Re: I don't mine a skeptic. I prefer a skeptic in this position
"Personally I can chip that a lake I hike to every so often had a glacier all the way down to the shore in the summer. A glacier, not just snowpack. 20 years later, that glacier never reaches it anymore."
this deserves separate commentary.
2040: cold <--- your glacier should reappear by then
also consider that some effects are 90 degrees out of phase with this cycle, quite possibly your glacier being one of them. The reason is 'heat up rate' vs temperature. Yeah, it's a calculus thing. It's also why late summer is hotter than early summer, even though days are longer in early summer.
Anyone else have a better explanation? Mine's based on recorded temperature data in the northern hemisphere... and one projected estimate based on the apparent cyclic trend