#wais — Public Fediverse posts

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6. Mourning the Melting Ice Humanity’s relationship with the ice has shifted from the terror of the "Heroic Age" to active mourning as climate change causes the continent to erode. The potential collapse of the West Antarctic Ice Sheet (WAIS) could lead to a global sea-level rise of 3-4 meters.

Based on the book The Antarctic: A Very Short Introduction by Klaus Dodds from the Oxford University Press VSI series (2012)

https://youtu.be/2DSZZNaUTWU

#video
#Antarctica
#VSI
#books
#WAIS

@juliusgoat.bsky.social hey you can't take it like that! #wais

Some of you probably remember WAIS. An Internet search engine from the Gopher era (more specific: a search protocol). TIL: Thinking Machines (those with the massive red blinkenlights servers) were the main driver and developer of WAIS: https://en.wikipedia.org/wiki/Wide_area_information_server #vintagecomputing #techhistory #wais #thinkingmachines #connectionmachine

@nixCraft

Efficiency & accessibility.

You'd anonymously visit a site (whether web, #Gopher, #WAIS, FTP), get just the raw content and could read it perfectly fine over a 1200 baud dial-up modem on a 286 running DOS.

Nowadays you need a web-browser that consumes GB of RAM when idle, a multi-core CPU clocked at GHz speeds, connected via an always-on 5G or fiber connection, and you get umptybajillion privacy-invading adverts and auto-playing videos in the process distracting you from the content you're trying to obtain.

Is it prettier? Maybe

Is it better? Hardly

Thwaites Glacier won’t collapse like dominoes as feared, study finds, but that doesn’t mean the ‘Doomsday Glacier’ is stable
https://theconversation.com/thwaites-glacier-wont-collapse-like-dominoes-as-feared-study-finds-but-that-doesnt-mean-the-doomsday-glacier-is-stable-236480 via @TheConversationClimate

#Antarctica #Ice #SeaLevel #Thwaites #DoomsdayGlacier #AntarcticIceSheet #WAIS 🇦🇶🧊🌊

" Also, we find that rate-induced effects tend to allow a stabilization of the #AMOC in cases where the peak of the West Antarctica Ice Sheet meltwater flux occurs before the peak of the Greenland Ice Sheet meltwater flux."

Ah great. So we should pray for the #WAIS reaching its tipping point before #Greenland 's ice shield melts down to its point of no return? 😁
https://esd.copernicus.org/articles/15/859/2024/esd-15-859-2024.html Sacha #Sinet et al, 2024

It's not what they mean, I know. What I actually wanted to highlight is the circumstance that AMOC is also sensitive to the rate or speed in which freshwater is added, not only to the final amount of it. And this was also found in their study.

I first came across it in a 2021 paper by #Lohmann #Ditlevsen "Abrupt climate change as a rate-dependent cascading tipping point" https://esd.copernicus.org/articles/12/819/2021/esd-12-819-2021.html ,
Peter Ditlevsen being the brother in the sibling duo who in 2023 found a cool way to analyse noisy data in search for impending tipping behaviour and said, AMOC tips 2025-2097.

Octopus DNA Reveals Clues to When the West Antarctic Ice Sheet Last Collapsed

https://www.smithsonianmag.com/smart-news/octopus-dna-reveals-clues-to-when-the-west-antarctic-ice-sheet-last-collapsed-180983507

#SmithsonianMagazine #Octopus #DNA #WAIS #ClimateChange

Genomic evidence for West Antarctic Ice Sheet collapse during the Last Interglacial | Science

https://www.science.org/doi/10.1126/science.ade0664

#sealevelrise #slr #antarctica #wais

The very talented Ines Otosaka is presenting the #IMBIE project that estimates the mass change of #iceSheets and contribution to #SeaLevelRise
#ESSI
The 3rd IMBIE is in the pipeline now and it's going to be enormous...

#Greenland has contributed about 15mm since 1972, #antarctica a bit less, where there is higher uncertainty but most of it is from #WAIS

Goodbye, Amsterdam

"Accelerated ice melt in west #Antarctica is inevitable for the rest of the century no matter how much carbon #emissions are cut, research indicates. The implications for #SeaLevelRise are “dire”, scientists say, and mean some coastal cities may have to be abandoned.

The ice sheet of west Antarctica would push up the oceans by 5 metres if lost completely."

