Temporal variability of the meridional overturning circulation at 34.5°S: Results from two pilot boundary arrays in the South Atlantic

Journal of Geophysical Research: Oceans

Volumn 118, Issue 12, 2013, Pages 6461-6478

  Meinen, Christopher S ^a   Speich, Sabrina ^b   Perez, Renellys C ^a,c   Dong, Shenfu ^a,c   Piola, Alberto R ^d   Garzoli, Silvia L ^a,c   Baringer, Molly O ^a   Gladyshev, Sergey ^e   Campos, Edmo J D ^f  

^a ATLANTIC OCEANOGRAPHIC AND METEOROLOGICAL LABORATORY   (United States)

^b UNIVERSITÉ DE BRETAGNE OCCIDENTALE   (France)

^c UNIVERSITY OF MIAMI   (United States)

^d UNIVERSIDAD DE BUENOS AIRES   (Argentina)

^e SHIRSHOV INSTITUTE OF OCEANOLOGY   (Russian Federation)

^f UNIVERSITY OF SÃO PAULO   (Brazil)

Author keywords

bottom pressure; inverted echo sounder; meridional overturning circulation; South Atlantic; transport

Indexed keywords

SIGNAL FILTERING AND PREDICTION;

BOTTOM PRESSURES; ECHO SOUNDERS; MERIDIONAL OVERTURNING CIRCULATIONS; SOUTH ATLANTIC; TRANSPORT;

TIME SERIES;

BOTTOM PRESSURE; ECHO SOUNDER; EKMAN TRANSPORT; GEOSTROPHIC FLOW; MERIDIONAL CIRCULATION; OVERTURN; TEMPORAL VARIATION; TIME SERIES;

ATLANTIC OCEAN; ATLANTIC OCEAN (SOUTH);

EID: 84892905088     PISSN: None     EISSN: 21699291     Source Type: Journal    
DOI: 10.1002/2013JC009228     Document Type: Article

References (65)

