AbstractThe upwelling diapycnal limb of the ocean’s meridional overturning circulation is driven by divergence of diabatic turbulent buoyancy-fluxes <w’b’> across density surfaces. A global assessment of zonally-averaged internal-wave-driven turbulent diapycnal buoyancy-fluxes from a finescale strain-based parameterization is used to infer mean diapycnal transports in the interior and near the bottom boundary. Bulk interior diabatic transports dominate above 2500-m depth (buoyancies |B| = gγn/ρ0 < 0.267 m s−2, neutral densities γn < 27.9 kg m−3), upwelling at 10-11 Sv (2, 5 and 3-4 Sv in the Indian, Pacific and Atlantic, respectively) but are weak in the abyss. Boundary water-mass transformations peak at 18-25 Sv (4-6, 10-14 and 4-5 Sv in the Indian, Pacific and Atlantic) near buoyancy |B| ~ 0.268 m s−2 (γn ~ 28.1 kg m−3, 4500-m depth) between bottom and lower deep waters, consistent with 20-30 Sv global AABW transport estimates. Interior transports above 2500-m depth fall below inverse estimates which may be consistent with a more adiabatic ocean interior where diapycnal mixing occurs at Southern Hemisphere high-latitude surface density outcrops.
Journal of Physical Oceanography – American Meteorological Society
Published: Sep 7, 2017
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera