{"id":626794,"date":"2026-09-16T20:54:12","date_gmt":"2026-09-16T20:54:12","guid":{"rendered":"https:\/\/www.newsbeep.com\/ie\/626794\/"},"modified":"2026-09-16T20:54:12","modified_gmt":"2026-09-16T20:54:12","slug":"satellites-show-earth-lost-more-than-12-trillion-tons-of-ice-from-greenland-antarctica-in-47-years-2","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/ie\/626794\/","title":{"rendered":"Satellites show Earth lost more than 12 trillion tons of ice from Greenland, Antarctica in 47 years"},"content":{"rendered":"\n

By Seth BorensteinAP Science Writer\u00a0 <\/p>\n

Sept. 16, 2026 12 PM PT <\/p>\n

About 12.5 trillion tons of ice from glaciers in Greenland and Antarctica have melted since 1979, which is enough frozen water to stack ice 5 feet deep across the continental United States, according to a major scientific report.<\/p>\n

A warming Earth is accelerating the melting of the planet\u2019s two major ice sheets, with 83% of the melt coming not from hotter air, but from warmer waters eating away at the ice sheets from below and the sides. The cold water is flowing into the oceans, according to a study in Wednesday\u2019s journal Scientific Data<\/a>. That\u2019s bad news for future sea level rise, the study authors said.<\/p>\n

\u201cThe ice sheets are melting away fast,\u201d said study co-author Eric Rignot, an ice scientist at University of California, Irvine. \u201cWe are melting the polar regions, sea level is rising worldwide and will exacerbate the vulnerability of coastal regions.\u201d<\/p>\n

Huge numbers for ice melt, people flooded<\/p>\n

The numbers behind the melt are both mind-bogglingly huge and deceptively small.<\/p>\n

All that melted ice turned into nearly 3 quadrillion gallons of water, which pushed global sea levels up about an inch since 1979, on top of other climate factors raising ocean heights, the report said.<\/p>\n

An inch may not sound like much, but for every third of an inch of sea level rise, another 2 to 3 million people get flooded at least once a year, said lead study author Ines Otosaka, an ice scientist at Northumbria University in England. <\/p>\n

The Jakobshavn glacier<\/a> in Greenland is now retreating up to 164 feet a day, Otosaka said.<\/p>\n

The international collaboration of polar scientists<\/a>, headed by the European Space Agency, had in the past only looked at ice sheet melt since the 1990s based on European satellite data. But by incorporating NASA satellites, the scientists were able to chart ice sheet volumes in Antarctica back to 1979 and in Greenland back to 1972.<\/p>\n

The melting is accelerating<\/p>\n

\u201cThere is a clear trend that the ice sheets are losing more mass and it has been increasing from decade to decade, especially if you look at the ice being discharged to the ocean,\u201d Otosaka said. \u201cAnd that\u2019s quite clear that there\u2019s a link to climate change.\u201d<\/p>\n

It showed that in the 1970s, 1980s and into the 1990s, the ice sheets were relatively stable, but then melt started happening and it really kicked in during the 2010s, Otosaka said.<\/p>\n

\u201cThat\u2019s something to be concerned about as it shows that the changes are tracking decades behind global warming, which means we can expect them to continue for decades more \u2014 even if we are able to stop heating the planet,\u201d said study co-author Andrew Shepherd, also of Northumbria.<\/p>\n

The accelerating numbers seemed to pause from 2020 to 2023, but the study\u2019s authors said it more reflected short-term weather variations not long-term trends. Otosaka said the study stopped with 2023 data, but she\u2019s looked at measurements since and found the accelerating trend has picked back up.<\/p>\n

A lot of the stability in Antarctica was because East Antarctica had record snowfall, which compensated for the rapid melting in the less stable West Antarctic Ice Sheet, the authors said.<\/p>\n

The three-year hiatus was \u201cjust a bump in the record,\u201d Rignot said. \u201cThe long rise is climate and the threat is crystal clear.\u201d<\/p>\n

Worrying about a collapse scenario<\/p>\n

The biggest changes scientists saw are in what they call dynamic processes, which are more abrupt and active than the slow steady melting from the air, and that\u2019s something prone to trigger runaway \u201ctipping points,\u201d Otosaka said.<\/p>\n

New York University ice scientist David Holland said that\u2019s what concerns him \u201cbecause most of the ice loss is dynamical and that is exactly what you would expect in an ice sheet instability collapse scenario.\u201d<\/p>\n

The international team used 45 independent surveys and 27 different satellites. \u201cThe use of relatively independent methods gives me greater confidence in the result,\u201d said Holland, who wasn\u2019t part of the study. \u201cThe upward trend is real.\u201d<\/p>\n

\u201cThe \u2018wild cards\u2019 of Antarctic mass loss continue to pose a challenge for human management of the planet \u2014 a clear and present danger, but many decades in the future,\u201d said University of Colorado ice scientist Ted Scambos, who wasn\u2019t part of the study. \u201cWe are now as a society smart enough to know the future, but not prudent enough to act upon the knowledge.\u201d<\/p>\n

Borenstein writes for the Associated Press. <\/p>\n","protected":false},"excerpt":{"rendered":"By Seth BorensteinAP Science Writer\u00a0 Sept. 16, 2026 12 PM PT About 12.5 trillion tons of ice from…\n","protected":false},"author":2,"featured_media":626795,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[17221,2711,266144,3024,1877,266145,61,60,266142,14733,266143,266147,82,2713,128822,266146,430,742],"class_list":["post-626794","post","type-post","status-publish","format-standard","has-post-thumbnail","category-science","tag-antarctica","tag-decade","tag-future-sea-level-rise","tag-greenland","tag-ice","tag-ice-scientist","tag-ie","tag-ireland","tag-major-ice-sheet","tag-ocean","tag-otosaka","tag-record-snowfall","tag-science","tag-study","tag-study-author","tag-ton","tag-university","tag-year"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/posts\/626794","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/comments?post=626794"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/posts\/626794\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/media\/626795"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/media?parent=626794"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/categories?post=626794"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/tags?post=626794"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}