Tim Osborn
@timosbornclim.bsky.social
Climate variability and change | Professor of Climate Science & Director of Climatic Research Unit | UEA | Views expressed here are my own, not UEA's
Pinned
Tim Osborn
@timosbornclim.bsky.social
· Nov 1
Some people are mis-using IPCC Table 12.12 to falsely claim that the latest IPCC assessment is that most types of extreme weather have not increased. Thread to explain why they're wrong.
Reposted by Tim Osborn
Crisis in Iran as reservoirs supplying Mashhad, the second-largest city with 4 million people, fall below 3%
Authorities warn of an unprecedented drought emergency
www.theguardian.com/world/2025/n...
Authorities warn of an unprecedented drought emergency
www.theguardian.com/world/2025/n...
Water levels below 3% in dam reservoirs for Iran’s second city, say reports
Storage dwindles in Mashhad, home to 4 million people, as country struggles with drought
www.theguardian.com
November 9, 2025 at 5:46 PM
Crisis in Iran as reservoirs supplying Mashhad, the second-largest city with 4 million people, fall below 3%
Authorities warn of an unprecedented drought emergency
www.theguardian.com/world/2025/n...
Authorities warn of an unprecedented drought emergency
www.theguardian.com/world/2025/n...
Reposted by Tim Osborn
As we approach the 30th United Nations Climate Change conference, @dialoguescc.bsky.social asked @glenpeters.bsky.social: is limiting the temperature increase to 1.5°C still possible? journals.sagepub.com/doi/full/10....
November 7, 2025 at 11:19 AM
As we approach the 30th United Nations Climate Change conference, @dialoguescc.bsky.social asked @glenpeters.bsky.social: is limiting the temperature increase to 1.5°C still possible? journals.sagepub.com/doi/full/10....
Reposted by Tim Osborn
Should we start historical climate simulations in 1750 (or 1800) rather than 1850?
Importance of beginning industrial-era climate simulations in the eighteenth century
Ballinger, Schurer et al.: iopscience.iop.org/article/10.1...
Importance of beginning industrial-era climate simulations in the eighteenth century
Ballinger, Schurer et al.: iopscience.iop.org/article/10.1...
November 6, 2025 at 3:45 PM
Should we start historical climate simulations in 1750 (or 1800) rather than 1850?
Importance of beginning industrial-era climate simulations in the eighteenth century
Ballinger, Schurer et al.: iopscience.iop.org/article/10.1...
Importance of beginning industrial-era climate simulations in the eighteenth century
Ballinger, Schurer et al.: iopscience.iop.org/article/10.1...
Reposted by Tim Osborn
Another 8 UK sites broke November high daily (09-09) min temperature records this morning..29 in the last 2 days
With 14.8C at Chivenor N Devon, it's only 0.1C below the England Bonfire night highest daily min temp record, and 0.2C below the similar UK record set Colwyn Bay 1938
With 14.8C at Chivenor N Devon, it's only 0.1C below the England Bonfire night highest daily min temp record, and 0.2C below the similar UK record set Colwyn Bay 1938
a red and white thermometer shows that the temperature is 77 degrees celsius
ALT: a red and white thermometer shows that the temperature is 77 degrees celsius
media.tenor.com
November 5, 2025 at 7:57 PM
Another 8 UK sites broke November high daily (09-09) min temperature records this morning..29 in the last 2 days
With 14.8C at Chivenor N Devon, it's only 0.1C below the England Bonfire night highest daily min temp record, and 0.2C below the similar UK record set Colwyn Bay 1938
With 14.8C at Chivenor N Devon, it's only 0.1C below the England Bonfire night highest daily min temp record, and 0.2C below the similar UK record set Colwyn Bay 1938
Reposted by Tim Osborn
A reminder of what happened last time a UK govt tried to reduce bills by "cutting the green crap"
Analysis: Cutting the ‘green crap’ has added £22bn to UK energy bills since 2015
www.carbonbrief.org/...
Analysis: Cutting the ‘green crap’ has added £22bn to UK energy bills since 2015
www.carbonbrief.org/...
November 5, 2025 at 8:18 PM
A reminder of what happened last time a UK govt tried to reduce bills by "cutting the green crap"
Analysis: Cutting the ‘green crap’ has added £22bn to UK energy bills since 2015
www.carbonbrief.org/...
Analysis: Cutting the ‘green crap’ has added £22bn to UK energy bills since 2015
www.carbonbrief.org/...
Reposted by Tim Osborn
a century of glaciers melting 🧪🌐
November 3, 2025 at 5:21 PM
a century of glaciers melting 🧪🌐
Reposted by Tim Osborn
Yesterday marked 60 years of Numerical Weather Prediction (NWP) at the Met Office
Find out more about the history of NWP in our recent blog www.metoffice.gov.uk/blog/2025/nu...
