Ambarish Karmalkar
@ambarish.bsky.social
Climate Scientist | Studying how global warming affects us locally | Assistant Professor @ University of Rhode Island | https://web.uri.edu/geo/ambarish-karmalkar/
"Knowledge can’t stay trapped in journals if it’s meant to help us make better choices."
My last research project showed that many mammals now live in climates different from the ones they occupied for thousands of years.
Publishing it made me realize how often important science stays inaccessible
and why I now focus on sharing it clearly.
Full story ↓
🧪 #SciComm
buff.ly/WMgl3kB
Publishing it made me realize how often important science stays inaccessible
and why I now focus on sharing it clearly.
Full story ↓
🧪 #SciComm
buff.ly/WMgl3kB
The Climate Study That Changed My Life Forever
How research showing mammals in the wrong climates made me leave the lab for storytelling The last scientific research that I led made me quit...
climateages.com
November 18, 2025 at 3:52 PM
"Knowledge can’t stay trapped in journals if it’s meant to help us make better choices."
If we put our faith in carbon removal technologies, then yeah, even 1C is possible. At the moment though, we have absolutely no idea if we will have these technologies working at scale.
www.theguardian.com/environment/...
www.theguardian.com/environment/...
Still a chance to return to 1.5C climate goal, researchers say
Report calls for scaling-up of renewable energy and electrification of key sectors to limit peak of global heating
www.theguardian.com
November 16, 2025 at 12:45 PM
If we put our faith in carbon removal technologies, then yeah, even 1C is possible. At the moment though, we have absolutely no idea if we will have these technologies working at scale.
www.theguardian.com/environment/...
www.theguardian.com/environment/...
Reposted by Ambarish Karmalkar
Now that the Sept and Oct data are (belatedly) in, it looks like 2025 will be the second warmest year in the record (~80% probability). The last three years are in a class of their own.
November 15, 2025 at 4:54 PM
Now that the Sept and Oct data are (belatedly) in, it looks like 2025 will be the second warmest year in the record (~80% probability). The last three years are in a class of their own.
Reposted by Ambarish Karmalkar
A bit of good news: I think you'd all be pleasantly surprised by how resistant the undergrads are becoming to AI. Institutions have lost their minds on this front, but more and more the students themselves are saying "no" to this horribly corrosive technology.
November 8, 2025 at 7:37 PM
A bit of good news: I think you'd all be pleasantly surprised by how resistant the undergrads are becoming to AI. Institutions have lost their minds on this front, but more and more the students themselves are saying "no" to this horribly corrosive technology.
Reposted by Ambarish Karmalkar
The claim that “emissions have come down” in this @nytimes.com @sominisengupta.bsky.social article on where we are ten years post-Paris is FALSE.
Global emissions were at an all-time high in 2024.
As it stands this claim is misinformation. They need to issue a correction!
Global emissions were at an all-time high in 2024.
As it stands this claim is misinformation. They need to issue a correction!
November 7, 2025 at 11:17 AM
The claim that “emissions have come down” in this @nytimes.com @sominisengupta.bsky.social article on where we are ten years post-Paris is FALSE.
Global emissions were at an all-time high in 2024.
As it stands this claim is misinformation. They need to issue a correction!
Global emissions were at an all-time high in 2024.
As it stands this claim is misinformation. They need to issue a correction!
Greenhouse gas emissions continue to grow www.carbonbrief.org/unep-new-cou...
November 8, 2025 at 1:42 PM
Greenhouse gas emissions continue to grow www.carbonbrief.org/unep-new-cou...
Reposted by Ambarish Karmalkar
Artist be like if I shift this line 0.05 cm to the left, increase overlay by 2%, and move this character’s head slightly by 3° will make a life changing difference that everyone notices
November 7, 2025 at 1:40 AM
Artist be like if I shift this line 0.05 cm to the left, increase overlay by 2%, and move this character’s head slightly by 3° will make a life changing difference that everyone notices
Reposted by Ambarish Karmalkar
Overlooked East Antarctica melting may skew sea level forecasts.
Some important new insights from Fabio Dias @antarcticsciaus.bsky.social
❄️
phys.org/news/2025-10...
