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-overviewhttps://bsky.app/profile/danvisioni.bsky.socialhttps://bsky.app/profile/danvisioni.bsky.social/post/3msw3cxkdys26I've thankfully not had to worry about asking for letters of recommendations for faculty positions for three years, and now that I have been asked to write some, I am suddenly reminded of the stupid, ridiculous request of some dept to ask four fucking letter of recommendation at the first stage.12 Aug 2026 21:32 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3msw3cxkdys26https://bsky.app/profile/danvisioni.bsky.social/post/3msqb5gjlsc27Great collaborative paper out with results looking at inter-model agreement in the stratospheric temperature response to Pinatubo "Assessing the stratospheric temperature response to volcanic sulfate injections by Mt. Pinatubo: insights from ISAMIP" https://acp.copernicus.org/articles/26/10997/2026/10 Aug 2026 14:00 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3msqb5gjlsc27https://bsky.app/profile/danvisioni.bsky.social/post/3mruhspxgbs2nWith Ryan O'Loughin from CUNY, we have a paper out today in the European Journal for Philosophy of Science where we ask: "When are small-scale field experiments in solar geoengineering worth pursuing?" https://link.springer.com/article/10.1007/s13194-026-00762-930 Jul 2026 12:45 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3mruhspxgbs2nhttps://bsky.app/profile/danvisioni.bsky.social/post/3mrxb46bq3c2xUncertain - how, and how much, and more importantly, what are you going to do about it? I've been always very dissatisfied with statements that say "X is uncertain" - not to mention "X is *very* uncertain". Yes, but what isn't uncertain? How do we conceptualise the specific uncertainties...31 Jul 2026 15:23 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3mrxb46bq3c2xhttps://bsky.app/profile/danvisioni.bsky.social/post/3mrvtmb2tn226Yes well here’s my coming out: I force my husband to watch Love Actually at least once every year around Christmas. [contains quote post or other embedded content]31 Jul 2026 01:48 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3mrvtmb2tn226https://bsky.app/profile/danvisioni.bsky.social/post/3mruhspxgbs2nWith Ryan O'Loughin from CUNY, we have a paper out today in the European Journal for Philosophy of Science where we ask: "When are small-scale field experiments in solar geoengineering worth pursuing?" https://link.springer.com/article/10.1007/s13194-026-00762-930 Jul 2026 12:45 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3mruhspxgbs2nhttps://bsky.app/profile/danvisioni.bsky.social/post/3mquvvbwptc26 [contains quote post or other embedded content]17 Jul 2026 23:31 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3mquvvbwptc26https://bsky.app/profile/danvisioni.bsky.social/post/3mqhfn6mhu227Lindsey is not going to read your mean tweets about him, but Mitch… ok but your average octogenarian senator clinging to their seat and on the brink of death might have their aide read it to them and be sad about it?12 Jul 2026 14:36 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3mqhfn6mhu227https://bsky.app/profile/danvisioni.bsky.social/post/3mqcpjtpwgk2jI really like @beyondmeatofficial.bsky.social (and they're constantly getting better!) but I'll never understand why they thought that what I wanted from them was "Sparkling Protein Beverages", which is all they seem to be advertising recently in their emails. Yuk.10 Jul 2026 17:50 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3mqcpjtpwgk2jhttps://bsky.app/profile/danvisioni.bsky.social/post/3mpymawvans2hAin’t no deadline like an IPCC deadline06 Jul 2026 17:24 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3mpymawvans2hhttps://bsky.app/profile/danvisioni.bsky.social/post/3mpvycosnmc2iStarting to develop some hot takes on LLM for research. Even the best model is actually very dumb at doing brainstorming, lit review, all that. Just boring word salads - I can do better while drunk (is there any other way to do lit review?). BUT there is clearly some potential for climate science:05 Jul 2026 16:22 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3mpvycosnmc2ihttps://bsky.app/profile/danvisioni.bsky.social/post/3mpvwhw2trk2iIt’s just an extreme form of climate adaptation, dear. [contains quote post or other embedded content]05 Jul 2026 15:49 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3mpvwhw2trk2ihttps://bsky.app/profile/danvisioni.bsky.social/post/3mprh3tndd22qExcuse me how was Disclosure Day SO GOOD and nobody told me omg03 Jul 2026 21:04 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3mprh3tndd22qhttps://bsky.app/profile/danvisioni.bsky.social/post/3mpgklzygyk2yMe to my husband when he shows me the 37th postcard of the day from our BirdBuddy with a cardinal looking silly eating seeds. [contains quote post or other embedded content]29 Jun 