World Library  

Add to Book Shelf
Flag as Inappropriate
Email this Book

A Multi-decadal Meridional Displacement of the Subpolar Front in the Newfoundland Basin : Volume 8, Issue 1 (15/02/2012)

By Núñez-riboni, I.

Click here to view

Book Id: WPLBN0004020620
Format Type: PDF Article :
File Size: Pages 12
Reproduction Date: 2015

Title: A Multi-decadal Meridional Displacement of the Subpolar Front in the Newfoundland Basin : Volume 8, Issue 1 (15/02/2012)  
Author: Núñez-riboni, I.
Volume: Vol. 8, Issue 1
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


APA MLA Chicago

Jungclaus, J. H., Bersch, M., Haak, H., Núñez-Riboni, I., & Lohmann, K. (2012). A Multi-decadal Meridional Displacement of the Subpolar Front in the Newfoundland Basin : Volume 8, Issue 1 (15/02/2012). Retrieved from

Description: Max-Planck-Institut für Meteorologie, Bundesstr. 53, 20146 Hamburg, Germany. Observations since the 1950s show a multi-decadal cycle of a meridional displacement of the Subpolar Front (SPF) in the Newfoundland Basin (NFB) in the North Atlantic. The SPF displacement is associated with corresponding variations in the path of the North Atlantic Current. We use the ocean general circulation model MPIOM with enhanced horizontal and vertical resolutions and forced with NCEP/NCAR reanalysis data to study the relation of the SPF displacement to atmospheric forcing, intensities of the subpolar gyre (SPG) and Meridional Overturning Circulation (MOC), and Labrador Sea Water (LSW) volume. The simulations indicate that the SPF displacement is associated with a circulation anomaly between the SPG and the subtropical gyre (STG), an inter-gyre gyre with a multi-decadal time scale. A sensitivity experiment indicates that both wind stress curl (WSC) and heat fluxes (which match LSW changes) contribute to the circulation anomalies in the frontal region and to the SPF displacement. An anticyclonic inter-gyre gyre is related to negative WSC and LSW anomalies and to a SPF north of its climatological position, indicating an expanding STG. A cyclonic inter-gyre gyre is related to positive WSC and LSW anomalies and a SPF south of its climatological position, indicating an expanding SPG. Therefore, the mean latitudinal position of the SPF in the NFB (a SPF index) could be an indicator of the amount of LSW in the inter-gyre region. Spreading of LSW anomalies intensifies the MOC, suggesting our SPF index as predictor of the MOC intensity at multi-decadal time scales. The meridional displacement of the SPF has a pronounced influence on the meridional heat transport, both on its gyre and overturning components.

A multi-decadal meridional displacement of the Subpolar Front in the Newfoundland Basin

