Estimating the Meridional Overturning Estimating the Meridional Overturning Circulation (MOC) in the Atlantic Circulation (MOC) in the Atlantic Greg Pinkel Greg Pinkel Mentor: Dimitris Menemenlis Mentor: Dimitris Menemenlis Comentor: Michael Schodlok Comentor: Michael Schodlok
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Estimating the Meridional Overturning Circulation (MOC) in the Atlantic
Estimating the Meridional Overturning Circulation (MOC) in the Atlantic. Greg Pinkel Mentor: Dimitris Menemenlis Comentor: Michael Schodlok. Outline. MOC: Meridional Overturning Circulation - PowerPoint PPT Presentation
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Estimating the Meridional Overturning Circulation Estimating the Meridional Overturning Circulation (MOC) in the Atlantic(MOC) in the Atlantic
Greg PinkelGreg PinkelMentor: Dimitris MenemenlisMentor: Dimitris MenemenlisComentor: Michael SchodlokComentor: Michael Schodlok
● Deployed in March 2004 to monitor MOC at 26 degrees N
● 19 Moorings measure variations in pressure, temperature, and salinity
● Determine density at different depths
ECCO2: Estimating the Circulation and Climate of the Ocean, Phase II
● High resolution global-ocean and sea-ice data synthesis
● ECCO2 is a project from collaboration between JPL, MIT, and SIO (Scripps Institution of Oceanography)
● The estimates are derived from a least-squares fit (or regression) of the MIT-gcm model (MIT general circulation model) to observations
● Cubed-Sphere model
– ¼ degree grid
– 50 depth levels
– 1 cube per month
Rapid/ECCO2 Cube78 Comparisons
Summary/Outlook
● Model and In-situ Temperature data agree well for East and West Boundaries ● Model and In-situ Salinity data correspond well for Western Boundary ● Meridional velocities correlate to depths of ~1000m ● Zonal velocities don't agree but have similar trends
● Grid spacing, differences in depth spacing, interpolation, and large averages may account for some differences ● ECCO2 could be improved by using the RAPID data to further constrain the model
Acknowledgments
● Mentor: Dimitris Menemenlis ● Comentor: Michael Schodlok ● Robin McCandliss (BODC) ● The British Oceanographic Data Centre (BODC) ● JPL ● Caltech