1. Atlas, R., R. N. Hoffman, J. Ardizzone, S. M. Leidner, J. C. Jusem, D. K. Smith, and, D. Gombos, (2011), A cross-calibrated, multiplatform ocean surface wind velocity product for meteorological and oceanographic applications, Bull. Am. Meteorol. Soc., 92, 157-174, doi: 10.1175/2010BAMS2946.1.
2. Baringer, M. O., and, S. L. Garzoli, (2007), Meridional heat transport determined with expendable bathythermographs. Part I: Error estimates from model and hydrographic data, Deep Sea Res., Part I, 54 (8), 1390-1401.
3. Barnier, B., et al. (2006), Impact of partial steps and momentum advection schemes in a global circulation model at eddy permitting resolution, Ocean Dyn., 56 (5-6), 543-567, doi: 10.1007/s10236-006-0082-1.
4. Bryden, H. L., H. R. Longworth, and, S. A. Cunningham, (2005), Slowing of the Atlantic meridional overturning circulation at 25°N, Nature, 438, 655-657.
5. Bryden, H. L., B. A. King, and, G. D. McCarthy, (2011), South Atlantic overturning circulation at 24°S, J. Mar. Res., 69 (1), 38-55.
6. Chereskin, T. K., K. A. Donohue, D. R. Watts, K. L. Tracey, Y. L. Firing, and, A. L. Cutting, (2009), Strong bottom currents and cyclogenesis in Drake Passage, Geophys. Res. Lett., 36, L23602, doi: 10.1029/2009GL040940.
7. Chidichimo, M. P., T. Kanzow, S. A. Cunningham, W. E. Johns, and, J. Marotzke, (2010), The contribution of eastern-boundary density variations to the Atlantic meridional overturning circulation at 26.5°N, Ocean Sci., 6, 475-490, doi: 10.5194/os-6-475-2010.
8. Cunningham, S. A., et al. (2007), Temporal variability of the Atlantic meridional overturning circulation at 26.5°N, Science, 317, 935, doi: 10.1126/science.1141304.
9. Dee, D. P., et al. (2011), The ERA-Interim reanalysis: Configuration and performance of the data assimilation system, Q. J. R. Meteorol. Soc., 137, 553-597, doi: 10.1002/qj.828.
10. Del Grosso, V. A., (1974), New equation for the speed of sound in natural waters (with comparisons to other equations), J. Acoust. Soc. Am., 56, 1084-1091.
11. Dijkstra, H. A., (2007), Characterization of the multiple equilibria regime in a global ocean model, Tellus, Ser. A, 59, 695-705.
12. Dong, S., S. L. Garzoli, M. O. Baringer, C. S. Meinen, and, G. J. Goni, (2009), Interannual variations in the Atlantic meridional overturning circulation and its relationship with the net northward heat transport in the South Atlantic, Geophys. Res. Lett., 36, L20606, doi: 10.1029/2009GL039356.
13. Dong, S., S. L. Garzoli, and, M. O. Baringer, (2011), The role of inter-ocean exchanges on decadal variations of the northward heat transport in the South Atlantic, J. Phys. Oceanogr., 41, 1498-1511.
14. Donohue, K. D., D. R. Watts, K. L. Tracey, A. D. Greene, and, M. Kennelly, (2010), Mapping circulation in the Kuroshio extension with an array of current and pressure recording inverted echo sounders, J. Atmos. Oceanic Technol., 27, 507-527, doi: 10.1175/2009JTECHO686.1.
15. Drijfhout, S. S., S. L. Weber, and, E. van der Swaluw, (2011), The stability of the MOC as diagnosed from model projections for pre-industrial, present and future climates, Clim. Dyn., 37, 1575-1586, doi: 10.1007/s00382-0-10-0930-z.
16. Emery, W. J., and, R. E. Thomson, (1997), Data Analysis Methods in Physical Oceanography, Pergamon, Oxford, U. K.
17. Fofonoff, N. P., (1962), Dynamics of ocean currents, in The Sea: Ideas and Observations on Progress in the Study of the Seas, vol. 1, edited by M. N. Hill, chap. 3, pp. 323-396, Wiley-Interscience, New York.
18. Fu, L.-L., (1981), The general circulation and meridional heat transport of the subtropical South Atlantic determined by inverse methods, J. Phys. Oceanogr., 11, 1171-1193.
19. Garzoli, S. L., (1993), Geostrophic velocity and transport variability in the Brazil-Malvinas Confluence, Deep Sea Res., Part I, 40 (7), 1379-1403.
20. Garzoli, S. L., and, M. O. Baringer, (2007), Meridional heat transport determined with expendable bathythermographs. Part II: South Atlantic transport, Deep Sea Res., Part I, 54 (8), 1402-1420.
21. Garzoli, S. L., and, A. L. Gordon, (1996), Origins and variability of the Benguela Current, J. Geophys. Res., 101 (C1), 897-906.
22. Garzoli, S. L., and, R. P. Matano, (2011), The South Atlantic and the Atlantic meridional overturning circulation, Deep Sea Res., Part II, 58 (17-18), 1837-1847.
