dc.rights.license | CC-BY-NC-ND | |
dc.contributor.advisor | Dijkstra, H.A. | |
dc.contributor.author | Westen, R.M. van | |
dc.date.accessioned | 2016-08-10T17:00:31Z | |
dc.date.available | 2016-08-10T17:00:31Z | |
dc.date.issued | 2016 | |
dc.identifier.uri | https://studenttheses.uu.nl/handle/20.500.12932/23424 | |
dc.description.abstract | A new mode of multidecadal variability in the Southern Ocean, the so-called Southern Ocean Mode (SOM), has recently been discovered by Le Bars et al. (2016) in the strongly eddying version of the Parallel Ocean Program (POP). This mode has a corresponding period of 40 - 50 years and affects the variability in the Atlantic Meridional Overturning Circulation (AMOC) and the North Brazil Current (NBC). Using multi-channel singular spectral analysis on the POP output, also multidecadal variability was found in the NBC. This result suggests a teleconnection between the Southern Ocean and the NBC. The northward propagating multidecadal signal is clearly visible in SSH in the Southern Ocean, but submerges at 40°S. Anomalies in ocean heat content and temperature are observed between 40° - 5°S, at depths up to 1 km, and re-emerge near the equator where the anomalies propagate towards the NBC. This provides the evidence that the multidecadal signal found in the NBC has a Southern Ocean origin, and hence connected to the SOM. | |
dc.description.sponsorship | Utrecht University | |
dc.format.extent | 6072580 | |
dc.format.mimetype | application/pdf | |
dc.language.iso | en | |
dc.title | Southern Ocean Origin of Multidecadal Variability in the North Brazil Current | |
dc.type.content | Master Thesis | |
dc.rights.accessrights | Open Access | |
dc.subject.keywords | North Brazil Current, Multidecadal variability, Southern Ocean Mode, Teleconnection | |
dc.subject.courseuu | Meteorology, Physical Oceanography and Climate | |