From 15.5-15 Kya rapid warming enabled 'humans to rapidly repopulate the northwest margins of Europe (>50° N and encompassing the area of Britain, Ireland, the surrounding islands and the North Sea basin) after regional abandonment during the Last Glacial Maximum...'
#palaeoClimate
Very interesting #demographic model for historic #African populations reaching back 74,000 years -- that is before ancestors of everyone today began moving out of Africa. This factors in #malaria risk as contributing to movements and success of populations. Even that long ago, even with #huntergatherers.
"Our results show that humans strongly avoided or were unsuccessful in potential malaria hotspots. The effects of these choices shaped human demography for the last 74 kya, and likely much earlier, by fragmenting human societies over time and contributing to the formation of modern population structure."
Always a good day when friends have a good day! Out today in NATURE (!) from Monika Markowska - 8 million year record of recurrent humid phases in Arabia.
https://www.nature.com/articles/s41586-025-08859-6
#Quaternary #QuaternaryScience #speleothem #speleothems #palaeoclimate
Another excellent edition of Quaternary Australasia is out! I always enjoy the post-conference student reports, especially when the students seem to have really gotten into the 'AQUA vibe'!
#AusQuaternary #QuaternaryScience #Palaeoclimate #paleoclimate
#Peerreviewed: "We interpret this #paleoclimate as summer dry and winter wet—a climate analogous to modern day warm #Mediterranean climates in the Köppen‐
Geiger climate classification system" https://doi.org/10.1029/2024PA004874
That'd be Csa. Pic: fig. 4, modern analogs 🤨
Well, thanks to #ClimateChange, they all turn Csa eventually: #OldPosts
Wladimir Köppen – a climate-vegetation genius, and what this has to do with wine
https://researchinpeace.blogspot.com/2018/02/wladimir-koppen-climate-vegetation.html
The first paper for our paper club is this recent one from McKay et al., presenting a thorough investigation of the (supposed?) 4.2 ka event. I'd read it when it was published, but just went through again in more detail, and what a good paper. Robust stats (of course, from this group), and they do a really nice job of building the case. I hope the group enjoys it!
🔴 🇦🇺 Highest ocean heat in four centuries places Great Barrier Reef in danger
“Climate model analysis confirms that human influence on the climate system is responsible for the rapid warming in recent decades. This attribution, together with the recent ocean temperature extremes, post-1900 warming trend and observed mass coral bleaching, shows that the existential threat to the GBR ecosystem from anthropogenic climate change is now realized.”
Henley, B.J., McGregor, H.V., King, A.D. et al. Highest ocean heat in four centuries places Great Barrier Reef in danger. Nature 632, 320–326 (2024). https://doi.org/10.1038/s41586-024-07672-x
#OpenAccess #OA #Research #Article #DOI #Science #Climate #ClimateChange #Environment #Palaeoclimate #Ocean #GreatBarrierReef #Australia #Academia #Academic #Academic @science @climatechange @environment
A full on but successful 4 days on the XFM beamline at the Ausgralian Synchrotron. We mixed things up this time by running some tree cores for Casey's PhD work - lots of cool features showing up! We also mapped a bunch of stalagmites, including some pilot data for my next job. 74 elemental maps made, a new record for us!
#synchrotron #xfm #dendrochemistry #speleothem #stalagmite #palaeoclimate #palaeoemvironment
Nice new paper from Danielle Udy reconstructing the fire weather index for Eastern Australia using the Law Dome ice core. Recent changes in FFDI are unprecented in the palaeo record...
#palaeoclimate #FireWeather #wildfire #pyrocene #fire #antarctica #Australia
Box of rocks arrived for me today 😍 we will be taking these beauties to the Aus Synchrotron next month to get an idea if they might be suitable for #palaeofire research. Happily, these were collected by a friend of mine for her PhD, which means a potential collaboration with a friend (yay!), and the reuse of old samples rather than collecting new (double yay!).
"Here we combine genetic evidence and palaeoecological models to infer the geographic location that acted as the Hub for our species during the early phases of colonisation of Eurasia."
Vallini, L., Zampieri, C., Shoaee, M.J. et al. The Persian plateau served as hub for Homo sapiens after the main out of Africa dispersal. Nat Commun 15, 1882 (2024). https://doi.org/10.1038/s41467-024-46161-7 #OpenAccess #OA #Article #Research #DOI #Science #Archaeology #Archaeodons #Biology #Anthropology #BiologicalAnthropology #Genetics #Population #EvolutionaryGenetics #Palaeoclimate #Ancient #DNA #PopulationGenetics #Eurasia #Academia #Academic #Academics @archaeodons @anthropology @biology @science
I've said this a few times now, but, pending disaster, today is my last day of labwork for this postdoc! I've got 4 mm of sample to mill (40 samples!). This speleothem grew during the early Holocene before stopping, and starting again in the 1930s. I'm very excited to see the stable isotope data approaching this hiatus!
