Volume 43 Issue 1
Jan.  2024
Turn off MathJax
Article Contents
Shan Liu, Jingzhi Su, Huijun Wang, Cuijuan Sui. What induced the trend shift of mixed-layer depths in the Antarctic Circumpolar Current region in the mid-1980s?[J]. Acta Oceanologica Sinica, 2024, 43(1): 11-21. doi: 10.1007/s13131-023-2268-5
Citation: Shan Liu, Jingzhi Su, Huijun Wang, Cuijuan Sui. What induced the trend shift of mixed-layer depths in the Antarctic Circumpolar Current region in the mid-1980s?[J]. Acta Oceanologica Sinica, 2024, 43(1): 11-21. doi: 10.1007/s13131-023-2268-5

What induced the trend shift of mixed-layer depths in the Antarctic Circumpolar Current region in the mid-1980s?

doi: 10.1007/s13131-023-2268-5
Funds:  The National Natural Science Foundation of China under contract No. 41605052.
More Information
  • Corresponding author: E-mail: liu_shan_@126.com
  • Received Date: 2023-06-13
  • Accepted Date: 2023-10-10
  • Available Online: 2023-11-27
  • Publish Date: 2024-01-01
  • An obvious trend shift in the annual mean and winter mixed layer depth (MLD) in the Antarctic Circumpolar Current (ACC) region was detected during the 1960–2021 period. Shallowing trends stopped in mid-1980s, followed by a period of weak trends. The MLD deepening trend difference between the two periods were mainly distributed in the western areas in the Drake Passage, the areas north to Victoria Land and Wilkes Land, and the central parts of the South Indian sector. The newly formed ocean current shear due to the meridional shift of the ACC flow axis between the two periods is the dominant driver for the MLD trends shift distributed in the western areas in the Drake Passage and the central parts of the South Indian sector. The saltier trends in the regions north to Victoria Land and Wilkes Land could be responsible for the strengthening mixing processes in this region.
  • loading
  • An Yuzhu, Zhang Ren, Wang Huizan, et al. 2012. Study on calculation and spatio-temporal variations of global ocean mixed layer depth. Chinese Journal of Geophysics (in Chinese), 55(7): 2249–2258
    Barkan R, Winters K B, McWilliams J C. 2017. Stimulated imbalance and the enhancement of eddy kinetic energy dissipation by internal waves. Journal of Physical Oceanography, 47(1): 181–198, doi: 10.1175/JPO-D-16-0117.1
    Böning C W, Dispert A, Visbeck M, et al. 2008. The response of the Antarctic Circumpolar Current to recent climate change. Nature Geoscience, 1(12): 864–869, doi: 10.1038/ngeo362
    Buckingham C E, Lucas N S, Belcher S E, et al. 2019. The contribution of surface and submesoscale processes to turbulence in the open ocean surface boundary layer. Journal of Advances in Modeling Earth Systems, 11(12): 4066–4094, doi: 10.1029/2019MS001801
    Cheng Lijing, Trenberth K, Fasullo J, et al. 2017. Improved estimates of ocean heat content from 1960 to 2015. Science Advances, 3(3): e1601545, doi: 10.1126/sciadv.1601545
    de Boyer Montégut C, Gurvan M, Fischer A S, et al. 2004. Mixed layer depth over the global ocean: an examination of profile data and a profile-based climatology. Journal of Geophysical Research: Oceans, 109(C12): C12003, doi: 10.1029/2004JC002378
    Deser C, Alexander M A, Timlin M S. 1996. Upper-ocean thermal variations in the North Pacific during 1970−1991. Journal of Climate, 9(8): 1840–1855, doi: 10.1175/1520-0442(1996)009<1840:UOTVIT>2.0.CO;2
    Downes S M, Bindoff N L, Rintoul S R. 2009. Impacts of climate change on the subduction of mode and intermediate water masses in the Southern Ocean. Journal of Climate, 22(12): 3289–3302, doi: 10.1175/2008JCLI2653.1
    Downes S M, Bindoff N L, Rintoul S R. 2010. Changes in the subduction of Southern Ocean water masses at the end of the Twenty-First century in eight IPCC models. Journal of Climate, 23(24): 6526–6541, doi: 10.1175/2010JCLI3620.1
    Feng Licheng, Zhang Ronghua, Yu Bo, et al. 2020. Roles of wind stress and subsurface cold water in the second-year cooling of the 2017/18 La Niña event. Advances in Atmospheric Sciences, 37(8): 847–860, doi: 10.1007/s00376-020-0028-4
    Ferrari R, Nikurashin M. 2010. Suppression of eddy diffusivity across jets in the Southern Ocean. Journal of Physical Oceanography, 40(7): 1501–1519, doi: 10.1175/2010JPO4278.1
    Giunta V, Ward B. 2022. Ocean mixed layer depth from dissipation. Journal of Geophysical Research: Oceans, 127(4): e2021JC017904, doi: 10.1029/2021JC017904