Some important new insights from Fabio Dias @antarcticsciaus.bsky.social
❄️
phys.org/news/2025-10...
Overlooked East Antarctica melting may skew sea level forecasts
A study published today found that while ice shelves in West Antarctica melt year-round, those in East Antarctica experience summer melting spikes, when sea ice retreats and warm ocean water flows ben...
phys.org
November 1, 2025 at 9:15 PM
Overlooked East Antarctica melting may skew sea level forecasts.
Some important new insights from Fabio Dias @antarcticsciaus.bsky.social
❄️
phys.org/news/2025-10...
Some important new insights from Fabio Dias @antarcticsciaus.bsky.social
❄️
phys.org/news/2025-10...
Reposted by Ambarish Karmalkar
I've finally got around to curating a selection of films about the #climate crisis 🎥
There's lot of mediocre climate films out there, but for me these stand out head & shoulders above the rest 🎞️
They make excellent resources for classrooms, lecture halls, or community cinema's 🎬
Thread:🧵Plz RT
There's lot of mediocre climate films out there, but for me these stand out head & shoulders above the rest 🎞️
They make excellent resources for classrooms, lecture halls, or community cinema's 🎬
Thread:🧵Plz RT
November 1, 2025 at 10:17 AM
I've finally got around to curating a selection of films about the #climate crisis 🎥
There's lot of mediocre climate films out there, but for me these stand out head & shoulders above the rest 🎞️
They make excellent resources for classrooms, lecture halls, or community cinema's 🎬
Thread:🧵Plz RT
There's lot of mediocre climate films out there, but for me these stand out head & shoulders above the rest 🎞️
They make excellent resources for classrooms, lecture halls, or community cinema's 🎬
Thread:🧵Plz RT
Reposted by Ambarish Karmalkar
Important pedantry. This is interesting in part because he explains it well enough that I think most laypeople will understand why the pedantry matters. Journalists should take notice!
So, I hate to be this guy, but as the director of Yale’s new program on attribution science (!?), uh, most of the commentary on Bluesky about Hurricane Melissa and climate change has been… not quite right
October 31, 2025 at 9:15 AM
Important pedantry. This is interesting in part because he explains it well enough that I think most laypeople will understand why the pedantry matters. Journalists should take notice!
Reposted by Ambarish Karmalkar
📢 New paper out!
🌊 We discuss how well mechanisms of variability in the subpolar gyre are represented in climate models, finding that models that do this best are also the models in which abrupt shifts are found 😬.
It's a technical story, so here's a simple overview 🧵
doi.org/10.5194/esd-...
🌊 We discuss how well mechanisms of variability in the subpolar gyre are represented in climate models, finding that models that do this best are also the models in which abrupt shifts are found 😬.
It's a technical story, so here's a simple overview 🧵
doi.org/10.5194/esd-...
Causal mechanisms of subpolar gyre variability in CMIP6 models
Abstract. The subpolar gyre is at risk of crossing a tipping point under future climate change associated with the collapse of deep convection. As such, tipping can have significant climate impacts; i...
doi.org
October 28, 2025 at 12:27 PM
📢 New paper out!
🌊 We discuss how well mechanisms of variability in the subpolar gyre are represented in climate models, finding that models that do this best are also the models in which abrupt shifts are found 😬.
It's a technical story, so here's a simple overview 🧵
doi.org/10.5194/esd-...
🌊 We discuss how well mechanisms of variability in the subpolar gyre are represented in climate models, finding that models that do this best are also the models in which abrupt shifts are found 😬.
It's a technical story, so here's a simple overview 🧵
doi.org/10.5194/esd-...
How little CO2 Jamaica has produced over time compared to the major polluters
October 28, 2025 at 2:37 PM
How little CO2 Jamaica has produced over time compared to the major polluters
Reposted by Ambarish Karmalkar
ICYMI, in March the US pulled out of the new fund established by wealthy nations to compensate low-income countries for loss and damage due to climate change. Despite being the largest historical emitter, the US had pledged only $17.5 million.
Melissa alone will likely cause billions in damage.
Melissa alone will likely cause billions in damage.