Find out more about the history of NWP in our recent blog www.metoffice.gov.uk/blog/2025/nu...
Numerical Weather Prediction at 60: A journey of innovation at the Met Office
Sixty years ago, the Met Office embarked on a journey that would transform weather forecasting in the United Kingdom and around the world.
www.metoffice.gov.uk
November 3, 2025 at 12:59 PM
Yesterday marked 60 years of Numerical Weather Prediction (NWP) at the Met Office
Find out more about the history of NWP in our recent blog www.metoffice.gov.uk/blog/2025/nu...
Find out more about the history of NWP in our recent blog www.metoffice.gov.uk/blog/2025/nu...
HadCRUT5 global temperature dataset now updated to Sep 2025.
As usual, data can be downloaded from CRU/UEA website: crudata.uea.ac.uk/cru/data/tem...
And from Met Office/hadobs website: www.metoffice.gov.uk/hadobs/hadcr...
@climateuea.bsky.social @colinmorice.bsky.social
As usual, data can be downloaded from CRU/UEA website: crudata.uea.ac.uk/cru/data/tem...
And from Met Office/hadobs website: www.metoffice.gov.uk/hadobs/hadcr...
@climateuea.bsky.social @colinmorice.bsky.social
November 3, 2025 at 1:25 PM
HadCRUT5 global temperature dataset now updated to Sep 2025.
As usual, data can be downloaded from CRU/UEA website: crudata.uea.ac.uk/cru/data/tem...
And from Met Office/hadobs website: www.metoffice.gov.uk/hadobs/hadcr...
@climateuea.bsky.social @colinmorice.bsky.social
As usual, data can be downloaded from CRU/UEA website: crudata.uea.ac.uk/cru/data/tem...
And from Met Office/hadobs website: www.metoffice.gov.uk/hadobs/hadcr...
@climateuea.bsky.social @colinmorice.bsky.social
From @ellecordova.bsky.social (NASA GISS get a shout out in this) www.tiktok.com/@elle.cordov...
For our scientists
TikTok video by Elle Cordova
www.tiktok.com
October 31, 2025 at 11:58 PM
From @ellecordova.bsky.social (NASA GISS get a shout out in this) www.tiktok.com/@elle.cordov...
Reposted by Tim Osborn
Nice analyses by Eden Markovitz and Nathan Steiger on recent persistent drought for Easter Island (Rapa Nui). Indeed, the island had one of the more severe future drying trends in our 2016 paper (Karnauskas et al. www.nature.com/articles/ncl...) agupubs.onlinelibrary.wiley.com/doi/10.1029/...
October 30, 2025 at 11:24 PM
Nice analyses by Eden Markovitz and Nathan Steiger on recent persistent drought for Easter Island (Rapa Nui). Indeed, the island had one of the more severe future drying trends in our 2016 paper (Karnauskas et al. www.nature.com/articles/ncl...) agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Reposted by Tim Osborn
Is social media dying? How much has Twitter changed as it became X? Which party now dominates the conversation?
Using nationally representative ANES data from 2020 & 2024, I map how the U.S. social media landscape has transformed.
Here are the key take-aways 🧵
arxiv.org/abs/2510.25417
Using nationally representative ANES data from 2020 & 2024, I map how the U.S. social media landscape has transformed.
Here are the key take-aways 🧵
arxiv.org/abs/2510.25417
October 30, 2025 at 8:09 AM
Is social media dying? How much has Twitter changed as it became X? Which party now dominates the conversation?
Using nationally representative ANES data from 2020 & 2024, I map how the U.S. social media landscape has transformed.
Here are the key take-aways 🧵
arxiv.org/abs/2510.25417
Using nationally representative ANES data from 2020 & 2024, I map how the U.S. social media landscape has transformed.
Here are the key take-aways 🧵
arxiv.org/abs/2510.25417
Reposted by Tim Osborn
Many important weather and climate data streams have gone silent as the U.S. government shutdown continues on.
As just one example, NOAA’s Global Monitoring Laboratory did not release its regular monthly update for greenhouse gases, such as for carbon dioxide, methane, and nitrous oxide.
As just one example, NOAA’s Global Monitoring Laboratory did not release its regular monthly update for greenhouse gases, such as for carbon dioxide, methane, and nitrous oxide.
October 30, 2025 at 11:46 PM
Many important weather and climate data streams have gone silent as the U.S. government shutdown continues on.
As just one example, NOAA’s Global Monitoring Laboratory did not release its regular monthly update for greenhouse gases, such as for carbon dioxide, methane, and nitrous oxide.
