Jamie Hannaford
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jamiehannahydro.bsky.social
Jamie Hannaford
@jamiehannahydro.bsky.social

Hydrologist, UK Centre for Ecology & Hydrology (UKCEH)
Visiting Associate Prof, ICARUS Maynooth, Ireland

Hydrological variability (floods and droughts) past, present and future!

Environmental science 71%
Geography 18%

Reposted by Jamie Hannaford

🌍 Excited to announce our #EGU26 session: Understanding & Predicting the Impact of Climate Variability on Hydrological Regimes and Extremes 💧 (H2.4.12)

🗓️ Abstract deadline: 15 Jan 2026 (13:00 CET)
🔗 More info: meetingorganizer.copernicus.org/EGU26/sessio...

#Hydrology #ClimateVariability #EGU26

Reposted by Jamie Hannaford

🌊 🛰️ Measuring river water flow speed using satellite video imagery - Exciting to see this research from the #FluViSat project featured in a new paper led by @nickeverard.bsky.social 

https://www.nature.com/articles/s41598-025-22413-4 🧪

@natureportfolio.nature.com
Measuring the world’s rivers with videos from Space - Scientific Reports
Scientific Reports - Measuring the world’s rivers with videos from Space
www.nature.com

This is a BIG DEAL!

(excuse the Trumpian capitalisation but I've been a producer & consumer of hydrological datasets over a quarter of a century....how things have come along!)

Both will be great assets to the community. Huge congratulations to the teams involved!
📣 Great news for UK hydrology!

The UK Floods and Droughts Research Infrastructure (FDRI) has announced release of two new datasets: UK-Flow15 and CAMELS-GB v2. They provide access to sub-daily river flow and hydrometeorological data across 100s of UK catchments

🔗 fdri.org.uk/news/new-hyd...

1/ 🧪
📣 Great news for UK hydrology!

The UK Floods and Droughts Research Infrastructure (FDRI) has announced release of two new datasets: UK-Flow15 and CAMELS-GB v2. They provide access to sub-daily river flow and hydrometeorological data across 100s of UK catchments

🔗 fdri.org.uk/news/new-hyd...

1/ 🧪

Reposted by Jamie Hannaford

Most river monitoring focuses on fixed points, missing how pollution moves downstream 🌊

UKCEH’s Alex O’Brien describes an approach combining multiple survey methods to reveal how pollutants mix and travel, which is key for better water quality management.

🔗 www.ceh.ac.uk/news-and-med... 🧪
Tracking river pollution: a novel approach to sampling
River pollution is a major threat to water quality and ecosystems, and understanding pollution sources and how they mix is vital to creating effective pollution management. Alex O’Brien from UKCEH des...
www.ceh.ac.uk

Reposted by Jamie Hannaford

Lunchtime webinar with #FDRI: Large-sample hydrology datasets

🗓️ Wed 22 Oct | 🕐 13:00–14:00

Join UKCEH, Bristol Uni & Environment Agency for updates on new high-res hydrology datasets UKFlows15 & CAMELS-GB v2.

Includes examples of use and a Q&A!

🔗 Sign up: buff.ly/HoDLfyS

#hydrology #data

Reposted by Jamie Hannaford

A team from UKCEH, @metoffice.gov.uk, @uniofeastanglia.bsky.social and @ecmwf.int used satellite observations & advanced modelling to identify and investigate the causes of wildfires from Mar24-Feb25 fire season and the role played by climate & land use change.

🎥 Co-lead Dr Doug Kelley

2/

Reposted by Jamie Hannaford

Ahead of #COP30, a new report outlines:

⚠️ Rapidly approaching Earth system #TippingPoints

💡 Priority interventions via #PositiveTippingPoints

Chapter co-authors include UKCEH's Bryan Spears (2.2) and Chris Huntingford (2.3)

Read the report: global-tipping-points.org/resources-gt...

🧪#GTPR2025
Global Tipping Points | understanding risks & their potential impact
Harmful tipping points in the natural world threaten humanity by disrupting life support systems and societal stability.
global-tipping-points.org
Big Doughnutty News.
Just out in Nature: the all-new 2025 Doughnut. Transformed from a single-year snapshot to an annual global monitor of 21st century social & ecological thriving. Available to all in an open-access paper by @andrewlfanning.bsky.social and me. 🧵 1/
www.nature.com/articles/s41...

Reposted by Jamie Hannaford

Visualising historical changes in air pollution with the Air Quality Stripes

Website: airqualitystripes.info

And paper led by @kirstypringle.bsky.social and @jimmcquaid.bsky.social now published which visualises trends in air quality across many global cities: gc.copernicus.org/articles/8/2...
Visualising historical changes in air pollution with the Air Quality Stripes
Abstract. This paper introduces the Air Quality Stripes, a data visualisation project which presents historical changes in outdoor particulate matter air pollution (PM2.5) concentrations across major ...
gc.copernicus.org

And here in the UK. Hope you are enjoying new water year’s eve!
The possible outcomes for the weather later this week..

