What I can add is that I represented Canada as a volunteer with the Intergovernmental Panel on Climate Change for 20 years, trying to answer these science questions. We found it very hard. They're excellent questions. They're important questions, but they're hard to answer.
The part that we answered with more rigour is that emissions cause warming. We've quantified that. Emissions cause more precipitation. Emissions also cause other storms. That's just hard to quantify.