Re: Models, fits, and wild guesses
I think the point is more that they don't have any working equipment in space. So until they build and launch a replacement, they have two options.
1. Do nothing, hope that there isn't a major problem
2. See if they can use other data to partially fill-in the gaps they have.
I don't think they are pretending that they will do major advances on the science here, more that they think they can still provide early warning for events.