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Dr. Nina Davtian (she/her/hers)

@ninadavtian.bsky.social
4.4K followers 2.3K following 748 posts

@cnrs-insu.bsky.social researcher at @climatecerege.bsky.social. Using biomarkers to study climate, ocean, and environment of the past. @icta-uab.bsky.social alumna. ORCID: orcid.org/0000-0002-3047-6064 🇫🇷 -> 🇪🇸 -> 🇫🇷

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Reposted by Dr. Nina Davtian (she/her/hers)
Prof Ian Hall @ianhall.bsky.social · 9h
Dynamic instability of the Wilkes Subglacial Basin Ice Sheet, East Antarctica ...it contains enough ice to raise global mean sea level by 3–4 m. Its marine-based geometry makes it a tipping risk whose temperature thresholds and timing remain poorly constrained. www.nature.com/articles/s43...
nature.com
Dynamic instability of the Wilkes Subglacial Basin Ice Sheet, East Antarctica - Nature Reviews Earth & Environment
The Wilkes Subglacial Basin is a marine-based sector of the East Antarctic Ice Sheet that is vulnerable to ocean-forced melting and climate warming. This Review assesses changes in ice-sheet extent in...
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Reposted by Dr. Nina Davtian (she/her/hers)
Zack Labe @zacklabe.com · 10h
We have some new interactive climate data visualizations through @observablehq.com at observablehq.com/@climatecent.... Hope they are useful, and feel free to share!
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Reposted by Dr. Nina Davtian (she/her/hers)
Zeke Hausfather @zekehausfather.com · 12h
Also see the accompanying video explainer for the new piece!
youtube.com
The world without wind solar
An analysis of what would have happened if the clean energy transition that the world has undertaken since 2005 had never occurred.
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Reposted by Dr. Nina Davtian (she/her/hers)
Zeke Hausfather @zekehausfather.com · 12h
I often see people argue that clean energy is not reducing emissions, because it just adds to rather than replaces fossil fuels. This argument is deeply misguided – clean energy built since 2005 has displaced 23 billion tons. I dive in over at The Climate Brink:
theclimatebrink.com
What if the world hadn't built wind and solar?
Clean energy does not simply “add to” global energy use; it displaces fossil sources that would otherwise get built.
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Reposted by Dr. Nina Davtian (she/her/hers)
Simon Kuestenmacher @simongerman600.bsky.social · 12h
In England there are very clear differences in subjects high school students choose for their final years. It’s exactly as cliche as you think… Source: buff.ly/luq8a8o
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Reposted by Dr. Nina Davtian (she/her/hers)
Marlo Garnsworthy @icebird.bsky.social · 13h
Good morning! Busy day! A quick #OceanDevotion on my lunch break walk. And…
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Reposted by Dr. Nina Davtian (she/her/hers)
CNRS @cnrs.fr · 13h
#Communiqué 🗞️ Contrairement à l’hypothèse fondatrice du « vernis tardif » proposée dans les années 1970, la Terre n’aurait pas connu d’apports importants de matériaux sidérophiles, ayant une forte affinité avec le fer, une fois la formation de son noyau achevée. 👉 www.cnrs.fr/fr/presse/fo...
Formation de la Terre : une étude remet en question l’hypothèse historique du « vernis tardif »
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Reposted by Dr. Nina Davtian (she/her/hers)
Andrew Dessler @andrewdessler.com · 13h
Nice post by @zekehausfather.com on The Climate Brink. He analyzes the claim that renewables are all energy additions but are not actually eating into fossil fuels. The world without solar and wind? www.theclimatebrink.com/p/what-if-th...
theclimatebrink.com
What if the world hadn't built wind and solar?
Clean energy does not simply “add to” global energy use; it displaces fossil sources that would otherwise get built.
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Reposted by Dr. Nina Davtian (she/her/hers)
Prof Ian Hall @ianhall.bsky.social · 13h
Fire is natural in many forests. But hotter, drier conditions and more intense fires can overwhelm their ability to recover, pushing some landscapes toward shrubland or other ecosystems. That’s the real concern: a changing fire regime... edition.cnn.com/2026/10/04/u...
edition.cnn.com
Wildfires across the US are changing forest landscapes – and the tipping point may be on the horizon | CNN
As Monica Turner trekked across the western hills of Yellowstone National Park, the cold rain was inescapable. Even the constant movement of putting one foot in front of the other as she fought throug...
