Aggregation of case studies/models - groupings

[jwarner8]

What problem does your feature request solve?

May be superseeded by other more specific issues, but capturing here that when we are able to aggregate over a number of case studies, there are a variety of ways to do this. This includes as a function of forecast lead-time, time of day (diurnal cycle), and as a longer timeseries (validity time - though there might be some overlap if a forecast runs every 24 hours but runs out to 48h).
Also capturing thoughts around quantifying uncertainty/spread (done in the RES through confidence bars) - this is more of a nice to have than specific requirement for now.