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Benjamin Shaw

The North Atlantic Meridional Overturning Circulation (AMOC) plays a crucial role in regulating climate patterns. Studies link AMOC variability to abrupt climate changes, posing potential risks due to anthropogenic forcing that could lead to its shutdown, causing global cooling. Current knowledge about AMOC's state, variability time scales, causes, and expected impacts is limited. To mitigate risks, establishing a dedicated monitoring system is essential. This initiative includes data comparisons from the RAPID-MOCHA Array and recent ocean observation results.

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Benjamin Shaw

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  1. Benjamin Shaw www.rsmas.miami.edu/personal/bshaw

  2. Global Thermohaline Circulation http://www.noc.soton.ac.uk/rapid/rapid.php

  3. Studies link AMOC variability to abrupt climate change • Anthropogenic forcing could cause the AMOC to shut down, causing global cooling. • We don't know much about AMOC • What's its current state? • On what time scales does the AMOC vary? • What causes these variations? • What impacts can we expect from AMOC variability? • Can we predict them? • Solution: design & install a monitoring system Why do we study the North Atlantic Meridional Overturning Circulation?

  4. RAPID-MOCHA Array April 2008 RAPID-MOCHA Cruise Prospectus www.charts.noaa.gov Johns et al. (2008)‏

  5. Sea-going Oceanography

  6. Mooring Array – 1st Year Results Cunningham et al. (2007)‏

  7. Mooring Array – 4 year timeseries Johns et al. (submitted)‏

  8. Comparing Data to Model Output

  9. Northward Transport: Model vs. Observations Johns et al. (2008)‏ 0.1-degree POP Model Output

  10. Lower Ocean Currents Western Boundary Wedge Cross Section

  11. Thanks, and welcome to RSMAS!

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