The listening entertainment for the day is the Hobbit, as read by Andy Serkis. Libraries are the best 💚
"Here we use an ice core record from grounded ice at Skytrain Ice Rise to constrain the timing and speed of early Holocene ice sheet retreat."
Grieman, M.M., Nehrbass-Ahles, C., Hoffmann, H.M. et al. Abrupt Holocene ice loss due to thinning and ungrounding in the Weddell Sea Embayment. Nat. Geosci. (2024). https://doi.org/10.1038/s41561-024-01375-8 #OpenAccess #OA #Research #Article #DOI #Geoscience #Science #STEM #Antarctic #Ice #Holocene #Palaeoclimate #Climate #Earth #Academia #Academic #Academics @science
Cool new cave research out today in #Nature! Weij et al. find that in southern Australia glacial periods tend to be moist, contrary to the currently held view that glacial periods are cool and dry in the subtropics.
Neat work from Rieneke and a bunch of Aussie quaternarists!
https://www.nature.com/articles/s41586-023-06989-3
#palaeoclimate #paleoclimate #LGM #glacial #Australia #AusQuaternary
Fantastic day with the #iClimate crew from @AarhusUni at their annual meeting . A genuinely interdisciplinary #Climate group with talks covering #Energy grids and how to account for #Renewables in #IAMs, how to encourage more people in #FlyingLess plus #palaeoclimate the state of #Arctic #SeaIce + #methane #aerosols #biodiversity and the #Economics of #climateadaptation
They're doing some really great #Science + #SocialScience research. Go check them out.
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
Good morning everyone! Here's my latest #Connections #Introduction #Introductions #TwitterMigration post, where I curate interesting accounts for you to follow from across the #Fediverse :fediverse:
@maryrobinette is a #writer #author, and I am listening to her incredible #LadyAstronaut series at the moment. If you love #SciFi (esp hard scifi) you should read it, too! 🇺🇸
@sayashk is a #ComputerScience #PhD candidate at #Princeton, who is researching failures in #ML (he's also co-running a workshop on open #FoundationModels in about 15 hours, see my previous posts for more info) 🇺🇸
@michcampbell is Dr Micha Campbell and she is a #PalaeoClimate #PostDoc living on #Dharawal country 🇦🇺
@mthv is a #Research #Engineer who works in #GIS at #CNRS 🇫🇷
@astrolori is Lori and she is into #OpenSource, #fashion, #space and #tech #WomenInSTEM 🇨🇦
@pandas_dev is the official account for #pandas, the #Python #DataAnalysis tool 🐍 📊
@jessie is a lover of #languages and helps run #CommonVoice, @mozilla 's open #voice #data set, which now supports over 100 languages. She also teaches #WebDev and loves #hiking. She's awesome you should follow her 🇬🇧
That's all for now, please do share your own lists so we can create deeper connections, and a tightly-connected community here
I'm reminded here of @maryrobinette's short story - "Red Rockets" - "She built something better than fireworks. She built community."
Barham, L., Duller, G.A.T., Candy, I. et al. Evidence for the earliest structural use of wood at least 476,000 years ago. Nature (2023). https://doi.org/10.1038/s41586-023-06557-9 #OpenAccess #OA #Article #Archaeology #Archaeodons #Limnology #Palaeoclimate #Sedimentology #Academia #Academic #Academics @archaeodons
New Geological Study Rewrites History Of The World's Highest Peaks
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https://www.forbes.com/sites/davidbressan/2023/08/15/new-geological-study-rewrites-history-of-the-worlds-highest-peaks/ <-- shared media article
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https://doi.org/10.1038/s41561-023-01243-x <-- shared paper
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#GIS #spatial #mapping #remotesensing #uplift #Himalayas #tibet #model #modeling #research #uplift #sampling #hydrothermal #oxygenisotopes #India #Eurasia #mountains #geology #structuralgeology #TibetanPlateau #palaeoaltimetry #palaeoelevation #geodynamic #palaeoclimate #GangdeseArc #subduction #lithosphere #continentalcollision
I bloody LOVE to see friends kicking goals! New paper out today from the brilliant Georgy Falster at #ANU "Forced changes in the Pacific Walker circulation over the past millennium"
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