23. Garzoli, S. L., M. O. Baringer, S. Dong, R. C. Perez, and, Q. Yao, (2013), South Atlantic meridional fluxes, Deep Sea Res., Part I, 71, 21-32, doi: 10.1016/j.dsr.2012.09.003.
24. Jochumsen, K., D. Quadfasel, H. Valdimarsson, and, S. Jõnsson, (2012), Variability of the Denmark Strait overflow: Moored time series from 1996-2011, J. Geophys. Res., 117, C12003, doi: 10.1029/2012JC008244.
25. Johns, W. E., et al. (2011), Continuous array-based estimates of Atlantic Ocean heat transport at 26.5°N, J. Clim., 24 (10), 2429-2449.
26. Kanzow, T., S. A. Cunningham, D. Rayner, J. J.-M. Hirshi, W. E. Johns, M. O. Baringer, H. L. Bryden, L. M. Beal, C. S. Meinen, and, J. Marotzke, (2007), Observed flow compensation associated with the meridional overturning at 26.5°N in the Atlantic, Science, 317, 938, doi: 10.1126/science.1141293.
27. Kanzow, T., U. Send, and, M. McCartney, (2008), On the variability of the deep meridional transports in the tropical North Atlantic, Deep Sea Res., Part I, 55 (12), 1601-1623, doi: 10.1016/j.dsr.2008.07.011.
28. Kanzow, T., H. L. Johnson, D. P. Marshall, S. A. Cunningham, J. J.-M. Hirschi, A. Mujahid, H. L. Bryden, and, W. E. Johns, (2009), Basinwide integrated volume transports in an eddy-filled ocean, J. Phys. Oceanogr., 39, 3091-3110, doi: 10.1175/2009JPO4185.1.
29. Kanzow, T., et al. (2010), Seasonal variability of the Atlantic meridional overturning circulation at 26.5°N, J. Clim., 23, 5678-5698, doi: 10.1175/2010JCLI3389.1.
30. Large, W. G., and, S. G. Yeager, (2009), The global climatology of an interannually varying air-sea flux data set, Clim. Dyn., 33, 341-364, doi: 10.1007/s00382-008-0441-3.
31. Levitus, S., J. Antonov, and, T. Boyer, (2005), Warming of the world ocean, 1955-2003, Geophys. Res. Lett., 32, L02604, doi: 10.1029/2004GL021592.
32. Madec, G., (2008), NEMO reference manual, ocean dynamics component: NEMO-OPA. Preliminary version, Tech. Rep. 27, Note du Pôle de modélisation, Inst. Pierre-Simon Laplace, Paris, France, ISSN 1288-1619.
33. Masumoto, Y., et al. (2004), A fifty-year Eddy resolving simulation of the world ocean-Preliminary outcomes of OFES (OGCM for the Earth simulator), J. Earth Simulator, 1, 3556.
34. McCarthy, G., E. McDonagh, and, B. King, (2011), Decadal variability of thermocline and intermediate Waters at 24°S in the South Atlantic, J. Phys. Oceanogr., 41, 157-165, doi: 10.1175/2010JPO4467.1.
35. McCarthy, G. D., E. Frajka-Williams, W. Johns, M. Baringer, C. Meinen, H. Bryden, D. Rayner, A. Duchez, C. Roberts, and, S. Cunningham, (2012), Observed interannual variability of the Atlantic meridional overturning circulation at 26.5°N, Geophys. Res. Lett., 39, L19609, doi: 10.1029/2012GL052933.
36. McDonagh, E. L., and, B. A. King, (2005), Oceanic fluxes in the South Atlantic, J. Phys. Oceanogr., 35, 109-122, doi: 10.1175/JPO-2666.1.
37. Meinen, C. S., (2001), Structure of the North Atlantic Current in stream-coordinates and the circulation in the Newfoundland Basin, Deep Sea Res., Part I, 48 (7), 1553-1580.
38. Meinen, C. S., and, D. R. Watts, (2000), Vertical structure and transport on a transect across the North Atlantic Current near 42°N: Time series and mean, J. Geophys. Res., 105 (C9), 21,869-21,891.
39. Meinen, C. S., S. L. Garzoli, W. E. Johns, and, M. O. Baringer, (2004), Transport variability of the deep western boundary current and the Antilles current off Abaco Island, Bahamas, Deep Sea Res., Part I, 51 (11), 1397-1415.
40. Meinen, C. S., A. R. Piola, R. C. Perez, and, S. L. Garzoli, (2012), Deep western boundary current transport variability in the South Atlantic: Preliminary results from a pilot array at 34.5°S, Ocean Sci., 8, 1041-1054, doi: 10.5194/os-8-1041-2012.
41. Meinen, C. S., W. E. Johns, S. L. Garzoli, E. van Sebille, D. Rayner, T. Kanzow, and, M. O. Baringer, (2013), Variability of the deep western boundary current at 26.5°N during 2004-2009, Deep Sea Res., Part II, 85, 154-168, doi: 10.1016/j.dsr2.2012.07.036.
42. Palma, E. D., R. P. Matano, and, A. R. Piola, (2008), A numerical study of the southwestern Atlantic shelf circulation, J. Geophys. Res., 113, C11010, doi: 10.1029/2007JC004720.
