Re: UN climate panel ties some weather extremes to global warming
I believe they're using data from 1950 on, which would be close to 60 years.
"Warming has led to changes in climate extremes such as heat waves, record high temperatures and, in many regions, heavy precipitation since 1950, the U.N. climate panel warned in a report Wednesday."
I'm sure there are many indicators. From personal experience there are no longer glaciers where the maps show glaciers, their having retreated considerable distances quite rapidly.