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Jennifer Francis PhD

@jfrancisclimate.bsky.social
378 followers 431 following 23 posts

Senior Scientist @Woodwell Climate Research Center in Falmouth MA USA. Researching connections between the climate crisis and extreme weather, avid science communicator. JenniferAFrancis.com Personal: Sailor, mom, scuba diver...BE NICE

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Jennifer Francis PhD @jfrancisclimate.bsky.social · 23/01/2026
Just as the stratospheric polar vortex once again stretches southward over North America, boosting a frigid Arctic airmass and fueling a massive storm, our new paper is out: "Are Stratospheric Polar Vortex Disruptions What They Seem?" www.woodwellclimate.org/are-stratosp...
woodwellclimate.org
Are stratospheric polar vortex disruptions what they seem? - Woodwell Climate
Are stratospheric polar vortex disruptions what they seem? A weak or distorted stratospheric polar vortex (SPV) is often associated with severe winter weather in Northern Hemisphere continents. Tradit...
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Jennifer Francis PhD @jfrancisclimate.bsky.social · 17/12/2025
This move is based on ignorance, and even worse, disdain of knowledge…maybe fear of knowledge.
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Jennifer Francis PhD @jfrancisclimate.bsky.social · 14/11/2025
CO2 concentrations haven’t been this high in at least 3 MILLION years. The Earth’s temperature hasn’t yet caught up. We need to quickly and dramatically reduce CO2 emissions, but last year’s were the highest ever.
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Jennifer Francis PhD @jfrancisclimate.bsky.social · 02/08/2025
Our new study linking cold-air outbreaks in the U.S. winter with disruptions in the stratospheric polar vortex: www.woodwellclimate.org/cold-spell-o...
woodwellclimate.org
Cold-air outbreaks continue in a warming world - Woodwell Climate
A new paper from climate researchers highlights the impacts of stratospheric polar vortex behavior on cold spells across the U.S.
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Michael E. Mann @michaelemann.bsky.social · 16/06/2025
"Study finds planetary waves linked to wild summer weather have tripled since 1950" | Great piece by @borenbears.bsky.social for @apnews.com on our new @pnas.org article (w/ thoughtful comments from @jfrancisclimate.bsky.social): vancouver.citynews.ca/2025/06/16/s...
vancouver.citynews.ca
Study: Climate change tripled planetary waves since 1950
Climate change has tripled the frequency of atmospheric wave events linked to extreme summer weather in the last 75 years.
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Stand Up for Science! @standupforscience.net · 10/05/2025
HAPPY 75th, NSF! We’re celebrating this milestone by highlighting some of NSF’s most transformative accomplishments—innovations that have shaped our world and continue to drive progress in health, technology, the environment, and beyond. Read on 🧵(1/11):
A chocolate cake with red and white decorations and lit candles shaped as the number 75. Bold text reads: ‘The NSF Turns 75 Today. What has it done over the past 7 decades?’ The background is a celebratory red with a spray-paint texture.
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Kai Ryssdal @kairyssdal.bsky.social · 10/05/2025
I just really need everybody to understand that everything that’s happening in and to the global economy now (and all the businesses and people in it) is the entirely predictable result of the intentional decisions of one guy who doesn’t understand how the global economy works.
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Jennifer Francis PhD @jfrancisclimate.bsky.social · 14/03/2025
Truly striking how the Northern Hemisphere dominates this signal. Even locations with few freezing days have seen large declines.
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Woodwell Climate Research Center @woodwellclimate.bsky.social · 14/02/2025
Climate Science for Solutions Now more than ever.” Join us www.woodwellclimate.org/email-signup/
woodwellclimate.org
Science for the world. And for you. - Woodwell Climate
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Woodwell Climate Research Center @woodwellclimate.bsky.social · 14/02/2025
A message from our president and CEO, Dr. Max Holmes:
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Guy Walton..."The Climate Guy" @climateguyw.bsky.social · 31/01/2025
Main Topic: More on a Climate Changed Polar Vortex Affecting Extreme Cold via @washingtonpost.com On The Extreme Temperature Diary FRU- 1/31/2025 guyonclimate.com +new #climate #weather + rec temp reports via @extremetemps.bsky.social @jfrancisclimate.bsky.social @doctorvive.bsky.social
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Permafrost Pathways @permafrostpathways.bsky.social · 21/01/2025
🧊🔥 New paper @natclimchange.bsky.social: After millennia as a carbon deep-freezer for the planet, a third of the Arctic-boreal zone is now a CO2 source to the atmosphere. The int’l research team was led by @annvirkk.bsky.social ⬇️ Learn more: permafrost.woodwellclimate.org/after-millen...
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Jennifer Francis PhD @jfrancisclimate.bsky.social · 15/01/2025
Wildfires? Not so much anymore. At least not in the sense they’re natural. The fingerprints of human-caused climate change are all over them. Maybe firestorms is a more accurate term.
