Dan Visioni
@danvisioni.bsky.social
Climate scientist studying aerosols, chemistry, radiation, climate & society from Volcanoes 🌋and Climate Intervention. Assistant Professor at Cornell EAS, from 🇮🇹proudly🏳️🌈 More at https://dan-visioni.github.io/ and https://www.wcrp-climate.org/ci-overview
I objectively can’t find anything more nuanced than this sorry journalist friends
February 11, 2026 at 6:55 PM
I objectively can’t find anything more nuanced than this sorry journalist friends
Today I spent some time just sitting in the Damon Room at the Mesa Labs, staring at the wall of honors, where so many of NCAR accomplishments are memorialized. So much expertise, so much brilliance, so much willingness to serve. Coming here is always the best way of finding reasons to keep fighting.
February 9, 2026 at 12:30 AM
Today I spent some time just sitting in the Damon Room at the Mesa Labs, staring at the wall of honors, where so many of NCAR accomplishments are memorialized. So much expertise, so much brilliance, so much willingness to serve. Coming here is always the best way of finding reasons to keep fighting.
Wonderful spending seven full days at one of the places I hold most dear in my heart, #NCAR, for three different workshops (two CESM winter meetings, one I help manage as co-chair of the Whole Atmosphere Working Group, and a mid-project meeting with the Planetary Sunshade Foundation)…
February 9, 2026 at 12:30 AM
Wonderful spending seven full days at one of the places I hold most dear in my heart, #NCAR, for three different workshops (two CESM winter meetings, one I help manage as co-chair of the Whole Atmosphere Working Group, and a mid-project meeting with the Planetary Sunshade Foundation)…
Fellas, at which point of the timeline are we when the vanilla hot gay couples on Facebook with normally just cheesy shirtless reels uses poly to bait you into abolishing ICE?
January 29, 2026 at 2:26 AM
Fellas, at which point of the timeline are we when the vanilla hot gay couples on Facebook with normally just cheesy shirtless reels uses poly to bait you into abolishing ICE?
Main finding is that, overall, these feedback balance out and result in changes that are independent of injection rates: if you aim to cool more, you don't end up with worse or better health outcomes (but regionally this varies). Air quality is complicated and not always fully represented in ESMs...
January 27, 2026 at 5:10 PM
Main finding is that, overall, these feedback balance out and result in changes that are independent of injection rates: if you aim to cool more, you don't end up with worse or better health outcomes (but regionally this varies). Air quality is complicated and not always fully represented in ESMs...
We looked at various drivers, including cooling-driven surface O3 changes, drivers of changes in particulate matter, and internal variability, combined with up to date exposure–response functions to understand the ultimate impacts.
January 27, 2026 at 5:10 PM
We looked at various drivers, including cooling-driven surface O3 changes, drivers of changes in particulate matter, and internal variability, combined with up to date exposure–response functions to understand the ultimate impacts.
Our review is now live!
We have provided a large, comprehensive take of not just what we know, but also what we still need to know, and how, about how marine ecosystems could be affected by marine CDR and by Sunlight Reflection Methods (SRM). agupubs.onlinelibrary.wiley.com/doi/10.1029/...
We have provided a large, comprehensive take of not just what we know, but also what we still need to know, and how, about how marine ecosystems could be affected by marine CDR and by Sunlight Reflection Methods (SRM). agupubs.onlinelibrary.wiley.com/doi/10.1029/...
January 14, 2026 at 5:48 PM
Our review is now live!
We have provided a large, comprehensive take of not just what we know, but also what we still need to know, and how, about how marine ecosystems could be affected by marine CDR and by Sunlight Reflection Methods (SRM). agupubs.onlinelibrary.wiley.com/doi/10.1029/...
We have provided a large, comprehensive take of not just what we know, but also what we still need to know, and how, about how marine ecosystems could be affected by marine CDR and by Sunlight Reflection Methods (SRM). agupubs.onlinelibrary.wiley.com/doi/10.1029/...
I mean it will be personal, and I said, I wish the title was clearer, but the article itself does hammer this point home:
January 5, 2026 at 1:19 AM
I mean it will be personal, and I said, I wish the title was clearer, but the article itself does hammer this point home:
2025 was a weird year with its ups and downs, and its big fights and tears and lots of what I think is valuable work, and I said yes to many things I shouldn’t have, but I guess above all it was when I ended up on stage with NDT and on his podcast and we partook of his alcohol stash after.
January 1, 2026 at 4:49 AM
2025 was a weird year with its ups and downs, and its big fights and tears and lots of what I think is valuable work, and I said yes to many things I shouldn’t have, but I guess above all it was when I ended up on stage with NDT and on his podcast and we partook of his alcohol stash after.
Just hopping in here to brag about my best gift this year courtesy of my mom. Happy holidays y’all!
December 25, 2025 at 8:49 PM
Just hopping in here to brag about my best gift this year courtesy of my mom. Happy holidays y’all!
The Pelicans decided to prove you wrong and now there’s an overtime!
December 19, 2025 at 3:31 AM
The Pelicans decided to prove you wrong and now there’s an overtime!
