World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

A Vertical-mode Decomposition to Investigate Low-frequency Internal Motion Across the Atlantic at 26° N : Volume 8, Issue 5 (05/10/2011)

By Szuts, Z. B.

Click here to view

Book Id: WPLBN0003988080
Format Type: PDF Article :
File Size: Pages 54
Reproduction Date: 2015

Title: A Vertical-mode Decomposition to Investigate Low-frequency Internal Motion Across the Atlantic at 26° N : Volume 8, Issue 5 (05/10/2011)  
Author: Szuts, Z. B.
Volume: Vol. 8, Issue 5
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2011
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Marotzke, J., Chidichimo, M. P., Blundell, J. R., & Szuts, Z. B. (2011). A Vertical-mode Decomposition to Investigate Low-frequency Internal Motion Across the Atlantic at 26° N : Volume 8, Issue 5 (05/10/2011). Retrieved from http://hawaiilibrary.net/


Description
Description: Max-Planck-Institut für Meteorologie, Hamburg, Germany. Hydrographic data from full-depth moorings maintained by the RAPID/MOCHA project that span the Atlantic at 26° N are decomposed into vertical modes, in order to give a dynamical framework for interpreting the observed fluctuations. Vertical modes at each mooring are fit to pressure perturbations using a Gauss-Markov inversion. Away from boundaries, the vertical structure is almost entirely described by the first baroclinic mode, as confirmed by high correlation between the original signal and reconstructions using only the first baroclinic mode. These first baroclinic motions are also highly coherent with altimetric sea surface height (SSH). On both the western and eastern boundaries, however, the decomposition contains significant variance at higher modes, and there is a corresponding decrease in the agreement between SSH and either the original signal or the first baroclinic mode reconstruction. At the boundaries, the transport fluctuations described by the first baroclinic mode represent less than 10% of the variance of the full transport signal. At the eastern boundary, a linear combination of many baroclinic modes is required to explain the observed vertical density profile of the seasonal cycle, a result that is consistent with the oceanic response to wind-forcing not propagating far from the eastern boundary.

Summary
A vertical-mode decomposition to investigate low-frequency internal motion across the Atlantic at 26° N

Excerpt
Alford, M. H.: Redistribution of energy available for ocean mixing by long-range propagation of internal waves, Nature, 423, 159–162, 2003.; Bryden, H. L., Mujahid, A., Cunningham, S. A., and Kanzow, T.: Adjustment of the basin-scale circulation at 26° N to variations in Gulf Stream, deep western boundary current and Ekman transports as observed by the Rapid array, Ocean Sci., 5, 421–433, doi:10.5194/os-5-421-2009, 2009.; Chelton, D. B., de Szoeke, R. A., Schlax, M. G., El Naggar, K., and Siwertz, N.: Geographic variability of the first baroclinic {R}ossby radius of deformation, J. Phys. Oceanogr., 28, 433–460, 1998.; Chelton, D. B., Schlax, M. G., Samelson, R. M., and de Szoeke, R. A.: Global observations of large oceanic eddies, Geophys. Res. Lett., 34, L15606, doi:10.1029/2007GL030812, 2007.; Chidichimo, M. P.: Eastern-boundary baroclinic variability and the meridional overturning circulation at 26.5N, Reports on Earth System Science (Ph.D. thesis) 84, Max Planck Institute for Meteorology, Hamburg, Germany, iSSN 1614-1199, 2010.; Chidichimo, M. P., Kanzow, T., Cunningham, S. A., Johns, W. E., and Marotzke, J.: The contribution of eastern-boundary density variations to the Atlantic meridional overturning circulation at 26.5° N, Ocean Sci., 6, 475–490, doi:10.5194/os-6-475-2010, 2010.; Chidichimo, M. P., Kanzow, T., and Marotzke, J.: Spatial structure of the seasonal circulation at 26 N in the Atlantic, in preparation, 2011.; 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 A}tlantic meridional overturning circulation at 26.5 degrees {N, Science, 317, 935–938, doi:10.1126/science.1141304, 2007.; Emery, W. J. and Thomson, R. E.: Data analysis methods in physical oceanography, Pergamon, Elsevier Science Ltd, Oxford, UK, 1st edn., 1997.; Gerkema, T.: Comment on Internal-tide energy over topography by S. M.\ Kelly et al., J. Geophys. Res., 116, C07029, doi:10.1029/2010JC006611, 2011.; Gill, A. E.: Atmosphere-Ocean Dynamics, vol. 30 of International Geophysics Series, Academic Press, San Diego, CA, 666 pp., 1982.; Hirschi, J. J.-M., Killworth, P. D., and Blundell, J. R.: Subannual, seasonal and interannual variability of the {N}orth {A}tlantic meridional overturning circulation, J. Phys. Oceanogr., 37, 1246–1265, 2007.; Hirschi, J. J. M., Killworth, P. D., Blundell, J. R., and Cromwell, D.: Sea Surface Height Signals as Indicators for Oceanic Meridional Mass Transports, J. Phys. Oceanogr., 39, 581–601, doi:10.1175/2008JPO3923.1, 2009.; Johns, W., Kanzow, T., and Zantopp, R.: Estimating ocean transports with dynamic height moorings: An application in the Atlantic Deep Western Boundary Current at 26 degrees N, Deep-Sea Res. Pt. I, 52, 1542–1567, doi:10.1016/j.dsr.2005.02.002, 2005.; Johns, W. E., Beal, L. M., Baringer, M. O., Molina, J. R., Cunningham, S. A., Kanzow, T., and Rayner, D.: Variability of shallow and deep western boundary currents off the Bahamas during 2004–05: Results from the 26 degrees N RAPID-MOC array, J. Phys. Oceanogr., 38, 605–623, doi:10.1175/2007JPO3791.1

 

Click To View

Additional Books


  • A Geographical and Seasonal Comparison o... (by )
  • Consistency of the Current Global Ocean ... (by )
  • Chemical and Physical Transformations of... (by )
  • Effects of Mesoscale Eddies on Global Oc... (by )
  • Indian Ocean Subtropical Mode Water: Its... (by )
  • El Niño in a Changing Climate: a Multi-m... (by )
  • Image of a Subsurface Current Core in th... (by )
  • A Numerical Scheme to Calculate Temperat... (by )
  • Weighing the Ocean with Bottom-pressure ... (by )
  • The Gyre-scale Circulation of the North ... (by )
  • Barents Sea Heat – Transport, Storage an... (by )
  • Near-surface Diurnal Warming Simulations... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from Hawaii 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.