Reposted by Jamie Hannaford

Calling all UK users of hydrology - drought to floods, student to retired, research to practice.

Tell us your training needs and help shape the future of UK hydrology.

forms.cloud.microsoft/e/sF8t1YwKnp

Reposted by Jamie Hannaford

Great to see coverage of our first full @wasitusie.bsky.social study on RTE (and elsewhere). Kudos @clairebergin.bsky.social and Lionel swan as well as met Éireann colleagues and thanks as ever to @wwattribution.bsky.social for the hugely valuable collaboration www.rte.ie/news/ireland...
Record temperatures linked to human-caused climate change
New research by climate scientists at Maynooth University in conjunction with Met Éireann has found Ireland's record summer night time temperatures this year were made 40 times more likely by human-ca...
www.rte.ie
In a UN speech today, President Trump said that "all of these [climate] predictions were wrong".

Back in 2019 I led a research effort to digitize old climate model projections and assess how well they did. Turns out they got future warming pretty spot on!

Reposted by Jamie Hannaford

Excited to host a hands-on #IAHS2025 workshop with @sayaliuk.bsky.social & @wilsonchan.bsky.social

🗓️ 6 Oct, 18:00 IST | 📍 Roorkee, India

Explore the ROBIN dataset, drought indicators & FlowScreen.

More info: iahs2025.com/SEROBIN

Register: docs.google.com/forms/d/e/1F...

#ROBINHydro #Hydrology
The people I work with are not stupid people and our climate predictions of 30 years ago of global warming have proved to be accurate. Just saying. www.bbc.co.uk/news/live/cp...

Reposted by Jamie Hannaford

After about one year in review, the dataset paper for the Caravan-GRDC extension was finally published.

See: essd.copernicus.org/articles/17/...

I am so happy that GRDC was open for this effort and made some of their data freely available through Caravan.
GRDC-Caravan: extending Caravan with data from the Global Runoff Data Centre
Abstract. Large-sample datasets are essential in hydrological science to support modelling studies and advance process understanding. Here, we present the GRDC-Caravan dataset, an extension to the lar...
essd.copernicus.org

Reposted by Jamie Hannaford

Just Launched 📢 The WMO’s 2024 State of Global Water Resources Report is now available!

In 2024, the water cycle has become increasingly erratic and extreme, swinging between deluge and drought.

This is the #StateOfWater.

Read the report 🔗 https://bit.ly/469OBWU

That is the only way forward now the seed has been planted.

Excellent. Two other scientists sat with me in a pub - also in.

I’m in, by the way, and ready to part with my cash and I have the very review in mind….

I, for one, think this is genius!!! There’s a startup here, selling bespoke t-shirts to academics with quotes from their most horrorshow reviews

Reposted by Jamie Hannaford

📢 New paper! Events like the winter 2023/24 floods are wetter with higher river flows due to climate change.

A worst-case “storyline” shows flows could be even higher - anticipating UNSEEN extremes is vital for adaptation.

🔗: doi.org/10.1088/1748...

@ukceh.bsky.social @climatecocentre.bsky.social
River flow amplification under climate change: attribution and climate-driven storylines of the winter 2023/24 UK floods - IOPscience
River flow amplification under climate change: attribution and climate-driven storylines of the winter 2023/24 UK floods, Chan, Wilson C H, Barker, Lucy J, Faranda, Davide, Hannaford, Jamie
doi.org
New analysis from @metoffice.gov.uk showing that the record-breaking hot UK summer of 2025 has been made much more likely by human-induced climate change and such a hot summer would be expected about once every 5 years in current climate. www.metoffice.gov.uk/about-us/new...
Summer 2025 is the warmest on record for the UK
Provisional Met Office statistics confirm that summer 2025 is officially the warmest summer on record for the UK.
www.metoffice.gov.uk

Reposted by Jamie Hannaford

A quick read on a wet start to September for the UK and how a hurricane flipped the weather pattern.
liamdutton.substack.com/p/a-wet-star...
A wet start to September for UK
How a hurricane flipped the UK's weather pattern
liamdutton.substack.com

Reposted by Jamie Hannaford

The UK has seen widespread drought this summer.

But to what extent are UK droughts being impacted by climate change?

In a timely piece up on @carbonbrief.org today, @ukceh.bsky.social hydrologists look at whether global warming is making UK droughts worse

www.carbonbrief.org/guest-post-i...
Guest post: Is climate change making UK droughts worse? - Carbon Brief
The year 2025 has seen exceptionally dry conditions in many parts of the UK. At...
www.carbonbrief.org

Reposted by Jamie Hannaford

NEW – Guest post: Is climate change making UK droughts worse?

✍️ Jamie Hannaford, @wilsonchan.bsky.social, Lucy Barker, Stephen Turner

➡️ Read here: buff.ly/boBB8nU
Guest post: Is climate change making UK droughts worse? - Carbon Brief
The year 2025 has seen exceptionally dry conditions in many parts of the UK. At...
buff.ly

Reposted by Jamie Hannaford

Simple answer: high rainfall on average doesn’t mean there isn’t a problem when it stops raining.