Lightnews — Scholar-powered news

Reposted by Natassa Romanou

AGU (American Geophysical Union) @agu.org · 8d

We honor the life and legacy of Dr. Jane Goodall, the pioneering conservationist, champion for wildlife, and unwavering voice for the planet.

This photo from our 2021 Annual Meeting honored her extraordinary impact. Her legacy will continue to inspire.

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Natassa Romanou @aromanou.bsky.social · 12d

That’s why cinnamon-raisin are preferred.

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Dr. Aaron Thierry @thierryaaron.bsky.social · 15d

“To be a good scientist, I have to take emotions out of work. Still, I would say looking at this data, when I allow myself to connect to it emotionally, then I am afraid. This really scares me”

- Dr. Levke Caesar, co-lead of Planetary Boundaries Science Lab

World’s oceans fail key health check as acidity crosses critical threshold for marine life

Scientists call for renewed global effort to curb fossil fuels as seven of nine planetary boundaries now transgressed

www.theguardian.com

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PAGES ECN (PAGES Early-Career Network) @pages-ecn.bsky.social · 15d

Apply now to be an IPCC (Intergovernmental Panel on Climate Change) AR7 (Seventh Assessment Report) Chapter Scientist and contribute directly to the global climate change assessment

🗓 Deadline: 18 October 2025

🔗 Apply here: www.ictp.it/opportunity/...

#IPCC #ClimateScience #EarlyCareerResearchers

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PIK_climate @pik-potsdam.bsky.social · 16d

Seven of nine planetary boundaries now breached – ocean acidification joins the danger zone," says PIK director Johan Rockström presenting the key findings of the Planetary Health Check 2025 today. #PlanetaryBoundaries
➡️ www.pik-potsdam.de/en/news/late...

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UN Environment Programme @unep.org · 20d

History made for the ocean: #BBNJ Agreement enters into force, protecting high seas & deep seabed, safeguarding life under water.

“Our ocean is the foundation of our very existence. Today we took an important step forward to save our ocean, & to save our future” - ED @ingerandersen.bsky.social

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Carl Schleussner @carlschleussner.bsky.social · 20d

In time for the weekend. Episode 6 🎧 Jonathan Donges from @pik-potsdam.bsky.social speaks about
Overshoot Legacy and Tipping Elements. Don't miss it 👇👇👇
overshootconference.org/the-overshoo...
and here:
open.spotify.com/episode/11F3...

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Shannon Osaka @shannonosaka.bsky.social · 22d

It's not your imagination: Wildfire smoke in the U.S. has dramatically worsened since 2019. According to a new study, it's already killing 41,000 people a year - and it's poised to get much worse.

new from me @johnmuyskens.bsky.social and @sadbumblebee.buzz

www.washingtonpost.com/climate-envi...

Record wildfire smoke kills more people each year than car crashes. It’s about to get worse.

The past six summers have been the smokiest on record. New research shows that smoke could become the costliest consequence of climate change for Americans.

www.washingtonpost.com

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Adam Sobel @adamsobel.bsky.social · 24d

We're hiring! We have an open search for an Assistant Professor in physics of the ocean and/or atmosphere in Columbia's Dept. of Earth and Environmental Sciences. Please circulate this information to good candidates, and apply yourself if you are one! Ad & link to apply: apply.interfolio.com/173819

Apply - Interfolio {{$ctrl.$state.data.pageTitle}} - Apply - Interfolio

apply.interfolio.com

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Toastie @btoastie.bsky.social · 24d

RIP GOAT

Be like Robert. Support badass journalism.

1970s black and white photo of Robert Redford leaning against a brick wall wearing sunglasses and reading High Country News magazine.

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Eos @eos.org · 24d

It can take decades, or even millennia, for Earth’s temperature to reach equilibrium when faced with rising carbon dioxide levels. New research looks to the past to make estimates of future warming patterns.

Paleoclimate Patterns Offer Hints About Future Warming - Eos

A new study examines 10 million years of sea surface temperature data to offer predictions about how future warming may unfold.

eos.org

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Abigail Swann, PhD @ecoclimatelab.bsky.social · 24d

Maybe the land carbon sink is weaker than we thought. Big implications: "A lower-than-expected land carbon sink would also imply that the land biosphere may be closer to transitioning from a net carbon sink to a net source than current models predict" Randerson et al. www.science.org/doi/10.1126/...

The weak land carbon sink hypothesis

Satellite-derived time series of vegetation carbon do not support a strong Northern Hemisphere net land carbon sink.

www.science.org

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ClimateBook @climatebook.bsky.social · 24d

The land carbon sink, and what happens to it in a warming world, is one of the "known unknowns" I worry about most. At some point, it could start adding a significant amount of additional carbon to the carbon we release by burning fossil fuels.

Abigail Swann, PhD @ecoclimatelab.bsky.social · 24d

Maybe the land carbon sink is weaker than we thought. Big implications: "A lower-than-expected land carbon sink would also imply that the land biosphere may be closer to transitioning from a net carbon sink to a net source than current models predict" Randerson et al. www.science.org/doi/10.1126/...

