Mat Collins

During 2002-22, the Antarctic lower stratosphere cooled, a sign of decreasing ozone. A new study showed that this cooling was driven by a slowdown of the atmospheric motion that transports ozone poleward. Removing this effect showed a continued healing of the ozone layer. 🌊🧪👍 doi.org/10.1029/2025...

[Science Highlights] Greenhouse Gases and Aerosols Together Shape a pIOD-like Warming Pattern in the Indian Ocean

Take a look at a new paper published in Climate Dynamics by CLIVAR members: Lu Dong, Fengfei Song, Bolan Gan and Agus Santoso, director of the ICPO.

Find out more: shorturl.at/VBGGt

The 2023/24 El Niño event exhibited unusually weak extratropical teleconnections - Communications Earth & Environment Extreme sea surface temperature warming in the tropical Indian Ocean and Atlantic in 2023 suppressed the rainfall pattern induced by the 2023/24 El Niño, reducing its tropical and extra-tropical impac...

Big El Niños 🌊 usually come with big 🌎 teleconnections.
The one in 2023/24 didn't. Why?
Rainfall anomalies in the tropical Pacific were suppressed due to greater warming in Indian and Atlantic Oceans.
www.nature.com/articles/s43...
Led by Lei Zhang, with @matcollins.bsky.social
@cires.colorado.edu

Job alert: we are looking for a postdoc to join the Atmospheric Dynamics group in Oxford to study Arctic atmospheric dynamics. The focus is on energy transfers between scales and implications for predictability. More details here: tinyurl.com/yc6h4b35

The 2023-24 El Nino, despite being ranked the 4th strongest since 1979, exhibited an unusually weak teleconnection pattern. A new study showed that warm tropical Indian & Atlantic suppressed tropical Pacific rainfall response to El Nino, and thus was mainly responsible: 🌊🧪 doi.org/10.1038/s432...

Are you still exploring your options for university this year? We have some places available via clearing, so take a look at our website to find out more and apply: www.exeter.ac.uk/study/cleari...

New paper! Zhang et al., The 2023/24 El Niño event exhibited unusually weak extratropical teleconnections. We show that this was due to warm SSTs in both the tropical Indian and Atlantic basins. www.nature.com/articles/s43...

Remembering Prof. Sulochana Gadgil: A Personal Tribute I just heard the heartbreaking news that Prof. Sulochana Gadgil is no more. It feels like a deeply personal loss. Her name is well known in the world of climate science—an acclaimed monsoon meteoro…

Prof. Sulochana Gadgil is no more. diptivk.wordpress.com/2025/07/25/r...

Extreme weather and indoor environm | University of Exeter Climate change leads to more extreme weather in the UK and triggers public health responses.

Join Us !
🌪️🌡️🌧️ A new fully funded PhD (Ref: 5569) supported by @exeter.ac.uk and @metoffice.gov.uk is uncovering just that—exploring how heatwaves, storms, and more shape life indoors, especially for those in social housing.
👉 Apply now: www.exeter.ac.uk/study/fundin...

Standard campus wildlife shots @exeter.ac.uk

Balancing accuracy versus precision: Enhancing the usability of sub-seasonal forecasts Forecasts are essential for climate adaptation and preparedness, such as in early warning systems and impact models. A key limitation to their practic…

www.sciencedirect.com/science/arti...
In this new paper we describe the trade off between forecast precision and accuracy. The smaller the location you are considering, the lower your forecast accuracy and to get acceptable accuracy we need to increase the spatial scale, the longer we try to predict

It was great to give an overview of my research so far at the RMetS Early Career conference earlier today! And great to hear about the variety of other research from early career scientists in the field.

Second year Maths PhD student Charlie Wilson gives his thoughts and reflections on the British Mathematical Colloquium and British Applied Mathematics Colloquium, held at @exeter.ac.uk this week.

Home - Net Positive Centre At the Net Positive Centre, we focus on what’s possible — turning the climate challenge into an opportunity to support healthier lives and to improve the environment. Climate change is an urgent healt...

