Add climatology in README

README.md

@@ -40,6 +40,7 @@ We establish two tasks: full and sparse dynamics prediction.
   ./process.sh ncep            # For simulation from NCEP
   ./process.sh cma             # For simulation from CMA
   ./process.sh ecmwf           # For simulation from ECMWF
+  ./process.sh climatology     # For climatology
   ```
 
 ## Dataset Overview