Run simulation
See also:
CAPMOD, CAPRI documentation, PDF
Purpose
Performs a simulation with the CAPRI model. The model is calibrated to a future point in time called the baseline,
and simulation runs are counterfactual runs against the baseline which change exogenous drivers (population growth, income growth, exchange rates, policy instruments)
to assess their impacts on agricultural markets, regional production and various social, economic and environmental indicators covered by CAPRI.
Typically, results from a simulation runs are compared agains the baseline or other scenario results in the
exploit scenarios work step.
Usage
The different controls steer the data base and baseline underlying the run, and various model settings affecting the simulation
behaviour. Please refer to the CAPRI documentation and the content
on the CAPRI web page for further information.
- Base year: the base year (three-year average), determines the data base and calibration point to use.
- Simulation year: the simulation year, determiens the calibration point to use, and the year for the policy scenario.
- Member States: either all if the global market model is switched on, or user selected.
- Regional Break Down: typically, NUTS 2 is used (about 250 regions for EU27, Western Balkans and Norway). Resolution at "Member States"
is only useful for testing purposes. The "Farm types" are currently still in a testing phase, a final release a planned for spring 2009.
- Number of iterations: The supply module and
market model of CAPRI
are sequentially
linked. The market model is calibrated to results of the supply
model, whereas the supply model is solve at prices of the market model.
The number of iterations determine how often that process is repeated.
Usually, 15 iterations are chosen for production runs.
- Scenario file name: File in GAMS format
storing the exogenous drivers for the simulation. A text editor as e.g.
the GAMS IDE should be used to open and edit those files, found in the
"GAMS\POL_INPUT" directory of the current CAPRI model file directory.
- Global market model: If switched on, the
model will iterate between the supply module
and , and prices for
primary and secondary agricultural products will be endogenous.
- Young animal market model: If switched on, the
model will iterate between the supply module
and market module for young animals, and prices for
young animals will be endogenous.
The remaining four check boxes will switch on and off certain parts of the post-model reporting.
Note
During the run, selected results from the iterations can be opended in a separate viewer as described
in Tracking the iteration behaviour of CAPRI.