This page is a permanent link to the reply below and its nested replies. See all post replies »
ElwoodBlues · M
Are glaciers shrinking? What does the photographic evidence say?
Muir Glacier, Alaska

Muir Glacier and Inlet, Alaska, 1880s and 2005

Carroll Glacier, Alaska, 1906 and 2004

Grinnell Glacier, Montana, 1926 and 2008

Bear Glacier from space 1980. 1989, 2011

Bear Glacier from the air 2002, 2007

Glacier shrinkage driving global changes in downstream systems
https://www.pnas.org/doi/10.1073/pnas.1619807114
Accelerated global glacier mass loss in the early twenty-first century
https://www.nature.com/articles/s41586-021-03436-z
Muir Glacier, Alaska

Muir Glacier and Inlet, Alaska, 1880s and 2005

Carroll Glacier, Alaska, 1906 and 2004

Grinnell Glacier, Montana, 1926 and 2008

Bear Glacier from space 1980. 1989, 2011

Bear Glacier from the air 2002, 2007

Glacier shrinkage driving global changes in downstream systems
https://www.pnas.org/doi/10.1073/pnas.1619807114
Accelerated global glacier mass loss in the early twenty-first century
https://www.nature.com/articles/s41586-021-03436-z
Using largely untapped satellite archives, we chart surface elevation changes at a high spatiotemporal resolution over all of Earth’s glaciers. We extensively validate our estimates against independent, high-precision measurements and present a globally complete and consistent estimate of glacier mass change. We show that during 2000–2019, glaciers lost a mass of 267 ± 16 gigatonnes per year, equivalent to 21 ± 3 per cent of the observed sea-level rise6. We identify a mass loss acceleration of 48 ± 16 gigatonnes per year per decade, explaining 6 to 19 per cent of the observed acceleration of sea-level rise.