>>13620661The original estimates of the timing of glacier melt were based on two things: modeled projections of the glaciers’ response to warming, and direct observations of glacial retreat. A 2003 report was based on modeling a scenario of doubling pre-industrial atmospheric CO2 levels by 2030, which would have melted the park’s major glaciers – and presumably the minor ones, too – by 2030.
After publication of that report, field observations showed glacier melt to be years ahead of the projections, causing scientists in 2010 to revise their “end date” to 2020.
This 2020 date was then put on signs in the park, educating visitors about the observations of rapid ice loss resulting from global warming.
>>13620664I don't care about your spirit of conversation
