Policy - WITNESS

Policy model in WITNESS is for the moment limited to CO₂ emission taxes.

As a default in the framework, the CO₂ emission price is dynamically set to the maximum between Carbon Capture and Storage and environmental damage price by the "Policy" module (see here).

Various trades can be run to compare effects of various policies (e.g. variable CO2 tax strategies) or optimize their tuning for specific objectives.

Model Documentation - WITNESS
Corresponding documentation
AIM-Hub BLUES C3IAM DNE21+ GCAM GEM-E3 GRACE IFs IMACLIM IMAGE MESSAGE-GLOBIOM POLES PROMETHEUS REMIND-MAgPIE TIAM-UCL WITCH WITNESS
Previous versions
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Model information
Model link	https://www.witness4climate.org/world-environmental-impact-and-economics-scenarios/
Institution	Open-Source for Climate (OS-C), N/A, https://os-climate.org/transition-analysis/., Linux Foundation (LF), N/A, https://www.linuxfoundation.org/.
Solution concept	Systems dynamics based approach
Solution method	OptimizationSimulation-based optimization
Anticipation