The cover target is the absolute cover per region and year: the value from the target data in the harmonization year plus the change in the input since that year.
Arguments
- inputCover
named list of region-level per-year cover totals, the input including the harmonization year and the years after it
- targetCover
named list of region-level per-year cover totals, providing the anchor in the harmonization year
- harmonizationYear
integer year the input changes are measured from
Value
list with the balanced regional cover targets per cover
(coverTargets) and the balanced global cover total
(coverGlobalBalanced)
Details
Per cover, the tool sets negative regional targets to zero. This raises their sum. To compensate, it scales the targets > 0 of the same cover in the other regions down, so the global total equals the raw (unmodified) global target. Covers do not interact here.
The tool also sets a negative global cover target to zero. It compensates for the clipped loss by scaling the regional targets of all covers with one common factor, so the global total over all covers is met (zero if it is negative). Returns the balanced regional cover targets and the balanced global cover total.