On the modulation of the periodicity of the Faroe Bank Channel overflow instabilities

Darelius, E.; Fer, I.; Rasmussen, T.; Guo, C.; Larsen, K. M. H.

doi:https://doi.org/10.5194/os-11-855-2015

Articles | Volume 11, issue 5

https://doi.org/10.5194/os-11-855-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/os-11-855-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 11, issue 5

Research article

|

26 Oct 2015

Research article |

| 26 Oct 2015

On the modulation of the periodicity of the Faroe Bank Channel overflow instabilities

E. Darelius, I. Fer, T. Rasmussen, C. Guo, and K. M. H. Larsen

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Final revised paper (published on 26 Oct 2015)
Preprint (discussion started on 21 May 2015)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC C355: 'Referee Comments', Anonymous Referee #1, 30 Jun 2015
- AC C741: 'Response to the comments by reviewer 1', Elin Darelius, 24 Sep 2015
RC C404: 'Review of "On the modulation of the periodicity of the Faroe Bank Channel overflow instabilities"', Anonymous Referee #2, 10 Jul 2015
- AC C754: 'Response to comments by reviewer 2', Elin Darelius, 24 Sep 2015

Short summary

Quasi-regular eddies are known to be generated in the outflow of dense water through the Faroe Bank Channel. One year long mooring records from the plume region show that (1) the energy associated with the eddies varies by a factor of 10 throughout the year and (2) the frequency of the eddies shifts between 3 and 6 days and is related to the strength of the outflow. Similar variability is shown by a high-resolution regional model and the observations agree with theory on baroclinic instability.