As just one example, NOAA’s Global Monitoring Laboratory did not release its regular monthly update for greenhouse gases, such as for carbon dioxide, methane, and nitrous oxide.
Reposted by Tim Osborn
Apparently Hurricane Melissa was "engineered" as part of a land-clearing plot to build smart cities in Jamaica 🤔 Here is my attempt, via BBC Verify, to douse this conspiracy nonsense with some science facts: www.bbc.co.uk/news/live/c9...
Examining deadly Rio clashes between police and notorious gang
Latest updates from the BBC's specialists in fact-checking, verifying video and tackling disinformation.
www.bbc.co.uk
October 29, 2025 at 5:43 PM
Apparently Hurricane Melissa was "engineered" as part of a land-clearing plot to build smart cities in Jamaica 🤔 Here is my attempt, via BBC Verify, to douse this conspiracy nonsense with some science facts: www.bbc.co.uk/news/live/c9...
Reposted by Tim Osborn
We are proud to share that Dr @mattwjones.bsky.social from our @ueaenv.bsky.social has won the 2025 Philip Leverhulme Prize for Geography from the @leverhulme.ac.uk 🥳
Read more on our website 👉 https://bit.ly/4nhJOrs
#AwardWin #Research #Prize
Read more on our website 👉 https://bit.ly/4nhJOrs
#AwardWin #Research #Prize
October 23, 2025 at 3:49 PM
We are proud to share that Dr @mattwjones.bsky.social from our @ueaenv.bsky.social has won the 2025 Philip Leverhulme Prize for Geography from the @leverhulme.ac.uk 🥳
Read more on our website 👉 https://bit.ly/4nhJOrs
#AwardWin #Research #Prize
Read more on our website 👉 https://bit.ly/4nhJOrs
#AwardWin #Research #Prize
Reposted by Tim Osborn
Interesting study from researchers at UCL on how wind power has held down energy costs in the long term.
The key argument is that it has lowered gas prices in Europe by reducing demand for gas. And actually most of the savings are on gas, not electricity bills
www.theguardian.com/environment/...
The key argument is that it has lowered gas prices in Europe by reducing demand for gas. And actually most of the savings are on gas, not electricity bills
www.theguardian.com/environment/...
Wind power has cut £104bn from UK energy costs since 2010, study finds
Reduction comes from energy generated from windfarms and lower cost of gas owing to lower demand
www.theguardian.com
October 28, 2025 at 8:34 AM
Interesting study from researchers at UCL on how wind power has held down energy costs in the long term.
The key argument is that it has lowered gas prices in Europe by reducing demand for gas. And actually most of the savings are on gas, not electricity bills
www.theguardian.com/environment/...
The key argument is that it has lowered gas prices in Europe by reducing demand for gas. And actually most of the savings are on gas, not electricity bills
www.theguardian.com/environment/...
Reposted by Tim Osborn
Wind power has saved UK consumers over £100 billion since 2010 – see our new study
UK saved £14.2 billion from lower electricity prices & £133.3 billion from reduced natural gas prices. Offset £43.2 billion in wind energy subsidies consumers saved £104.3 billion
theconversation.com/wind-power-h...
UK saved £14.2 billion from lower electricity prices & £133.3 billion from reduced natural gas prices. Offset £43.2 billion in wind energy subsidies consumers saved £104.3 billion
theconversation.com/wind-power-h...
Wind power has saved UK consumers over £100 billion since 2010 – new study
Wind power offers a large financial benefit to UK consumers.
theconversation.com
October 28, 2025 at 7:53 AM
Wind power has saved UK consumers over £100 billion since 2010 – see our new study
UK saved £14.2 billion from lower electricity prices & £133.3 billion from reduced natural gas prices. Offset £43.2 billion in wind energy subsidies consumers saved £104.3 billion
theconversation.com/wind-power-h...
UK saved £14.2 billion from lower electricity prices & £133.3 billion from reduced natural gas prices. Offset £43.2 billion in wind energy subsidies consumers saved £104.3 billion
theconversation.com/wind-power-h...
Reposted by Tim Osborn
Just published, a land-mark paper by Annemarie Eckes-Shephard et al.! It assesses the performance of a new generation of Demography-enabled Dynamic Global Vegetation (D-DGVMs), that attempt to simulate the changing size and age structure of trees in forests.
nph.onlinelibrary.wiley.com
October 24, 2025 at 3:12 AM
Just published, a land-mark paper by Annemarie Eckes-Shephard et al.! It assesses the performance of a new generation of Demography-enabled Dynamic Global Vegetation (D-DGVMs), that attempt to simulate the changing size and age structure of trees in forests.
Reposted by Tim Osborn
📣 Job Alert! I am hiring a postdoc to work on the project "From sparse data to full spatio-temporal fields: surface ocean carbon and beyond". The goal is to use stats, ML, data, and models to improve our estimate of the ocean carbon sink.