43. Peña-Molino, B., T. M. Joyce, and, J. M. Toole, (2012), Variability in the deep western boundary current: Local versus remote forcing, J. Geophys. Res., 117, C12022, doi: 10.1029/2012JC008369.
44. Perez, R. C., S. L. Garzoli, C. S. Meinen, and, R. P. Matano, (2011), Geostrophic velocity measurement techniques for the meridional overturning circulation and meridional heat transport in the South Atlantic, J. Atmos. Oceanic Technol., 28, 1504-1521, doi: 10.1175/JTECH-D-11-00058.1.
45. Rayner, D., et al. (2011), Monitoring the Atlantic meridional overturning circulation, Deep Sea Res., Part I, 48, 1744-1753, doi: 10.1016/j.dsr2.2010.10. 056.
46. Rossby, T., (1969), On monitoring depth variations of the main thermocline acoustically, J. Geophys. Res., 74 (23), 5542-5546.
47. Sasaki, H., M. Nonaka, Y. Sasai, H. Uehara, and, H. Sakuma, (2008), An eddy-resolving hindcast simulation of the quasiglobal ocean from 1950 to 2003 on the Earth simulator, in High Resolution Numerical Modelling of the Atmosphere and Ocean, edited by, K. Hamilton, and, W. Ohfuchi, pp. 157-185, Springer, New York.
48. Saunders, P. M., and, B. A. King, (1995), Oceanic fluxes on the WOCE A11 section, J. Phys. Oceanogr., 25, 1942-1958.
49. Send, U., M. Lankhorst, and, T. Kanzow, (2011), Observation of decadal change in the Atlantic meridional overturning circulation using 10 years of continuous transport data, Geophys. Res. Lett., 38, L24606, doi: 10.1029/2011GL049801.
50. Smith, W. H. F., and D. T. Sandwell (1997), Global Sea floor topography from satellite altimetry and ship depth soundings, Science 277 (5334), 1956-1962.
51. Speich, S., and, F. Dehairs, (2008), The MD166 BONUS-GOODHOPE Cruise, LPO UMR 6523 CNRS-IFREMERIRD-UBO technical report - IPEV technical, 245 pp. + Annexes, The University of Brest (UBO), Brest, France.
52. Stouffer, R. J., J. Yin, and, J. M. Gregory, (2006), Investigating the causes of the response of the thermohaline circulation to past and future climate changes, J. Clim., 19 (8), 1365-1387.
53. Thompson, R. O. R. Y., (1979), Coherence significance levels, J. Atmos. Sci., 36 (10), 2020-2021.
54. Toole, J. M., R. G. Curry, T. M. Joyce, M. McCartney, and, B. Peña-Molino, (2011), Transport of the North Atlantic deep western boundary current at about 39°N, 70°W: 2004-2008, Deep Sea Res., Part II, 58, 1768-1780.
55. Vellinga, M., and, R. A. Wood, (2002), Global climatic impacts of a collapse of the Atlantic thermohaline circulation, Clim. Change, 54 (3), 251-267.
56. Watts, D. R., and, H. Kontoyiannis, (1990), Deep-ocean bottom pressure measurement: Drift removal and performance, J. Atmos. Oceanic Technol., 7 (2), 296-306.
57. Watts, D. R., and, H. T. Rossby, (1977), Measuring dynamic heights with Inverted Echo Sounders: Results from MODE, J. Phys. Oceanogr., 7, 345-358.
58. Watts, D. R., K. L. Tracey, J. M. Bane, and, T. J. Shay, (1995), Gulf Stream path and thermocline structure near 74°W and 68°W, J. Geophys. Res., 100 (C9), 18,291-18,312.
59. Watts, D. R., C. Sun, and, S. Rintoul, (2001), A two-dimensional gravest empirical mode determined from hydrographic observations in the Subantarctic Front, J. Phys. Oceanogr., 31 (8), 2186-2209.
60. Weisberg, R. H., and, C. Wang, (1997), Slow variability in the equatorial west-central Pacific in relation to ENSO, J. Clim., 10, 1998-2017.
61. Willis, J. K., (2010), Can in situ floats and satellite altimeters detect long-term changes in Atlantic Ocean overturning?, Geophys. Res. Lett., 37, L06602, doi: 10.1029/2010GL042372.
62. Willis, J. K., and L.-L. Fu (2008), Combining altimeter and subsurface float data to estimate the time-averaged circulation in the upper ocean, J. Geophys. Res., 113, C12017, doi: 10.1029/2007JC004690.
63. Zhang, D., R. Msadek, M. J. McPhaden, and, T. Delworth, (2011), Multidecadal variability of the North Brazil current and its connection to the Atlantic meridional overturning circulation, J. Geophys. Res., 116, C04012, doi: 10.1029/2010JC006812.
64. Zhang, R., (2010), Latitudinal dependence of Atlantic meridional overturning circulation (AMOC) variations, Geophys. Res. Lett., 37, L16703, doi: 10.1029/2010GL044474.
65. Zhang, R., and, T. L. Delworth, (2006), Impact of Atlantic multidecadal oscillations on India/Sahel rainfall and Atlantic hurricanes, Geophys. Res. Lett., 33, L17712, doi: 10.1029/2006GL026267.