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/
Bordeaux, France, has now recorded more days above 40°C in 2026 alone than during the entire 105-year period from 1920 (when observations began) to 2025. This is deeply shocking.
Great article on heat stress physics. Very smart. Hats off. Entrainment‐Based Framework for Understanding Extratropical Moist Heat Extremes - Jha - 2026 - Geophysical Research Letters - Wiley Online Library agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Entrainment‐Based Framework for Understanding Extratropical Moist Heat Extremes
Dry-air entrainment in the lower free troposphere intensifies extratropical moist heat extremes Entrainment-based framework explains breakdown of moist convective neutrality during extratropical ...
agupubs.onlinelibrary.wiley.com
New preprint on the physics of land humidity using 'water tagging' simulations. Key pt: land specific humidity changes primarily controlled by water advected from ocean regions, but relative humidity changes closely tied to local processes (e.g., soil moisture) essopenarchive.org/doi/abs/10.2...
essopenarchive.org
Was new to the country, new to driving. Alone driving in rural New England late one evening, in pouring rain, and could barely see the road. Only reached my destination because I had done my homework. Unlike today, the printed maps era was also the era of kinda knowing your route before you left.
Alex Navarro@alexnavarro.bsky.social · 4w agopeople talk a lot about pre/post-internet microgenerations but let me hear from all the others in my microgeneration, the “printing maps off Mapquest” microgeneration.
NEW – Eight facts about air conditioning amid an overheated global debate | @arunacsekhar.bsky.social @joshgabbatiss.bsky.social @mollylempriere.carbonbrief.org @zekehausfather.com Read here: buff.ly/EynMeIk
Finally! An article about the AMOC circulation that isn’t just clickbait / hype, and provides some real physical insights about how the ocean works. It turns out the ocean may be far more resilient than clikbait stories suggest. A very worthwhile read! www.science.org/content/arti...
The ocean current that warms Europe may be more resilient than feared
Studies of the Atlantic's circulation find signs of both weakening and unexpected stability in the face of global warming
science.org
Unfortunately, there seems to be very little pushback from the public or from institutions. mitsloan.mit.edu/ideas-made-t...
‘AI gravity’ is pulling you toward dependency. Here’s how to push back | MIT Sloan
AI systems hold the promise of competitive advantage, but they can usher in cognitive decline among workers, says MIT Sloan School of Management’s Eric So. Learn how to protect cognitive capital.
mitsloan.mit.edu
Don’t remember the last time I experienced such relentless heat for over a month that I just did in Mumbai. www.theweek.in/news/india/2...
OPINION | From coping to institutional resilience: Addressing extreme urban heat in Indian cities
India's heat crisis demands a shift from seasonal emergency response to permanent urban resilience
theweek.in
The cooling of the stratosphere caused by rising atmospheric CO₂ is a clear sign of human influence on climate. However, the processes that determine the extent and vertical profile of this cooling were not fully understood… until now. 🧪
Stratospheric cooling and amplification of radiative forcing with rising carbon dioxide - Nature Geoscience
Higher carbon dioxide levels widen the part of the heat spectrum that can emit energy to space, cooling the stratosphere and strengthening the warming effect of this gas, according to idealized spectr...
nature.com
Hotter nights driving sustained electricity demand www.downtoearth.org.in/amp/story/en...
Heatwaves, urban heat push India’s grid into uncharted territory
India’s electricity grid is facing a structural shift as intensifying heatwaves, rapid urbanisation and rising cooling demand push power consumption to unpreced
downtoearth.org.in
With the new NMME model update, even the more conservative relative Oceanic Nino Index metric now has us roughly tied with 1998 and 2026 El Nino events: dashboard.theclimatebrink.com#enso
Compound drivers of Antarctic sea ice loss and Southern Ocean destratification Stronger westerlies drove upwelling & intense mixing, exposing sea ice to hidden deep ocean heat The result: a self-reinforcing low-ice state that may persist under continued GHG forcing www.science.org/doi/10.1126/...
