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Richard Allan @rpallanuk.bsky.social · 5d

Global #climate hazards @ukhsa.bsky.social 3rd Oct 2025:
🌀 tropical cyclones IMELDA/HUMBERTO affect USA/Bermuda + BUALOI hits Laos, Philippines, Thailand, Vietnam
🌧️ #floods in Algeria, Cambodia, Haiti, Italy, Spain, Nigeria, Ukrain
www.met.reading.ac.uk/~sgs02rpa/ex...

NASA satellite images showing strengthening storm Imelda and Hurricane Humberto over Atlantic

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Richard Allan @rpallanuk.bsky.social · 12d

Global #climate hazards @ukhsa.bsky.social 26 Sep 2025:
🌀 tropical cyclones RAGASA & BUALOI hit south-east Asia
🌧️ #flooding & landslides affect France, Haiti, India, Indonesia, Italy, Nigeria, Pakistan, Spain, Taiwan, Thailand, USA
🔥 #wildfire in Portugal
www.met.reading.ac.uk/~sgs02rpa/ex...

BBC reporter braving RAGASA winds with spray from massive wave shown [source: BBC]

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Richard Allan @rpallanuk.bsky.social · 12d

Higher CO2 levels have been increasing tree size in the Amazon, potentially increasing carbon uptake but this may be short lived as larger trees can be more susceptible to climate change intensified heat & drought:
www.nature.com/articles/s41...

Map with blue up arrows showing where trees are becoming larger over Amazon

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Reposted by Richard Allan

Reading Meteorology @unirdg-met.bsky.social · 13d

The @esa.int WIVERN satellite mission to transform forecasts of hurricanes, thunderstorms & heavy rainfall makes our Prof Anthony Illingworth the 1st scientist with 2 Earth Explorer missions adopted, following launch of EarthCARE satellite in 2024:
www.reading.ac.uk/news/2025/Re...

Severe storm forecasts set to improve with new satellite - University of Reading

www.reading.ac.uk

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Richard Allan @rpallanuk.bsky.social · 13d

Climate change, relentless extraction and damming are pushing the mighty Ganges towards collapse, with consequences for food, water and livelihoods across the region:
theconversation.com/the-ganges-r...

The Ganges River is drying faster than ever – here’s what it means for the region and the world

Climate change and overuse are creating a crisis for south Asia’s most important river.

theconversation.com

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Richard Allan @rpallanuk.bsky.social · 17d

Global #climate hazards @ukhsa.bsky.social 21 Sep 2025:
🌀 Tropical cyclones MITAG & RAGAS affect Philippines, China
💨 storm not-Amy hit UK & France
🌧️ #floods across Gambia, India, Malaysia, Niger, Pakistan, Philippines, South Sudan, USA, Vietnam, Yemen
www.met.reading.ac.uk/~sgs02rpa/ex...

© UNHCR/Tiksa Negeri People displaced by flooding carry children and belongings along a waterlogged road in Bentui, South Sudan.

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Richard Allan @rpallanuk.bsky.social · 23d

Dry, warm conditions persisted over UK in August 2025 with low river flows, groundwater, reservoir levels & soil moisture leading to #drought impacts; wetter September is alleviating surface water deficit but more sustained rainfall needed to replenish deeper supplies:
nrfa.ceh.ac.uk/sites/defaul...

Map showing below average August 2025 rainfall over UK

Map showing low river flows over UK in August 2025

Map showing low groundwater levels over much of the UK in August 2025

Map showing dry soils over parts of UK in August 2025

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Richard Allan @rpallanuk.bsky.social · 26d

Global #climate hazards @ukhsa.bsky.social 12th September 2025:
🌧️ #flooding & landslides affect Gambia, India, Indonesia, Pakistan & Thailand
🌪️ storms hit Japan
🍞 food insecurity for Guatemala, Madagascar, Mozambique, Gaza
🔥 #wildfire in USA
www.met.reading.ac.uk/~sgs02rpa/ex...

