Richard Allan
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rpallanuk.bsky.social
Richard Allan
@rpallanuk.bsky.social
2K followers 990 following 180 posts
Professor of climate science at the University of Reading: http://www.met.reading.ac.uk/~sgs02rpa/
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rpallanuk.bsky.social
Global #climate hazards @ukhsa.bsky.social 21 Nov 2025:
⛈️ storms hit Chile/Argentina, Portugal & UK
🌧️ #floods & landslides affect Italy/Slovenia, France, Republic of the Congo, Thailand, Vietnam, Indonesia, USA
www.met.reading.ac.uk/~sgs02rpa/ex...
In this photo released by the Indonesian National Search and Rescue Agency (BASARNAS) on Monday, Nov. 17, 2025, rescuers recover a victim of a landslide in Cilacap, Indonesia. (BASARNAS via AP)
November 21, 2025 at 5:01 PM
rpallanuk.bsky.social
Daily extreme precipitation over land increases ~40% by 2100 in high resolution single model ensemble under high greenhouse gas emissions scenario with over half driven by enhanced mesoscale convergence that's underestimated by factor of 3 in low-resolution simulations:
doi.org/10.1038/s415...
Future extreme precipitation amplified by intensified mesoscale moisture convergence - Nature Geoscience
Extreme daily precipitation events over land could increase by about 41% by 2100 under a high-emissions scenario with an increase in mesoscale moisture convergence, according to an ensemble of climate...
doi.org
November 21, 2025 at 10:57 AM
rpallanuk.bsky.social
As well as protecting health, China’s efforts at cleaning up aerosol particle pollution has restored sunlight to Pacific Ocean, once robbed by the haze that was artificially brightening clouds, which unfortunately adds to warming - @uk.theconversation.com podcast:
theconversation.com/how-china-cl...
How China cleaned up its air pollution – and what that meant for the climate
Atmospheric scientist Laura Wilcox talks to The Conversation Weekly about the measures China took to improve its air pollution – and the unintended consequences for the climate.
theconversation.com
November 21, 2025 at 9:13 AM
rpallanuk.bsky.social
As well as rapidly cutting CO2 emissions, tackling short-lived warming agents like methane & surface ozone pollution boosts action to limit #climate warming + counteracts warming from cleaning our air of harmful aerosol particles that have robbed us of sunlight: theconversation.com/the-fast-fix...
The fast-fix for global warming that the UN climate summit can’t ignore
Removing so-called ‘short-lived climate pollutants’ from the atmosphere could reduce global warming – fast.
theconversation.com
November 19, 2025 at 11:59 AM
rpallanuk.bsky.social
Our heat pump doing it’s job taking in cold air, extracting energy to heat our house and exhaling even colder air that has kept the dusting of snow happy in its artificial frost hollow long after it had melted away elsewhere!
Frost hollow created by heat pump
November 19, 2025 at 11:42 AM
rpallanuk.bsky.social
October 2025 quite dry in UK apart from N Ireland/west Scotland/Kent with below average river flows in east & depleted groundwater/reservoirs but wetter soils with low groundwater-fed river flows expected to continue despite early November deluges - @ceh.org summary:
nrfa.ceh.ac.uk/sites/defaul...
map showing normal soil moisture in UK in October 2025 map showing very low groundwater in many UK aquifers in October 2025 map showing above average river flows in north west UK and below average in south and east in October 2025 map showing below average rainfall in October 2025 in most of UK
November 17, 2025 at 5:19 PM
rpallanuk.bsky.social
Global #climate hazards @ukhsa.bsky.social 14 Nov 2025:
🌀 tropical cyclones affect Philippines, Taiwan, Japan
⛈️ storms hit Brazil, Portugal, Spain, Burundi
🌧️ landslides #floods DR Congo, Pakistan, Thailand, Indonesia
🏭 smog Delhi/India
🥀 #drought Iran, Somalia
www.met.reading.ac.uk/~sgs02rpa/ex...
In this undated photo released by the Indonesian National Search and Rescue Agency (BASARNAS) on Friday, Nov. 14, 2025, rescuers search for survivors after a landslide on Thursday, Nov. 13 hit a village in Cilacap, Indonesia. (BASARNAS via AP)
November 14, 2025 at 5:18 PM
rpallanuk.bsky.social
New assessment reported @nature.com finds weaker land carbon sink but stronger ocean sink than previously thought with #climate change and deforestation stifling how much carbon the continents can take up, leaving more behind to raise atmospheric CO2 levels:

