World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Multiple Equilibria and Oscillatory Modes in a Mid-latitude Ocean-forced Atmospheric Model : Volume 19, Issue 5 (06/09/2012)

By Deremble, B.

Click here to view

Book Id: WPLBN0003973734
Format Type: PDF Article :
File Size: Pages 21
Reproduction Date: 2015

Title: Multiple Equilibria and Oscillatory Modes in a Mid-latitude Ocean-forced Atmospheric Model : Volume 19, Issue 5 (06/09/2012)  
Author: Deremble, B.
Volume: Vol. 19, Issue 5
Language: English
Subject: Science, Nonlinear, Processes
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2012
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Simonnet, E., Ghil, M., & Deremble, B. (2012). Multiple Equilibria and Oscillatory Modes in a Mid-latitude Ocean-forced Atmospheric Model : Volume 19, Issue 5 (06/09/2012). Retrieved from http://hawaiilibrary.net/


Description
Description: Florida State University, 117 N. Woodward Ave., Tallahassee, FL 32306-4320, USA. Atmospheric response to a mid-latitude sea surface temperature (SST) front is studied, while emphasizing low-frequency modes induced by the presence of such a front. An idealized atmospheric quasi-geostrophic (QG) model is forced by the SST field of an idealized oceanic QG model. First, the equilibria of the oceanic model and the associated SST fronts are computed. Next, these equilibria are used to force the atmospheric model and compute its equilibria when varying the strength of the oceanic forcing.

Low-frequency modes of atmospheric variability are identified and associated with successive Hopf bifurcations. The origin of these Hopf bifurcations is studied in detail, and connected to barotropic instability. Finally, a link is established between the model's time integrations and the previously obtained equilibria.


Summary
Multiple equilibria and oscillatory modes in a mid-latitude ocean-forced atmospheric model

Excerpt
Arakawa, A.: Computational design for long-term numerical integrations of the equations of atmospheric motion, J. Comput. Phys., 1, 119–143, 1966.; Battisti, D. S., Sarachik, E. S., and Hirst, A. C.: A Consistent Model for the Large-Scale Steady Surface Atmospheric Circulation in the Tropics., J. Climate, 12, 2956–2964, 2.0.CO;2>doi:10.1175/1520-0442(1999)012<2956:ACMFTL>2.0.CO;2, 1999.; Bellon, G., Le Treut, H., and Ghil, M.: Large-scale and evaporation-wind feedbacks in a box model of the tropical climate, Geophys. Res. Lett., 30, 220 000–1, doi:10.1029/2003GL017895, 2003.; Berloff, P., Dewar, W., Kravtsov, S., and McWilliams, J.: Ocean Eddy Dynamics in a Coupled Ocean Atmosphere Model, J. Phys. Oceanogr., 37, 1103–1121, doi:10.1175/JPO3041.1, 2007{a}.; Berloff, P., Hogg, A. M., and Dewar, W.: The Turbulent Oscillator: A Mechanism of Low-Frequency Variability of the Wind-Driven Ocean Gyres, J. Phys. Oceanogr., 37, 2363–2386, doi:10.1175/JPO3118.1, 2007{b}.; Brachet, S., Codron, F., Feliks, Y., Ghil, M., Le Treut, H., and Simonnet, E.: Atmospheric circulations induced by a mid-latitude SST front: A GCM study, J. Climate, 25, 1847–1853, doi:10.1175/JCLI-D-11-00329.1, 2012.; Businger, J. and Shaw, W. J.: The response of the marine boundary layer to mesoscale variations in sea-surface temperature, Dyn. Atmos. Ocean, 8, 267–281, doi:10.1016/0377-0265(84)90012-5, 1984.; Cassou, C., Terray, L., Hurrell, J. W., and Deser, C.: North Atlantic Winter Climate Regimes: Spatial Asymmetry, Stationarity with Time, and Oceanic Forcing., J. Climate, 17, 1055–1068, 2.0.CO;2>doi:10.1175/1520-0442(2004)017<1055:NAWCRS>2.0.CO;2, 2004.; Cessi, P. and Ierley, G. R.: Symmetry-Breaking Multiple Equilibria in Quasigeostrophic, Wind-Driven Flows, J. Phys. Oceanogr., 25, 1196–1205, 2.0.CO;2>doi:10.1175/1520-0485(1995)025<1196:SBMEIQ>2.0.CO;2, 1995.; Chang, K. I., Ghil, M., Ide, K., and Lai, C.-C. A.: Transition to aperiodic variability in a wind-driven double-gyre circulation model, J. Phys. Oceanogr., 31, 1260–1286, 2001.; Charney, J. G. and Devore, J. G.: Multiple Flow Equilibria in the Atmosphere and Blocking., J. Atmos. Sci., 36, 1205–1216, 1979.; Chelton, D. and Xie, S.-P.: Coupled ocean-atmosphere interaction at oceanic mesoscales, Oceanography, 23, 52–69, doi:10.5670/oceanog.2010.05, 2010.; Chen, D., Liu, W. T., Tang, W., and Wang, Z.: Air-sea interaction at an oceanic front: Implications for frontogenesis and primary production, Geophys. Res. Lett., 30, 1745, doi:10.1029/2003GL017536, 2003.; Cheng, X. and Wallace, J. M.: Cluster Analysis of the Northern Hemisphere Wintertime 500-h{P}a Height Field: Spatial Patterns, J. Atmos. Sci., 50, 2674–2696, 2.0.CO;2>doi:10.1175/1520-0469(1993)050<2674:CAOTNH>2.0.CO;2, 1993.; Corti, S., Molteni, F., and Palmer, T. N.: Signature of recent climate change in frequencies of natural atmospheric circulation regimes, Nature, 398, 799–802, 1999.; Crommelin, D. T.: Regime Transitions and Heteroclinic Connections in a Barotropic Atmosphere., J. Atmos. Sci., 60, 229–246,

 

Click To View

Additional Books


  • Characteristic Scales of Earthquake Rupt... (by )
  • On the Possibility of Precursors of Eart... (by )
  • Classification of Probability Densities ... (by )
  • Coupling Between Reconnection and Kelvin... (by )
  • Diagnostics on the Cost-function in Vari... (by )
  • Functional Background of the Tsallis Ent... (by )
  • Scaling Properties of Planetary Calderas... (by )
  • Loading Rates in California Inferred fro... (by )
  • Mulifractal Phase Transitions: the Origi... (by )
  • The L1/2 Law and Multifractal Topography... (by )
  • Diagnostics of Solar Flare Reconnection ... (by )
  • Linear and Nonlinear Post-processing of ... (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.