Wilson Chan
@wilsonchan.bsky.social
190 followers 310 following 7 posts
Hydroclimatologist UKCEH | PhD Uni Reading | Climate change and hydrological extremes | Views my own 🇭🇰🇬🇧
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Reposted by Wilson Chan
edhawkins.org
The Rainfall Observers

Over the past three centuries, thousands of people across the British & Irish Isles have recorded rainfall, often every day for decades. Here we recognise some of the individuals who made particularly important contributions.

rmets.onlinelibrary.wiley.com/doi/10.1002/...
The rainfall observers
Over the past three centuries, thousands of people across the British and Irish Isles have regularly recorded rainfall, often every day for decades. Their efforts allow us to reconstruct long-term tr...
rmets.onlinelibrary.wiley.com
Reposted by Wilson Chan
steveturner.bsky.social
Heading to IAHS 2025 in Roorkee 🇮🇳? 🌏

I’m co-hosting a side event + giving a talk with the ROBIN Network!

Let’s talk reference hydrological networks, drought indicators & climate change detection!

🧵👇
Reposted by Wilson Chan
Reposted by Wilson Chan
steveturner.bsky.social
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
Reposted by Wilson Chan
ukceh.bsky.social
🌊 Latest UK Hydrological Outlook: Normal to below normal river flows likely in southern & eastern areas over the next 3 months, with low flows for the time of year persisting in some catchments.

River flows in northwestern areas likely shifting towards normal to above normal by November.

🧵🧪 1/
Map of UK with shaded areas showing principal aquifers annotated with information from the September 2025 UK Hydrological Outlook as outlined in the accompanying post.
Reposted by Wilson Chan
ukceh.bsky.social
With exceptionally dry conditions in many parts of the UK this year, hydrologists at UKCEH address the question of whether #globalwarming is increasing severity of #droughts in a guest post for @carbonbrief.org
Reposted by Wilson Chan
Reposted by Wilson Chan
metoffice.gov.uk
Provisional statistics from the Met Office show that summer 2025 will ‘almost certainly’ be the warmest summer on record for the UK.

It would move 2018 off the top spot and relegate 1976 out of the top five warmest summer in a series which dates back to 1884.
👉 www.metoffice.gov.uk/about-us/new...
Photograph of bright sun in a clear blue sky with clouds at the bottom. Text reads: 'Met Office NEWS RELEASE 26 August 2025 – This summer will ‘almost certainly’ be warmest on record for the UK.'
Reposted by Wilson Chan
ukceh.bsky.social
The UK Hydrological Summary confirms heightened risk of drought impacts this summer — especially in eastern Britain.

June was the warmest on record for England and 2nd warmest for the UK overall. Rainfall showed stark regional contrasts, with some areas seeing less than half of average.

🧵🧪 1/
Map of UK showing river flows as percentage of average
Reposted by Wilson Chan
ukceh.bsky.social
What is the hydrological outlook for the UK in the weeks and months ahead? Steve Turner talks us through the likely situation for river flows and groundwater levels.

See the full outlook: hydoutuk.net/latest-outlook

🧵🧪 1/ #WaterResources @steveturner.bsky.social
Reposted by Wilson Chan
vikkithompson.bsky.social
📣 New paper:
💧💧💧 In July 2021 record breaking rainfall hit western Europe, we use ensemble boosting to explore different plausible storylines. These show it could have rained for longer, or over a larger area, or in a different place. Are we prepared?

doi.org/10.1038/s432...
Showing the rainfall of 14th July 2021 (upper left) and 5 alternative scenarios derived from a climate model, conditioned to the atmospheric circulation patterns of the observed event.
Similar to fig.6 of https://www.nature.com/articles/s43247-025-02386-y
Reposted by Wilson Chan
amulyachevuturi.bsky.social
🌊 Streamflow Stripes are here!!! 🌊
Just in time for #ShowYourStripes Day – 21st June 🌍

Our team at @ukceh.bsky.social has created UK river flow stripes to visualise how these have changed over time.

📖 Read more: climatelabbook.substack.com/p/visualisin...

#ClimateChange #Hydrology #DataViz
Visualising climate impacts on UK river flows
Introducing streamflow stripes #ShowYourStripes
climatelabbook.substack.com
Reposted by Wilson Chan
canari-science.bsky.social
CANARI scientists from @ukceh.bsky.social have created UK river flow stripes.

High flows are rising in the north/west and drought risk growing in parts of the south/east. Adaptation is needed to reduce impacts from swings between wet/dry.

🔗 climatelabbook.substack.com/p/visualisin...

(4/4)
Visualising climate impacts on UK river flows
Introducing streamflow stripes #ShowYourStripes
climatelabbook.substack.com
Reposted by Wilson Chan
canari-science.bsky.social
🔊21st June is #showyourstripes day 🌍

2024 was the warmest year on record globally. The stripes help start a conversation about climate change and climate action🥵

Download your warming stripes here:
showyourstripes.info

(1/4)
Reposted by Wilson Chan
edhawkins.org
As we seem to, yet again, be talking about the hot UK summer of 1976, a reminder that the UK is not the world.

Yes, it was hot that summer over our small region, but the bigger picture tells a different story.

And, we've had hotter UK summers since.
Comparing temperature anomalies in summer 1976 and summer 2024
Reposted by Wilson Chan
ukceh.bsky.social
UK Hydrological Summary for May: Recent rainfall brought some respite but summer began with depleted river flows, groundwater levels & reservoir stocks.

Increases risk of further dry weather impacts, with climbing evaporation rates limiting rainfall effectiveness

🔗 nrfa.ceh.ac.uk/sites/defaul...
Two maps of UK indicating river flows for May 2025 and March to May 2025
Reposted by Wilson Chan
amulyachevuturi.bsky.social
North Atlantic Ocean patterns can signal UK summer droughts up to 1.5 years in advance; offering major potential for early drought forecasting.

📢 Published in Nature Communications Earth & Environment! Read it here doi.org/10.1038/s432....

#UKDroughts #Teleconnections #Forecasting
Reposted by Wilson Chan
leohickman.carbonbrief.org
The Telegraph is now having to publish so many corrections to articles where it attempts to find *any angle whatsoever* to attack net-zero polices that it makes sense to start tracking them here.

These are the ones published since Labour won the election.

"We are happy to correct the record."
Reposted by Wilson Chan
ukceh.bsky.social
Thread on new paper by @wilsonchan.bsky.social et al: Climate variability conceals emerging hydrological trends across Great Britain ⬇️
climatecocentre.bsky.social
📢 Excited to share our new paper on how climate variability impacts river flows and drought extremes in the UK!

Short hydrological records and strong variability makes it hard to detect long-term trends. This study using large ensemble climate models shows... (1/3)
Redirecting
doi.org
Reposted by Wilson Chan
ukceh.bsky.social
UK Hydrological Outlook for May-July ☀️🌈

River flows likely to be below normal across most of UK, with potential for current low to exceptionally low flows persisting in some catchments.

Flows in western Scotland and Northern Ireland are likely to be in normal range.

🔗 hydoutuk.net

💧 1/
Map of UK with shaded areas showing principal aquifers. map annotated with notes from the UK Hydrological Outlook