Are Arctic-CORDEX data (hindcasts & scenario-based projections) available now at CDS?
Yes, they are available, see at https://cds.climate.copernicus.eu/cdsapp#!/dataset/projections-cordex-domains-single-levels
Do you know if sea ice output(s) [i.e., sic, sit] will be included in the Arctic-CORDEX product? It's a parameter not common to most other CORDEX spatial domains.
In standard RCMs (atmosphere+land), the ocean and sea ice cover or thickness is not computed by the RCMs but imposed from the driving GCMs. So this information is available from the GCM runs. In coupled RCMs where the ocean is explicitly represented at high resolution (this is the case for some of the Arctic CORDEX runs), then this variable could be made available.