Compound drivers of Antarctic sea ice loss and Southern Ocean destratification
Recent sea ice loss was initiated by ocean upwelling in East Antarctica and by radiative flux anomalies in West Antarctica.
science.org
Solar is forming an Indian 'duck curve', well, more like a 'Bactrian hump' (two hump camel). The amount of solar used during the day is really eating into coal use. Solar is big in India! 3/
Very cool @nationalacademies.org report release webinar relevant to the Palcolimate community on "Functions and Criteria for a New Center for Paleoenvironmental Records of Extreme Events". April 29. Sign up! www.nationalacademies.org/projects/DEL...
nationalacademies.org
Abstract: The case is made that machine-learning statistical estimation neither can nor should be expected to supplant physics-based simulation for weather forecasting. journals.ametsoc.org/view/journal...
journals.ametsoc.org
"Understanding where confidence is justified, and where uncertainties remain, is important for interpreting current El Niño headlines responsibly." www.ecmwf.int/en/about/med...
ecmwf.int
We now have 13 different models with 637 different ensemble members with El Niño forecasts out through at least September 2026. They suggest a best estimate of 2.2C for September; interestingly ECMWF (which was seen as particularly hot when it came out) is right around the middle of the pack:
No matter how you feel about this mission with so much else going on, you can’t deny that it’s offering some pretty introspective views of our place in the vastness of space
NASA isn't why the US doesn't have universal healthcare, or a social safety net. The US doesn't have those things because politicians with the power to provide them choose specifically not to (with varying levels of support from voters). Enthusiasm for human spaceflight doesn't drive that choice.
Climate coverage slowly disappearing from US mainstream media grist.org/language/glo...
The planet is overheating. Why is the news looking away?
Since 2021, global media coverage of climate change has dropped 38 percent. Blame wars, political chaos, and Jeffrey Epstein.
grist.org
Wow! And you can barely see the atmosphere. It's so thin; you can feel how fragile it is.
Katie Mack@astrokatie.com · 4mo agoMore context on this #Artemis II image: * This is the night side, lit by moonlight. You can see city lights in Spain & Portugal, & a sliver of day at lower right * The Sun is entirely behind Earth, which makes it a kind of solar eclipse, but w/ Earth doing the eclipsing instead of the Moon: ☀️🌍🚀🌕
More context on this #Artemis II image: * This is the night side, lit by moonlight. You can see city lights in Spain & Portugal, & a sliver of day at lower right * The Sun is entirely behind Earth, which makes it a kind of solar eclipse, but w/ Earth doing the eclipsing instead of the Moon: ☀️🌍🚀🌕
Ultimately, our results (in this high-resolution model ensemble) highlight the benefits of early climate mitigation for reducing extreme precipitation events, while also underscoring the complexity of regional responses, which are shaped by seasonality, local-scale processes, and other factors.
"The real threat is a slow, comfortable drift toward not understanding what you're doing. Not a dramatic collapse. Not Skynet. Just a generation of researchers who can produce results but can't produce understanding."
Minas Karamanis@minaskar.bsky.social · 4mo agoHey, I wrote a thing about AI in astrophysics ergosphere.blog/posts/the-ma...
There are now 10 toilets in Space International Space Station: 4 Crew Dragon Docked at ISS: 1 Soyuz Docked at ISS: 1 Tiangong Space Station: 2 Shenzhou Docked at TSS: 1 Artemis II on way around Moon: 1 This will be the first time a toilet has left low earth orbit!
Maybe Bluesky will get mad at me for saying this, but this is a bizarre headline because if you actually read the article it says the exact opposite. Please consider reading the whole article before doom-sharing the irresponsible headline.
Robb Edwards 🌱@robedwards1.bsky.social · 4mo agoScientists warn that the Gulf Stream is shifting north, which means an ocean current collapse is imminent: www.earth.com/news/gulf-st...