How do I do a UM Continuation Run?
Often when you set a model running, it only runs for a certain length of simulation time (say a year), and then halts - even when you've set the run length to be longer. This is to allow you to check everything is running OK, and in UM parlance is known as an initial or new run (NRUN).
Once done, you can now proceed with a continuation run (CRUN), and the model should now start from the end of the first run to completion. Instructions for submitting the continuation run can be found here. This page also contains information on setting up the initial run and resubmission period here.