Deirdre
@flowinguphill.bsky.social
Climate change and societal shifts from a complex systems perspective. Countering hate and disinformation.
Reposted by Deirdre
In a new article over at Carbon Brief, I explore why the past three years – 2023, 2024, and 2025 – have been exceptionally warm. The main culprits turn out to be a combination of El Nino and internal variability, declining aerosols, and a strong solar cycle: www.carbonbrief.org/...
December 11, 2025 at 4:34 PM
In a new article over at Carbon Brief, I explore why the past three years – 2023, 2024, and 2025 – have been exceptionally warm. The main culprits turn out to be a combination of El Nino and internal variability, declining aerosols, and a strong solar cycle: www.carbonbrief.org/...
Response to Jay Lund’s “Nine California Water Rites”
Jay Lund published a clever satire of California water rhetoric today, and he's right that policy-based evidence-making occurs in our water debates.
But Jay's framing misses something critical…
cah2oresearch.com/2025/12/01/r...
Jay Lund published a clever satire of California water rhetoric today, and he's right that policy-based evidence-making occurs in our water debates.
But Jay's framing misses something critical…
cah2oresearch.com/2025/12/01/r...
Response to Jay Lund’s “Nine California Water Rites”
Jay Lund published a clever satire of California water rhetoric today, and he’s right that policy-based evidence-making occurs in our water debates. I worked with Jay and other Delta Independ…
cah2oresearch.com
December 2, 2025 at 2:41 AM
Response to Jay Lund’s “Nine California Water Rites”
Jay Lund published a clever satire of California water rhetoric today, and he's right that policy-based evidence-making occurs in our water debates.
But Jay's framing misses something critical…
cah2oresearch.com/2025/12/01/r...
Jay Lund published a clever satire of California water rhetoric today, and he's right that policy-based evidence-making occurs in our water debates.
But Jay's framing misses something critical…
cah2oresearch.com/2025/12/01/r...
Reposted by Deirdre
Meteorologists are surprised that the weather model that did the best job forecasting hurricanes this year was a new one, introduced by Google. AI may be the beginning of a new era of forecasting. n.pr/49MFa1M
As the 2025 Atlantic hurricane season ends, the future of forecasting is AI
Meteorologists are surprised that the weather model that did the best job forecasting hurricanes this year was a new one, introduced by Google. AI may be the beginning of a new era of forecasting.
n.pr
November 30, 2025 at 3:26 AM
Meteorologists are surprised that the weather model that did the best job forecasting hurricanes this year was a new one, introduced by Google. AI may be the beginning of a new era of forecasting. n.pr/49MFa1M
Reposted by Deirdre
If you’re interested in why the #Antarctic overturning circulation is very likely closer to a tipping point than the #AMOC, I touch on the topic in this 10 minute talk presented virtually today at #COP30. Starts at approx. 20 min mark.
Antarctic science at COP30 🌍❄️
A panel of Australian scientists, including ACEAS Deputy Director @profmattengland.bsky.social (UNSW), today shared insights about abrupt changes unfolding across the #Antarctic environment at the #COP30 Cryosphere Pavilion.
Watch now: www.youtube.com/live/YjYkKvw...
A panel of Australian scientists, including ACEAS Deputy Director @profmattengland.bsky.social (UNSW), today shared insights about abrupt changes unfolding across the #Antarctic environment at the #COP30 Cryosphere Pavilion.
Watch now: www.youtube.com/live/YjYkKvw...
Policy Briefing: Emerging Evidence of Abrupt Changes in the Antarctic Environment
YouTube video by International Cryosphere Climate Initiative
www.youtube.com
November 18, 2025 at 5:22 AM
If you’re interested in why the #Antarctic overturning circulation is very likely closer to a tipping point than the #AMOC, I touch on the topic in this 10 minute talk presented virtually today at #COP30. Starts at approx. 20 min mark.
Reposted by Deirdre
Short 🧵. Several folks routinely do a great job updating global mean temperature comparisons between observations & different model generations, which shows their impressive skill, but I think as a public communication tool downplays the explanatory and predictive power of climate science 1/
In a UN speech today, President Trump said that "all of these [climate] predictions were wrong".