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Reposted by Dr. Nina Davtian (she/her/hers)
ICTA-UAB @icta-uab.bsky.social · 13h
🤔Dou you want to know how do ICTA-UAB researchers feel about the potential impacts of AI on research? 🖥️🧠🛜We've asked some ICTA-UAB researchers how they see AI's impact on their work and on science more broadly. www.uab.cat/web/sala-de-...
uab.cat
How do researchers feel about the potential impacts of AI on research?
As warnings about AI grow louder, we asked ICTA-UAB researchers how they see AI's impact on their work and on science more broadly.
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Reposted by Dr. Nina Davtian (she/her/hers)
Jacquelyn Gill @jacquelyngill.bsky.social · 14h
Are you a postdoc or new faculty member who would benefit from an invited talk? My department is looking to bring someone for spring. Due to budgetary reasons, you must be either: 1. In driving distance to Orono, ME OR 2. Working on alpine or Arctic plants
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Reposted by Dr. Nina Davtian (she/her/hers)
Marlo Garnsworthy @icebird.bsky.social · 14h
Did you know I take 🎨🖌️commissions? If you’re looking for a unique gift for the holidays, now’s the perfect time to request an artwork for your loved one! But the window for the upcoming holiday season is closing soon!
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Reposted by Dr. Nina Davtian (she/her/hers)
Zack Labe @zacklabe.com · 14h
Monday ice update - #Arctic sea ice extent is currently the 18th lowest on record (JAXA data) • about 520,000 km² above the 2010s mean • about 710,000 km² below the 2000s mean • about 1,830,000 km² below the 1990s mean • about 2,490,000 km² below the 1980s mean More: zacklabe.com/arctic-sea-i...
Line graph time series of 2026's daily Arctic sea ice extent compared to decadal averages from the 1980s to the 2010s. The decadal averages are shown with different colored lines with purple for the 1980s, blue for the 1990s, green for the 2000s, and white for the 2010s. Thin white lines are also shown for each year from 2000 to 2025. 2026 is shown with a thick gold line. There is a long-term decreasing trend in ice extent for every day of the year shown on this graph between September and November by looking at the decadal average line positions.
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Reposted by Dr. Nina Davtian (she/her/hers)
Jacquelyn Gill @jacquelyngill.bsky.social · 14h
Early career folks and current (or future!) grad students: I'm teaching our Professionalism course in spring and mixing things up a bit based on feedback from students in our grad programs. Would this description make you want to take this class, especially as a first-year student?
"This course explores how to build a thoughtful, effective, and sustainable career in the biological sciences. Topics range from how science works—asking good questions, evaluating evidence, and cultivating curiosity and open-mindedness—to the practical skills of conducting, managing, communicating, and publishing research. Students will develop strategies for navigating scientific careers, including collaboration, writing and presenting, job searches, resilience, work-life balance, and handling rejection and uncertainty. The course also addresses research ethics, reproducibility, data stewardship, and other principles of responsible scientific practice, and fulfills the Responsible Conduct of Research (RCR) requirement."
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Reposted by Dr. Nina Davtian (she/her/hers)
Seismica @weareseismica.bsky.social · 15h
Adhikari et al. reconstruct the sequence of events behind the 26 August disaster in the Himalaya using seismological data. Nepali scientists and international collaborators piece together the complete story of this devastating event. 🔗 Read the article: seismica.library.mcgill.ca/article/view...
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Reposted by Dr. Nina Davtian (she/her/hers)
Eos @eos.org · 15h
Logging can have major effects on the amount of carbon stored in the forest floor—but some kinds of logging are more impactful than others, reports a new study in @jgrbiogeo.bsky.social. 🧪 #AGUPubs eos.org/research-spo...
eos.org
Preserving Soil Carbon by Preserving the Forest Floor - Eos
A 20-year study of British Columbia forests examines how soil carbon is affected by logging.
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Reposted by Dr. Nina Davtian (she/her/hers)
European Geosciences Union (EGU) @egu.eu · 17h
Early Career Scientists from across #Europe gathered in Brussels for the first Model European Parliament for Early Career Scientists (MEP4ECS), funded by the #EGU Special Activity, to explore EU #policymaking and strengthen their science-policy skills. 🧵Read more here: egu.eu/6HSJOO
Image description: The Early Career Scientists gathered in groups to role-play as their respective countries. The MEP4ECS group visiting the EU Parliament hemicycle! Text reads:''Early Career Scientists step into the role of European policymakers at the first MEP4ECS event!''
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Reposted by Dr. Nina Davtian (she/her/hers)
Manuel Chevalier @manuelchevalier.bsky.social · 17h
3/3 "We will provide data-analysis training" is a promise. A structured, network-wide curriculum is a credible plan. I can design it with you. DM me or email manuel.chevalier@datasharpacademy.com.
