Objective and approach of the yield forecast
The objective of the yield forecast is to provide the most likely, precise, accurate, scientific, traceable and independent forecasts for the main crops’ yields at EU level taking into account the effect of the climate during the season as early as possible during the cropping campaign (and until harvest).
The forecasted crop yield is calculated with a combination of methods and software tools. It is assumed to be a function of the trend of observed yields, possibly corrected with a function of one or more indicators from elsewhere out of the MCYFS and closed with a residual error:
Forecasted yield = f(t) + f(i) + residual error
- f(t) = function of the trend of observed yields over the last 10 years
- f(i) = optional function of one or more indicators that originate from other parts of the MCYFS.
The approach of using different combinations of indicators results in a large number of possible forecasts with only a few being statistically significant and even fewer having a logical causal relation between indicator and observed yield.
Forecast input data
The data for the yield forecast procedure were extensively discussed in the other modules:
Other input data only used in the yield forecast module include: