source:eccodes_handler.F90

EcCodes subroutines produce error messages. Catching them is optional, but if no variable is provided to them to initialize with the error message, the subroutines crash and put out the error anyway. Where they put them is not intuitive in parallel computing. So, this sections catches them and refers them to an output specified by w_unit, a variable passed onto eccodes_handler by model1 via read_grib1. In case of no error, this subroutine does nothing when called.