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Reposted by Dr. Nina Davtian (she/her/hers)
Manuel Chevalier @manuelchevalier.bsky.social · 17h
2/3 The goal is not to turn them into software developers. It is to make them independent enough to understand their work, evaluate results and collaborate. These technical skills are also transferable skills that improve employability.
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Reposted by Dr. Nina Davtian (she/her/hers)
Manuel Chevalier @manuelchevalier.bsky.social · 17h
1/3 Your MSCA Doctoral Network should not leave every candidate to invent their own way of working with data. Give them shared foundations in R and Python from the beginning.
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Reposted by Dr. Nina Davtian (she/her/hers)
Eos @eos.org · 17h
It's World Teachers' Day! Here's to the teachers who mentored us, shaped us, and fostered curiosity in us. 🧑‍🏫 If you're a teacher yourself, check out ENGAGE, our resource designed for HS & undergraduate educators seeking to improve science literacy eos.org/engage
eos.org
ENGAGE - Eos
ENGAGE: A science news resource for high school, two-year college, and undergraduate educators.
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Reposted by Dr. Nina Davtian (she/her/hers)
Ryan H Glaubke @ocnogrphr.bsky.social · 17h
To anyone out there who feels called to science, here are 100 bleeding edge questions to inspire you: 🧪
nytimes.com
What Are the Biggest Questions in Science Today? 100 Scientists Weigh In.
We asked 100 scientists about unsolved problems in their fields. They sent back provocations — on the origins of life, the possibilities for human progress and much more.
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Reposted by Dr. Nina Davtian (she/her/hers)
Lauriane LOCATELLI @laurianelocatelli.bsky.social · 17h
Mon article « Toponymes de Pisidie. Distribution géographique et classement sémantique » In Nieto Izquierdo & Alonso Déniz (éds.),Noms de lieux en Méditerranée antique, Lyon : MOM Éditions, est en ligne sur HAL hal.science/hal-05708155 #ScienceOuverte #HAL #Pisidia #AnatolianStudies
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Reposted by Dr. Nina Davtian (she/her/hers)
Ruth Mottram @ruthmottram.eurosky.social · 16h
This week the HCLIM group are having our working week. What is HCLIM and why should you care? Well, #HCLIM - short for #Harmonie-Climate - is a European high resolution regional climate model, we provide high quality climate data suitable for #ClimateServices + #ClimateAdaptation www.hclim.org
A slide titled HIRLAM: 1985-2025 and showing a map of europe coloured by weather service model consortia
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Reposted by Dr. Nina Davtian (she/her/hers)
Zack Labe @zacklabe.com · 16h
#Antarctic sea ice extent has now dropped to the lowest on record for this time year... See more at zacklabe.com/antarctic-se...
Line graph time series of daily Antarctic sea ice extent for each year from 1979 through 2026. This year is currently the lowest on record for the date. A seasonal cycle is also visible on this graphic, but no long-term trend is visible.
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Reposted by Dr. Nina Davtian (she/her/hers)
Scientific Committee on Antarctic Research (SCAR) @scar-antarctic.bsky.social · 16h
🐋 What happens when whales and a growing fishery depend on the same resource? Explore Ice Narrative Fellow Matt Koller’s story of science, conservation in the South Orkney Islands. 🎥 Watch the video, then dive into the StoryMap & podcast. StoryMap: storymaps.arcgis.com/stories/8e7e...
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Reposted by Dr. Nina Davtian (she/her/hers)
Jeremy Bassis @bassisjeremy.bsky.social · 16h
What do y'all do when you are sent a paper to review that sure looks like it was written by AI?
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Reposted by Dr. Nina Davtian (she/her/hers)
CNRS @cnrs.fr · 18h
#ExpertsCNRS 🔎 Journalistes, en lien avec le #NobelPrize de médecine, le bureau de presse du #CNRS vous propose des scientifiques pouvant vous éclairer sur les travaux des lauréats. Si vous êtes intéressés : 📞📩 cnrs.fr/fr/contacts
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Reposted by Dr. Nina Davtian (she/her/hers)
European Geosciences Union (EGU) @egu.eu · 18h
Are you an expert in #mentoring and professional development🚀? The #EGU Outreach Committee is seeking a consultant to design, deliver, and evaluate EGU's first-ever online mentoring programme. 📅Friday 16 October 2026. 📩 outreach@egu.eu Learn more: egu.eu/47Y4AO 📸: Giacomo Corti on imaggeo.egu.eu
Image description: Thre people discussing and taking notes during fieldwork. Tesxt reads:  EGU seeks a consultant to assist with the new, 2027 mentoring programme.