doi.org/10.1038/s415...
Flows of carbon in giga tonnes carbon per year between atmosphere, ocean and land
November 13, 2025 at 12:28 PM
Reposted by Richard Allan
cavershamtidy.bsky.social
In glorious Autumn sunshine we cleared Amersham Rd & southern offshoots, collecting 8 large/14 small bags of litter, finding wrappers so old they could be archaeological! See future rubbish events on the rubbish website:
www.met.reading.ac.uk/~sgs02rpa/KCT/
Keep Caversham Tidy volunteers stand ubiquitously by their collected litter
November 8, 2025 at 1:41 PM
rpallanuk.bsky.social
Global #climate hazards @ukhsa.bsky.social 7th Nov 25:
🌀 Tropical Cyclones affect Caribbean and South East Asia
🌧️ Landslides & floods hit Uganda/Kenya
⛈️ Storms strike Brazil
⚪ Giant Hail in northeast Australia
🏔️ Avalanches in Italy & Nepal
www.met.reading.ac.uk/~sgs02rpa/ex...
© WFP/Arete Communities in Jamaica are clearing up after the devastation caused by Hurricane Melissa.
November 7, 2025 at 4:38 PM
rpallanuk.bsky.social
New @royalsociety.org report assesses geoengineering #climate to mask human caused warming by artificially injecting aerosol haze to reflect sunlight, arguing it can only be used as a well coordinated compliment to deficient mitigation of greenhouse gas emissions:
royalsociety.org/news-resourc...
Schematic of solar radiation modification techniques
November 6, 2025 at 6:49 AM
Reposted by Richard Allan
unirdg-met.bsky.social
New insights into slow progression of #flooding from Lakes Victoria, Kyoga & Albert + expansion of Sudd Wetlands in East Africa 2019-2024 enable better forecasting – new blog by Douglas Mulangwa: socialmetwork.blog/2025/10/28/w...
When the Lakes Remember: Unravelling the Sudd Floods of 2022
By Douglas Mulangwa – [email protected] Between 2019 and 2024, East Africa experienced one of the most persistent high-water periods in modern history: a flood that simply would no…
socialmetwork.blog
November 3, 2025 at 10:51 AM
rpallanuk.bsky.social
Impact of flights on global warming severely underestimated by many carbon calculators & offset schemes that don’t properly account for taxiing, sub-optimal routing or non-CO2 climate effects which are larger component:
www.newscientist.com/article/2502...

Research paper:
doi.org/10.1038/s432...
Your flight emissions are way higher than carbon calculators suggest
Existing tools that work out the carbon footprint of flights greatly underestimate their warming impact, say the makers of a new calculator
www.newscientist.com
November 3, 2025 at 8:12 AM
rpallanuk.bsky.social
Global #climate hazards @ukhsa.bsky.social 31 Oct 2025:
🌀 Hurricane MELISSA hits Caribbean
🌀 Cyclone MONTHA affects India
⛈️ storms across USA
🌧️ #floods over Colombia, Indonesia, Vietnam, Spain, South Sudan
🏔️landslides in Uganda & Papua New Guinea
www.met.reading.ac.uk/~sgs02rpa/ex...
A building stands amid torn tree branches in an affected area, after Hurricane Melissa made landfall in Black River, Jamaica, on October 30, 2025 [Octavio Jones/REUTERS]
October 31, 2025 at 3:53 PM
rpallanuk.bsky.social
Keeping the planet below the 2°C Paris #climate limit will ensure almost all Antarctic ice shelves remain, while most will eventually melt as after warming passes 4.5°C with the potential for 10 metres of sea level rise - based on @nature.com study:
doi.org/10.1038/s415...
Figure 3 of Burgard et al. showing how Antarctic ice shelves become unviable for warming above 4.7 degrees Celsius Fig. 4 of Brugard et al. shwoing ice shelves at risk in low and high emissions scenarios
October 30, 2025 at 12:34 PM
rpallanuk.bsky.social
Rapid warming from rising greenhouse gases + declining aerosol particle pollution are worsening extremes, depleting groundwater & limiting carbon uptake by land - #10ClimateInsights:
10insightsclimate.science
10 New Insights in Climate Science
Essential research findings to support decision-making in a critical decade.
10insightsclimate.science
October 30, 2025 at 8:12 AM
Reposted by Richard Allan
unirdg-met.bsky.social
Expert comment about more destructive tropical cyclones as the world warms:
theconversation.com/hurricane-me...
Hurricane Melissa is a warning – why violent storms are increasingly catching the world off guard
In a single day, Melissa exploded from a moderate storm into a major hurricane with 170mph winds.
theconversation.com
October 30, 2025 at 7:51 AM
Reposted by Richard Allan
cnn.com
Mandatory evacuation orders have been issued for coastal areas of Jamaica before landfall by Melissa, currently the strongest hurricane of 2025.

