Presence of ice

### What problem does your feature request solve?

This could be useful for determining how ice at the surface changes between models.

### Describe the solution you'd like

A recipe, maybe an operator. This should live in `Winter Weather`.

For further details (including about reviewers) please refer to #1550.

### Describe alternatives you've considered

Temperature at surface
Precipitation amount (over same time period as temperature at surface)

Start by reading issue #1550 and the existing Winter Weather recipes or operators to understand the requested approach. Determine how surface ice presence should be represented and how it should be evaluated between models; done means a documented, tested recipe or operator that supports this comparison.

Written by the indexing model from the issue text.