2012 Project Summary Satellite Multi-‐Sensor Studies of Deep Ocean Convection in North Atlantic Ocean
The objective of this project is [1) to analyze air-‐sea interaction and meridional heat and freshwater transport estimations to identify regions associated with preconditioning and lateral exchange prior to and post Deep Convection, 2) to analyze horizontal flow field and vertical water column anal...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.431.9583 http://www.usclivar.org/sites/default/files/amoc/Yan_2012AMOC_projsum.pdf |
| Summary: | The objective of this project is [1) to analyze air-‐sea interaction and meridional heat and freshwater transport estimations to identify regions associated with preconditioning and lateral exchange prior to and post Deep Convection, 2) to analyze horizontal flow field and vertical water column analysis, and 3) to find linkage between DOC and subsurface thermal structure estimated from satellite multi-‐sensor data. Recent Results (1) Sea level trends in the North Atlantic based on different temporal scales based on Ensemble Empirical Mode Decomposition (EEMD) were analyzed to identify dominant forcing, resulting in that the trends are not geographically uniform over the ocean. While the areas of the relatively high sea level rise trends are associated with decadal time scales, the decreasing sea level rise trend in the Northern Recirculation Gyre (NRG) was associated with interannual variability (Li, et al., 2011a). The results related AMOC strength based on Complex Empirical Orthogonal Function (CEOF) shows that the AMOC strength was decreasing after 1999 (Jo et al., 2011). (2) Geostrophic velocities derived from altimeter data shows that the trends of cyclonic |
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