Experiment: Spin-off Ensembles

Spin-off Ensembles

@Philip.Rupp @Oriol.Tinto

Experiment design:

• use event-generator to create global ensemble simulations
• from the event-generator ensemble, pick a member + date
• add perturbations to that model state
• run a spin-off ensemble from these perturbed states

gantt
    title Spin-off experiments
    dateFormat  YYYY-MM-DD
    section mother-member
    Chunk 1           :2019-12-25, 2020-01-01
    Chunk 2           :a1, 2020-01-01, 30d
    Chunk 3           :after a1  , 30d
    section mother-member-twin
    Rerun chunk 2       :b1, 2020-01-01  , 12d
    section spinoff
    Spinoff Member 1      :after b1  , 30d
    Spinoff Member 2      :after b1  , 30d
    Spinoff Member ...    :after b1  , 30d
        

Steps for spinoff:

• select mother-member from event-generator experiment
• verify that spinoff-start-date is within experiment dates of mother-member
• find first available restart file from mother-member preceding the spinoff-start-date
• calculate necessary rerun leadtime of mother-member
• rerun mother-member: mother-member-twin
• create restart file of mother-member-twin at spinoff-start-date
• create spinoff ensemble members
• run spinoff ensembles
• (repeat for all mother-member-spinoff-start-date combinations; see question)

QUESTION: Set up experiment such that a list of tuples (mother-member, spinoff-start-date) is provided? Or just provide a single tuple and then redo experiment for each spinoff separately?