Good to be here amongst family. @ncar-ucar.bsky.social
December 18, 2025 at 7:01 PM
Good to be here amongst family. @ncar-ucar.bsky.social
Just published to wrap up the year: “Response of Tipping Elements to Different Strategies of Stratospheric Aerosol Injection”
We analyzed the response of various climate metrics relevant to a set of climate tipping element under SSP2-4.5 and under a set of SAI scenarios modeled using CESM2.
We analyzed the response of various climate metrics relevant to a set of climate tipping element under SSP2-4.5 and under a set of SAI scenarios modeled using CESM2.
December 2, 2025 at 2:50 PM
Just published to wrap up the year: “Response of Tipping Elements to Different Strategies of Stratospheric Aerosol Injection”
We analyzed the response of various climate metrics relevant to a set of climate tipping element under SSP2-4.5 and under a set of SAI scenarios modeled using CESM2.
We analyzed the response of various climate metrics relevant to a set of climate tipping element under SSP2-4.5 and under a set of SAI scenarios modeled using CESM2.
When I say you’re completely making this up to have a fictional argument with me about something I didn’t say, I mean it. I have a deep respect for you and your work and I’ve always tried to engage politely with you. If you’re not interested in doing the same and want a boogie-man, F off however.
November 30, 2025 at 2:27 AM
When I say you’re completely making this up to have a fictional argument with me about something I didn’t say, I mean it. I have a deep respect for you and your work and I’ve always tried to engage politely with you. If you’re not interested in doing the same and want a boogie-man, F off however.
Thanks Ben, was a pleasure! FWIW, today's my last class in my Climate Dynamics course (because I'm leaving for the IPCC LAM meeting Saturday) and it's also the only one where we discuss SRM and its potential problems, so this is my last slide for the day...
November 24, 2025 at 4:28 PM
Thanks Ben, was a pleasure! FWIW, today's my last class in my Climate Dynamics course (because I'm leaving for the IPCC LAM meeting Saturday) and it's also the only one where we discuss SRM and its potential problems, so this is my last slide for the day...
I just finished this fantastic trilogy of 80s feminist sci-fi (I’d never heard about before going to my local bookstore!) that explores a future world where the 19th amendment has been repelled [then many wacky things happen in pure 80s sci-fi style]. A good reminder of how flimsy progress is..
November 6, 2025 at 2:04 PM
I just finished this fantastic trilogy of 80s feminist sci-fi (I’d never heard about before going to my local bookstore!) that explores a future world where the 19th amendment has been repelled [then many wacky things happen in pure 80s sci-fi style]. A good reminder of how flimsy progress is..
They do to their investors - here’s from their pitch deck from last year…
October 25, 2025 at 3:01 AM
They do to their investors - here’s from their pitch deck from last year…
I’m sure is just a coincidence, but the Syracuse Orchestra today is playing Beethoven’s Seventh, which premiered at a concert celebrating Napoleon’s defeat. He dedicated the Third to Napoleon as a champion of liberty, but ripped the dedication from the manuscript when he declared himself Emperor.
October 19, 2025 at 12:17 AM
I’m sure is just a coincidence, but the Syracuse Orchestra today is playing Beethoven’s Seventh, which premiered at a concert celebrating Napoleon’s defeat. He dedicated the Third to Napoleon as a champion of liberty, but ripped the dedication from the manuscript when he declared himself Emperor.
This is how I see that convo... 😆
October 17, 2025 at 3:22 PM
This is how I see that convo... 😆
I just finished reading “The Terraformers” by @annaleen.bsky.social and it made me so happy I need to share it here. It is rare to find such forward-looking, powerful sci-fi that manages to be hopeful about humanity while not shying away from its problems.
October 4, 2025 at 9:38 PM
I just finished reading “The Terraformers” by @annaleen.bsky.social and it made me so happy I need to share it here. It is rare to find such forward-looking, powerful sci-fi that manages to be hopeful about humanity while not shying away from its problems.
Out as preprint, we have some very interesting results looking at the radiative forcing impacts of the 2022 Hunga eruption. Based on the outcomes of the related OMIP, with many models from all over the world participating in this effort, we find a robust cooling signal from the Hunga volcanic plume.
September 5, 2025 at 2:00 PM
Out as preprint, we have some very interesting results looking at the radiative forcing impacts of the 2022 Hunga eruption. Based on the outcomes of the related OMIP, with many models from all over the world participating in this effort, we find a robust cooling signal from the Hunga volcanic plume.
Nothing. You can spend the whole day clicking every link in the CGD website and you won’t find the acronym spelled out anywhere… www.cgd.ucar.edu/about/missio...
August 25, 2025 at 2:20 AM
Nothing. You can spend the whole day clicking every link in the CGD website and you won’t find the acronym spelled out anywhere… www.cgd.ucar.edu/about/missio...
Our paper exploring in depth the potential response of the Atlantic Meridional Circulation (AMOC) to Stratospheric Aerosol Injections led by Ewa Bednarz at NOAA CSL is now available online!
Check out the paper here: agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Check out the paper here: agupubs.onlinelibrary.wiley.com/doi/10.1029/...
August 21, 2025 at 3:42 PM
Our paper exploring in depth the potential response of the Atlantic Meridional Circulation (AMOC) to Stratospheric Aerosol Injections led by Ewa Bednarz at NOAA CSL is now available online!
Check out the paper here: agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Check out the paper here: agupubs.onlinelibrary.wiley.com/doi/10.1029/...