest (both datasets)- compare Compare TWI to additional datasets? Only if direct comparison possible (projection, pre-processing)

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