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- When a modified time series is a simulated forecast timeseries and the valid time is equal to time zero (or later) then the entire modifier will be applied, otherwise the modifier will only be applied up to the valid time. When a modifier is created the valid time will be equal to the system time. In this situation the entire modifier will be applied. When the modifier is still available and used in later runs with a higher later time zero then the modifier will only be partly applied up to the valid time. This functionality was developed for the following situation. When the data of a simulated time series before time zero is a copy of the observed data this part of the simulation is not likely to change in simulations which are executed at a later time with a higher time zero. So the part of the modifier before time zero (valid time) is still valid in later runs. However the part of the modifier after time zero is likely to be invalid because this part of the time series more likely to change in later runs.
- When a modified time series is an external forecast time series, and no valid time is configured, the modifier is valid for all external forecast times.
- When a modified time series is an external forecast time series, and a valid time is configured, the modifier is valid for the valid time only.
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