📢 The Net Positive Centre website is live! 🌍Focused on advancing climate-health research & real-world solutions — from urban design to food systems.Funded by @UKRI_News led by a partnership @exeter.ac.uk @ukhsa.bsky.social @nationaltrust.org.uk @forestresearchuk.bsky.social
netpositivecentre.com

We're delighted to share that 2 of our climate researchers have been honoured in the King’s Birthday List! Prof @coxypm.bsky.social‬ has been appointed CBE for services to science & climate modelling. Prof Tim Lenton has been appointed OBE for services to understanding climate tipping points.
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May 2025 breaks an unprecedented long sequence of months over 1.5ºC above pre-industrial

🌡️ May 2025 was the second warmest May globally

📈 May 2025 was 1.40°C above the estimated 1850-1900 average

🌊 SSTs were the 2nd highest on record for May, with an extreme marine heatwave in the North Atlantic

We have some great news this morning - the University of Exeter is now ranked 11th in the UK in the 2026 Complete University Guide league table! www.thecompleteunive...

Unprecedented heat in the North Atlantic Ocean kickstarted Europe’s hellish 2023 summer. Now we know what caused it Parts of the Atlantic Ocean are again much warmer than normal, priming Europe for more extreme heat this summer.

Unprecedented heat in the North Atlantic Ocean kickstarted Europe’s hellish 2023 summer. Now we know what caused it
theconversation.com/unprecedente...

This is not the actual cover of Nature, just shown here for illustrative purposes. We did submit this figure for consideration for their cover. Print run in two weeks, we'll know by then if it gets used.

Out today in Nature, our paper on the drivers of the record 2023 summer heating of the North Atlantic. Temperatures warmed to record levels in just a few months. The impacts on climate & ecosystems were severe. A thread on how this work came about and what we found.👇👇🧵 www.nature.com/articles/s41...

Please consider submitting an abstract to the session on 'Understanding reactive gases, aerosols, and land use for air quality and climate change' convened by Fiona O'Connor, @dwatsonparris.bsky.social, Stephanie Fiedler, @flossie-brown.bsky.social and me! Deadline August 13th.

I am co-convening the very broad topic of
🌏 "Persistent Biases in Climate Model Performance: Insights from CMIP5 to CMIP6" 🌍
with Sabine Bischof, Robert Fajber, Sifan Koriche and Ankur Srivastava.

Please share and consider submitting an abstract by the deadline 13th August.

Come work with us! Applications are currently open for this 4-year position in Reading, closing next week.

Frontiers | Climate science for 2050 Knowledge of the functioning of the climate system, including the physical, dynamical and biogeochemical feedback processes expected to occur in response to ...

"Climate science for 2050" | I joined w/ a list of leading climate experts for this review in #FrontiersInClimate:
www.frontiersin.org/journals/cli...

Risks of unavoidable impacts on forests at 1.5 °C with and without overshoot - Nature Climate Change The authors assess the risk of overshoot beyond 1.5 °C warming, using three scenarios with minimal overshoot, brief overshoot and sustained overshoot. They show a risk of long-term Amazon dieback, whi...

New Nature Climate Change paper on the risks of irreversible impacts on forest ecosystems under emissions pathways designed to meet the Paris Agreement temperature goals 🌳

➡️ www.nature.com/articles/s41558-025-02327-9

💡 A group of students from the ICTP/CLIVAR Summer School on Marine Heatwaves: Global Phenomena with Regional Impacts just released a paper on BAMS!

📎 Check out here! doi.org/10.1175/BAMS...

Published today in the @ametsoc.org Journal of Climate, my rather long paper shows that the average upwelling in the equatorial Pacific is 13.1 ± 6.9 meters per day. This is much faster than historical estimates and the latest generation of global climate models.
journals.ametsoc.org/view/journal...

UK to host key climate gathering The Met Office and the University of Exeter will host scientists, policy makers and business leaders for vital talks assessing growing risks from climate change – and action to address it. Even as sci...

We're delighted to be joining the @metoffice.bsky.social to host scientists, policy makers and business leaders at a conference this summer for vital talks assessing growing risks from #ClimateChange and action to address it. Find out more and book your place: news.exeter.ac.uk/global-syste...

Two papers from his thesis - agupubs.onlinelibrary.wiley.com/doi/10.1029/... and www.nature.com/articles/s41.... One more to come.

Congratulations to @weitengq.bsky.social who passed his PhD viva today! Examiners Amanda Maycock and Jen Catto. Supervisors; me, Adam Scaife and Agus Santoso @exeter.ac.uk

Abstract submission now open for the UK National Climate Impacts meeting. Climate and health focus on one day, and a general impacts/risks focus on the other. We would love to see you. @eunicelo.bsky.social @richardabetts.bsky.social @hayleyjfowler.bsky.social www.climatebristol.org/projects/nci...