People packed onto small boats floating in brown flood waters. The background shows submerged houses and trees. [Getty Images of Pakistan flooding via BBC]

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Richard Allan @rpallanuk.bsky.social · 28d

None of geoengineering ideas to protect polar regions from
climate warming are feasible in coming decades, are potentially dangerous to environment & present distraction from efforts to limit climate change by massively & rapidly cutting greenhouse gas emissions:
www.frontiersin.org/journals/sci...

Frontiers | Safeguarding the polar regions from dangerous geoengineering: a critical assessment of proposed concepts and future prospects

Fossil-fuel burning is heating the planet with catastrophic consequences for its habitability and for the natural world on which our existence depends. Halti...

www.frontiersin.org

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Richard Allan @rpallanuk.bsky.social · Sep 8

Global #climate hazards @ukhsa.bsky.social 8th Sept 2025:
🌀 tropical cyclone TAPAH China, Philippines;
🌧️ #floods & landslides Vietnam, north India, Pakistan, Yemen, South Sudan, Sudan, Nigeria, Mauritania, Sierra Leone, USA;
🌩️storms Italy, Japan
🔥 #wildfire USA
www.met.reading.ac.uk/~sgs02rpa/ex...

People gather after a landslide destroyed Tarseen village in South Darfur, Sudan [© Jebel Marra/Emergency Response Room via UN News].

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Reposted by Richard Allan

Reading Meteorology @unirdg-met.bsky.social · Sep 3

Calling all past Mets!

As we celebrate 100 years of the University of Reading we invite you to take part in our Alumni Centenary Census. Your story is an important part of the University's legacy — and that's why we want to hear from you.

Add your voice today: rdg.ac/censusln

Alumni Centenary Census - University of Reading

If you are a Reading or Henley Business School graduate, celebrate our centenary year with us by taking part in our online census and helping to shape our story.

rdg.ac

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Richard Allan @rpallanuk.bsky.social · Sep 1

The latest @ukhsa.bsky.social global hazards bulletin has been updated up to the 29th August 2025 with links to recent and ongoing #climate extremes: www.met.reading.ac.uk/~sgs02rpa/ex...

Click on date for Public Health England global extremes bulletin, click on year for Roger Brugge's World Weather News. See also Guardian Weather Extremes (latest with back catalogue as far as 2018).

www.met.reading.ac.uk

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Richard Allan @rpallanuk.bsky.social · Aug 31

Foolish, reckless and politically desperate: www.bbc.com/news/article...

Tories pledge to get 'all our oil and gas out of the North Sea'

The government warns Kemi Badenoch's plans would "only accelerate the worsening climate crisis".

www.bbc.com

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Reposted by Richard Allan

Keep Caversham Tidy @cavershamtidy.bsky.social · Aug 16

14 cleared Mill Green, Caversham, collecting 10 large/12 small bags of litter. Cigarette ends continue to disease the tarmac arteries of our streets. Thanks to our @dofe.org volunteers and to Gabi for leading. Find details of further missions on our website:
www.met.reading.ac.uk/~sgs02rpa/KCT/

Litter collected from Mill Green area of Caversham

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Richard Allan @rpallanuk.bsky.social · Aug 15

Global #climate hazards @ukhsa.bsky.social 15th Aug 2025:
🔥 #heatwave & #wildfires grip southern Europe
🌧️ #floods & landslides affect Pakistan, India, China, Japan, Mexico, Cape Verde, Cameroon, Nigeria
🌀 tropical cyclone PODUL hits Taiwan/China
www.met.reading.ac.uk/~sgs02rpa/ex...

