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By downloading the data you agree to cite the following peer reviewed article:
Karger, D.N., Conrad, O., Böhner, J., Kawohl, T., Kreft, H., Soria-Auza, R.W., Zimmermann, N.E., Linder, H.P. & Kessler, M. (2017) Climatologies at high resolution for the earth’s land surface areas. Scientific Data 4, 170122.
and:
Karger, D.N., Conrad, O., Böhner, J., Kawohl, T., Kreft, H., Soria-Auza, R.W., Zimmermann, N.E., Linder, H.P., Kessler, M. (2017) Data from: Climatologies at high resolution for the earth’s land surface areas. Dryad Digital Repository. https://doi.org/10.5061/dryad.kd1d4
If you want to download the files in floating point accuracy or bulk download via wget scripts, you can also access the files on our file server.
Datasets are either available in full floating point accuracy (float) or reduced to 2 byte integers (integer) recommended for users which do not need the full floating point accuracy.
Abbreviations:
- temp = monthly mean of daily mean temperature [°C(float),°C/10 or K/10 (integer)]
- tmax = monthly mean of daily maximum temperature [°C(float),°C/10 or K/10 (integer)]
- tmin = monthly mean of daily minimum temperature [°C(float),°C/10 or K/10 (integer)]
- prec = monthly precipitation sums [mm]
The integer versions of temperature grids are stored in tenths of Kelvins or tenths of °C. Because tenths of Kelvins are calculated by multiplying a value in Kelvin by 10 (likewise for Celsius), you may have seen the same units erroneously referred to as °C*10 and K*10 (e.g. on worldclim.org).

CHELSA is an ongoing research project and we are updating it continuously. There might still be problems with the datasets and we are happy for any reports of bugs. Known issues can be found here
Projection parameters:
- Geographic Coordinate System [EPSG 4326]
- WGS84
- proj4string= [+proj=longlat +datum=WGS84 +no_defs ]
The Digital elevation model on which CHELSA is based is GMTED2010, which can be downloaded here: Download GMTED2010 from the USGS website
If you having trouble downloading from this site, alternatively version 1.2 is also available at Dryad.
Older versions can be found here: ARCHIVE
No warranty or liability CHELSA is provided without any warranty of any kind whatsoever, either express or implied, including warranties of merchantability and fitness for a particular purpose. The creators of the product shall not be liable for incidental, consequential, or special damages arising out of the use of any data.