Back in 2019 I led a research effort to digitize old climate model projections and assess how well they did. Turns out they got future warming pretty spot on!
Back in 2019 I led a research effort to digitize old climate model projections and assess how well they did. Turns out they got future warming pretty spot on!
September 23, 2025 at 10:56 PM
Short 🧵. Several folks routinely do a great job updating global mean temperature comparisons between observations & different model generations, which shows their impressive skill, but I think as a public communication tool downplays the explanatory and predictive power of climate science 1/
Reposted by Deirdre
September 2025 was the third warmest on record in the Berkeley Earth dataset. But this downplays how anomalous it was; without 2023 and 2024 this year would have been well above any prior records and well above the long-term trend:
October 23, 2025 at 9:43 PM
September 2025 was the third warmest on record in the Berkeley Earth dataset. But this downplays how anomalous it was; without 2023 and 2024 this year would have been well above any prior records and well above the long-term trend:
Reposted by Deirdre
In that moment Ged understood the singing of the bird, and the language of the water falling in the basin of the fountain, and the shape of the clouds, and the beginning and end of the wind that stirred the leaves.
October 19, 2025 at 3:45 AM
In that moment Ged understood the singing of the bird, and the language of the water falling in the basin of the fountain, and the shape of the clouds, and the beginning and end of the wind that stirred the leaves.
Welp. The Arctic now has a shipping route. www.reuters.com/sustainabili...
Chinese freighter halves EU delivery time on maiden Arctic voyage to UK
A Chinese container ship has completed a pioneering journey through the Arctic to a UK port, state-run news agency Xinhua reported, cutting in half the usual transit time for the electric vehicles and solar panels aboard destined for Europe.
www.reuters.com
October 15, 2025 at 6:36 AM
Welp. The Arctic now has a shipping route. www.reuters.com/sustainabili...
Reposted by Deirdre
📢 Submissions are now open for the U.S. Climate Collection, a joint @theAGU + @ametsoc initiative.
This special collection will publish U.S.-focused climate assessment science that’s free to read, ensuring rigorous, accessible science informs decisions for years to come.
🔗 buff.ly/1tHUSLC
This special collection will publish U.S.-focused climate assessment science that’s free to read, ensuring rigorous, accessible science informs decisions for years to come.
🔗 buff.ly/1tHUSLC
September 25, 2025 at 1:37 PM
📢 Submissions are now open for the U.S. Climate Collection, a joint @theAGU + @ametsoc initiative.
This special collection will publish U.S.-focused climate assessment science that’s free to read, ensuring rigorous, accessible science informs decisions for years to come.
🔗 buff.ly/1tHUSLC
This special collection will publish U.S.-focused climate assessment science that’s free to read, ensuring rigorous, accessible science informs decisions for years to come.
🔗 buff.ly/1tHUSLC
Reposted by Deirdre
In a UN speech today, President Trump said that "all of these [climate] predictions were wrong".
Back in 2019 I led a research effort to digitize old climate model projections and assess how well they did. Turns out they got future warming pretty spot on!
Back in 2019 I led a research effort to digitize old climate model projections and assess how well they did. Turns out they got future warming pretty spot on!
September 23, 2025 at 5:01 PM
In a UN speech today, President Trump said that "all of these [climate] predictions were wrong".
Back in 2019 I led a research effort to digitize old climate model projections and assess how well they did. Turns out they got future warming pretty spot on!
Back in 2019 I led a research effort to digitize old climate model projections and assess how well they did. Turns out they got future warming pretty spot on!
Reposted by Deirdre
my mom took tylenol when she was pregnant, which made me super focused on menswear and now i have a million followers on twitter
September 22, 2025 at 11:10 PM
my mom took tylenol when she was pregnant, which made me super focused on menswear and now i have a million followers on twitter
From DeepSeek. Why I find modern transformer models to be fascinating.
September 21, 2025 at 3:58 PM
From DeepSeek. Why I find modern transformer models to be fascinating.
