GEOMAR Helmholtz Centre for Ocean Research Kiel
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November 8, 2021: Ocean Circulation and Climate Dynamics Colloquium
Dr. Levke Caesar, Post Doctoral Researcher, Geography, Irish Climate Analysis and Research UnitS at Maynooth University: "The evolution of the Atlantic Meridional Overturning Circulation from Decades to Millenia"
When?: Monday, 8. November 2021 at 11 am
Where?: ZOOM meeting room: https://geomar-de.zoom.us/j/86964972044?pwd=TlRpdUxIYkpkYjhjTFFSZFEvUGhEdz09
Meeting-ID: 869 6497 2044
Kenncode: 092530
Abstract:
The Atlantic Meridional Overturning Circulation (AMOC)—one of Earth’s major ocean circulation systems—redistributes heat on our planet and has a major impact on climate. Its past and future strength are therefore of major interest, but the system is not easily measured.
In my presentation I will present a consistent picture of the evolution of the AMOC over different time scales and from different sources: From the about 15 years of direct continuous observational data, over reanalysis products and ship measurements to temperature and ocean sediment proxy data.
The overview shows that while the AMOC displays a large amount of natural variability over the different time scales, its behaviour over the last one to two hundred years is unprecedented compared to the last 1,600 years and it is fairly certain that the AMOC over the last decades has been weaker than ever before in that time period.
