Elevation on a template grid from the Copernicus GLO-90 DEM

Averages the Copernicus DEM GLO-90 (public cloud-optimised GeoTIFFs on AWS open data) onto the grid of template, reading each 1-degree tile over /vsicurl/. Ground covered by no tile (open ocean away from land) is NA; sea inside a tile is 0 m, as GLO-90 records it, so NA is not a land mask. Used to drive climr's lapse-rate downscaling on the same grid as the CGIAR AET, so no input is resampled twice.

Usage

wet_dem_glo90(template, dir = "data/dem", overwrite = FALSE)

Arguments

template

Path to a raster (or a SpatRaster) whose grid is the output grid, in EPSG:4326.

dir

Cache directory.

overwrite

Logical. Rebuild even when cached.

Value

Path to a one-layer GeoTIFF of elevation (m), named elev.

Details

Copernicus DEM (c) DLR e.V. 2010-2014 and (c) Airbus Defence and Space GmbH 2014-2018, provided under COPERNICUS by the European Union and ESA.