On the Importance of a Midlatitude Oceanic Frontal Zone for the Baroclinic Annular Mode

Morio Nakayama, University of Tokyo, Research Center for Advanced Science and Technology, Tokyo, Japan, Hisashi Nakamura, University of Tokyo, Bunkyo-ku, Japan and Fumiaki Ogawa, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway