Please use this identifier to cite or link to this item:
http://hdl.handle.net/1942/26700
Title: | Structure and forcing of observed exchanges across the Greenland-Scotland Ridge | Authors: | BRINGEDAL, Carina Eldevik, Tor Skagseth, Øystein Spall, Michael A. Østerhus, Svein |
Issue Date: | 2018 | Source: | Journal of climate, 31 (24), p. 9881-9901 | Abstract: | The Atlantic Meridional Overturning Circulation and associated poleward heat transport are balanced by northern heat loss to the atmosphere and corresponding water mass transformation. The circulation of northwards flowing Atlantic Water in the surface and returning Overflow Water at depth is particularly manifested - and observed - at the Greenland-Scotland Ridge where the water masses are guided through narrow straits. There is however a rich variability in the exchange of water masses across the ridge on all time scales. Focusing on seasonal and interannual time scales, and particularly the gateways of the Denmark Strait and between Faroe Islands and Shetland, we specifically assess to what extent the exchanges of water masses across the Greenland-Scotland Ridge relate to wind forcing. On seasonal time scales, the variance explained of the observed exchanges can largely be related to large scale wind patterns, and a conceptual model shows how this wind forcing can manifest via a barotropic, cyclonic circulation. On interannual time scales the wind stress impact is less direct as baroclinic mechanisms gain importance and observations indicate a shift in the overflows from being more barotropicly to more baroclinically forced during the observation period. Overall, the observed Greenland-Scotland Ridge exchanges reflect a horizontal (cyclonic) circulation on seasonal time scales, while the interannual variability more represents an overturning circulation | Notes: | Bringedal, C (reprint author), Univ Bergen, Inst Geophys, Bergen, Norway. carina.bringedal@uhasselt.be | Document URI: | http://hdl.handle.net/1942/26700 | ISSN: | 0894-8755 | e-ISSN: | 1520-0442 | DOI: | 10.1175/JCLI-D-17-0889.1 | ISI #: | 000450407600006 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2019 |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
GSRexchangesJCLI_review2.pdf | Peer-reviewed author version | 3.29 MB | Adobe PDF | View/Open |
1520-0442-jcli-d-17-0889.1.pdf Restricted Access | Published version | 3.29 MB | Adobe PDF | View/Open Request a copy |
SCOPUSTM
Citations
7
checked on Sep 3, 2020
WEB OF SCIENCETM
Citations
26
checked on Sep 28, 2024
Page view(s)
48
checked on Sep 5, 2022
Download(s)
110
checked on Sep 5, 2022
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.