| | 100 | * The information on the length of the simulation which has always been used in the run.def is insufficient to ensure that the driver and ORCHIDEE run over the same period. In order to solve this the run.def now needs to include a start and an end date for the simulation. The two keywords are (The dates provided need to be in the ISO format and be exact (include hour, minutes and seconds).) : |
| | 101 | - START_DATE = 1990-01-01 0:0:0 |
| | 102 | - END_DATE = 1990-03-01 0:0:0 |
| | 103 | |
| | 104 | |
| | 105 | * The time step is not any more provided as a decomposition of forcing time step but rather in actual seconds to be used (driver2oasis.f90 takes care of doing the right temporal interpolation) : |
| | 106 | - TIME_STEP = 900 |
| | 107 | |
| | 108 | * In the same way, the distribution of the average rainfall provided by the forcing over the finer time stepping of the model is given in seconds : |
| | 109 | - SPRED_PREC_SEC = 3600 |
| | 110 | |
| | 111 | * As the time interval to be simulated the more than one forcing file might be needed. Thus the option which names the forcing file accepts a list of files : |
| | 112 | - FORCING_FILE = WFDEI_CRU_2008.nc WFDEI_CRU_2009.nc |
| | 113 | |
| | 114 | * The description of the region over which to run has been simplified as well (this is only read by the driver2oasis.f90 in the initialisation pahse (when run with the -init option) as after this step all this information is in the grid file) : |
| | 115 | - WEST_EAST = -19.3, 62.3 |
| | 116 | - SOUTH_NORTH = -6.3, 62.3 |
| | 117 | |
| | 118 | * A file containing the grid description is needed to ensure that the driver and the model use the same geographical domain : |
| | 119 | - GRID_FILE = EuroMed_grid.nc |
| | 120 | |
| | 122 | |
| | 123 | The grid file is generated by the driver2oasis or by the atmospheric model. In the case of an off-line simulation this file is generated in an initialisation call (driver2oasis -init) based on the forcing file. The program will read the forcing file, compute the land/ocean mask and other ancillary information. We will ensure that orchideeoasis.f90 (the main program for ORCHIDEE) will be able to read also grid description files of all atmospheric models it is coupled to. WRF will be the first case implemented. |
| | 124 | |
| | 125 | This file needs to provide the following information to ORCHIDEE : |
| | 126 | * Longitude of all points |
| | 127 | * Latitude of all points |
| | 128 | * land/sea mask (1 over land O over oceans) |
| | 129 | * area of each grid box |
| | 130 | * corners in lon and lat of the corners of the grid box |
| | 131 | * Index of land point in the global grid |
| | 132 | * neighbours |
| | 133 | * ... |
| | 134 | |
| | 135 | As more models are integrated in the coupling model the information to be provided by the grid file will be refined. |
| | 136 | |