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Jennifer Francis PhD @jfrancisclimate.bsky.social · 15/01/2025
The fire, flood, hurricane, heat wave, drought, storm surge, or weather whiplash may not have disrupted your community yet, but we’re all paying handsomely for the climate crisis.
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Peter Gleick @petergleick.bsky.social · 14/01/2025
“To say CA has always had wildfires is a classic form of climate denial. For years we've heard, ‘The climate has always changed...' that’s just totally disingenuous. The question is whether climate change is making those things worse. The answer is yes." www.yahoo.com/news/yes-wil...
yahoo.com
Yes, wildfires have always happened in California, but climate change is making them worse
As the narrative of the Southern California wildfires has shifted to identifying the causes behind what could prove to be the most expensive natural disaster in U.S. history, a common refrain has emer...
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Jennifer Francis PhD @jfrancisclimate.bsky.social · 13/01/2025
Evidence is mounting that rapid Arctic warming and melting is contributing to worsening fires in western states. For starters: www.nature.com/articles/s41... www.mdpi.com/1999-4907/8/... pmc.ncbi.nlm.nih.gov/articles/PMC...
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Peter Gleick @petergleick.bsky.social · 11/01/2025
Any continued #climate denial by politicians or pundits or corporations or self-serving billionaires is no longer just embarrassing, ignorant, or corrupt. It's now increasingly criminal.
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John Schwartz @jswatz.bsky.social · 11/01/2025
“We sound like a broken record but only because the records keep breaking,” said Gavin Schmidt, director of the NASA Goddard Institute for Space Studies, which monitors global temperatures. “They will continue to break until we get emissions under control.” www.nytimes.com/2025/01/10/c...
nytimes.com
The California Wildfires Are the Latest Disaster Supercharged by Climate Change
Extreme weather events — deadly heat waves, floods, fires and hurricanes — are the consequences of a warming planet, scientists say.
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Peter Gleick @petergleick.bsky.social · 11/01/2025
If you think slowing or stopping #climate change is too expensive, you have it backwards. Failing to slow or stop #climatechange is what's expensive. www.bbc.com/news/article...
bbc.com
LA wildfire damages set to cost record $135bn
Some of the most expensive properties in the US have been wiped out by the fires.
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Eric Holthaus @ericholthaus.com · 08/01/2025
A reminder that Los Angeles had its hottest summer in history last year. Southern California has received just 2% of "normal" rainfall during the current "rainy" season. These fires are a direct result of a warming & drying atmosphere caused by burning fossil fuels. We are in a climate emergency.
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Jennifer Francis PhD @jfrancisclimate.bsky.social · 08/01/2025
Yep, our Earth is warming at the hand of humans (it would be cooling if we weren’t here), but frigid spells are still a thing: x.com/bostonglobe/...
x.com
x.com
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Jon Cooper @joncooper-us.bsky.social · 19/12/2024
The puppet master and his puppet.
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Joshua Basseches @joshuabasseches.bsky.social · 14/12/2024
Thank you, Inflation Reduction Act! www.eenews.net/articles/ris...
eenews.net
Rising US solar panel production can nearly meet domestic demand
A drastic increase in manufacturing capacity puts the country on track to produce enough solar modules for American projects.
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Kai Kupferschmidt @kakape.bsky.social · 14/12/2024
Sadly, it’s a good time to once again share this amazing infographic that we ran at @science.org more than 7 years ago 🧪 #IDsky www.science.org/content/arti...
science.org
Here's the visual proof of why vaccines do more good than harm
See year by year how vaccines beat back nine dangerous infectious diseases
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Dr. Jonathan Foley @globalecoguy.bsky.social · 13/12/2024
Here’s more on why I oppose using taxpayer funds to deploy DAC technology. drawdown.org/insights/sto...
drawdown.org
Stop giving Big Oil a carbon fig leaf
The Biden Administration is backing industrial carbon capture schemes that overwhelmingly benefit Big Oil – bolstering their bottom lines and extending a PR lifeline that ensures they can continue pol...
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Jon Cooper @joncooper-us.bsky.social · 14/12/2024
THIS is how it’s done, folks.
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Dr. Jonathan Foley @globalecoguy.bsky.social · 13/12/2024
I think Direct Air Capture (DAC) is nowhere near ready to deploy. It’s too expensive, faces huge engineering challenges, and diverts money and attention from better climate solutions. Let’s stop giving fossil fuels a fig leaf on the taxpayer’s dime. news.mongabay.com/2024/12/dire...
news.mongabay.com
Direct air capture climate solution faces harsh criticism, steep challenges
Pulling carbon dioxide directly from the air with giant vacuum-like devices is an enticing solution to the climate crisis, with governments and industry funneling billions of dollars into direct air c...
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Dr. Jonathan Foley @globalecoguy.bsky.social · 12/12/2024
I like things science has done to save millions and millions of lives… Vaccines. Clean water. Sanitation. Pasteurization. Fluoride. Next up? Clean air, a stable climate, healthy watersheds, and thriving ecosystems.