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Reposted by Dr. Nina Davtian (she/her/hers)
Nobel Prize @nobelprize.org · 19h
BREAKING NEWS The 2026 Nobel Prize in Physiology or Medicine has been awarded to Karl Deisseroth, Peter Hegemann and Georg Nagel “for their discoveries concerning light-gated ion channels and optogenetics.”
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Reposted by Dr. Nina Davtian (she/her/hers)
Laura Howes @laurahowes.bsky.social · 19h
Happy first full week of October to all who celebrate
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Reposted by Dr. Nina Davtian (she/her/hers)
CNRS @cnrs.fr · 21h
Dans « Le Triomphe des égoïsmes », le sociologue Camille Peugny montre que l’adhésion croissante des classes moyennes supérieures à l’idéologie néolibérale contribue à la montée des inégalités et fragilise dangereusement la cohésion sociale.
lejournal.cnrs.fr
Tous égoïstes ?
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Reposted by Dr. Nina Davtian (she/her/hers)
European Geosciences Union (EGU) @egu.eu · 21h
STARTING SOON...⌛!👇 In this #webinar, you will learn: -Why does science matter in multilateral environmental negotiations? -How can scientists effectively engage with decision makers? 📅Monday, 5 October 2026 at 11:00 CEST Register now: egu.eu/55PJGS 📸: Alexandra Kushnir on #imaggeo
Image description: Sandstone in the background. Text reads: '' Webinar Beyond SciComm 101: Building Environmental Science-Policy Dialogue – Is Science Up For Negotiation? Join Meeting - Monday, 5 October 2026 at 11:00 CEST. Register Now!''
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Reposted by Dr. Nina Davtian (she/her/hers)
Bon Pote @bonpote.com · 21h
Exclusivité Bon Pote : quels partis votent pour réduire la dépendance à la voiture thermique ? Alors que le prix de l'essence atteint presque 3€ dans certaines stations, nous avons analysé tous les votes à l'Assemblée nationale depuis 2022 pour sortir de cette dépendance. bonpote.com/quels-partis...
bonpote.com
Quels partis ont voté pour réduire la dépendance à la voiture thermique ?
quels partis votent le plus pour maintenir, ou au contraire pour sortir de la dépendance à la voiture à essence ? Notre analyse démontre
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Reposted by Dr. Nina Davtian (she/her/hers)
Planet-Terre @planet-terre.bsky.social · 22h
Meneham (ou Menez Ham) et son granite diaclasé, raviné et “cannelé”, commune de Kerlouan (Finistère) – Un chaos granitique encadrant une maison bretonne. Blocs, rigoles et diaclases. – Pierre Thomas #géologie #teamSVT planet-terre.ens-lyon.fr/ressource/Im...
Ancien corps de garde bâti au milieu de rochers de granite formant un mont (“menez” en breton), ce qui le dissimule au regard des contrebandiers et de l'ennemi anglais, et le protège des coups de vent et de mer fréquents dans la région.
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Reposted by Dr. Nina Davtian (she/her/hers)
Simon Kuestenmacher @simongerman600.bsky.social · 05/10/2026
Women dominate image heavy social media, men dominate word heavy social media. What other interpretation of the spectrum do you see emerge here?
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Reposted by Dr. Nina Davtian (she/her/hers)
Dr. Or M. Bialik |📚|🔬|🌊|⚒️ @obialik.bsky.social · 05/10/2026
The more we learn about early life and early animals, the more convinced I get that life could also evolve on other planets. New calibration just pushed initiation of earliest animals by almost 200 million years. 🧪⚒️ Link: www.science.org/doi/10.1126/sciadv.…
Ediacaran sea floor, Namibia, Southwest Africa - 543 million years ago. Credit: Museum of Natural History, University of Oxford / Mighty Fossils.
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Reposted by Dr. Nina Davtian (she/her/hers)
Simon Kuestenmacher @simongerman600.bsky.social · 05/10/2026
X is indeed huge in Japan. My Facebook Page (Simon Shows You Maps) is surprisingly popular in Poland. Fun chart to study more deeply.