Reposted by Deirdre
My co-author @peterhotezmdphd.bsky.social and I spoke with @drkiki.bsky.social about our new book #ScienceUnderSiege earlier today on the #ThisWeekInScience podcast: www.youtube.com/watch?v=ILJE...
This Week in Science Podcast (TWIS) - Episode 1030
YouTube video by This Week in Science (TWIS)
www.youtube.com
September 19, 2025 at 9:25 PM
My co-author @peterhotezmdphd.bsky.social and I spoke with @drkiki.bsky.social about our new book #ScienceUnderSiege earlier today on the #ThisWeekInScience podcast: www.youtube.com/watch?v=ILJE...
Anthropic told U.S. law-enforcement contractors they cannot use Claude AI for domestic surveillance.
The Trump White House is angry, seeing the ban as unpatriotic and politically selective.
www.semafor.com/article/09/1...
The Trump White House is angry, seeing the ban as unpatriotic and politically selective.
www.semafor.com/article/09/1...
Anthropic irks White House with limits on models’ use
The AI firm declined requests by contractors working with federal law enforcement that could see its tools being used for surveillance.
www.semafor.com
September 18, 2025 at 4:47 AM
Anthropic told U.S. law-enforcement contractors they cannot use Claude AI for domestic surveillance.
The Trump White House is angry, seeing the ban as unpatriotic and politically selective.
www.semafor.com/article/09/1...
The Trump White House is angry, seeing the ban as unpatriotic and politically selective.
www.semafor.com/article/09/1...
Reposted by Deirdre
It's hard to overstate just how off the charts warm the Pacific is right now. The swath of the basin from California to Japan (a HUGE area) from 25N to 60N is ~3F (1.6C) above normal. To put it into math terms that is 6 Sigma/ standard deviations above the mean. More… 1/
September 16, 2025 at 2:08 AM
It's hard to overstate just how off the charts warm the Pacific is right now. The swath of the basin from California to Japan (a HUGE area) from 25N to 60N is ~3F (1.6C) above normal. To put it into math terms that is 6 Sigma/ standard deviations above the mean. More… 1/
Reposted by Deirdre
I do not care what comes after; I have seen the dragons on the wind of morning.
September 14, 2025 at 7:21 PM
I do not care what comes after; I have seen the dragons on the wind of morning.
This gives me some hope.
September 11, 2025 at 8:14 AM
This gives me some hope.
Reposted by Deirdre
🌳 Losing touch with nature
A new study finds people’s connection to nature has fallen 60% since 1800, risking an 'extinction of experience' without radical change.
🔗 www.theguardian.com/environment/...
#SciComm 🧪 #Nature
A new study finds people’s connection to nature has fallen 60% since 1800, risking an 'extinction of experience' without radical change.
🔗 www.theguardian.com/environment/...
#SciComm 🧪 #Nature
Human connection to nature has declined 60% in 200 years, study finds
Prof Miles Richardson says people risk ‘extinction of experience’ in the natural world without new policies
www.theguardian.com
September 8, 2025 at 4:50 AM
🌳 Losing touch with nature
A new study finds people’s connection to nature has fallen 60% since 1800, risking an 'extinction of experience' without radical change.
🔗 www.theguardian.com/environment/...
#SciComm 🧪 #Nature
A new study finds people’s connection to nature has fallen 60% since 1800, risking an 'extinction of experience' without radical change.
🔗 www.theguardian.com/environment/...
#SciComm 🧪 #Nature
Reposted by Deirdre
September 7, 2025 at 1:58 AM
Reposted by Deirdre
From sea ice to ocean currents, Antarctica is now undergoing abrupt changes – with global ramifications theconversation.com/from-sea-ice...
From sea ice to ocean currents, Antarctica is now undergoing abrupt changes – and we’ll all feel them
The vast ice of Antarctica has long seemed impregnable. But sudden changes are arriving – from shrinking sea ice to melting ice sheets and slowing ocean currents.
theconversation.com
August 21, 2025 at 1:00 AM
From sea ice to ocean currents, Antarctica is now undergoing abrupt changes – with global ramifications theconversation.com/from-sea-ice...
