Gerard McCarthy

Atlantic Multidecadal Variability since 1850 is largely externally forced Abstract. Whether observed Atlantic Multidecadal variability (AMV) is truly an intrinsic internal mode of climate variability or an externally forced response remains contentious, with conflicting lit...

First paper led by our @climatecocentre.bsky.social PhD student Yongyao has gone to open review. Blown away that after just 12 months she has a first paper submitted. egusphere.copernicus.org/preprints/20... @edhawkins.org @germac.bsky.social

A person in a yellow waterproof jacket holds a vertical rope densely covered with mussels, suspended over a misty body of water. Multiple mussel-covered ropes hang nearby, indicating a mussel farming operation. The foggy background reveals a distant shoreline, suggesting a coastal aquaculture setting.

🦤🌐🧪
Irish blue mussels have declined over 30 years with changing sea surface temperatures and cold periods affecting health. Reduced tissue weight and higher moisture dominate, while higher local chlorophyll helps mussels thrive.
bit.ly/meps15054
@germac.bsky.social
@samantha-hallam.bsky.social

I promise it wasn't I gave it the 1 star review:

Collapse of this Atlantic current could change Europe's climate forever YouTube video by Channel 4 News

Great Channel 4 News report on the latest #AMOC monitoring.
"Trouble is: there is now growing scientific consensus that the AMOC is weakening."
@noc.ac.uk
youtu.be/JpOpsMOBsL4?...

Amazing! Well done

Rainfall accumulation caused Chandra flooding - study A rapid study of Storm Chandra by climate scientists has found it was the accumulation of rainfall over seven days, including on the day of the storm, rather than the amount of rainfall during the sto...

Great, incredibly fast work here from the WasItUs team at ICARUS Maynooth @clairebergin.bsky.social and @lionel-swan.bsky.social looking at flooding from storm Chandra.
www.rte.ie/news/environ...

🌊📊 Developing reliable #ocean #indicators is essential to guide global action and protect the ocean's future.
🤝 A new study lays the groundwork for a global framework of ocean indicators, connecting #science to #policy and action. Open access here: www.sciencedirect.com/science/arti...

Today is 2025-12-14, the sun sets at 16:05:45 and the grand auld stretch tonight was 00 mins and 02 secs. #GrandStretch #TheGrandStretchIsBack

Today is 2025-12-12, the sun sets at 16:05:44 and the grand auld stretch tonight was 00 mins and 1 sec. #GrandStretch #GrandDrawingIn

Collage of prints from my site #SpéirGorm #SpéirGhorm #Ireland

One of the handwritten gift notes that I can include for free with all orders, if desired.

First year selling my art at Christmas without the Other site, where most of my sales came from, as well as losing US orders to new tariffs, so it'll be a tough one - I put huge work into every order, so even if you can't buy, shares help get them in front of eyes. GRMA! www.ciaraioch.com/artprints

“I am so bored by AI. One of the things I love about the theatre is AI can’t do it.”

Ethan Hawke is a dude 👌🏻

John Gibbons: A big freeze could turn the Irish into climate refugees We should reflect on 'get-tough' proposals on immigration: If the Amoc currents that moderate Ireland’s climate fail, temperatures will plunge, making grass-based agriculture impossible

Interesting piece from @thinkorswim.bsky.social on AMOC collapse and its potential implications for Ireland. Not sure about the headline but big AMOC change would certainly be transformative for Ireland www.irishexaminer.com/opinion/comm...

#cop30 #amoc #climatescience #oceancirculation #jpioceans #jpiclimate | JPI Oceans Meet the Co-Chairs Leading AMOC in Focus Introducting Hans Pörtner and Gerard McCarthy as the Co-Chairs of the newly launched Atlantic Meridional Overturning Circulation (AMOC) Knowledge Report ini...

Meet the Co-Chairs Leading AMOC in Focus

Introducing Hans Pörtner and Gerard McCarthy as the Co-Chairs of the newly launched Atlantic Meridional Overturning Circulation (AMOC) Report—AMOC in Focus, a joint assessment by JPI Climate and JPI Oceans.

www.linkedin.com/posts/jpi-oc...