    Hersbach H, Bell B, Berrisford P, et al. 2020. The ERA5 global reanalysis. Quarterly Journal of the Royal Meteorological Society, 146(730): 1999–2049, doi: 10.1002/qj.3803
    Huang Chuanjiang, Qiao Fangli, Dai Dejun. 2014. Evaluating CMIP5 simulations of mixed layer depth during summer. Journal of Geophysical Research: Oceans, 119(4): 2568–2582, doi: 10.1002/2013JC009535
    Huang Chuanjiang, Qiao Fangli, Shu Qi, et al. 2012. Evaluating austral summer mixed-layer response to surface wave-induced mixing in the Southern Ocean. Journal of Geophysical Research: Oceans, 117(C11): C00J18, doi: 10.1029/2012JC007892
    Huang Ruixin, Qiu Bo. 1998. The structure of the wind-driven circulation in the subtropical South Pacific Ocean. Journal of Physical Oceanography, 28(6): 1173–1186, doi: 10.1175/1520-0485(1998)028<1173:TSOTWD>2.0.CO;2
    Li Guancheng, Cheng Lijing, Zhu Jiang, et al. 2020. Increasing ocean stratification over the past half-century. Nature Climate Change, 10(12): 1116–1123, doi: 10.1038/s41558-020-00918-2
    Liu Shan, Jing Xueyi, Chen Xingrong, et al. 2023. An assessment of the subduction rate in the CMIP6 historical experiment. Acta Oceanologica Sinica, 42(1): 44–60, doi: 10.1007/s13131-022-2108-z
    Liu Chengyan, Wu Lixin. 2012. An intensification trend of South Pacific Mode Water subduction rates over the 20th century. Journal of Geophysical Research: Oceans, 117(C7): C07009, doi: 10.1029/2011JC007755
    Munday D R, Johnson H L, Marshall D P. 2013. Eddy saturation of equilibrated circumpolar currents. Journal of Physical Oceanography, 43(3): 507–532, doi: 10.1175/JPO-D-12-095.1
    Ohno Y, Iwasaka N, Kobashi F, et al. 2009. Mixed layer depth climatology of the North Pacific based on Argo observations. Journal of Oceanography, 65(1): 1–16, doi: 10.1007/s10872-009-0001-4
    Rintoul S R. 2018. The global influence of localized dynamics in the Southern Ocean. Nature, 558(7709): 209–218, doi: 10.1038/s41586-018-0182-3
    Russell J L, Dixon K W, Gnanadesikan A, et al. 2006. The Southern Hemisphere westerlies in a warming world: propping open the door to the deep ocean. Journal of Climate, 19(24): 6382–6390, doi: 10.1175/JCLI3984.1
    Sallée J B, Pellichero V, Akhoudas C, et al. 2021. Summertime increases in upper-ocean stratification and mixed-layer depth. Nature, 591(7851): 592–598, doi: 10.1038/s41586-021-03303-x
    Sallée J B, Shuckburgh E, Bruneau N, et al. 2013. Assessment of Southern Ocean mixed-layer depths in CMIP5 models: historical bias and forcing response. Journal of Geophysical Research: Oceans, 118(4): 1845–1862, doi: 10.1002/jgrc.20157
    Sallée J B, Speer K G, Rintoul S R. 2010. Zonally asymmetric response of the Southern Ocean mixed-layer depth to the Southern Annular Mode. Nature Geoscience, 3(4): 273–279, doi: 10.1038/ngeo812
    Shi Jiarui, Talley L D, Xie Shangping, et al. 2021. Ocean warming and accelerating Southern Ocean zonal flow. Nature Climate Chang, 11: 1090–1097, doi: 10.1038/s41558-021-01212-5
    Somavilla R, González-Pola C, Fernández-Diaz J. 2017. The warmer the ocean surface, the shallower the mixed layer. How much of this is true?. Journal of Geophysical Research: Oceans, 122(9): 7698–7716, doi: 10.1002/2017JC013125
    Stewart A L. 2021. Warming spins up the Southern Ocean. Nature Climate Change, 11(12): 1022–1024, doi: 10.1038/s41558-021-01227-y
    Toggweiler J R, Russell J. 2008. Ocean circulation in a warming climate. Nature, 451(7176): 286–288, doi: 10.1038/nature06590
    Yamaguchi R, Suga T. 2019. Trend and variability in global upper-ocean stratification since the 1960s. Journal of Geophysical Research: Oceans, 124(12): 8933–8948, doi: 10.1029/2019JC015439
    Yang Xiaoyi, Huang Ruixin, Wang Dongxiao. 2007. Decadal changes of wind stress over the Southern Ocean associated with Antarctic ozone depletion. Journal of Climate, 20(14): 3395–3410, doi: 10.1175/JCLI4195.1
    Zhang Yutong, Xu Haiming, Qiao Fangli, et al. 2018. Seasonal variation of the global mixed layer depth: comparison between Argo data and FIO-ESM. Frontiers of Earth Science, 12(1): 24–36, doi: 10.1007/s11707-017-0631-6
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Figures(7)

    Article Metrics

    Article views (299) PDF downloads(17) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return