Richard Allan

People moving in Water logged area [Credit: DMC Sri Lanka via WHO]

Global #climate hazards @ukhsa.bsky.social 5th Dec 2025:
🌧️ #floods & landslides affect South & Southeast Asia, Bolivia, Peru & South Africa
🌩️ storms hit DR Congo & New Zealand
www.met.reading.ac.uk/~sgs02rpa/ex...

Flooded roads in Italy from above

Global #climate hazards @ukhsa.bsky.social 28 Nov 25
🌧️ #floods & landslides Albania, Italy, South Africa, French Polynesia, Malaysia, Indonesia, Philippines, Vietnam, Mexico
⛈️ storms hit eastern Australia, Brazil, USA, Sri Lanka & India
🥀 #drought grips Somalia
www.met.reading.ac.uk/~sgs02rpa/ex...

Chart showing annual cycle of Arctic sea ice extent for 2022-2025 plus 2016 and 2012

Slow late November growth in #Arctic sea ice extent, 2nd only to 2016 based on @nsidc.bsky.social data:
nsidc.org/sea-ice-toda...

Solar radiation modification could reduce global temperatures but is no substitute for reducing emissions, says Royal Society | Royal Society A Royal Society briefing, published today, considers the potential impacts of solar radiation modification (SRM) if deployed globally, in a scientifically informed way, across both hemispheres and for...

Only through carefully coordinated international agreement and as an addition to mitigation of greenhouse gas emissions, assuming the latter was deemed inadequate: royalsociety.org/news/2025/11...

You could email the author? Couldn’t find an open access version

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)

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...

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...

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...

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.

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...

No. But at the top of our new large water tank is the computer that assesses various in/out temperatures & weather conditions to fine tune things. There’s a survey before install to assess heat loss from each room so they know if to install bigger radiators and they’d answer these kinds of questions

Not noticed any issues? Our air to water heat pump is designed to work effectively and without issue down to -10C snd below and has inbuilt frost settings so shouldn’t be an issue in the UK, though regularly checking for debris or snow build up is also recommended.

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.

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...

Frost hollow created by heat pump

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!

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

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...

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)

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...

Flows of carbon in giga tonnes carbon per year between atmosphere, ocean and land

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...

Keep Caversham Tidy volunteers stand ubiquitously by their collected litter

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/

© WFP/Arete Communities in Jamaica are clearing up after the devastation caused by Hurricane Melissa.

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...

Schematic of solar radiation modification techniques

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...

Aviation passenger carbon footprint calculator with comprehensive emissions, life cycle coverage, and historical adjustment - Communications Earth & Environment A new aviation carbon footprint tool improves accuracy and transparency by incorporating nitrogen oxide, water vapor, and contrail impacts, life cycle emissions from aircraft and airports, and adjusti...

You could take a look at the underlying research article I shared & references within: www.nature.com/articles/s43...

Contrails, NOx + water vapour all trap outgoing longwave radiation for example, though the precise calculation depends on time scale since CO2 stays in the atmosphere much longer

When the Lakes Remember: Unravelling the Sudd Floods of 2022 By Douglas Mulangwa – d.mulangwa@pgr.reading.ac.uk Between 2019 and 2024, East Africa experienced one of the most persistent high-water periods in modern history: a flood that simply would no…

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...

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

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...

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]

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...

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

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...

10 New Insights in Climate Science Essential research findings to support decision-making in a critical decade.

Rapid warming from rising greenhouse gases + declining aerosol particle pollution are worsening extremes, depleting groundwater & limiting carbon uptake by land - #10ClimateInsights:
10insightsclimate.science

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.

Expert comment about more destructive tropical cyclones as the world warms:
theconversation.com/hurricane-me...

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.

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

climate extremes contribute to food insecurity in Zambia [IPC ACUTE FOOD INSECURITY ANALYSIS APRIL 2025 – MARCH 2026 Published on 17 October 2025

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...

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.

Forecasting renewable energy droughts (and floods) is increasingly crucial in developing a flexible grid and stable electricity prices:
theconversation.com/how-a-more-f...

Landmark global shipping deal abandoned under US threats President Trump intervened in the talks calling the deal a "green scam".

Landmark global shipping deal to reduce emissions suspended as Trump spouts usual nonsense www.bbc.com/news/article...

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

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...