Download the rasters as GeoTIFF

What to download

How the file is generated

1. The server delivers the month's Zarr. Each month is a single compressed object, with values stored as integers (precipitation in thousandths of a mm).
2. Your browser decompresses it and converts each integer to the dataset's unit using the scale factor declared in the Zarr.
3. It writes the GeoTIFF in Float32, compressed (DEFLATE), with EPSG:4326 and nodata = −9999: one per month, or one per year with one band per month. If several files are produced, they are bundled into a ZIP together with a metadata.json.

The file is identical, pixel by pixel, to the one produced by the Python reference script (export_geotiffs.py). No GeoTIFF is stored on the server.

From Python

For analysis, read the Zarr directly: xarray downloads only the months and the area you request.

# pip install xarray zarr fsspec aiohttp rioxarray
import xarray as xr, rioxarray
ds = xr.open_zarr("…")
pp = ds["precipitation"].sel(time="2018-02-01", x=slice(-69.6, -69.0), y=slice(-18.0, -18.6))
pp.rio.write_crs("EPSG:4326").rio.to_raster("putre_2018_02.tif")