I'm hoping someone can point me to a reference that describes how an hourly forecasted variable is defined on a timeline. I'm currently assuming that the variable represents the hourly average over the time-frame that spans +/- 30 minutes to the reported hour.

E.g. X(12:00pm) = Average(X([11:30am,12:30pm]))

Of course X(12:00pm) = X(12:00pm) could be an alternative definition.

This question arises when comparison observation data to forecasted values. Do you compare the forecasted value to the closest sample time, average of observations over the hour, interpolation to the hour, etc.?

Thanks.

E.g. X(12:00pm) = Average(X([11:30am,12:30pm]))

Of course X(12:00pm) = X(12:00pm) could be an alternative definition.

This question arises when comparison observation data to forecasted values. Do you compare the forecasted value to the closest sample time, average of observations over the hour, interpolation to the hour, etc.?

Thanks.

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