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Record #190793:
Southern Ocean thermocline ventilation / Jean-Baptiste Sallée, and 3 others.
Title: | Southern Ocean thermocline ventilation / Jean-Baptiste Sallée, and 3 others. |
Author(s): | Sallée, Jean-Baptiste. |
Date: | 2010. |
In: | Journal of Physical Oceanography. (2010.), Vol. 40(3) (2010) |
Abstract: | Uses approximate mass (volume) budget in surface layer of Southern Ocean to investigate intensity and regional variability of ventilation process, with particular reference to subduction and upwelling. Circumpolar-averaged circulation shows upwelling in Antarctic Intermediate Water (AAIW) density classes, which is carried north into zone of dense sub-Antarctic Mode Water (SAMW) subduction. Although no consistent net production is found in light SAMW density classes, large subduction of sub-Tropical Mode Water (STMW) is observed. STMW area is fed by convergence of southward and northward residual meridional circulation. Eddy-induced contribution is important for water mass transport in vicinity of Antarctic Circumpolar Current, and balances horizontal northward Ekman transport and vertical Ekman pumping. While circumpolar-averaged upper cell structure is consistent with average surface fluxes, it hides strong longitudinal regional variations. Bathymetrically constrained hotspots of large subduction are consistent with interior potential vorticity structure and circulation in thermocline. Pools of SAMW and AAIW of different densities are found along circumpolar belt in association with regional pattern of subduction and interior circulation. |
Notes: | Journal of Physical Oceanography. Vol. 40(3) :509-529 (2010). |
Keywords: | 551.46 -- Oceanography, physical. 551.465 -- Oceanography, dynamics. 551.465.7 -- Oceanography, energy budget. 551.465.45 -- Water masses. 551.465.46 -- Upwelling. C -- Oceanography, hydrography and hydrology. (*7) -- Antarctic regions. (*80) -- Southern Ocean. |
SPRI record no.: | 190793 |
LDR 02351naa#a2200000#a#4500 001 SPRI-190793 005 20240328093448.0 007 ta 008 240328s2010####xx#ab#|##|###|0||#0|eng#d 035 ## ‡aSPRI-190793 040 ## ‡aUkCU-P‡beng‡eaacr 100 1# ‡aSallée, Jean-Baptiste. 245 10 ‡aSouthern Ocean thermocline ventilation /‡cJean-Baptiste Sallée, and 3 others. 260 ## ‡a[S.l.] :‡b[s.n.],‡c2010. 300 ## ‡ap. 509-529 :‡bill., diags., maps. 500 ## ‡aJournal of Physical Oceanography. Vol. 40(3) :509-529 (2010). 520 3# ‡aUses approximate mass (volume) budget in surface layer of Southern Ocean to investigate intensity and regional variability of ventilation process, with particular reference to subduction and upwelling. Circumpolar-averaged circulation shows upwelling in Antarctic Intermediate Water (AAIW) density classes, which is carried north into zone of dense sub-Antarctic Mode Water (SAMW) subduction. Although no consistent net production is found in light SAMW density classes, large subduction of sub-Tropical Mode Water (STMW) is observed. STMW area is fed by convergence of southward and northward residual meridional circulation. Eddy-induced contribution is important for water mass transport in vicinity of Antarctic Circumpolar Current, and balances horizontal northward Ekman transport and vertical Ekman pumping. While circumpolar-averaged upper cell structure is consistent with average surface fluxes, it hides strong longitudinal regional variations. Bathymetrically constrained hotspots of large subduction are consistent with interior potential vorticity structure and circulation in thermocline. Pools of SAMW and AAIW of different densities are found along circumpolar belt in association with regional pattern of subduction and interior circulation. 530 ## ‡aAlso issued online ‡uurn:doi:10.1175/2009JPO4291.1‡uhttps://dx.doi.org/10.1175/2009JPO4291.1 650 07 ‡a551.46 -- Oceanography, physical.‡2udc 650 07 ‡a551.465 -- Oceanography, dynamics.‡2udc 650 07 ‡a551.465.7 -- Oceanography, energy budget.‡2udc 650 07 ‡a551.465.45 -- Water masses.‡2udc 650 07 ‡a551.465.46 -- Upwelling.‡2udc 650 07 ‡aC -- Oceanography, hydrography and hydrology.‡2local 651 #7 ‡a(*7) -- Antarctic regions.‡2udc 651 #7 ‡a(*80) -- Southern Ocean.‡2udc 773 0# ‡7nnas ‡tJournal of Physical Oceanography. ‡gVol. 40(3) (2010) ‡wSPRI-78712 916 ## ‡aHS 917 ## ‡aUnenhanced record from Muscat, imported 2019 948 3# ‡a20240328 ‡bHS