Table 2 Global simulated error assessment results

From: New elevation data triple estimates of global vulnerability to sea-level rise and coastal flooding

Error resolution

Percentile

5th

50th

95th

Pixel (3 arcseconds)

370 (−0%)

370

370 (+0%)

1 km

370 (−0%)

370

380 (+3%)

0.1 deg

380 (−3%)

390

400 (+3%)

0.25 deg

380 (−3%)

390

420 (+8%)

0.5 deg

370 (−8%)

400

420 (+5%)

1 deg

360 (−10%)

400

440 (+10%)

  1. 100 simulated error surfaces are generated at each listed spatial resolution to represent different spatial scales of error autocorrelation, and added to CoastalDEM. 1-pixel simulations have no autocorrelation. Population exposure below 2 m local MHHW is computed for each simulated elevation dataset (each retaining CoastalDEM’s original 3 arcsecond resolution), and the 5th/50th/95th percentiles of these results are presented. Percent differences from the median are provided for the 5th and 95th percentiles in parentheses. Units are in millions of people. Population exposure based on the unmodified CoastalDEM dataset is 400 M.
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