Global sea level reconstruction for 1900–2015 reveals regional variability in ocean dynamics and an unprecedented long weakening in the Gulf Stream flow since the 1990s

Ezer, Tal; Dangendorf, Sönke

doi:https://doi.org/10.5194/os-16-997-2020

Articles | Volume 16, issue 4

https://doi.org/10.5194/os-16-997-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/os-16-997-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 4

Research article

|

27 Aug 2020

Research article |

| 27 Aug 2020

Global sea level reconstruction for 1900–2015 reveals regional variability in ocean dynamics and an unprecedented long weakening in the Gulf Stream flow since the 1990s

Tal Ezer and Sönke Dangendorf

Data sets

AMO index NOAA https://www.esrl.noaa.gov/psd/data/timeseries/AMO/

Florida CurrentTransport Time Series and Cruises NOAA/AOML http://www.aoml.noaa.gov/phod/floridacurrent/

Short summary

Regional variability and changes in ocean dynamics during 1900–2015 were obtained in the western North Atlantic Ocean from a global sea level reconstruction. An unprecedented long period of weakening in the Gulf Stream (GS) flow since the late 1990s was found. The variability and slowdown of the GS were related to the Atlantic Meridional Overturning Circulation. The reconstruction captured observed variability in the coastal sea level and GS flow on timescales of ∼5–50 years very well.