The Gulf Stream plays a significant role in maintaining the climate of the US East Coast and Western Europe. “We conclude with a high degree of confidence that Gulf Stream transport has indeed slowed by about 4% in the past 40 years.” The full study is Here
Even if OP meant global warming, they didn’t include evidence here because it’s pretty much implied. If you’re literate enough to read actual papers there are indeed people that work out the odds each event or disaster is unrelated to GW, and those odds are often tiny.