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Is there a way to obtain a netcdf file of the Koeppen-Geiger Climatic Zones?

aaaaa
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  • Does it have to be NetCDF, or could some other open format work, that you could easily convert to NetCDF yourself? – gerrit Oct 06 '23 at 09:39
  • thanks. the final file needs to be netcdf. how I get there is not of importance.. – aaaaa Oct 06 '23 at 13:26

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The Köppen-Geiger climate classification at a high 1‑km resolution for historical and future climate conditions (1901–2099) presented in Beck et al. (2018) can be downloaded in GTIFF format from the following URL: https://www.gloh2o.org/koppen/

Choosing your favourite framework, you can now easily convert this into netCDF format. Using e.g. the {terra} package (wrapping GDAL) in R, it's as easy as that:

library(terra)
#> terra 1.7.71

read as SpatRaster object


r <- rast("koppen_geiger_0p00833333.tif")
r
#> class       : SpatRaster 
#> dimensions  : 21600, 43200, 1  (nrow, ncol, nlyr)
#> resolution  : 0.008333333, 0.008333333  (x, y)
#> extent      : -180, 180, -90, 90  (xmin, xmax, ymin, ymax)
#> coord. ref. : lon/lat WGS 84 (EPSG:4326) 
#> source      : koppen_geiger_0p00833333.tif 
#> color table : 1 
#> name        : koppen_geiger_0p00833333


dump to disk in netCDF format


writeRaster(r, "koppen_geiger_0p00833333.nc", wopt = list(datatype="INT1U"))

Or you can use GDAL directly if you like:

gdal_translate -of netCDF koppen_geiger_0p00833333.tif koppen_geiger_0p00833333.nc
dimfalk
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