Journal
GEOPHYSICAL RESEARCH LETTERS
Volume 38, Issue -, Pages -Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1029/2011GL048142
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Funding
- NASA [NNX08AH62G]
- NASA [100903, NNX08AH62G] Funding Source: Federal RePORTER
- Directorate For Geosciences
- Div Atmospheric & Geospace Sciences [0812802] Funding Source: National Science Foundation
- Office of Polar Programs (OPP)
- Directorate For Geosciences [0901987, 0908769] Funding Source: National Science Foundation
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A sub-monthly mode of non-tidal variability of ocean bottom pressure (OBP) is observed in a 5-year record of deep-sea bottom pressure at the North Pole. OBP records from other regions in the Arctic show that the North Pole non-tidal mass fluctuation is part of a non-propagating basin-coherent variation that is well represented by the ice-ocean model PIOMAS, with a basin-averaged winter-only RMS of 3.3 cm. Wavelet analysis of the modeled OBP shows that the basin-averaged mass variations are non-stationary and only significant during the winter. The basin-averaged OBP is strongly related to the meridional wind component over the Nordic Seas. The ocean response is consistent with episodic wind forcing driving a northward geostrophic slope current. The mass transport anomaly associated with the mode is significant relative to the annual net mean flow. Citation: Peralta-Ferriz, C., J. H. Morison, J. M. Wallace, and J. Zhang (2011), A basin-coherent mode of sub-monthly variability in Arctic Ocean bottom pressure, Geophys. Res. Lett., 38, L14606, doi:10.1029/2011GL048142.
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