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Carrie Lear (she/her)

@carolinelear.bsky.social
1.9K followers 816 following 5 posts

Professor of Earth Science researching past climate and ice sheet dynamics. My own views.

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Reposted by Carrie Lear (she/her)
David Ho @davidho.bsky.social · 19/02/2026
If you're an environmental journalist in the UK or Europe, the biggest gathering of ocean scientists in the world is happening in Glasgow next week, and you should consider coming to cover some of the most important findings about our life support system. #OSM26
agu.org
Press | Ocean Sciences Meeting 2026
Welcome to the OSM26 Newsroom and Press Center. Here you will find information that will help you cover the meeting and register.
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Reposted by Carrie Lear (she/her)
Prof Ian Hall @ianhall.bsky.social · 19/02/2026
The implications of overshooting 1.5 °C on Earth system tipping elements - a review "Global warming must peak below 2°C, return to below 1.5°C as quickly as possible (i.e. within this century), and to around 1°C thereafter to limit tipping point risks". iopscience.iop.org/article/10.1...
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Carrie Lear (she/her) @carolinelear.bsky.social · 06/02/2026
I feel physically sick. This cannot be normalised.
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Reposted by Carrie Lear (she/her)
Julius Garbe @juliusgarbe.github.io · 21/11/2025
🎞️ After COP30 fire and floods: AMOC shutdown 🔥🌊 Our event on #AMOC shutdown was interrupted by the fire at #COP30 yesterday – but this is an important message so we wanted to make sure you heard it. ▶️ www.youtube.com/watch?v=B-0e... @rahmstorf.bsky.social @iccinet.bsky.social
youtube.com
After COP30 Fire and Floods: AMOC Shutdown
YouTube video by International Cryosphere Climate Initiative
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Reposted by Carrie Lear (she/her)
Prof Ian Hall @ianhall.bsky.social · 05/10/2025
The Greenlandification of Antarctica Antarctica is beginning to behave more like Greenland, with surface melt, ice dynamics, and climate feedbacks in Antarctica exhibiting "Greenland-like” traits, which have major implications for sea-level rise projections. www.nature.com/articles/s41...
nature.com
The Greenlandification of Antarctica - Nature Geoscience
Climate and ice sheet processes in Antarctica increasingly reflect those observed earlier in Greenland. Applying process insights from Greenland can improve projections of future Antarctic ice and climate behaviour.
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Reposted by Carrie Lear (she/her)
Prof Ian Hall @ianhall.bsky.social · 05/10/2025
The before and after images showing glaciers vanishing before our eyes www.bbc.com/news/article...
bbc.com
Before and after images show glaciers vanishing before our eyes - BBC News
They are melting like never seen before, changing landscapes around the world beyond recognition.
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Reposted by Carrie Lear (she/her)
Rob Larter @polarrobs.bsky.social · 30/09/2025
🧵🧪 In session on policy and societal requirements at the Royal Society discussion meeting today, Prof Hans-Otto Pörtner, former Co-Chair of the IPCC Working Group II, stated that he thinks keeping global temperature rise "below 1.5 [°C above pre-industrial] is probably now out of reach".
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Reposted by Carrie Lear (she/her)
Tessa Khan @tessakhan.bsky.social · 31/08/2025
This would be laughable if it wasn't so serious: yet again, the Tories are claiming that we can get "all our oil and gas" from the North Sea and that we should be doing even more to support the industry to extract. There are several reasons why we should treat this with maximum scepticism:
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Carrie Lear (she/her) @carolinelear.bsky.social · 18/08/2025
New paper! Check out @zifeiyang.bsky.social gorgeous data from M2 glaciation (3.3Ma) - stunning Melonis Mg/Ca temperature records allow us to be confident about ice growth, but this was not like later glaciations following iNHG, we think gateways were more important: www.nature.com/articles/s41...
nature.com
Major sea level fall during the Pliocene M2 glaciation - Nature Communications
This study refines benthic foraminiferal Mg/Ca paleothermometry to reduce uncertainties to ±0.2-0.3 °C, which was then applied in Atlantic and Pacific sediment cores to reconstruct Mid-Pliocene M2 gla...