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Reposted by Dr. Nina Davtian (she/her/hers)
Andrej Spiridonov @andrejpaleo.bsky.social · 04/10/2026
"Vrba'ian" approach in understanding evolution connecting morphology, phylogeny, and the development 👇 "the earliest...evidence of the African buffalo lineage...conserved allometry and heterochrony in the evolutionary history of Syncerus" sciencepress.mnhn.fr/sites/defaul... 🧪⚒️ #Geology #Paleobio
Basal horn core anteroposterior (DAP) and transverse (DT, dorso-ventral in Syncerus Hodgson, 1847) diameters in: A, African fossil and extant bovinsHolotype cranium of Syncerus ekosowan n. sp. OMO 53-10001: A, dorsal; B, ventral; C, anterior; D, posterior; E, left lateral; F,  occlusal views. Scale bars: A-E, 10 cm; F, 5 cm.
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Reposted by Dr. Nina Davtian (she/her/hers)
Zack Labe @zacklabe.com · 04/10/2026
My conversation with @jimteskenc9.bsky.social on climate monitoring, changes in the Arctic, and the importance of supporting observational Earth system data: youtube.com/watch?v=3DCB...
youtube.com
Teske's Tidbits: Arctic Climate
YouTube video by NewsChannel 9 WSYR Syracuse
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Melaine Le Roy @subfossilguy.bsky.social · 04/10/2026
Golden eagle and Râteau East (3,809 m) today! 🏔🦅🤍
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Reposted by Dr. Nina Davtian (she/her/hers)
The Keeling Curve @keelingcurve.bsky.social · 04/10/2026
Baseline reading not available, data too variable 03-Oct-2026 keelingcurve.ucsd.edu
keelingcurve.ucsd.edu
The Keeling Curve
The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.
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Reposted by Dr. Nina Davtian (she/her/hers)
Zack Labe @zacklabe.com · 04/10/2026
Last month was the 3rd lowest #Antarctic sea ice extent on record for the month of September. This was 1,170,000 km² below the 1981-2010 September average. Data from the @nsidc.bsky.social at nsidc.org/data/seaice_...
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Melaine Le Roy @subfossilguy.bsky.social · 04/10/2026
Tabuchet Glacier and Doigt de Dieu (3,973 m asl, 2nd highest peak of La Meije) yesterday! 🤩
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David Shiffman, Ph.D. 🦈 @whysharksmatter.bsky.social · 04/10/2026
Want more shark science and conservation on your Bluesky feed? go.bsky.app/Q1x1gJB
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Douwe van Hinsbergen @vanhinsbergen.bsky.social · 04/10/2026
A picture impression of our Sichuan fieldwork in China is now on my website! www.geologist.nl/china-sichua...
geologist.nl
China – Sichuan Basin 2026 – Douwe J.J. van Hinsbergen
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Simon Kuestenmacher @simongerman600.bsky.social · 04/10/2026
How far can you get in 8 hours of driving starting from 6 South American capitals? Source: buff.ly/I7MjTNq
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Ifremer 🌊 @ifremer.bsky.social · 04/10/2026
L’océan est l’un des puits de carbone les plus importants. Une partie de cette absorption de CO2 est assurée par les organismes marins eux-mêmes. 👉 L'Ifremer étudie ces mécanismes de captation et de stockage de carbone et l'ampleur des phénomènes en jeu.
ifremer.fr
Les organismes marins participent aussi à la régulation du climat
L’océan est l’un des puits de carbone les plus importants sur le globe. Depuis les années 1960 jusqu’aux années 2010, il a absorbé 25 % du CO2 atmosphérique émis par les activités humaines. Cette absorption implique des processus physico-chimiques, mais aussi biologiques assurés par le...
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European Geosciences Union (EGU) @egu.eu · 04/10/2026
TOMORROW!👇 In this #webinar, you will learn: -Why does science matter in multilateral environmental negotiations? -How can scientists effectively engage with decision makers? 📅Monday, 5 October 2026 at 11:00 CEST Register now: egu.eu/55PJGS 📸: Alexandra Kushnir on #imaggeo
Image description: Sandstone in the background. Text reads: '' Webinar Beyond SciComm 101: Building Environmental Science-Policy Dialogue – Is Science Up For Negotiation? Join Meeting - Monday, 5 October 2026 at 11:00 CEST. Register Now!''
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Zack Labe @zacklabe.com · 04/10/2026
The last three months really highlight just how widespread the unusually warm sea surface temperatures are found. In addition El Niño, there are several large marine heat waves, with one of the largest departures still across the North Pacific. Data from www.ncei.noaa.gov/products/opt... 🌊
Global map showing sea surface temperature anomalies in July-August-September 2026 relative to 1982 to 2010. Most areas are warmer than average. Red is shown for warmer sea surface temperatures, and blue is shown for colder sea surface temperatures. Data is from NOAA OISSTv2.1.
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