#HOW TO CHNAGE A GCM TO ISO SERIES#
Should they be confirmed, these results would indicate that widely accepted outcomes of climate change studies using this downscaling technique need reconsideration.Ĭlimate change impact studies are affected by the statistical properties of the local weather time series 1.
#HOW TO CHNAGE A GCM TO ISO GENERATOR#
We demonstrated that the choice of a weather generator in the downscaling process may have a higher impact on crop yield estimates than the climate scenario adopted.
Then we assessed the impacts of estimated changes of precipitation and air temperature for a sample of 15 sites worldwide using a rice yield model and an extended set of climate metrics. For that, we first designed the downscaling experiments with three weather generators (CLIMAK, LARS-WG, WeaGETS) to interpret future projections. We extracted the influence of weather generators on climate variability at local scale and the uncertainty that could affect impact assessment. With multiple climate indices and alternative weather generators, we directly quantified the uncertainty associated with using weather generators when site specific downscaling is performed.
We analysed the behaviour of weather generators while downscaling precipitation and air temperature data. Climate change studies involve complex processes translating coarse climate change projections in locally meaningful terms.
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