The weak land carbon sink hypothesis

Satellite-derived time series of vegetation carbon do not support a strong Northern Hemisphere net land carbon sink.

www.science.org

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Alaa Al Khourdajie @dralaaclimate.bsky.social · 25d

🔬 New paper alert: "The role of artificial intelligence in climate change scientific assessments" @plosclimate.org

As #AI adoption accelerates, should @ipcc.bsky.social integrate these tools? Can LLMs (chatbots) communicate findings while maintaining scientific rigour?

doi.org/10.1371/jour...
1/9

The role of artificial intelligence in climate change scientific assessments

Climate change scientific assessments prepared by the Intergovernmental Panel on Climate Change (IPCC) face interconnected dual challenges: the exponential growth of literature, hindering synthesis ef...

doi.org

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Andrew Dessler @andrewdessler.com · 26d

New climate risk seminar series.

Info on the seminar series: risk-seminar.ryanmcgranaghan.com

Register here: docs.google.com/forms/d/1KUw...

TL;DR: We’re launching a biweekly virtual seminar series (Sept–Dec 2025, starting Sept 16) on Complex Risk Science—an emerging field at the intersection of complexity, resilience, and risk. The goal is to convene a plural, multi-institutional community to explore today’s interconnected risks and spark new collaborations. Register here to receive calendar invites and join our Slack space for ongoing conversations.

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Alan McElligott @amcell.bsky.social · 28d

2025. ‘Communities already have the solutions’: why I advocate for Indigenous knowledge. Environmental scientist and global advocate Jessica Hernandez works to secure women’s rights and to integrate Indigenous science into environmental policy. www.nature.com/articles/d41...

‘Communities already have the solutions’: why I advocate for Indigenous knowledge

Environmental scientist and global advocate Jessica Hernandez works to secure women’s rights and to integrate Indigenous science into environmental policy.

www.nature.com

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umsonst.bsky.social @umsonst.bsky.social · 29d

We trigger a non-linear amplification spiral now...

"Between 2000–2009, heatwaves became about 20 times more likely, and during 2010–2019, about 200 times more likely."

"Climate change has increased the intensity by 1.4 °C over 2000–2009, 1.7 °C over 2010–2019 and 2.2 °C over 2020–2023."

#climate

"Systematic attribution of heatwaves to the emissions of carbon majors"; https://www.nature.com/articles/s41586-025-09450-9#Fig3

Heatwaves intensify fast the most recent decade and then again during 2020-2023.

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Surface Ocean CO₂ Atlas @socatco2.bsky.social · 29d

C. Frangoulis et al.* present two years of high-frequency carbonate system observations from the eastern Mediterranean.

doi.org/10.3389/fmar...

#ocean #mediterranean #carbon

Stamataki, Pettas, Michelinakis, King, Giannoudi, Tsiaras, Christodoulaki, Seppälä, Thyssen, Borges, Krasakopoulou

Figure 1: Map of the Eastern Mediterranean Sea with location of Heraklion Coastal Buoy (HCB), E1-M3A buoy and FINOKALIA atmospheric station (bottom left inset). Color tracks (z axis) indicated difference between observed and estimated sea surface pCO₂ (Δobs-est), using Equation 8 with in-situ temperature and pCO₂ measurements (from SOCAT dataset). Top right inset shows frequency of observations vs Δobs-est. In-situ data excluded values above latitude 39.8°N and data from the present study.

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Dr. Wendy Bohon @drwendyrocks.bsky.social · Sep 6

👏👏👏 👏👏

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Natassa Romanou @aromanou.bsky.social · Sep 3

open.substack.com/pub/drtomhar...

Earth's Energy Imbalance - half year update

The NASA CERES satellite data is now available up to June, so at this half year point, its a good time to look at the recent trends and warming drivers.

open.substack.com

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Natassa Romanou @aromanou.bsky.social · Sep 2

I am incredibly excited to share that I'll be a Coordinating Lead Author for the #IPCC's #AR7, serving on Working Group-I, Chapter 8 on #TippingPoints. For the first time, TPs have a dedicated chapter. Fellow CLAs are @froeltho.bsky.social and @Sipra Jain. Looking forward to the work ahead!

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Natassa Romanou @aromanou.bsky.social · Aug 27

Important point: we need climate models running in semi-operational mode. Which means we need faster up-to-date forcings. www.nature.com/articles/d41...

Climate models need more frequent releases of input data — here’s how to do it

Annual updates to ‘climate forcing’ data sets would allow simulations to keep pace as global warming accelerates.

www.nature.com

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Femke de Jong @fmkdejong.bsky.social · Aug 20

Advertising this PhD student position once more (deadline 30 August) workingat.nioz.nl/o/phd-positi...

We are looking for someone with a MSc in physical oceanography, fluid dynamics or physics to study how ocean eddies contribute to the Atlantic Meridional Overturning Circulation

NIOZ - PhD-position "Overturning the ocean''

The department of Ocean Systems (OCS) at the Royal Netherlands Institute of Sea Research (NIOZ) is looking for an enthusiastic and motivated PhD candidate to work on the exchange of lighter and denser

workingat.nioz.nl

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IPCC @ipcc.bsky.social · Aug 18

The #IPCC has announced the authors selected for its Seventh Assessment Report.

664 experts from 111 countries have been invited to participate as Coordinating Lead Authors, Lead Authors, & Review Editors.

🌍 51% from developing countries
🚺 46% women

🔗 bit.ly/AR7AuthorsPR

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World Climate Research Programme (WCRP) @wcrpclimate.bsky.social · Aug 15

🌍 WCRP–IPCC Co-sponsored Workshop:

WCRP and IPCC will bring together leading global experts to address urgent questions on high-impact climate events, tipping points, and their consequences.

26–28 November 2025, Paris, France.

More info: https://loom.ly/Jsti1vI
By invitation only

#IPCC #WCRP

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