Learn more and apply: www.rfcuny.org/careers/post...
Learn more and apply: www.rfcuny.org/careers/post...
October 22, 2025 at 7:05 PM
📣 Job Alert! I am hiring a postdoc to work on the project "From sparse data to full spatio-temporal fields: surface ocean carbon and beyond". The goal is to use stats, ML, data, and models to improve our estimate of the ocean carbon sink.
Learn more and apply: www.rfcuny.org/careers/post...
Learn more and apply: www.rfcuny.org/careers/post...
Reposted by Tim Osborn
I'm honoured to have been appointed Chief Scientific Adviser to the UK Department of Energy Security and Net Zero:
www.gov.uk/government/n...
www.gov.uk/government/n...
New DESNZ Chief Scientific Adviser appointed
The Department for Energy Security and Net Zero has appointed Professor Emily Shuckburgh to the role of Chief Scientific Adviser.
www.gov.uk
October 22, 2025 at 4:44 PM
I'm honoured to have been appointed Chief Scientific Adviser to the UK Department of Energy Security and Net Zero:
www.gov.uk/government/n...
www.gov.uk/government/n...
Reposted by Tim Osborn
I feel Thames Water should have been asked to comment.
Woman fined £150 for pouring coffee down drain www.bbc.com/news/article...
Woman fined £150 for pouring coffee down drain www.bbc.com/news/article...
Kew woman fined £150 for pouring coffee down drain in Richmond
Burcu Yesilyurt says the fine is "disproportionate" while Richmond Council say it is in line with its policies.
www.bbc.com
October 22, 2025 at 7:18 AM
I feel Thames Water should have been asked to comment.
Woman fined £150 for pouring coffee down drain www.bbc.com/news/article...
Woman fined £150 for pouring coffee down drain www.bbc.com/news/article...
Reposted by Tim Osborn
Happy to share our last study published in @natcomms.nature.com
We asked
Can the weather tell trees when it’ is time to reproduce?
www.nature.com/articles/s41...
We asked
Can the weather tell trees when it’ is time to reproduce?
www.nature.com/articles/s41...
October 20, 2025 at 4:34 AM
Happy to share our last study published in @natcomms.nature.com
We asked
Can the weather tell trees when it’ is time to reproduce?
www.nature.com/articles/s41...
We asked
Can the weather tell trees when it’ is time to reproduce?
www.nature.com/articles/s41...
Reposted by Tim Osborn
The PETM was a geologically rapid carbon pulse + warming. Tho there was a biodiversity crisis it was far from the scale of other carbon cycle perturbation mass extinctions despite its rapidity & magnitude. Wei et al. propose weathering diffs led to less ocean O2 loss:
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Changes in continental weathering regimes inhibited global marine deoxygenation during the Paleocene-Eocene thermal maximum - Nature Communications
Lithium isotope records in marine carbonates and siliciclastic rocks reveal that shifts in continental weathering regime and source reduced ocean environmental stress and biodiversity loss during the ...
www.nature.com
October 19, 2025 at 10:33 PM
The PETM was a geologically rapid carbon pulse + warming. Tho there was a biodiversity crisis it was far from the scale of other carbon cycle perturbation mass extinctions despite its rapidity & magnitude. Wei et al. propose weathering diffs led to less ocean O2 loss:
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Tim Osborn
Reposted by Tim Osborn
Noticed all the acorns in the UK this year? You’re not alone.
A study of 331 plant species shows temperature drives seed booms (masting), but cues vary by biome:
Warm = more seeds in temperate forests
Cool = more in tropics
Climate change is disrupting these patterns.
www.nature.com/articles/s41...
A study of 331 plant species shows temperature drives seed booms (masting), but cues vary by biome:
Warm = more seeds in temperate forests
Cool = more in tropics
Climate change is disrupting these patterns.
www.nature.com/articles/s41...
Weather drivers of reproductive variability in perennial plants and their implications for climate change risks - Nature Communications
Many perennial plants reproduce in irregular pulses, known as masting, triggered by weather cues. This global study finds temperature is the key driver, with climate change expected to cause divergent...
www.nature.com
October 18, 2025 at 7:34 AM
Noticed all the acorns in the UK this year? You’re not alone.
A study of 331 plant species shows temperature drives seed booms (masting), but cues vary by biome:
Warm = more seeds in temperate forests
Cool = more in tropics
Climate change is disrupting these patterns.
www.nature.com/articles/s41...
A study of 331 plant species shows temperature drives seed booms (masting), but cues vary by biome:
Warm = more seeds in temperate forests
Cool = more in tropics
Climate change is disrupting these patterns.
www.nature.com/articles/s41...