How Does Antarctic Bottom Water Cross the Southern Ocean?

被引：52
作者：
Solodoch, A. [1 ]
Stewart, A. L. [1 ]
Hogg, A. McC. [2 ,3 ]
Morrison, A. K. [2 ,4 ]
Kiss, A. E. [2 ,3 ]
Thompson, A. F. [5 ]
Purkey, S. G. [6 ]
Cimoli, L. [6 ]
机构：
[1] Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA 90095 USA
[2] Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT, Australia
[3] ARC Ctr Excellence Climate Extremes, Douglas, Qld, Australia
[4] Australian Ctr Excellence Antarctic Sci, Parkville, Vic, Australia
[5] CALTECH, Environm Sci & Engn, Pasadena, CA 91125 USA
[6] Scripps Inst Oceanog, UCSD, San Diego, CA USA
来源：
GEOPHYSICAL RESEARCH LETTERS | 2022年 / 49卷 / 07期
基金：
澳大利亚研究理事会; 美国国家科学基金会; 美国国家航空航天局;
关键词：
meridional overturning circulation; Antarctic Bottom Water; ocean circulation; Southern Ocean; Deep Western Boundary Currents; ocean stirring; GLOBAL OVERTURNING CIRCULATION; WEDDELL GYRE; SEA-ICE; CIRCUMPOLAR CURRENT; DEEP; TRANSPORT; VENTILATION; PACIFIC; DENSITY; EXPORT;
D O I：
10.1029/2021GL097211
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Antarctic Bottom Water (AABW), which fills the global ocean abyss, is derived from dense water that forms in several distinct Antarctic shelf regions. Previous modeling studies have reached conflicting conclusions regarding export pathways of AABW across the Southern Ocean and the degree to which AABW originating from distinct source regions are blended during their export. This study addresses these questions using passive tracer deployments in a 61-year global high-resolution (0.1 degrees) ocean/sea-ice simulation. Two distinct export "conduits" are identified: Weddell Sea- and Prydz Bay-sourced AABW are blended together and exported mainly to the Atlantic and Indian Oceans, while Ross Sea- and Adelie Land-sourced AABW are exported mainly to the Pacific Ocean. Northward transport of each tracer occurs almost exclusively (>90%) within a single conduit. These findings imply that regional changes in AABW production may impact the three-dimensional structure of the global overturning circulation.
引用
收藏
页数：11
相关论文
共 58 条
  • [1] Abernathey RP, 2016, NAT GEOSCI, V9, P596, DOI [10.1038/NGEO2749, 10.1038/ngeo2749]
  • [2] Stabilization of dense Antarctic water supply to the Atlantic Ocean overturning circulation
    Abrahamsen, E. Povl
    Meijers, Andrew J. S.
    Polzin, Kurt L.
    Garabato, Alberto C. Naveira
    King, Brian A.
    Firing, Yvonne L.
    Sallee, Jean-Baptiste
    Sheen, Katy L.
    Gordon, Arnold L.
    Huber, Bruce A.
    Meredith, Michael P.
    [J]. NATURE CLIMATE CHANGE, 2019, 9 (10) : 742 - +
  • [3] The role of deep ocean circulation in setting glacial climates
    Adkins, Jess F.
    [J]. PALEOCEANOGRAPHY, 2013, 28 (03): : 539 - 561
  • [4] Cessi P, 2019, ANNU REV MAR SCI, V11, P249, DOI [10.1146/annurev-marine-010318-095241, 10.1146/annurev-marine-010318095241]
  • [5] On the Consumption of Antarctic Bottom Water in the Abyssal Ocean
    de Lavergne, Casimir
    Madec, Gurvan
    Le Sommer, Julien
    Nurser, A. J. George
    Garabato, Alberto C. Naveira
    [J]. JOURNAL OF PHYSICAL OCEANOGRAPHY, 2016, 46 (02) : 635 - 661
  • [6] Mean Antarctic Circumpolar Current transport measured in Drake Passage
    Donohue, K. A.
    Tracey, K. L.
    Watts, D. R.
    Chidichimo, M. P.
    Chereskin, T. K.
    [J]. GEOPHYSICAL RESEARCH LETTERS, 2016, 43 (22) : 11760 - 11767
  • [7] Variability of the Ross Gyre, Southern Ocean: Drivers and Responses Revealed by Satellite Altimetry
    Dotto, Tiago S.
    Garabato, Alberto Naveira
    Bacon, Sheldon
    Tsamados, Michel
    Holland, Paul R.
    Hooley, Jack
    Frajka-Williams, Eleanor
    Ridout, Andy
    Meredith, Michael P.
    [J]. GEOPHYSICAL RESEARCH LETTERS, 2018, 45 (12) : 6195 - 6204
  • [8] Strong export of Antarctic Bottom Water east of the Kerguelen plateau
    Fukamachi, Y.
    Rintoul, S. R.
    Church, J. A.
    Aoki, S.
    Sokolov, S.
    Rosenberg, M. A.
    Wakatsuchi, M.
    [J]. NATURE GEOSCIENCE, 2010, 3 (05) : 327 - 331
  • [9] Improved estimates of global ocean circulation, heat transport and mixing from hydrographic data
    Ganachaud, A
    Wunsch, C
    [J]. NATURE, 2000, 408 (6811) : 453 - 457
  • [10] On the export of Antarctic Bottom Water from the Weddell Sea
    Garabato, ACN
    McDonagh, EL
    Stevens, DP
    Heywood, KJ
    Sanders, RJ
    [J]. DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY, 2002, 49 (21) : 4715 - 4742
123456