The formulae used to set the 2021 initial anchovy TAC

The formulae used by the SWG‐PEL to set the initial directed anchovy TAC for 2021 correspond to those used to recommend the initial anchovy TAC under OMP‐18 (de Moor 2018) and OMP‐18rev (under development; de Moor 2020). However, the parameter values differ. The formulae, together with associated parameter values are detailed in the Appendix. The 𝛼 value used at this point in time was selected based on initial OMP‐18rev results presented by de Moor (2020) for joint sardine‐anchovy Candidate Management Procedures based on sardine‐anchovy Operating Models. This work was a step towards OMP‐8rev. However, OMP‐18rev will be an anchovy‐only OMP and still needs to be tuned to obtain final control parameters.