| 1 | May 19, 2004 | last changed June 8, 2004 | 
| 2 |  |  | 
| 3 | Observation System Simulation Experiment | OBSERVATION SYSTEM SIMULATION EXPERIMENT | 
| 4 |  |  | 
| 5 | OSSE is a configuration to simulate running an deterministic | OSSE is an MITgcm configuration to simulate data assimilation with a | 
| 6 | ensemble Kalman filter on a rotating tank with an ice bucket | deterministic ensemble Kalman filter and a model of a rotating tank of | 
| 7 | at the center. | water with an ice bucket at the center. | 
| 8 |  |  | 
| 9 | code/ contains the modifications to MITgcm to run in cyclindrical | INSTALLATION | 
|  | coordinates.  At the time of this writing, it requires |  | 
|  | checkpoint48 to compile and run. |  | 
| 10 |  |  | 
| 11 | EnKF/ contains the source and data files to run the Kalman filter. | At the time of this writing, the OSSE requires MITgcm checkpoint48 to | 
| 12 |  | compile and run.  MITgcm can be obtained from | 
| 13 |  | <http://mitgcm.org/source_code.html>.  If downloading from the CVS | 
| 14 |  | server, use the command | 
| 15 |  |  | 
| 16 |  | cvs co -r 'checkpoint48' MITgcm | 
| 17 |  |  | 
| 18 |  | in order to specify the correct version.  Read the instructions on the | 
| 19 |  | the webpage before trying to use the CVS server. | 
| 20 |  |  | 
| 21 |  | The OSSE directory tree can be obtained from the MITgcm CVS repository | 
| 22 |  | with the command | 
| 23 |  |  | 
| 24 |  | cvs co MITgcm_contrib/osse | 
| 25 |  |  | 
| 26 |  | The code and its revision history can be browsed at | 
| 27 |  |  | 
| 28 |  | <http://dev.mitgcm.org/cgi-bin/viewcvs.cgi/MITgcm_contrib/osse/> | 
| 29 |  |  | 
| 30 |  | A good place to put the osse directory tree is in MITgcm/verification, | 
| 31 |  | where examples and test examples of MITgcm configurations are kept. | 
| 32 |  |  | 
| 33 |  | CONTENTS | 
| 34 |  |  | 
| 35 |  |  | 
| 36 |  |  | 
| 37 |  | code: modifications to MITgcm to run in cyclindrical coordinates.  At | 
| 38 |  | the time of this writing, it requires checkpoint48 to compile and run. | 
| 39 |  |  | 
| 40 |  | filter: source and data files to run the data assimilation and Kalman | 
| 41 |  | filter. | 
| 42 |  |  |