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BOM 5.0 ALPHA4:
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BOM 5.0 ALPHA3:
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BOM 5.0 ALPHA2:
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BOM 4.1:
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userguide:
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Previous versions:
BOM 3.2:
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source code
userguide:
PS
2002-05-28: BOM 3.0 will be released in the autumn
In recent idealized model studies it has been discovered that it may be advantagous to use a predictor-corrector type time-stepping for the barotropic part of the code, instead of the forward-backward scheme currently used. A major benefit of the new approach is that it allows runs with far less horisontal viscosity when the horisontal resolution is high. A new version of BOM will be released in the autumn.Great new animations by Inge Eliassen
AVI OpenGL animations from simulations around the Ormen Lange Oilfield, follow direct link in heading or see the applications page.2001-02-01 BOM 2.0 is out
Version 2.0 is on the net. Some of the new features:- The Coriolis term averaging described in Espelid et al. (2000) is introduced to avoid instabilities that may or will occur when applying 1/4-weights for these terms.
- The superbee-limiter method is also used for advection of momentum. One may select the POM-form on the viscosity terms by setting a logical.
- One may choose between the UNESCO-formulation as given in Gill or the simplified equation of state found in Wang (1984)
- A number of routines have been made more efficient on shared memory parallel computers by introducing OpenMP directives and rewriting loops. Some routines are made more efficient by introducing arrays that enable looping over wet points only. The work on parallelization and improving the efficiency has been done by Helge Avlesen, Parallab, University of Bergen.
2000-10-12: First annual meeting in numerical ocean modeling, Hell
The first annual meeting in numerical ocean modeling in Norway will be held 9-10 January 2001 at Rica Hell Hotell, Stjørdal.2000-03-22: Improved the inclusion of wind
Experiments with very strong winds (up to 31 m/s) has showed that it is necessary to include the effects of surface stress in the 2-D equations. So the effects ofWUSURF, WVSURF, WUBOT and
WVBOT are included in the equations for UA
and VA. This had only minor effects on the results for
the Osteroy case, since these cases are not driven by winds.
2000-02-24: Important correction to Main.f90
Yngve Heggelund found the statement ETA = ETAP in
Main.f90. This is obviously uncorrect. The correct statement is:
ETAP = ETA which is now placed in version 1.1 of BOM and
the user guide with results from BOM is now updated accordingly. The
Flow of water with the tide in and out is now running much more
credibly. Previos problems at the open boundaries with the modesplit
BOM reported by Eliassen and Avlesen were probably due to this
error. In the Saltstraumen studies by Eliassen and Heggelund the
correct statement ETAP = ETA was used, but the bug must
have been introduced sometime after the spring of 1999. Please check
in your code that you have ETAP = ETA in Main.f90
