LARS-WG weather generator

LARS-WG 6.0, a stochastic weather generator, is a computationally inexpensive downscaling tool to generate local scale climate scenarios based on global or regional climate models for impact assessments of climate change. LARS-WG has been used in more than 75 countries for research and education. The current version of LARS-WG incorporates climate projections from the CMIP5 ensemble used in the IPCC Fifth Assessment Report. LARS-WG has been well validated in diverse climates around the world.

LARS-WG can be used by an individual from academic, governmental and non-profit organisations for research. The use of LARS-WG in a research project requires a licence. LARS-WG cannot be used for commercial applications.

Register your copy by sending your name, affiliation and intended use to By using LARS-WG, you agree to share the LARS-WG derivatives, e.g. site parameters and diagnostics files, with the research community.

Download LARS-WG 6.0 (1 GB, update 08/02/2022)

Previous version of LARS-WG 5.5, which includes climate projections from the CMIP3 and EU-ENSEMBLES ensembles can be downloaded from here