US exits fund that compensates poorer countries for global heating
Trump pulls out of Cop28 loss and damage deal that recognises harms done by richer, polluting economies to vulnerable nations
www.theguardian.com
October 28, 2025 at 4:02 AM
ICYMI, in March the US pulled out of the new fund established by wealthy nations to compensate low-income countries for loss and damage due to climate change. Despite being the largest historical emitter, the US had pledged only $17.5 million.
Melissa alone will likely cause billions in damage.
Melissa alone will likely cause billions in damage.
Reposted by Ambarish Karmalkar
With a central pressure down to 896mb as of 9am EDT, #Melissa has joined the elite sub-900mb group of Atlantic hurricanes... it is now one of just seven:
Wilma 2005: 882mb
Gilbert 1988: 888mb
Labor Day 1935: 892mb
Rita 2005: 895mb
Milton 2024: 895mb
Melissa 2025: 896mb
Allen 1980: 899mb
Wilma 2005: 882mb
Gilbert 1988: 888mb
Labor Day 1935: 892mb
Rita 2005: 895mb
Milton 2024: 895mb
Melissa 2025: 896mb
Allen 1980: 899mb
October 28, 2025 at 1:20 PM
With a central pressure down to 896mb as of 9am EDT, #Melissa has joined the elite sub-900mb group of Atlantic hurricanes... it is now one of just seven:
Wilma 2005: 882mb
Gilbert 1988: 888mb
Labor Day 1935: 892mb
Rita 2005: 895mb
Milton 2024: 895mb
Melissa 2025: 896mb
Allen 1980: 899mb
Wilma 2005: 882mb
Gilbert 1988: 888mb
Labor Day 1935: 892mb
Rita 2005: 895mb
Milton 2024: 895mb
Melissa 2025: 896mb
Allen 1980: 899mb
Reposted by Ambarish Karmalkar
Incidentally, the very nice schematic of cryosphere changes over both ice sheets was drawn by @jmalumbresolarte.bsky.social Tak! 🙏
New paper out today in @nature Geosciences:
The Greenlandification of Antarctica
Readcube pdf: rdcu.be/eJiqJ
New paper out today in @nature Geosciences:
The Greenlandification of Antarctica
Readcube pdf: rdcu.be/eJiqJ
The Greenlandification of Antarctica | Nature Geoscience
Climate and ice sheet processes in Antarctica increasingly reflect those observed earlier in Greenland. Applying process insights from Greenland can improve projections of future Antarctic ice and climate behaviour.
rdcu.be
October 4, 2025 at 10:00 AM
Incidentally, the very nice schematic of cryosphere changes over both ice sheets was drawn by @jmalumbresolarte.bsky.social Tak! 🙏
New paper out today in @nature Geosciences:
The Greenlandification of Antarctica
Readcube pdf: rdcu.be/eJiqJ
New paper out today in @nature Geosciences:
The Greenlandification of Antarctica
Readcube pdf: rdcu.be/eJiqJ
Reposted by Ambarish Karmalkar
Published today: our new paper showing a 44-year trend of increasing global wildfire disasters (fatalities and economic losses) due to climate change-induced extreme weather. www.science.org/doi/10.1126/...
Climate-linked escalation of societally disastrous wildfires
Climate change and land mismanagement are creating increasingly fire-prone built and natural environments. However, despite worsening fire seasons, evidence is lacking globally for trends in socially ...
www.science.org
October 2, 2025 at 6:28 PM
Published today: our new paper showing a 44-year trend of increasing global wildfire disasters (fatalities and economic losses) due to climate change-induced extreme weather. www.science.org/doi/10.1126/...
How to estimate the population of Emperor penguins in Antarctica?
Look for brown guano stains in satellite imagery.
youtu.be/CjgrhCQLOWU
Look for brown guano stains in satellite imagery.
youtu.be/CjgrhCQLOWU
Emperor penguins facing extinction? Huge 22% population drop explained | British Antarctic Survey
YouTube video by British Antarctic Survey
youtu.be
October 1, 2025 at 1:11 AM
How to estimate the population of Emperor penguins in Antarctica?
