NY - Is moving to a new place an option? It seems like the entire situation (snow, noise from above, trash, smells, condo management and snow removal, etc.) is making you pretty unhappy, and I fear there's only so much you can do from inside your unit.

For the unit above you, you might want to look into noise ordinances (and condo rules) to see if there's anything that's required. If there is, find the owner through the management company or tax records or property records and send them a letter. Otherwise, the new tenant will probably just find a note when they move in. As far as your floor, I wonder whether there is a natural equivalent of a padded laminate. That would probably insulate from noise fairly well.