Running the Reg CM 4 Model Dr Arlindo

Running the Reg. CM 4 Model Dr. Arlindo Meque ameque@sadc. int

STEPS FOR RUNNING THE MODEL 1. Create a Directory for running the model, e. g, regcm_run: sadc@csc-laptop 1: ~$ mkdir regcm_run 2. Go to the newly created directory: cd regcm_run/ 3. Create two directories: one for input and the other one for output: 4. Create a soft link : mkdir input output ln -s bin home/sadc/software/Reg. CM-4. 7. 0/bin/ 5. Edit the param list: 6. Create the DOMAIN file uisng terrain: . /bin/terrain README. namelist 7. check the two files created : the Domain file and the Landuse ls input/ 8. Have a quick look at the DOMAIN file content: sadc@csc-laptop 1: ~/regcm_run$. /bin/Gr. ADSNc. Plot input/SAF_DOMAIN 000. nc

9. Create the SST file . /bin/sst README. namelist 10. Create the Initial boundary conditions: . /bin/icbc README. namelist 11. Finally run the model: . /bin/regcm. MPI README. namelist

Projection Maps A map displays the 3 D Earth’s surface on a 2 -D plane. We create a map by projecting the spherical Earth on to : • A Plane (stereographic projection) • A cylinder (Mercator projection) • A cone (lambert projection) Where the cylinder and the cone can be ‘unrolled’ after the projection to give a flat map The three listed above are conformal, meaning that the angle between two intersecting curves on earth is equal to the angle between the same curves on the map

Examples of Map Projections