Look for brown guano stains in satellite imagery.
youtu.be/CjgrhCQLOWU
Look for brown guano stains in satellite imagery.
youtu.be/CjgrhCQLOWU
"Given emerging evidence of widening achievement gaps in other developed countries, factors that transcend national boundaries merit special consideration." www.edweek.org/policy-polit...
Student Test Scores Keep Falling. What’s Really to Blame? (Opinion)
There’s strong circumstantial evidence pointing to a particular culprit. (Hint: It’s not the pandemic.)
www.edweek.org
September 14, 2025 at 12:15 PM
"Given emerging evidence of widening achievement gaps in other developed countries, factors that transcend national boundaries merit special consideration." www.edweek.org/policy-polit...
Reposted by Ambarish Karmalkar
India's environment ministry has issued an order stating mining for critical minerals can go ahead without public hearing. Historically, these hearings are where local communities raise concerns about land rights and environmental issues
www.downtoearth.org.in/mining/criti...
www.downtoearth.org.in/mining/criti...
Critical, strategic and atomic mineral mining projects in India can now be approved without public hearing
New mining projects of atomic minerals (such as uranium, thorium), critical minerals and strategic minerals (such as rare earth elements) being started in India
www.downtoearth.org.in
September 13, 2025 at 7:18 AM
India's environment ministry has issued an order stating mining for critical minerals can go ahead without public hearing. Historically, these hearings are where local communities raise concerns about land rights and environmental issues
www.downtoearth.org.in/mining/criti...
www.downtoearth.org.in/mining/criti...
Reposted by Ambarish Karmalkar
August 31st / September 2nd
August 31, 2025 at 1:18 PM
August 31st / September 2nd
Reposted by Ambarish Karmalkar
#Wildfires in Spain have reached record emissions in just one week according to our #CopernicusAtmosphere data. Heatwaves & drought are fueling fires, forcing evacuations & worsening air quality hundreds of km away. 🔥 Read the article for details
atmosphere.copernicus.eu/spain-below-...
atmosphere.copernicus.eu/spain-below-...
August 19, 2025 at 1:34 PM
#Wildfires in Spain have reached record emissions in just one week according to our #CopernicusAtmosphere data. Heatwaves & drought are fueling fires, forcing evacuations & worsening air quality hundreds of km away. 🔥 Read the article for details
atmosphere.copernicus.eu/spain-below-...
atmosphere.copernicus.eu/spain-below-...
Addressing plastic pollution and hunger simultaneously. www.bbc.com/future/artic...
Rice, two curries and dal: The Indian cafes where you can pay in rubbish
Garbage cafes are springing up across India. The BBC visits the city of Ambikapur to find out how much impact they can really have on plastic – and people.
www.bbc.com
August 20, 2025 at 11:40 AM
Addressing plastic pollution and hunger simultaneously. www.bbc.com/future/artic...
What's behind the summer "warming hole" in parts of the contiguous US? www.cnn.com/2025/08/19/c...
The strange divide in how Americans experience summer temperatures | CNN
Average temperatures elide a complex reality: The country’s experience of hotter summers — and thus one of the most visceral aspects of climate change itself — is fractured along geographic lines.
www.cnn.com
August 19, 2025 at 7:33 PM
What's behind the summer "warming hole" in parts of the contiguous US? www.cnn.com/2025/08/19/c...
Reposted by Ambarish Karmalkar
Report on how land-use change like deforestation and conversation from agriculture to urban sprawl are making cities in one Indian state hotter. Land-use change influences the climate and its impacts are more tangible at the local level
india.mongabay.com/2025/08/a-ne...
india.mongabay.com/2025/08/a-ne...
A new analysis in a warming state links land use change to increasing heat
Tamil Nadu recently released a block-level analysis of how land use change is impacting heat across the state.
india.mongabay.com
August 6, 2025 at 9:06 AM
Report on how land-use change like deforestation and conversation from agriculture to urban sprawl are making cities in one Indian state hotter. Land-use change influences the climate and its impacts are more tangible at the local level
india.mongabay.com/2025/08/a-ne...
india.mongabay.com/2025/08/a-ne...