Desert cold habitat in the enclosure will fit to a Snow leopard, but certainly not tropical design. The San Diego zoo has snow leopards and is located in a desert (or semi-desert) area near ocean.
Maybe if just Miami zoo keeps snow leopard that would be the only case of snow leopard kept in a truly tropical region, since the South of Florida is classified as tropical.
Zoo Miami does NOT keep snow leopard. Big Cat Rescue in Tampa, Florida used to keep two (which have both now died). Exotic Feline Breeding Compound is in the desert and they have a pair. Rio Grande Zoo in Albuquerque is in the high desert (so not as hot as other deserts) and they have a breeding pair. Los Angeles Zoo and San Diego Zoo (already mentioned) have them, they are semi-desert.