1. Institute of Marine SciencesUniversity of California Santa Cruz 1156 High Street Santa Cruz CA 95064 U.S.A.
2. Southwest Fisheries Science CenterNational Oceanic and Atmospheric Administration Suite 255A, 99 Pacific Street, Heritage Harbor Monterey CA 93940 U.S.A.
3. Earth System Research LaboratoryNational Oceanic and Atmospheric Administration 325 Broadway Street Boulder CO 80305 U.S.A.