Katsuro Katsumata

TL;DR: Ship-based measurements show that vertical diffusivity increases from a minimum in the thermocline to a maximum within the bottom 1,500 m, shifting the physical paradigm of the ocean's overturning circulation.

TL;DR: In this article, the authors discuss the scientific need for globally integrated deep-ocean observing, its status, and the key scientific questions and societal mandates driving observing requirements over the next decade.

TL;DR: In this article, a high-resolution primitive equation model simulation is used to form an energy budget for the principal semidiurnal tide (M2) over a region of the Hawaiian Ridge from Niihau to Maui.

TL;DR: Computer simulations reveal a fast teleconnection between changes in the surface air-sea heat flux off the Adélie Coast of Antarctica and the bottom-water warming in the North Pacific, which can occur within four decades, rather than the centuries that conventional mechanisms have suggested.

TL;DR: In this paper, the authors calculated basin-scale and global ocean decadal temperature change rates from the 1990s to the 2000s for waters below 3000 m. The global heat content (HC) change estimated from the temperature change rate below 3000m was 0.8 × 1022 J decade−1; a value that cannot be neglected for precise estimation of the global heat balance.