The FLEXPART environment
At ECMWF version 902 of FLEXPART is centrally installed on ecgb and on some internal Linux-based systems. On these systems Metview is configured to pick up automatically the FLEXPART location automatically via these env environment variables:
MV_FLEXPART_EXE_PATH: defines the FLEXPART executable
MV_FLEXPART_RESOURCES_PATH: specifies the directory containing the following files
MV_FLEXPART_SPECIES_PATH: specifies the directory containing the species
Hard-coded parameters
Some of the key most important FLEXPART parameters cannot specified as a run time option but are hard-coded in the source. The FLEXTRA installation at ECMWF uses the following set of hard-codes parameters:
| Description | Value | Parameter in source | Source file |
|---|---|---|---|
| Maximum number of grid points in E-W (input grid) | 721 | nxmax | par_mod.f90 |
| Maximum number of grid points in N-S (input grid) | 361 | nymax | par_mod.f90 |
| Maximum number of model levels (input grid) | 138 | par_mod.f90 | |
| Maximum number of species | 1 | maxspec | par_mod.f90 |
| Maximum number of particles | 2000000 | maxpart | par_mod.f90 |
| Maximum number of age classes | 1 | maxageclass | par_mod.f90 |
| Maximum number of receptor sites | 200 | maxreceptors | par_mod.f90 |
| Maximum number of output grid nests | 0 | maxnests | par_mod.f90 |
Compilation
compiler: gfortran
compilation options:
| Code Block |
|---|
-O2O3 -m64 -mcmodel=medium -fconvert=little-endian -frecord-marker=4 |
...