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Reposted by Carrie Lear (she/her)
Virginia Gewin @virginiagewin.bsky.social · 11/04/2025
The budget proposal eliminates: NOAA’s Oceanic and Atmospheric Research office Stops funding regional climate data, climate competitive research or sea grant programs Severely defunds the Natl Ocean Service & the NMFS www.cnn.com/2025/04/11/c...
cnn.com
Trump’s draft budget eviscerates weather and climate tracking and research | CNN
The move would devastate weather and climate research even as weather is becoming more erratic and extreme, and would cripple the US industries — including agriculture — that depend on free, accurate ...
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Chen Zhao @czhao-ice.bsky.social · 07/04/2025
📣 Our new paper is out in Nature Communications! Subglacial water—often overlooked—can change sea-level rise projections by up to a factor of three. Big implications for how we model Antarctica. 🔗 www.nature.com/articles/s41...
nature.com
Subglacial water amplifies Antarctic contributions to sea-level rise - Nature Communications
Hidden water beneath Antarctica’s ice can accelerate ice loss, potentially raising sea levels by over 2 meters by 2300. These findings highlight the urgent need to incorporate evolving subglacial hydr...
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Reposted by Carrie Lear (she/her)
David Ho @davidho.bsky.social · 10/03/2025
You want to know about this NASA Sea Level Projection Tool, which allows you to visualize and download the sea level projection data from the IPCC 6th Assessment Report (AR6).
sealevel.nasa.gov
IPCC AR6 Sea Level Projection Tool
Visualize and download global and local sea level projections from the Intergovernmental Panel on Climate Change Sixth Assessment Report.
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Reposted by Carrie Lear (she/her)
Rob Larter @polarrobs.bsky.social · 02/03/2025
🧪🌊 🧵 As the minimum in Antarctic sea-ice extent has now dipped below 2 million km² for the third year in a row, it is looking increasingly like this is the new normal. In the 10 years up to 2015 the minimum extent averaged more than 3 million km². Graph from @nsidc.bsky.social 1/n
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Howard Lee @hlee.bsky.social · 28/02/2025
This paper by Barker et al resolves many details about how Earth’s orbital wobbles caused glacial cycles of expansion & contraction of ice sheets over the last ~800,000 years 🧵 ⚒️🧪 1/11 www.science.org/doi/10.1126/...
science.org
Distinct roles for precession, obliquity, and eccentricity in Pleistocene 100-kyr glacial cycles
Identifying the specific roles of precession, obliquity, and eccentricity in glacial-interglacial transitions is hindered by imprecise age control. We circumvent this problem by focusing on the morpho...
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Reposted by Carrie Lear (she/her)
Science Magazine @science.org · 06/02/2025
A new special issue of Science highlights research on Earth’s frozen places—from the Arctic to the Antarctic—and how it’s changing due to climate change and the geopolitical challenges this important work faces. Learn more: scim.ag/4jPYRID
Climate change in the polar regions of our warming world is threatening to transform many of its features, such as this icy tableau in the Fish Islands off the coast of the Antarctic Peninsula. There is still much to learn about these places before we know better what those changes may be.
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Reposted by Carrie Lear (she/her)
Rob Larter @polarrobs.bsky.social · 26/01/2025
Some people on this and other social media platforms have been claiming that something dramatic is about to happen at Thwaites Glacier, and implying that this will result of an abrupt rise is sea level within a few years. So what's really going on? 🧵🧪
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Glen Peters @glenpeters.bsky.social · 16/01/2025
Current policies & NDCs take the world to 2-3C in 2100, across a range of studies. The biggest gap is strengthening climate action to ensure net zero pledges are met, leading to <2C in 2100. @hausfath.bsky.social journals.sagepub.com/doi/10.1177/...
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David Ho @davidho.bsky.social · 29/11/2024
We all think plastic pollution is a problem, and it is. In the nearly 70 years between 1950 and 2019, the world produced a total of ~9.5 billion tonnes of plastic. But all the plastic we have EVER produced weighs as much as CO₂ we emitted into the atmosphere during the first three months of 2024!
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Marco Petagna @petagna.bsky.social · 25/11/2024
In our warming world there is an increasing chance of extreme rainfall events and flash flooding For every 1C rise in temperature the atmosphere can hold 7% more moisture...