Follow live updates: https://cnn.it/3WYcbAd
Hurricane Melissa is now the strongest storm on the planet this year | CNN
Melissa is about to deliver Jamaica its most devastating blow from a hurricane.
www.cnn.com
October 27, 2025 at 7:30 PM
rpallanuk.bsky.social
Global #climate hazards @ukhsa.bsky.social:
🌀 tropical cyclone MELISSA in Caribbean
💨 storm Amy France/UK
⛈️ storms Brazil, Colombia, New Zealand, Philippines
🏭 smog N India
🌫️ freezing fog Finland
🌧️ #floods Indonesia, Mexico
🥀 #heatwave & #drought Mali & Zambia
www.met.reading.ac.uk/~sgs02rpa/ex...
climate extremes contribute to food insecurity in Zambia [IPC ACUTE FOOD INSECURITY ANALYSIS APRIL 2025 – MARCH 2026 Published on 17 October 2025
October 24, 2025 at 3:03 PM
rpallanuk.bsky.social
Forecasting renewable energy droughts (and floods) is increasingly crucial in developing a flexible grid and stable electricity prices:
theconversation.com/how-a-more-f...
How a more flexible energy grid can cope better with swings in Britain’s weather
New report shows how seemingly benign weather conditions can have a big impact on British electricity production – and prices.
theconversation.com
October 21, 2025 at 8:35 AM
rpallanuk.bsky.social
Landmark global shipping deal to reduce emissions suspended as Trump spouts usual nonsense www.bbc.com/news/article...
Landmark global shipping deal abandoned under US threats
President Trump intervened in the talks calling the deal a "green scam".
www.bbc.com
October 17, 2025 at 3:03 PM
rpallanuk.bsky.social
Latest @ukceh.bsky.social UK hydrological summary for September 2025 - some respite from dry conditions with high river flow in northwest but low in parts of the east and depleted groundwater across many regions:
nrfa.ceh.ac.uk/sites/defaul...
Map showing above average rainfall in September 2025 over many western and central parts of UK in contrast to last 6 months High river flows in many western parts of UK in September 2025 but low in the east
October 17, 2025 at 2:29 PM
rpallanuk.bsky.social
Global #climate hazards @ukhsa.bsky.social 17 Oct 2025:
🌀 tropical storm JERRY affects Guadeloupe, Martinique
🌧️ #floods across DR Congo, South Sudan, Tunisia, Nigeria, Guatemala, Venezuela, Mexico, USA
⛈️ storms hit Malaysia
www.met.reading.ac.uk/~sgs02rpa/ex...
A local walks along a mud-covered street in Poza Rica, Veracruz state, Mexico, on Tuesday, Oct. 14, 2025, after landslides and torrential rain. (AP Photo/Felix Marquez)
October 17, 2025 at 2:10 PM
rpallanuk.bsky.social
Unseasonal #drought and heat combine with unusual fuel buildup from previous wet years to intensify wildfires as a consequence of human caused warming of #climate
mattwjones.bsky.social Matt Jones @mattwjones.bsky.social · Oct 16
🚨 Launched: State of Wildfires Report 2024-25

The Americas felt the harsh reality of what it means to live on a more fire-prone planet, with extreme #wildfire episodes made 2-3 times more likely by #climate change.

🔥 Full details via our brand new website: stateofwildfires.com/latest-report/
October 16, 2025 at 8:56 AM
rpallanuk.bsky.social
Moving away from livestock towards more sustainable agricultural production & practices along with dietary changes can increasing the resilience & self sufficiency of UK food systems as well as reducing our harmful greenhouse gas emissions: theconversation.com/three-ways-t...
Three ways to make the UK’s food system more resilient – according to new report by 150 experts
Modelling shows that we will need to change not just how we farm, but what farming produces and what we eat.
theconversation.com
October 16, 2025 at 7:35 AM