Firefighters work to extinguish a wildfire approaching Trancoso, Portugal. REUTERS/Pedro Nunes

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Richard Allan @rpallanuk.bsky.social · Aug 14

Rainfall below average in southwest UK July 2025 with mostly dry soils, declining groundwater/reservoir stocks & low river flows away from northwest + drought affecting East/West Midlands, North-West England & Yorkshire with low river flows expected to persist:
nrfa.ceh.ac.uk/sites/defaul...

map showing dry soils in south west & central south UK, midlands and Yorkshire in July 2025

map showing low groundwater in many parts of UK in July 2025

map showing very low river flows in the UK during July 2025 apart from over the northwest

map showing below average rainfall in southwest of UK in July 2025

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Reposted by Richard Allan

Keep Caversham Tidy @cavershamtidy.bsky.social · Aug 9

Our tenacious ten (plus photo muggins) unlittered Lower Caversham, collecting 8 large/13 small bags, N2O canisters and reported flytipping. Thanks to our @dofe.org volunteer. Find out more about our group online!
www.met.reading.ac.uk/~sgs02rpa/KCT/

Graham checks how many we lost this week

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Richard Allan @rpallanuk.bsky.social · Aug 8

Global #climate hazards @ukhsa.bsky.social:
🌡️ heatwave multiple regions
🔥 wildfires Canada, USA, France, Portugal
🌧️ floods/landslides Australia, China, Taiwan, India,Laos,Myanmar,Vietnam,S Korea,Japan,USA
⛈️storms Ethiopia, Italy
💨duststorm Peru
🥀drought Somalia
www.met.reading.ac.uk/~sgs02rpa/ex...

People load their car and prepare to evacuate their house near a growing wildfire in Squamish, British Columbia, Canada, on June 9, 2025 [Jesse Winter/Reuters]

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Reposted by Richard Allan

John Kennedy @micefearboggis.bsky.social · Aug 4

Nothing ever changes but the climate

Some initial notes on the DOE Critical Review of Impact of Greenhouse Gas Emissions on the US Climate

And a 🧵 of other responses I'm aware of (let me know if you know of others)

diagrammonkey.wordpress.com/2025/08/01/n...

1/n

Nothing every changes but the climate

When I became a climate scientist nearly 22 years ago, I started accumulating books on the subject. One of the first was called something1 like “Global Warming: Apocalypse or Hot Air?” …

diagrammonkey.wordpress.com

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Richard Allan @rpallanuk.bsky.social · Jul 30

Also I’m not sure about their use of the word “sputtering”! 😄

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Richard Allan @rpallanuk.bsky.social · Jul 30

True for the drying region I guess while the total non frozen component in all regions (left plus right bar) is much smaller than the GIC

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Richard Allan @rpallanuk.bsky.social · Jul 30

Nice to see @metoffice.gov.uk and BBC making friends again!

Met Office - weather and climate @metoffice.gov.uk · Jul 30

📰 Groundbreaking new partnership to deliver a world class public weather service announced

Read our news release 👇

www.metoffice.gov.uk/about-us/new...

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Richard Allan @rpallanuk.bsky.social · Jul 30

This builds on earlier studies identifying continental drying. Although contribution to sea level from terrestrial water storage decline ramps up (their Fig 4A) this may be dominated by melting of ice since contribution from liquid water is stable since 2015 (Rodell Fig1): doi.org/10.1007/s107...

Figure 4 of Chandanpurkar showing increasing sea level rise from terrestrial water storage decline

Figure 1 of Rodell et al showing abrupt drop of non frozen terrestrial water storage in 2015 and stable or rising since

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Richard Allan @rpallanuk.bsky.social · Jul 29

Unprecedented continental drying since 2002 based on satellite data and dominated by high-latitude water losses, intense Central American/European #drought & groundwater depletion: doi.org/10.1126/scia...
Consistent with earlier work: doi.org/10.1007/s107...

Unprecedented continental drying, shrinking freshwater availability, and increasing land contributions to sea level rise

Drying continents, extreme drought, and groundwater depletion are shrinking water availability and increasing sea level rise.

doi.org

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Richard Allan @rpallanuk.bsky.social · Jul 28

Carbon uptake diminished in 2024 as decomposition in hot, wet conditions sped up, based on a preprint by Jiang et al. (www.researchsquare.com/article/rs-6...), leading to record annual growth rates in atmospheric CO2 as seen in the @climate.noaa.gov data: www.met.reading.ac.uk/~sgs02rpa/co...

CO2 levels and annuakl increases from the NOAA Mauna Loa observatory

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