Ocean Circulation and Climate Dynamics

ORCA025

Global Ocean at 1/4°

Surface Speed in ORCA025. Inlay shows zoomed region of the North Sea and the western part of the Baltic Sea to illustrate the model grid box size..

The 1/4° configuration ORCA025 is a case partially resolving mesoscale eddies (in particular, at low latitudes). At high latitudes, an eddy mixing parameterization is often used. Compared to ORCA05, general improvements are a refined western boundary structure by maintaining a computational efficiency. This compromise makes ORCA025 the current working. It is also increasingly used as base model for the nested configurations (e.g. VIKING20, INALT20).

Person in charge: Klaus Getzlaff

Characteristics

  • NEMO ocean
  • LIM2 sea ice (viscous-plastic rheology)
  • Tripolar ORCA grid
  • Grid Points: 1442 x 1021 x 46
  • Nominal Grid Point Distance: Eq: ~28 km; 60°N: ~15 km
  • Time Step: 2016s
  • Eventually Gent and McWilliams parameterization for eddy mixing
Minimum horizontal grid point distance (km) in ORCA025.

Simulations

Typical simulations are:

  • Control run (climatological forcing)
  • Hindcast run (interannual forcing, last 60 years)
  • Several sensitivity runs (e.g. to single components of the atmospheric forcing or parameter settings)

HPC: 

Simulations and numerical experiments with this configuration are mostly done using high performance computing facilities at the University CAU in Kiel and HLRN.

Data

Data is available only internally. For data requests from outside GEOMAR, please contact the Model and Data Management (see right column).

Publications

Jump to: 2015 | 2013 | 2012 | 2011 | 2010 | 2008
Number of items: 14.

2015

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Rieck, J. K., Böning, C. W., Greatbatch, R. J. and Scheinert, M. (2015) Seasonal variability of eddy kinetic energy in a global high-resolution ocean model Geophysical Research Letters, 42 (21). pp. 9379-9386. DOI 10.1002/2015GL066152.

2013

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Behrens, E., Biastoch, A. and Böning, C. W. (2013) Spurious AMOC trends in global ocean sea-ice models related to subarctic freshwater forcing Ocean Modelling, 69 . pp. 39-49. DOI 10.1016/j.ocemod.2013.05.004.

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Fischer, M., Biastoch, A., Behrens, E. and Baehr, J. (2013) Simulations of a Line W-based observing system for the Atlantic meridional overturning circulation Ocean Dynamics, 63 (8). pp. 865-880. DOI 10.1007/s10236-013-0632-2.

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Ruehs, S., Durgadoo, J. V., Behrens, E. and Biastoch, A. (2013) Advective timescales and pathways of Agulhas leakage Geophysical Research Letters, 40 (15). pp. 3997-4000. DOI 10.1002/grl.50782.

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Ummenhofer, C. C., Schwarzkopf, F. U., Meyers, G., Behrens, E., Biastoch, A. and Böning, C. W. (2013) Pacific Ocean Contribution to the Asymmetry in Eastern Indian Ocean Variability Journal of Climate, 26 . pp. 1152-1171. DOI 10.1175/JCLI-D-11-00673.1.

2012

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Behrens, E., Schwarzkopf, F. U., Lübbecke, J. F. and Böning, C. W. (2012) Model simulations on the long-term dispersal of137Cs released into the Pacific Ocean off Fukushima Environmental Research Letters, 7 (3). 034004. DOI 10.1088/1748-9326/7/3/034004.

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Gary, S. F., Lozier, M., Biastoch, A. and Böning, C. W. (2012) Reconciling tracer and float observations of the export pathways of Labrador Sea Water Geophysical Research Letters, 39 (24). L24606. DOI 10.1029/2012GL053978.

2011

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Feng, M., Böning, C. W., Biastoch, A., Behrens, E., Weller, E. and Masumoto, Y. (2011) The reversal of the multi-decadal trends of the equatorial Pacific easterly winds, and the Indonesian Throughflow and Leeuwin Current transports Geophysical Research Letters, 38 . L11604. DOI 10.1029/2011GL047291.

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Gary, S. F., Lozier, S. M., Böning, C. W. and Biastoch, A. (2011) Deciphering the pathways for the deep limb of the Meridional Overturning Circulation Deep-Sea Research Part II-Topical Studies in Oceanography, 58 (17-18). pp. 1781-1797. DOI 10.1016/j.dsr2.2010.10.059.

2010

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Rattan, S., Myers, P. G., Treguier, A. M., Theetten, S., Biastoch, A. and Böning, C. W. (2010) Towards an understanding of Labrador Sea salinity drift in eddy-permitting simulations Ocean Modelling, 35 (1-2). pp. 77-88. DOI 10.1016/j.ocemod.2010.06.007.

2008

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Durgadoo, J. V., Lutjeharms, J. R. E. and Biastoch, A. (2008) The Conrad Rise as an obstruction to the Antarctic Circumpolar Current Geophysical Research Letters, 35 (20). L20606. DOI 10.1029/2008GL035382.

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Feng, M., Biastoch, A., Böning, C. W., Caputi, N. and Meyers, G. (2008) Seasonal and interannual variations of upper ocean heat balance off the west coast of Australia Journal of Geophysical Research - Oceans, 113 . C12025. DOI 10.1029/2008JC004908.

This list was generated on Tue May 23 12:33:23 2017 CEST.

Models

Global


Global + Nest

 


Regional
Process-oriented

Model and Data Management

For general questions about the model configurations and data access, please contact:

Dr. Markus Scheinert
West Shore Building
Room 427
Phone: 0431 600-4014
email: mscheinert(at)geomar.de

Dr. Klaus Getzlaff
West Shore - Alte Botanik
Room 51
Phone: 0431 600-4179
email: kgetzlaff(at)geomar.de