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Jennifer Francis PhD @jfrancisclimate.bsky.social · 11/12/2024
Here are two press releases for our new paper: www.woodwellclimate.org/new-study-ar... news.lincoln.ac.uk/2024/12/11/c...
woodwellclimate.org
Could Arctic Warming mean More Cold Spells? - Woodwell Climate
A new study finds that despite abnormal warmth globally severe winter cold-spells will become more frequent across Northern Hemisphere.
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Berkeley Earth @berkeleyearth.org · 10/12/2024
Today at #AGU24: In a session co-chaired by BE's @hausfath.bsky.social, @rarohde.bsky.social will be diving into the factors, both well-defined and more unexpected, that contributed to 2023's record-setting ("gobsmackingly bananas") extreme heat. Find us at: 📍GC23K-02 / Salon A ⏰ 14:21 - 14:33
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Jennifer Francis PhD @jfrancisclimate.bsky.social · 10/12/2024
Our new study out today: Despite global and especially Arctic warming, winter cold spells are far from dead. We summarize recent studies and add new analysis: iopscience.iop.org/article/10.1....
iopscience.iop.org
Influence of high-latitude blocking and the northern stratospheric polar vortex on cold-air outbreaks under Arctic amplification of global warming - IOPscienceSearch
Influence of high-latitude blocking and the northern stratospheric polar vortex on cold-air outbreaks under Arctic amplification of global warming, Edward Hanna, Jennifer Francis, Muyin Wang, James E Overland, Judah Cohen, Dehai Luo, Timo Vihma, Qiang Fu, Richard J Hall, Ralf Jaiser, Seong-Joong Kim, Raphael Köhler, Linh Luu, Xiaocen Shen, Irene Erner, Jinro Ukita, Yao Yao, Kunhui Ye, Hyesun Choi, Natasa Skific
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John Schwartz @jswatz.bsky.social · 08/12/2024
This is how to do it, kids: Home insurance is now a climate story. Put it on the front, and put "climate change" at the top. Especially now that deniers will control the federal and state government. www.houstonchronicle.com/projects/hom...
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Zack Labe @zacklabe.com · 05/12/2024
#Arctic air temperature rank by month over the satellite era - now updated through November 2024. Nearly all of the top 10 warmest years per each month are since 2000. + Ranks: 1=warmest (red), 45/46=coldest (blue) + Download visual: zacklabe.com/arctic-tempe...
Heat map-style graphic showing monthly air temperature rankings in the Arctic at the 925 hPa level for each month from January 1979 to November 2024. There is a long-term warming trend evident in each month. Blue shading is shown for colder months, and red shading is shown for warmer months. A yellow number is shown for each grid box to display the actual temperature ranking. November was the 6th warmest November on record.
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Zack Labe @zacklabe.com · 05/12/2024
As a reminder, land areas (where we live) are warming around twice as fast as the oceans. Subsequently, most of us are 'experiencing' temperatures rising faster than the global mean record. Data from NASA GISTEMPv4: data.giss.nasa.gov/gistemp/ ⚒️🧪
Line graph time series showing global land surface temperatures (90°S to 90°N) in a red line and global mean surface temperatures (90°S to 90°N) in a blue line. Temperatures are averaged annually from 1900 through 2023. Line trends are also shown from 1990 to 2023. The land is warming faster than the global mean.
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Leah Stokes @leahstokes.bsky.social · 05/12/2024
The United States is now producing enough domestic solar to cover nearly all annual deployment. That's what policy can do, folks! And a majority of these jobs are in Republican districts.
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Taryn O’Neill @tarynoneill.bsky.social · 04/12/2024
“Climate change is Everything change.” — Margaret Atwood 🌏
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Jennifer Francis PhD @jfrancisclimate.bsky.social · 04/12/2024
It’s hard for me to believe that the moderate La Niña can compete with raging marine heat waves across most of the N. Pacific and N. Atlantic in influencing N. America’s weather this winter. Thoughts? www.tropicaltidbits.com/analysis/oce...
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JoJoFromJerz @jojofromjerz.bsky.social · 25/11/2024
Yup.
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Jennifer Francis PhD @jfrancisclimate.bsky.social · 20/11/2024
Mother Nature’s fury is spectacular!
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Kristen Panthagani, MD, PhD @kmpanthagani.bsky.social · 15/11/2024
I would love to tell you about the times vaccines prevented me from getting sick, but every time it happens, I don’t notice. I just keep feeling well. Neither do you. Public health, when it’s working, is invisible.
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Jennifer Francis PhD @jfrancisclimate.bsky.social · 16/11/2024
The Arctic's Uncertain Future: eos.org/features/the... by Grace van Deelen at AGU
eos.org
The Arctic's Uncertain Future - Eos
Over the next century, the Arctic will change and look much different than it does today. Just how different is still unknown.
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Jennifer Francis PhD @jfrancisclimate.bsky.social · 15/11/2024
It surprises me there's so much discussion about this developing weak La Nina and mostly crickets about the raging marine heat waves in the NW Pacific, across the entire N. Atlantic, and much of the Arctic that are sure to have major influences on weather patterns around the N. Hemisphere...
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