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Reposted by Carrie Lear (she/her)
Ketan Joshi @ketanjoshi.co · 22/11/2024
Please allow me to re-share my rough sketch of some advanced carbon capture technology
a cartoon with two panels

panel one is a stick figure saying "oh! a fossil fuel!!" standing above a crudely drawn black lump under a brown ground

Panel two is them walking away and saying "I'll just leave it there"

The head of the person is not a drawn circle but the letter O, because the random software I used to draw it did that for unexplained reasons
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Rage Against the Miocene @organiccarbon.bsky.social · 18/11/2024
It's the extremes that will get us. A hotter world has much hotter heat waves. www.theguardian.com/environment/...
theguardian.com
Climate crisis to blame for dozens of ‘impossible’ heatwaves, studies reveal
Exclusive: Analyses are stark evidence of how global heating is already supercharging deadly weather beyond anything ever experienced by humanity
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Reposted by Carrie Lear (she/her)
Polar Jane @jfrumble.bsky.social · 18/11/2024
Changes in the #PolarRegions will affect everyone. Understanding and predicting this change needs commitment and talent; and that needs a supportive and inclusive community. Wishing everyone a happy #PolarPride as part of a wider celebration of #DiversityInPolarScience 🐻‍❄️🐧🥶🏳️‍🌈
#PolarPride pin and sticker
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Reposted by Carrie Lear (she/her)
Clive Trueman @clivetrue.bsky.social · 25/10/2024
Please share - PhD with me, #lnadler and BAS colleagues Lloyd Peck, Gabi Stowasser and Ryan Saunders at unisouthampton. - Fish metabolism across latitudes - lovely team, cool science and great fish! Please contact me, details: tinyurl.com/mhfp8f2h #MarineLife #Science
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Prof Penny Endersby @pennyend.bsky.social · 26/07/2024
The Met Office has been working hard to make more of our weather and climate data available for interest or research. I’ll share some links in a thread 🧪First up is our climate data portal climatedataportal.metoffice.gov.uk
climatedataportal.metoffice.gov.uk
The Met Office climate data portal
Explore and download observed and projected climate data from the Met Office.
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Reposted by Carrie Lear (she/her)
Helen Czerski @helenczerski.bsky.social · 26/07/2024
While it's very funny to watch The Metals Company whine about the deep ocean oxygen discovery they helped fund, I worry that this only the start. Climate tech startups want science to support their business case, but many are going to discover that science is about reality, not their bottom line 1/2
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Ed Hawkins @edhawkins.org · 26/07/2024
Paris is warming #ShowYourStripes #Olympics
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Chris Bataille @chrisbataille.bsky.social · 16/07/2024
Excellent piece from the Australian Sydney Morning Herald that puts the Chinese green industrial revolution in a balanced context and language most can absorb. Excellent journalism www.smh.com.au/environment/...
smh.com.au
‘It’s good news’: Scientists suspect history about to be made in China
Evidence is mounting that some time over the past few months, China’s greenhouse gas emissions peaked. If so, it is likely that a global decline has begun.
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SWAIS2C @swais2c.bsky.social · 21/06/2024
It's #ShowYourStripes Day. Here are ours. As our planet warms, so does the ocean, sending warmer waters to Antarctica & under the ice shelves. Ice shelves act as vital dams, holding back the ice sheets flowing to the sea & slowing sea level rise. #SaveTheShelves #ClimateCrisis 🧪
Warming stripes showing the increase in global temperatures from 1850 to 2023.
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David Ho @davidho.bsky.social · 15/06/2024
This is the right image to use for a heat wave; not one of children playing in the fountain or people frolicking on the beach.
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Larry Neufeld @larryneufeldsk.bsky.social · 07/05/2024
Just landed: the new CAT Data Explorer! It brings together data from country analyses, ratings & 1.5°C compatible benchmarks to help policymakers, researchers, media, & interested citizens better understand countries’ progress on climate mitigation climateactiontracker.org/cat-data-exp...
climateactiontracker.org
Data Explorer
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Quaternary Research Association @quaternaryra.bsky.social · 05/03/2024
Announcing this year’s postgraduate conference to be hosted by Queen’s University, Belfast from the 29 -31st August! This is a great opportunity to showcase your research in a friendly environment, and get to know other Quaternary ECRs. Registration will be open soon!
