| Title | The mean surface circulation of the North Atlantic subpolar gyre: A comparison of estimates derived from new gravity and oceanographic measurements |
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| Author | Higginson, S; Thompson, K R; Huang, J ; Véronneau, M; Wright, D G |
| Source | Journal of Geophysical Research vol. 116, C08016, 2011 p. 1-14, https://doi.org/10.1029/2010JC006877 |
| Image |  |
| Year | 2011 |
| Alt Series | Earth Sciences Sector, Contribution Series 20110378 |
| Publisher | Wiley-Blackwell |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Province | Eastern offshore region |
| Area | northwest Atlantic; Atlantic Ocean; Labrador Sea |
| Lat/Long WENS | -60.0000 -20.0000 68.0000 44.0000 |
| Subjects | marine geology; geophysics; oceanographic surveys; oceanography; offshore currents; currents; geophysical surveys; gravity; gravity surveys |
| Illustrations | location maps |
| Released | 2011 08 20 |
| Abstract | A new mean sea surface topography (MSST) is used to estimate the surface circulation of the subpolar gyre of the northwest Atlantic. The MSST is produced using a new geoid model derived from a blend of
gravity data from the Gravity Recovery and Climate Experiment (GRACE) satellite mission, satellite altimeters, and terrestrial measurements. The MSST is compared with a topography produced by an ocean model which is spectrally nudged to a new Argo
period temperature and salinity climatology. The mean surface circulation associated with the geodetic MSST is compared with estimates of the circulation from surface drifters, moorings, and other in situ measurements. The geodetic MSST and
circulation estimate are found to be in good agreement with the other estimates, both qualitatively and quantitatively. The topography is found to be an improvement over an earlier geodetic estimate with better resolution of the coastal currents.
Deficiencies are identified in the ocean model's estimate of flow over shelf regions. |
| GEOSCAN ID | 289913 |
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