Preliminary comparisons of the Stock Synthesis assessment model for North Pacific swordfish

This working paper is provided as a reference for preparing for the 2018 benchmark North Pacific swordfish stock assessment by the ISC Billfish Working Group. It details the parameters and model structure explored in the 2009 benchmark assessment and compares outputs of that assessment using the Stock Synthesis (SS) version SS3.24f used in 2009, with outputs using the most current version of SS, SS3.30. Results from this comparison show that there are no differences in model output from the SS3.24f version to the SS3.30 version; therefore, the working group could use the SS3.30 version without continuity concerns. Michelle Sculley, Annie Yau. "Issued 21 May 2018." Includes bibliographical references. 2018 NMFS (National Marine Fisheries Service) PIFSC (Pacific Islands Fisheries Science Center) Library http://doi.org/10.7289/V5/WP-PIFSC-18-004 Public Domain 1862