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Jo Wolfe, PhD @jopabinia.bsky.social · 04/03/2024
Museum folks, please bring your fury! Like the Duke herabarium, the National Museum of Wales is now in danger of losing support for all its geology/paleo collections! 🧪 Petition: petitions.senedd.wales/petitions/24...
Screenshot from my collaborator Joe Botting's fb post:
There's horrendous news about funding for Amgueddfa Cymru - National Museum Wales... and they need help. 
    I'm an Honorary Research Fellow there, but the current funding cuts mean that the geology department is about to cut down to almost nobody. As I understand it, they will lose everyone except one palaeontology curator and one collections manager. No other staff, and no mineralogists whatsoever - they will all be sacked, including three of my friends, at a time when finding another job in the field is nigh-on impossible. The NMW palaeontology collections are a major repository of knowledge, both of Welsh material and further afield. Having so few staff basically mothballs the collection, and puts it at risk of closing completely. This is unthinkable... but it seems to be happening. 
The cuts also affect the National Library and the Royal Commission. I'm not one for petitions in general, but this one needs help in order to be
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Kau))) @carbon8.bsky.social · 17/02/2024
Very excited to see this paper in print written by the first graduate student who worked in my laboratory, Maya Prabhakar, on planktic #foraminifera in Recent Arctic Ocean sediments! Take home message: Arctic forams are weird, but not *THAT* weird... 🧪🔬🐚 pubs.geoscienceworld.org/cushmanfound...
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Sam Burgess @oceanterra.org · 08/02/2024
January 2024 was the warmest January on record. 
New data from CopernicusECMWF shows that we've now had 
- the eighth record breaking month in a row and 
- twelve months (Feb 23-Jan 24) with global temperatures more than 1.5ºC above the pre-industrial reference baseline. 🧪⚒️
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Carrie Lear (she/her) @carolinelear.bsky.social · 02/02/2024
Letter from John Imbrie to Quaternary geologist DQ Bowen in 1979 (found by Steve Barker inside one of DQ’s books). Love the reference to the Oxford fellow 😂
Letter to DQ Bowen from John Imbrie. Second paragraph reads “your treatment of Hays et Al, appropriately brief, is cautious but fair. By your next edition, there will be sufficient evidence to convince all but the celibate monks of Tibet, and perhaps the odd fellow in Oxford. Watch for a paper in science by Komintz and Pisias. Cordially, John Imbrie.
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Zeke Hausfather @zekehausfather.com · 12/01/2024
2023 smashed the prior record, becoming the hottest year at between 1.34C and 1.54C above preindustrial levels based on reports from five different monitoring groups. For more details see our massive new State of the Climate report over at @carbonbrief.org: www.carbonbrief.org/state-of-the...
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Gavin Foster @thefosterlab.bsky.social · 12/12/2023
We are recruiting to 3 positions (at Lecturer/Associate Prof level): Applied Geology or Environmental Geoscience jobs.soton.ac.uk/Vacancy.aspx... Coastal Marine Science jobs.soton.ac.uk/Vacancy.aspx... Marine Conservation and Management jobs.soton.ac.uk/Vacancy.aspx... Email me for more info!
A picture of the RRS James Cook docked outside NOCS
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Tom Chalk @chalkyoceans.bsky.social · 08/12/2023
For all your Cenozoic #CO2 plotting needs (at least for now). A super worthy project and an immense task to put all of this together. Great community effort and a nice summary to reference. Importantly, ~all primary authors of the datasets will get a citation! 🧪🔬📚📉 www.science.org/doi/epdf/10....
science.org
Toward a Cenozoic history of atmospheric CO2
Available proxies provide a comprehensive record of atmospheric carbon dioxide concentrations over the Cenozoic.
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Carrie Lear (she/her) @carolinelear.bsky.social · 06/12/2023
If you want to find paleoclimate in the tipping points report head to section 1.5, which is based on this paper: doi.org/10.5194/egus... but I also recommend the more hopeful section 4 of the report on positive tipping points in technology economy and society global-tipping-points.org
global-tipping-points.org
Home - Global Tipping Points
Welcome Global Tipping Points is led by Professor Tim Lenton from the University of Exeter’s Global Systems Institute with the support of more than 200 researchers from over 90 organisations in 26 c...
