This function prepares total tau values for use. As the source data already
provides all required information this function purely removes not required
data and moves xref values to the weighting object which is required for
aggregation.
Usage
calcTauTotal(source = "paper")
Value
Total tau data and corresponding weights as a list of two MAgPIE
objects
Arguments
source
data source, either "paper" (default) or "historical".