COAPS Virtual Library (Publications)

Xu, X., Bower, A., Furey, H., & Chassignet, E. P. (2018). Variability of the Iceland-Scotland Overflow Water Transport Through the Charlie-Gibbs Fracture Zone: Results From an Eddying Simulation and Observations. J. Geophys. Res. Oceans, 123(8), 5808–5823. Abstract: Observations show that the westward transport of the Iceland‐Scotland overflow water (ISOW) through the Charlie‐Gibbs Fracture Zone (CGFZ) is highly variable. This study examines (a) where this variability comes from and (b) how it is related to the variability of ISOW transport at upstream locations in the Iceland Basin and other ISOW flow pathways. The analyses are based on a 35‐year 1/12° eddying Atlantic simulation that represents well the main features of the observed ISOW in the area of interest, in particular, the transport variability through the CGFZ. The results show that (a) the variability of the ISOW transport is closely correlated with that of the barotropic transports in the CGFZ associated with the meridional displacement of the North Atlantic Current front and is possibly induced by fluctuations of large‐scale zonal wind stress in the Western European Basin east of the CGFZ; (b) the variability of the ISOW transport is increased by a factor of 3 from the northern part of the Iceland Basin to the CGFZ region and transport time series at these two locations are not correlated, further suggesting that the variability at the CGFZ does not come from the upstream source; and (c) the variability of the ISOW transport at the CGFZ is strongly anticorrelated to that of the southward ISOW transport along the eastern flank of the Mid‐Atlantic Ridge, suggesting an out‐of‐phase covarying transport between these two ISOW pathways. Keywords: Iceland; Scotland overflow water; Charlie; Gibbs fracture zone; variability; volume transport; eddying simulation https://www.coaps.fsu.edu/bibliography/show.php?record=952
Meyers, S. D., & O'Brien, J. J. (1995). Pacific Ocean influences atmospheric carbon dioxide. Eos Trans. AGU, 76(52), 533. https://www.coaps.fsu.edu/bibliography/show.php?record=716
Bourassa, M. A., Freilich, M. H., Legler, D. M., Liu, W. T., & O'Brien, J. J. (1997). Wind observations from new satellite and research vessels agree (Vol. 78). https://www.coaps.fsu.edu/bibliography/show.php?record=726
Latif, M., Anderson, D., Barnett, T., Cane, M., Kleeman, R., Leetmaa, A., et al. (1998). A review of the predictability and prediction of ENSO. J. Geophys. Res., 103(C7), 14375–14393. https://www.coaps.fsu.edu/bibliography/show.php?record=746
Meyers, S. D., Melsom, A., Mitchum, G. T., & O'Brien, J. J. (1998). Detection of the fast Kelvin wave teleconnection due to El Niño-Southern Oscillation. J. Geophys. Res., 103(C12), 27655–27663. https://www.coaps.fsu.edu/bibliography/show.php?record=534
Grant, J., Erlebacher, G., & O'Brien, J. (2002). Case study: Visualizing ocean flow vertical motions using Lagrangian-Eulerian time surfaces. In IEEE Visualization 2002 Conference (pp. 529–532). Keywords: unsteady vector fields; time surfaces; ocean currents; vertical velocity https://www.coaps.fsu.edu/bibliography/show.php?record=502
Weissman, D. E., Bourassa, M. A., O'Brien, J. J., & Tongue, J. S. (2003). Calibrating the quikscat/seawinds radar for measuring rainrate over the oceans. IEEE Trans. Geosci. Remote Sensing, 41(12), 2814–2820. Keywords: Next Generation Weather Radar (NEXRAD); precipitation; radar reflectivity; scatterometer normalized radar cross section (NRCS); space-based radar; Tropical Rain Measuring Mission (TRMM) https://www.coaps.fsu.edu/bibliography/show.php?record=468
Morey, S. L., Zavala-Hidalgo, J., & O'Brien, J. J. (2003). Impacts of vertical resolution on a numerical model of the Gulf of Mexico. In OCEANS 2003 MTS/IEEE: Celebrating the Past... Teaming toward the Future (pp. 435–438). https://www.coaps.fsu.edu/bibliography/show.php?record=486
Subrahmanyam, B., Murty, V. S. N., & O'Brien, J. J. (2003). New sea surface salinity product in the tropical Indian Ocean estimated from Outgoing Longwave Radiation. In OCEANS 2003 MTS/IEEE: Celebrating the Past... Teaming toward the Future (pp. 1835–1838). https://www.coaps.fsu.edu/bibliography/show.php?record=487
Yu, P., Zavala-Hidalgo, J., Morey, S. L., & O'Brien, J. J. (2003). A new mapping method for propagating data. In OCEANS 2003 MTS/IEEE: Celebrating the Past... Teaming toward the Future (pp. 2804–2807). https://www.coaps.fsu.edu/bibliography/show.php?record=488

Abstract: Observations show that the westward transport of the Iceland‐Scotland overflow water (ISOW) through the Charlie‐Gibbs Fracture Zone (CGFZ) is highly variable. This study examines (a) where this variability comes from and (b) how it is related to the variability of ISOW transport at upstream locations in the Iceland Basin and other ISOW flow pathways. The analyses are based on a 35‐year 1/12° eddying Atlantic simulation that represents well the main features of the observed ISOW in the area of interest, in particular, the transport variability through the CGFZ. The results show that (a) the variability of the ISOW transport is closely correlated with that of the barotropic transports in the CGFZ associated with the meridional displacement of the North Atlantic Current front and is possibly induced by fluctuations of large‐scale zonal wind stress in the Western European Basin east of the CGFZ; (b) the variability of the ISOW transport is increased by a factor of 3 from the northern part of the Iceland Basin to the CGFZ region and transport time series at these two locations are not correlated, further suggesting that the variability at the CGFZ does not come from the upstream source; and (c) the variability of the ISOW transport at the CGFZ is strongly anticorrelated to that of the southward ISOW transport along the eastern flank of the Mid‐Atlantic Ridge, suggesting an out‐of‐phase covarying transport between these two ISOW pathways.

Keywords: Iceland; Scotland overflow water; Charlie; Gibbs fracture zone; variability; volume transport; eddying simulation

https://www.coaps.fsu.edu/bibliography/show.php?record=952

© 2024 Center for Ocean-Atmospheric Prediction Studies (COAPS), Florida State University