#WAIS
https://www.theguardian.com/environment/2023/oct/23/rapid-ice-melt-in-west-antarctica-now-inevitable-research-shows

Une étude parue dans la revue #NatureClimateChange confirme que la fonte de l'inlandsis de l'#Antarctique occidental #WAIS semble irréversible. Avec les commentaires de Gaël Durand, directeur de recherche à l'Institut des géosciences de l'environnement (IGE) de Grenoble.

https://www.francebleu.fr/infos/environnement/rechauffement-climatique-la-fonte-des-glaces-de-l-antarctique-est-desormais-irreversible-selon-une-etude-8078750

Latest study on warming oceans affecting ice shelf melting increasing instability of ice sheet: Unavoidable future increase in West Antarctic ice-shelf melting over the twenty-first century (Naughten et Al 23 Oct 2023)

“results suggest that mitigation of greenhouse gases now has limited power to prevent ocean warming that could lead to the collapse of the West Antarctic Ice Sheet.”

#SeaLevelRise #Antarctica #WAIS #AmundsenSea #ClimateCrisis
https://www.nature.com/articles/s41558-023-01818-x

@mazzeri well done! I agree, you are being conservative in your estimate. With multiple tipping points of major oceanic-atmospheric systems already crossed by now e.g. #GIS, #WAIS, #Amazon, #AMOC, #CoralReefs, it is clear that "the sky's the limit" in terms of impending climate destruction an human-caused destruction of our planet. Which says nothing about #habitat and #biodiversity loss. Or #ocean #acidification. Or, or, or ... The best guess is that the #AMOC will have completely broken down ca. 2050, quite possibly sooner. We are already in uncharted territory now, so to talk about future uncharted territory ... it beggars belief, especially as so much of this destruction has already been programmed by humans into #Earth systems #EarthSystems ... thoroughly enervating.

A thorough overview of the ideas behind #WAIS collapse from the late and much missed #DavidVaughan who sadly died last week.
Appropriate given latest work on #ThwaitesGlacier which David was also UK #Science lead on

"West #Antarctic Ice Sheet Collapse, the fall and rise of a paradigm"

#Antarctica

Cc @kim

https://link.springer.com/article/10.1007/s10584-008-9448-3#ref-CR28

I (re)discovered the World Wide Web!

And, even better news, it's similar to WAIS!

https://web.archive.org/web/19970614065614/http://www.lysator.liu.se/etexts/iguide/chap8.www.html

#waybackmachine #www #cern #bigdummy #wais #throwbackfriday

The octopus sex scandal that rocked the Antarctic, 125.000 years ago....

#Cartoon #Antarctica #WestAntarcticIceSheet #WAIS #SeaLevelRise #ClimateCrisis
https://www.theguardian.com/commentisfree/2023/feb/06/exclusive-the-octopus-sex-scandal-that-rocked-the-antarctic

Very cool, innovative, interdisciplinary research, resulting in a stark warning.

"The authors of the #octopus research say their findings suggest that even under global heating of 1.5C – the most ambitious goal under the global Paris #climate agreement – the West Antarctic Ice Sheet could be consigned to collapse."

#WAIS #SeaLevelRise
https://www.theguardian.com/world/2023/feb/05/clue-to-rising-sea-levels-lies-in-dna-of-4m-year-old-octopus-scientists-say

Hidden within an Antarctic octopus genetics and DNA is a story of West Antarctic Ice Sheet collapse at global temperatures similar to today, about 125,000 years ago during the Interglacial period.

"scientists say they detected clear signs that, about 125,000 years ago, some octopus populations on opposite sides of the West Antarctic Ice Sheet had mixed together, with the only likely route being a seaway between the south Weddell Sea and the Ross Sea."

“That could only have happened if the ice sheet had completely collapsed,” said Dr Sally Lau, a geneticist at James Cook University.

#Antarctica #WestAntarcticIceSheet #WAIS #SeaLevelRise #ClimateCrisis
https://www.theguardian.com/world/2023/feb/05/clue-to-rising-sea-levels-lies-in-dna-of-4m-year-old-octopus-scientists-say

@dborch An #ISDN, #WAIS und #Gopher kann ich mich erinnern, aber #Eudora musste ich nachschlagen: https://de.wikipedia.org/wiki/Eudora_(Software)

Climate System teleconnection ... climate tipping elements linked with the potential predictability of cascading tipping dynamics. It seems what happens in the Amazon (Deforestation), doesn't stay in the Amazon.

Teng Liu et al, Teleconnections among tipping elements in the Earth system, Nature Climate Change (2023). (OpenAccess) https://www.nature.com/articles/s41558-022-01558-4

#ClimateSystem #TippingPoints #ClimateChange #Amazon #Deforestation #Tibet #Antactica #WestAntarcticIceSheet #WAIS #TibetanPlateau #ClimateCrisis

Realizing after I posted this that it is now a Moral Imperative for me to add hyperlinking for all #IETF #RFC1738 URI schemes to #Mastodon, especially news and nntp. If they won’t accept my pull request this is worth a fork.
#FTP #Gopher #Usenet #NNTP #telnet #WAIS #Prospero (hell yeah, Prospero https://www.rfc-editor.org/rfc/rfc4157)