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James Dyke @jamesgdyke.info · 06/12/2023
“Climate tipping points are nearer than you think – our new report warns of catastrophic risk” David Armstrong-McKay & I provide some thoughts (I have many other thoughts about this, most of them unpublishable). theconversation.com/climate-tipp...?
theconversation.com
Climate tipping points are nearer than you think – our new report warns of catastrophic risk
Coral reefs are already being lost, and four other vital climate systems may tip soon.
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Reposted by Carrie Lear (she/her)
Kate Littler @palaeoclimate.bsky.social · 30/11/2023
🚨NERC GW4+ DTP PhD projects at Dept. Earth & Environmental Sci, Exeter, UK🚨 www.nercgw4plus.ac.uk/apply Including… Rare Earth Elements in carbonatites of Mozambique: www.exeter.ac.uk/study/fundin... Early Jurassic brachiopod geochemistry: www.exeter.ac.uk/study/fundin... #phd #studentship 🧪⚒️
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Ketan Joshi @ketanjoshi.co · 20/11/2023
this is a bloody great name for a climate report www.unep.org/resources/em...
Broken Record
Temperatures hit new highs, yet world fails to cut emissions (again)
UN
environment programme
。
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Zack Labe @zacklabe.com · 20/11/2023
The warming of November temperatures in the Arctic by decade... (yes, it's a lot) Data from cds.climate.copernicus.eu/cdsapp#!/dat...
Four polar stereographic maps showing Arctic near-surface air temperature anomalies for the month of November in 1983-1992, 1993-2002, 2003-2012, and 2013-2022. Most all areas are observing long-term warming, which is largest over the Arctic Ocean.
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Climate Tracker @climate.skyfleet.blue · 13/11/2023
How to Fathom Climate Change's Unfathomable Numbers
bloomberg.com
How to Fathom Climate Change’s Unfathomable Numbers
People in Climate World tend to speak in statistics. But big numbers don’t always resonate, and fall short when it comes to describing humanity.
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Andrea Burke @oceanicandrea.bsky.social · 09/11/2023
Hello Blue Sky! Thread below gives a nice summary of some of my recent work (thanks @mudwaterclimate.bsky.social!). I also have PhD and Postdoc positions to be advertised soon in this field 👩‍🔬🧑‍🔬👨‍🔬 - please encourage anyone interested to get in touch! ⚒️🧊🌋
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Gavin Foster @thefosterlab.bsky.social · 02/11/2023
We are looking for a part-time Laboratory Technician in our Geochemistry Labs at the School of Ocean and Earth Sciences, Southampton. Please DM/email me if you are interested and/or please pass on to other interested parties. Details here: jobs.soton.ac.uk/Vacancy.aspx.... Deadline 29th Nov 2023.
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Katharine Hayhoe @katharinehayhoe.com · 24/10/2023
By the end of September, more than half of the world’s countries could fit inside the land burned this year in Canada. “I can’t think of any analogy for the extent to which the modern records were not only broken but destroyed here,” says climate scientist John Abatzoglou. Read more:
nytimes.com
‘It’s Like Our Country Exploded’: Canada’s Year of Fire
Endless evacuations, unimaginable smoke and heat, 45 million acres burned — is this the nation’s new normal?
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Amelia Shevenell @ashevenell.bsky.social · 24/10/2023
Super cool new paper. Most of the community and funding is focused on West Antarctica. However, East Antarctica holds >19 m of sea level equivalent ice in it’s climatically sensitive marine-based catchments. #glaciology www.nature.com/articles/s41...
nature.com
An ancient river landscape preserved beneath the East Antarctic Ice Sheet - Nature Communications
Using satellite and survey data, an ancient river landscape 300 km wide has been discovered buried and preserved beneath the ice in East Antarctica. It has likely survived largely intact for up to 3...
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Gavin Foster @thefosterlab.bsky.social · 17/10/2023
Do you love forams? do you love lasers? do you love the PETM? Well I have a PhD project for you: noc.ac.uk/gsnocs/proje.... More details here: thefosterlab.org/blog/2023/10.... Please spread the word and pass on to anyone who you think might be interested.
A large grey box that goes ping and a smaller black box that goes pew pew!A live planktic foraminifera.  Image credit: Howie SperoODP Sediment core showing the PETM as a red clay layer
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