Climatologies at high resolution for the earth’s land surface areas
CHELSA – Climatologies at high resolution for the earth’s land surface areas
CHELSA is a high resolution (30 arc sec) climate data set for the earth land surface areas currently under development in coorporation with the Department of Geography of the University of Hamburg (Prof. Dr. Jürgen Böhner, Dr. Olaf Conrad, Tobias Kawohl), the Swiss Federal Institute for Forest, Snow and Landscape Research WSL (Prof. Dr. Niklaus Zimmermann), the University of Zurich (Dr. Dirk N. Karger, Dr. Michael Kessler), and the University of Göttingen (Prof. Dr. Holger Kreft).It includes monthly mean temperature and precipitation patterns for the time period 1979-2013.CHELSA is based on a quasi-mechanistical statistical downscaling of the ERA interim global circulation model (http://www.ecmwf.int/en/research/climate-reanalysis/era-interim) with a GPCC bias correction (https://www.dwd.de/EN/ourservices/gpcc/gpcc.html) and is freely available in the download section.
High resolution (30 arcsec, ~1 km)
Precipitation & Temperature
Monthly coverage 1979 – today
Incorporation of topoclimate (e.g. orographic rainfall & wind fields)
Downscaled ERA-interim model
Avoidance of spatial regression approaches and related problems
Allows calculation of derived parameters based on monthly values such as length of dry periods etc.