Reposted by Deirdre
🌊 Flood underinsurance in the US
A new study finds 70% of annual flood losses (about $17B) are uninsured. Most at-risk households are underinsured, with the burden falling hardest on low-income communities.
🔗 www.nature.com/articles/s41...
#SciComm #ClimateCrisis #Floods 🧪
A new study finds 70% of annual flood losses (about $17B) are uninsured. Most at-risk households are underinsured, with the burden falling hardest on low-income communities.
🔗 www.nature.com/articles/s41...
#SciComm #ClimateCrisis #Floods 🧪
Measuring flood underinsurance in the USA - Nature Climate Change
Homeowners could benefit from flood insurance to offset the negative impacts of climate-induced natural disasters. However, with detailed micro-level data, researchers find substantial protection gaps...
www.nature.com
August 17, 2025 at 12:42 PM
🌊 Flood underinsurance in the US
A new study finds 70% of annual flood losses (about $17B) are uninsured. Most at-risk households are underinsured, with the burden falling hardest on low-income communities.
🔗 www.nature.com/articles/s41...
#SciComm #ClimateCrisis #Floods 🧪
A new study finds 70% of annual flood losses (about $17B) are uninsured. Most at-risk households are underinsured, with the burden falling hardest on low-income communities.
🔗 www.nature.com/articles/s41...
#SciComm #ClimateCrisis #Floods 🧪
How @michaelemann.bsky.social reshapes the noospheric manifold.
The noosphere is Tielhard de Chardin’s sphere of human thought and writings.
Have been exploring the Riemannian geometry of the semantic space with Claude, ChatGPT and DeepSeek.
The noosphere is Tielhard de Chardin’s sphere of human thought and writings.
Have been exploring the Riemannian geometry of the semantic space with Claude, ChatGPT and DeepSeek.
August 11, 2025 at 5:15 AM
How @michaelemann.bsky.social reshapes the noospheric manifold.
The noosphere is Tielhard de Chardin’s sphere of human thought and writings.
Have been exploring the Riemannian geometry of the semantic space with Claude, ChatGPT and DeepSeek.
The noosphere is Tielhard de Chardin’s sphere of human thought and writings.
Have been exploring the Riemannian geometry of the semantic space with Claude, ChatGPT and DeepSeek.
Reposted by Deirdre
Part 2 of my interview with Robyn Williams on the ABC Science Show, where we discuss funding cuts to US climate science, the threats of sea-level rise, and whether we're already too late to deal with climate change. www.abc.net.au/listen/progr...
Is the scientific chaos being echoed in modern America? - ABC listen
Cuts are widespread across US science and research impacting climate monitoring. Understanding how climate is changing is vital if we are to have any hope in reducing our impact and preparing for a ch...
www.abc.net.au
August 11, 2025 at 2:21 AM
Part 2 of my interview with Robyn Williams on the ABC Science Show, where we discuss funding cuts to US climate science, the threats of sea-level rise, and whether we're already too late to deal with climate change. www.abc.net.au/listen/progr...
Reposted by Deirdre
This week I joined the wonderful Robyn Williams on the ABC Science Show to discuss our recent North Atlantic Nature paper plus a range of other topics — marine heat waves, polar vortex wobbles, the AMOC, and the deep cost of climate inaction. Part 2 airs next week.
www.abc.net.au/listen/progr...
www.abc.net.au/listen/progr...
Oceans are becoming hotter, long-term trends show - ABC listen
Matthew England is studying global changes in ocean heat and circulation. The AMOC - the Atlantic Meridional Overturning Circulation is showing signs of slowing, and as it does, impacts are being felt...
www.abc.net.au
August 2, 2025 at 3:04 AM
This week I joined the wonderful Robyn Williams on the ABC Science Show to discuss our recent North Atlantic Nature paper plus a range of other topics — marine heat waves, polar vortex wobbles, the AMOC, and the deep cost of climate inaction. Part 2 airs next week.
www.abc.net.au/listen/progr...
www.abc.net.au/listen/progr...