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Atlantic meridional overturning circulation stable over the last 150 years

Author

Listed:
  • Parker Albert

    (Independent Scientist, Bundoora, Australia)

  • Ollier Clifford

    (School of Agriculture and Environment, University of Western Australia, Perth, Australia)

Abstract

The Atlantic Meridional Overturning Circulation (AMOC) describes the northward flow of warm, salty water in the upper layers, and the southward flow of colder water in the deep Atlantic layers. AMOC strength estimates at 41°N latitude based on satellite sea surface height (SSH), and ARGO ocean temperature, salinity and velocity, and finally the difference in between the absolute mean sea levels (MSL) of the tide gauges of The Battery, New York, 40.7°N latitude, and Brest, 48.3°N latitude. Results suggest that the AMOC has been minimally reducing but with a positive acceleration since 2002, has been marginally increasing but with a negative acceleration since 1993, and has not been reducing but only oscillating with clear periodicities up 18 years, 27 years and about 60 years since 1856.

Suggested Citation

  • Parker Albert & Ollier Clifford, 2019. "Atlantic meridional overturning circulation stable over the last 150 years," Quaestiones Geographicae, Sciendo, vol. 38(3), pages 31-40, September.
    • Handle: RePEc:vrs:quageo:v:38:y:2019:i:3:p:31-40:n:3
    DOI: 10.2478/quageo-2019-0026
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    References listed on IDEAS

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    1. Asbury H. Sallenger & Kara S. Doran & Peter A. Howd, 2012. "Hotspot of accelerated sea-level rise on the Atlantic coast of North America," Nature Climate Change, Nature, vol. 2(12), pages 884-888, December.
    2. Albert Parker, 2013. "Oscillations of sea level rise along the Atlantic coast of North America north of Cape Hatteras," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 65(1), pages 991-997, January.
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