Collection of Alkenone temperatures derived from 42 Multicorer sediment surface samples of the subpolar North Pacific and its marginal seas (Okhotsk Sea and Bering Sea). Multicores were collected during several expeditions to the Okhotsk Sea, Bering Sea and North Pacific from 1997 to 2013 (R/V Akademik M.A. Lavrentyev cruise LV27 (Nürnberg et al., 1997); R/V Akademik M.A. Lavrentyev cruise LV28 (Biebow and Hütten, 1999); R/V Marshal Gelovany cruise GE99 (Biebow et al., 2000); R/V Akademik M.A. Lavrentyev cruise LV29 (Biebow et al., 2003); R/V Sonne cruise SO178, (Dullo and Biebow, 2004); R/V Sonne cruise SO201-2, Dullo et al., 2009); R/V Akademik M.A. Lavrentyev cruise LV55 (Gorbarenko, 2012); R/V Akademik M.A. Lavrentyev cruise LV63 (Gorbarenko, 2014).