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Global glacier mass change in 2025

Michael Zemp·Ethan Z. Welty·Samuel U. Nussbaumer·Jacqueline Bannwart·Isabelle Gärtner-Roer·Albin Wells·Andreas Peter Ahlstrøm·Brian Anderson·Liss Marie Andreassen·Mohd. Farooq Azam·Jamie Barnett·Carlo Baroni·Nicholas Edward Barrand·Andreas Bauder·Eric Bernard·Etienne Berthier·Giulia Bertolotti·Tobias Bolch·Mylène Bonnefoy-Demongeot·Matthias H. Braun·David Burgess·David Cappelletti·Jonathan L. Carrivick·Luca Carturan·Daniele Cat Berro·Jorge Luis Ceballos·Guillermo Cobos·Rolando Cruz·Nicolas Cullen·Bolívar Cáceres·Johanna Dahlkvist·Otgonbayar Demberel·Simon de Villiers·Roberto Dinale·Eugene Drozdov·Inés Dussaillant·Luzmila Dávila·Nelly Elagina·Hallgeir Elvehøy·Alexander Erofeev·Daniel Falaschi·Andrea Fischer·Mauro Fischer·Caitlyn Florentine·Koji Fujita·Stephan Peter Galos·Ayon Garcia·Noel Gourmelen·Federico Grosso·Afanasiy Gubanov·Andri Gunnarsson·Anne Guyez·Lea Hartl·Martin Hoelzle·Jorge Huenante·Romain Hugonnet·Matthias Huss·Bernhard Hynek·Takuro Imazu·Rodolfo Iturraspe·Livia Jakob·Sharad Joshi·Neamat Karimi·Nina Kirchner·Bjarne Kjøllmoen·Jack Kohler·Stanislav Kutuzov·Ivan Lavrentiev·James Matthew Lea·Amerigo Lendvai·Huilin Li·Shenghai Li·Zhongqin Li·Andreas Linsbauer·Sebastián Marinsek·Enrico Mattea·Christoph Mayer·Christopher McNeil·Luca Mercalli·Alexandra Messerli·Carolyn Michael·Umberto Morra di Cella·Francisco Navarro·Hofiz Navruzshoev·Anton Neureiter·Gennady Nosenko·Massimo Pecci·Mauri Pelto·Victor Popovnin·Rainer Prinz·Carla Puigdomenech·Heather Purdie·Finnur Pálsson·Alberto Rossotto·Lucas Ruiz·Louis Sass·Erik Schytt Mannerfelt·Riccardo Scotti·Donghui Shangguan·Brenda Shepherd
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Abstract

Glaciers lost 408 ± 132 Gt of mass during the hydrological year 2025, equivalent to 1.1 ± 0.4 mm sea-level rise. Since 1975, glacier mass loss has totalled 9,583 ± 1,211 Gt, equivalent to 26.4 ± 3.3 mm of sea-level rise, with six of the highest mass-loss years on record occurring in the past seven years.

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Michael Zemp, Ethan Z. Welty, Samuel U. Nussbaumer, Jacqueline Bannwart, Isabelle Gärtner-Roer, Albin Wells, Andreas Peter Ahlstrøm, Brian Anderson, Liss Marie Andreassen, Mohd. Farooq Azam, Jamie Barnett, Carlo Baroni, Nicholas Edward Barrand, Andreas Bauder, Eric Bernard, Etienne Berthier, Giulia Bertolotti, Tobias Bolch, Mylène Bonnefoy-Demongeot, Matthias H. Braun, David Burgess, David Cappelletti, Jonathan L. Carrivick, Luca Carturan, Daniele Cat Berro, Jorge Luis Ceballos, Guillermo Cobos, Rolando Cruz, Nicolas Cullen, Bolívar Cáceres, Johanna Dahlkvist, Otgonbayar Demberel, Simon de Villiers, Roberto Dinale, Eugene Drozdov, Inés Dussaillant, Luzmila Dávila, Nelly Elagina, Hallgeir Elvehøy, Alexander Erofeev, Daniel Falaschi, Andrea Fischer, Mauro Fischer, Caitlyn Florentine, Koji Fujita, Stephan Peter Galos, Ayon Garcia, Noel Gourmelen, Federico Grosso, Afanasiy Gubanov, Andri Gunnarsson, Anne Guyez, Lea Hartl, Martin Hoelzle, Jorge Huenante, Romain Hugonnet, Matthias Huss, Bernhard Hynek, Takuro Imazu, Rodolfo Iturraspe, Livia Jakob, Sharad Joshi, Neamat Karimi, Nina Kirchner, Bjarne Kjøllmoen, Jack Kohler, Stanislav Kutuzov, Ivan Lavrentiev, James Matthew Lea, Amerigo Lendvai, Huilin Li, Shenghai Li, Zhongqin Li, Andreas Linsbauer, Sebastián Marinsek, Enrico Mattea, Christoph Mayer, Christopher McNeil, Luca Mercalli, Alexandra Messerli, Carolyn Michael, Umberto Morra di Cella, Francisco Navarro, Hofiz Navruzshoev, Anton Neureiter, Gennady Nosenko, Massimo Pecci, Mauri Pelto, Victor Popovnin, Rainer Prinz, Carla Puigdomenech, Heather Purdie, Finnur Pálsson, Alberto Rossotto, Lucas Ruiz, Louis Sass, Erik Schytt Mannerfelt, Riccardo Scotti, Donghui Shangguan, Brenda Shepherd. 2026-04-07. Global glacier mass change in 2025. https://doi.org/10.1038/s43017-026-00777-z

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