All of us grapegrowers are noticing changes in the climate--we see it right on our grapevines.
France was just devastated by a vicious 1-2 punch: It was 90F there recently (too warm, too early) and the grapevines were budding out in response, and then a severe freeze (down to 22F, too cold, too late) hit the vines. That sudden chill killed the new growth, despite heroic efforts to light smudgepots in entire vineyards. This affected all the major French wine regions. It will lower grape production by as much as half.