2026 13:07 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3mpgklzygyk2yhttps://bsky.app/profile/danvisioni.bsky.social/post/3mpgkepmvnc2yItaly’s always a bit late on the best global trends, so no wonder we still have old-school climate deniers. This guy was offered an entire page on a newspaper arguing there are no statistically significant changes in summertime temperatures in Italy. His own plot says there’s a 0.5C/decade trend.29 Jun 2026 13:03 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3mpgkepmvnc2yhttps://bsky.app/profile/danvisioni.bsky.social/post/3mpea4yxtik2qIf first and foremost you don’t find thousands of deaths from a heatwave heartbreaking you’re a sicko.28 Jun 2026 14:54 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3mpea4yxtik2qhttps://bsky.app/profile/danvisioni.bsky.social/post/3mp7rlubbi22dThis was a fascinating historical read. What I am curious about is that the piece seem to heavily imply that there is a counterfactual world in which the paper would have come out anyway, but be less “sexy”, hence both public policy & academic focus would have shifted to rely more on mitigation. [contains quote post or other embedded content]26 Jun 2026 20:24 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3mp7rlubbi22dhttps://bsky.app/profile/danvisioni.bsky.social/post/3mp7a7vfyhs2yhttps://news.cornell.edu/stories/2026/06/getting-warmer-slower-forest-growth-means-less-carbon-storage Good write up of Brendan’s work by the @cornelluniversity.bsky.social Chronicle “The more we look, the clearer it becomes that with further warming it will become harder for nature to keep up”26 Jun 2026 15:13 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3mp7a7vfyhs2yhttps://bsky.app/profile/danvisioni.bsky.social/post/3moqg7m2f5c25To be clear on what this means: this is exactly like if a climate deniers had taken someone’s paper using 4xCO2 experiment in a bunch of models and said “these people don’t even know if the climate would warm by 20 or 60C, they don’t understand anything about the climate!”. [contains quote post or other embedded content]20 Jun 2026 17:50 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3moqg7m2f5c25https://bsky.app/profile/danvisioni.bsky.social/post/3moorwqnc2k2wLooks like folks think it's ok to lie in an op-ed on @theguardian.com because cumulatively the authors have "100 years of climate science experience". I think science should not be misinterpreted to make a political point (even 1 I agree with), and what you see in the screenshot is totally false.20 Jun 2026 02:14 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3moorwqnc2k2whttps://bsky.app/profile/danvisioni.bsky.social/post/3mookfm5jlc2sI’m not going to link to the Guardian piece, not particularly engage with some of the things said. But as the co-chair of GeoMIP since 2019, I can tell there’s a community of scientists I’m proud to represent, that has for years called for more rigorous research https://acp.copernicus.org/articles/23/5149/2023/19 Jun 2026 23:59 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3mookfm5jlc2shttps://bsky.app/profile/danvisioni.bsky.social/post/3monw3kd4ak2w“Nobody has ever studied this carefully” said the people who spent 10 years threatening to tank the carrier of anybody daring to studying that thing carefully and systematically. I’m going to have a brain aneurysm before 40.19 Jun 2026 17:56 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3monw3kd4ak2whttps://bsky.app/profile/danvisioni.bsky.social/post/3moldv5467s25https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2026GL122759 CO₂ fertilization effect? Not so fast… Some new studies have shown that increasing Vapor Pressure Deficit seems to limit tree growth. In this new work from our group, we show for the 1st time how much this would affect future estimates of tree growth…18 Jun 2026 17:25 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3moldv5467s25https://bsky.app/profile/danvisioni.bsky.social/post/3mo7ss5olgk2qI want to be Jalen Brunson when I grow up.14 Jun 2026 03:20 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3mo7ss5olgk2qhttps://bsky.app/profile/danvisioni.bsky.social/post/3mnlndiyan223May be all be like the Knicks, punched hard in the first half, coming out barely on top, and then back with a fucking vengeance on the second half amen06 Jun 2026 02:49 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3mnlndiyan223https://bsky.app/profile/danvisioni.bsky.social/post/3mna4x6bgdk2yhttps://acp.copernicus.org/articles/26/7677/2026/ Took a while but we finally published the first multi-model radiative fording results from the Hunga Tonga Volcano Impact Model Observation Comparison Project. Roughly -0.2W/m2 at TOA, mainly from the SO₂, with the water v actually contributing to aerosol growth.01 Jun 2026 12:56 +0000at://did:plc:pb3usxus2iaboedam5nmxpfp/app.bsky.feed.post/3mna4x6bgdk2y