Bacon, S.: Circulation and Fluxes in the North Atlantic between Greenland and Ireland, J. Phys. Oceanogr., 27, 1420–1435, 1997.; Belkin, I. M., Levitus, S., Antonov, J., and Malmberg, S.-A.: Great Salinity Anomalies in the North Atlantic, Prog. Oceanogr., 41, 1–68, 1998.; Bersch, M.: On the circulation of the northeastern North Atlantic, Deep-Sea Res. Pt. I, 42, 9, 1583–1607, 1995.; Bersch, M.: North Atlantic Oscillation–induced changes of the upper layer circulation in the northern North Atlantic Ocean, J. Geophys. Res., 107, C10, 1–11, 2002.; Bersch, M., Meincke, J., and Sy, A.: Interannual thermohaline changes in the northern North Atlantic 1991-1996, Deep-Sea Res. Pt. II, 46, 55–75, 1999.; Bersch, M., Yashayaev, I., and Koltermann, K. P.: Recent changes of the thermohaline circulation in the subpolar North Atlantic, Ocean Dynam., 57, 223–235, 2007.; Böning, C. W., Scheinert, M., Dengg, J., Biastoch, A., and Funk, A.: Decadal variability of subpolar gyre transport and its reverberation in the North Atlantic overturning, Geophys. Res. Lett., 33, L21S01, 1–5, 2006.; Boyer, T. P., Antonov, J. I., Garcia, H. E., Johnson, D. R., Locarnini, R. A., Mishonov, A. V., Pitcher, M. T., Baranova, O. K., and Smolyar, I. V.: World Ocean Database 2005, NOAA Atlas NESDIS 60, U.S. Department of Commerce, Silver Spring, MD., 2006.; Brauch, J. P. and Gerdes, R.: Response of the northern North Atlantic and Arctic oceans to a sudden change of the North Atlantic Oscillation, J. Geophy. Res., 110, C11018, 1–16, 2005.; Cayan, D. R.: Latent and sensible heat flux anomalies over the northern oceans: driving the sea surface temperature, J. Phys. Oceanogr., 22, 859–881, 1992.; Clarke, R. A.: Transport through the Cape Farewell-Flemish Cap section, Rapports et Procès-Verbaux des Réunions du Conseil International pour l'Exploration de la Mer, 185, 120–130, 1984.; Cunningham, S. A., Kanzow, T., Rayner, D., Baringer, M. O., Johns, W. E., Marotzke, J., Longworth, H. R., Grant, E. M., Hirschi, J. J.-M., Beal, L. M., Meinen, C. S., and Bryden, H. L.: Temporal Variability of the Atlantic Meridional Overturning Circulation at 26.5° N, Nature, 317, 935–937, 2007.; Curry, R. G.: HydroBase2: A Database of Hydrographic Profiles and Tools for Climatological Analysis, Woods Hole Oceanographic Institution, USA, 2002.; Curry, R. G. and McCartney, M. S.: Ocean Gyre Circulation Changes Associated with the North Atlantic Oscillation, J. Phys. Oceanogr., 31, 3374–3400, 2001.; Curry, R. G., McCartney, M. S., and Joyce, T. M.: Oceanic transport of subpolar climate signals to mid-depth subtropical waters, Nature, 391, 5, 575–577, 1998.; Eden, C. and Greatbatch, R. J.: A Damped Decadal Oscillation in the North Atlantic Climate System, J. Climate, 16, 4043–4060, 2003.; Eden, C. and Jung, T.: North Atlantic Interdecadal Variability: Oceanic Response to the North Atlantic Oscillation (1865–1997), J. Climate, 14, 676–691, 2001.; Eden, C. and Willebrand, J.: Mechanism of Interannual to Decadal Variability of the North Atlantic Circulation, J. Climate, 14, 2266-2280, 2001.; Frankignoul, C., Coëtlogon, G. d., Joyce, T. M., and Dong, S.: Gulf Stream Variability and Ocean–Atmosphere Interactions, J. Phys. Oceanogr., 31, 3516–3529, 2001.; Haak, H., Jungclaus, J., Mikolajewicz, U., and Latif, M.: Formation and propagation of great salinity anomalies, Geophys. Res. Lett., 30, 9, 1–4, 2003.; Frankignoul, C., Deshayes, J., and Curry, R.: The role of salinity in the decadal variability of the North Atlantic meridional overturning circulation, edited by: Frankignoul, C., Deshayes, J., Curry, R., Clim. Dynam., 33, 777–793, 2009.; Griffies, S. M., Biastoch, A., Böning, C., Bryan, F., Danabasoglu, G., Chassignet, E. P., England, M. H., Gerdes, R., Haak, H., Hallberg, R. W., Hazeleger, W., Jungclaus, J., Large, W. G., Madec, G., Pirani, A., Samuels, B. L., Scheinert, M., Gupta, A. S., Severijns, C. A., Simmons, H. L., Treguier, A. M., Winton, M., Yeager, S., Yin, J.: Coordinate


Click To View

Additional Books

  • On the Representation of Regional Charac... (by )
  • Wind Forcing and Fate of Sardinella Auri... (by )
  • Daily Scale Winter-time Sea Surface Temp... (by )
  • Is Coccolithophore Distribution in the M... (by )
  • Sea Level Trend and Variability in the S... (by )
  • Controlling Atmospheric Forcing Paramete... (by )
  • On the Fast Response of the Southern Oce... (by )
  • Assimilation of Sla Along Track Observat... (by )
  • Propagation and Dissipation of Internal ... (by )
  • Obstacles and Benefits of the Implementa... (by )
  • Variability of Antarctic Intermediate Wa... (by )
  • A Numerical Scheme to Calculate Temperat... (by )
Scroll Left
Scroll Right


Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.