I've heard this was very good—do you have a way to look back at this?

You’ve been kidnapped. The characters from the last TV show you watched are trying to rescue you. Who’s coming to save you?

An image of Taghmon Church from Wikipedia <a href="https://commons.wikimedia.org/wiki/File:Taghmon_Church-_St._Munnas_Church,_County_Westmeath.JPG">Image</a> licensed under <a href="https://creativecommons.org/licenses/by-sa/4.0" >CC BY-SA 4.0</a? by <a href="//commons.wikimedia.org/w/index.php?title=User:Bridget_Neville&amp;action=edit&amp;redlink=1" class="new" title="User:Bridget Neville (page does not exist)">Bridget Neville</a>

An image of Taghmon Church from Wikipedia <a href="https://commons.wikimedia.org/wiki/File:Taghmon_Church-_St._Munnas_Church,_County_Westmeath.JPG">Image</a> licensed under <a href="https://creativecommons.org/licenses/by-sa/4.0" >CC BY-SA 4.0</a? by <a href="//commons.wikimedia.org/w/index.php?title=User:Bridget_Neville&amp;action=edit&amp;redlink=1" class="new" title="User:Bridget Neville (page does not exist)">Bridget Neville</a>

A partially zoomed out map with a pin at the position of St Munna's Church, L1618, County Westmeath, Ireland

A zoomed in map showing a pin at the position of St Munna's Church, L1618, County Westmeath, Ireland

🇮🇪 - St Munna's Church, L1618, County Westmeath, Ireland

#Ireland
#StepByStep 👣
#PlacesOfWorship
Want to visit? 🔁
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Delira do Becky Ní Éallaithe as ucht Steip 2025 a bhuachaint. About time!

#Áras25

I'm reading the Parable of the Talents at the moment and having lots of 'did I read that in the book or in the news?' moments.

We were all brought together under iCRAG—the Research Ireland Centre for Applied Geosciences (www.icrag-centre.org). It was nice writing with a multidisciplinary group like this.

Is the Atlantic ocean's "wobble" a warning for Ireland? The Atlantic between Ireland and Canada, which gives us our mild climate, is behaving strangely and is the only location on the earth's surface that has cooled

What is going on with the AMOC - the system of ocean currents that gives Ireland its mild and wet climate? With a number of iCRAG colleagues we wrote a short piece for @rtebrainstorm.bsky.social ➡️

www.rte.ie/brainstorm/2...

Is the Atlantic ocean's "wobble" a warning for Ireland? The Atlantic between Ireland and Canada, which gives us our mild climate, is behaving strangely and is the only location on the earth's surface that has cooled

Up on RTÉ Brainstorm now, together with colleagues Audrey Morley, @tomasbuitendijk.bsky.social, Chris Bean, an article we wrote on the AMOC (gulfstreamsystem, as Joyce would have said) that spans social science, current and past climates and emerging observing: www.rte.ie/brainstorm/2...

Yay! feel very conflicted about what I want from that storm now. Devastation is obviously bad but don't want it to be a woos either.

That would be really interesting. Somebody must have done experiments on Atlantic circulation with the Med open and closed too I guess. It's an important question to know how much extra deep warming in the Atlantic is due to AMOC and has implications for GMST

Definitely thinking of your work @janzika.bsky.social when thinking of ocean vertical heat transport.

I often come back to the Atlantic being warmer than the Pacific at depth. At shallower depths, it seems obvious that the warm water is coming from the Med. But also the vertical heat transport due to overturning processes needs to be remembered. Anyone know of study partitioning those two processes?

sounds sketchy!

Nice to see a bit of life going back in there. It was a shell a long time. I presume it will be a pub again, thinking about it now, it would make an excellent escape room. The heat could be a feature rather than a bug.

God I'm having flashbacks of sweating in there after All-Irelands past.

The butterflies are flying it at the moment. clockwise from top (afaik at least!): red admiral, dragonfly, small tortoiseshell, holly blue (back of wings), grasshopper. From a blackberry picking session on the Old Rail Trail on Saturday.