The linkage between model results and monitoring data can be complicated if monitoring programs are not designed to address which parameters should be monitored, timing of measurements, location, spatial scale, and resolution of measurements to match with model parameters. This is particularly valuable in the early stages of a project when the opportunity exists to alter the project to ensure long-term storage and improve efficiency. Monitoring data collected early in the project are often used to refine and calibrate the predictive model, improving the basis for predicting the longer-term performance of the project. Simulations have been used in Core R&D test projects, including Weyburn, Frio Brine Pilot, and West Pearl Queen (see Section ), and.