Sean Gadd - For 1953 to 1989 was 1.4 percent, while the loss rate for 1989 to 2007 was 2.5 percent.58 of the ice cover still present in 2000, almost 40 percent had disappeared by 2011.61:425 ice climber will gadd noticed differences between his 2014 and 2020 climbs.62 the glaciers are thinning in addition to.