#paleoclimate — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #paleoclimate, aggregated by home.social.
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https://www.europesays.com/ie/672986/ Ancient DNA Rewrites Story of Enigmatic ‘American Cheetah’ #Acinonyx #AcinonyxJubatus #aDNA #AmericanAntelope #AmericanCheetah #Canada #cat #cheetah #climate #ClimateChange #ConvergentEvolution #diet #DNA #Éire #Evolution #Felidae #fossil #Gene #Genome #IberianLynx #IE #Ireland #lynx #LynxPardinus #Miracinonyx #MiracinonyxTrumani #NorthAmerica #paleoclimate #Pleistocene #Pronghorn #puma #PumaConcolor #Science #UnitedStates #Wyoming #yukon
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Fossils from Chinese Cave Fill Crucial Gap in History of Gigantopithecus blacki
Deep inside a limestone cave in southern China, paleontologists have uncovered an assemblage of thirteen fossilize…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Science #China #Climate #climatechange #Early-MiddlePleistocenetransition #Fossil #Gigantopithecus #Gigantopithecusblacki #Greatape #Guangxi #Hominid #paleoclimate #Pleistocene #Primate #Teeth #YanliCave1
https://www.newsbeep.com/us/708719/ -
Global Estimates Of Glacier Equilibrium-Line Altitude Ratios For Enhanced Paleoclimate Reconstructions
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https://doi.org/10.1038/s43247-026-03391-5 <-- shared paper
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https://gercglacier.streamlit.app/ <-- Glacier ELA Ratio Calculator (GERC), online tool
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https://www.antarcticglaciers.org/glacier-processes/mass-balance/introduction-glacier-mass-balance/ <-- shared technical article, “An Introduction To Glacier Mass Balance”
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#geostastics #glacier #glacial #landform #cryosphere #spatialanalysis #spatiotemporal #palaeoglaciology #glaciology #global #EquilibriumLineAltitudeRatio #ELA #ratios #paleoclimate #model #modeling #numericalmodeling #classification #decisiontree #steadystate #reconstruction -
Watching this right now on the release of a National Academies of Science Engineering and Medicine report on
A Synthesis Center for Paleoenvironmental Records of Extreme Events - 2026
@thirstygecko.bsky.social
@triptychphrases.bsky.social
and many others worked on thishttps://events.nationalacademies.org/46602/
Read about it here:
https://www.nationalacademies.org/projects/DELS-BESR-23-06/publication/29290
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Snowball Earth wasn’t fully frozen: ice-free oases sheltered early life
#Science #SnowballEarth #Cryogenian #ClimateScience #EarthHistory #EarlyLife #Geology #GarvellachIslands #Sturtian #Marinoan #Paleoclimate #Nature
https://the-14.com/snowball-earth-wasnt-fully-frozen-ice-free-oases-sheltered-early-life/ -
Still haven't gotten around comprehending how to convert a lat-lon grid with ice thickness to a correct regional sum of freshwater amount in Gt.
But something else keeps popping up in my head now.
Peltier's ice model / reconstruction (dunno which it is) doesn't include sea ice at all https://www.atmosp.physics.utoronto.ca/~peltier/data.php
Tarasov's GLAC1D model does. https://doi.org/10.5281/zenodo.10159104
At least the melted parts of sea ice is included. But not the ever-lasting part.That ever-lasting part is melting today, and has been melting for a long while now. But it didn't melt during past AMOC hickups. What melted back then was ice that covered Scotland with a whopping 400m ice wall. And higher ice mountains still melted in other regions. But not sea ice in the Arctic ocean.
...hm. What I really want to know is how the amount of freshwater influx back then
compares to the amount today, and how today's very little left-over ice would be capable of stopping AMOC.We'll be having a blue Arctic ocean before 2030, says a new study https://www.ft.com/content/63fbcf2b-9acc-4ccb-ac12-9f3b78e85b68
https://www.nature.com/articles/s41467-024-54508-3 #Heuze and #Jahn 2024, "The first ice-free day in the Arctic Ocean could occur before 2030" #openaccess 💃
Wouldn't it be cool to know by then how much ice in kilos or Gt melted ? And how that amount compares to the amount before previous AMOC shutdowns during the LGM and deglaciasation?
#paleoclimate #sealevelrise #GlacierMelt #AMOC #seaice #Arctic
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Who knows what the meltrate was in Gt, the Atlantic freshwater input per year (or 100yrs) in paleoclimate, before an AMOC stop or strong slowdown?
Glacier and sea ice from East Canada and West Greenland, and on the other AMOC limb, NE-Greenland with Scandinavia and the British isles.
I would like to be able to compare today's melt rate to past incidents of ice melt and AMOC slowdown / stop.
And to be able to plot data along other proxy time series to get a feel for things.Today's data is given in Gt. So that's what I'd be after in paleoclimate data. Sverdrup is not so useful to me.
Today's Greenland melt can be 444 Gt yr in 2019 as per https://essd.copernicus.org/articles/15/1597/2023/ by #Otosaka etal 2024
and on average 270 Gt/year as per State of the Cryosphere Report https://iccinet.org/statecryo24/ , based on #Greene etal 2024.Thank you for sharing my question🙏! And for pointers!
#AMOC #paleoclimate #seaice #glacier #GlacierMelt #Atlantic
#FollowerPower -
Destructive analyses make me sooooo nervous, but I am looking forward to finding out how old these samples are! Hopefully the results will be worth the anxiety 😅
#geochronolgy #UTh #stalagmite #palaeoclimate #paleoclimate #dontfuckitup
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Two consecutive days with #highlatitudedust activity in Patagonia result in a significant large #dust cloud certainly reaching the south central S. Atlantic. Note it is large in extension, but concentrations are just high for the area but low compared to lower latitudes.