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Allison Crimmins

@acrimmins.bsky.social
8.2K followers 1.5K following 106 posts

Lady who climates. Executive Director for Industry Proving Ground at NOAA: Director of the Fifth National Climate Assessment. View my own. She/her.

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Reposted by Allison Crimmins
Bob Kopp @bobkopp.net · 22/09/2026
NEW PAPER: In a new paper, jointly published in @agu.org Earth's Future & @ametsoc.org BAMS, and co-led by Melissa Kenney, @costasamaras.com and me, 175 authors outline priorities to guide the future of scientific assessments of climate change in the United States. 🧵
doi.org
Research Priorities for Robust Climate Assessments in the United States
A network of climate assessments plays a critical role in synthesizing the state of science to support evidence-based decision-making To support future U.S. and sub-national climate assessments, ...
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Reposted by Allison Crimmins
Bob Kopp @bobkopp.net · 08/09/2026
A comment on this attempt to amend a National Climate Assessment with an unsigned, unreviewed, LLM-authored technical note:
bobkopp.net
Comment on proposed amendment to the Fifth National Climate Assessment
The proposed amendment should be withdrawn in its entirety…. It does not provide a scientifically sound, adequately documented, or procedurally appropriate basis for modifying NCA5. Questions regardin...
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Allison Crimmins @acrimmins.bsky.social · 18/08/2026
Join the @NOAANCEI 2026 Industry Partnerships Summit! You can register to join us here! bit.ly/NOAAIndustrySummit2026
A flyer highlighting NOAA's Industry Partnerships Summit on Sept 1-3
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Costa Samaras @costasamaras.com · 18/08/2026
U.S. taxpayers invested in the capabilities of NOAA over decades. Now a lot of that capability is at risk. In the second half of @aohnsman.bsky.social’s article in @forbes.com, I talked about why NOAA is an essential public service. www.forbes.com/sites/curren...
forbes.com
EV, Battery Sales Help Q2 Cleantech Investment Rebound
This week’s Current Climate newsletter also looks at big funds flowing into long-duration battery makers and the impact of a big proposed cut to NOAA’s budget.
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Allison Crimmins @acrimmins.bsky.social · 11/08/2026
Wait I’ve seen this movie.
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Allison Crimmins @acrimmins.bsky.social · 17/07/2026
Ugh too soon Onion
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Allison Crimmins @acrimmins.bsky.social · 17/07/2026
Excited for the launch of Talking Climate Collaborative, a new initiative equipping trusted voices with the research, tools, and connections to have more effective climate conversations. Check it out: talkingclimate.com
talkingclimate.com
Talking Climate Collaborative
Empowering the messengers people already trust.
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Reposted by Allison Crimmins
Alex Barron @alexrbarron.bsky.social · 13/07/2026
COMMENT DEADLINE TODAY! If you are a US-based researcher, check what your prof. societies/orgs are saying about this rule. Even if you just pick one provision and write a paragraph w/ your experience, you can be part of collectively making a difference. (me: a former regulator). wapo.st/4w3O7vQ
wapo.st
Researchers worry a Trump rule could end U.S. scientific dominance
Research organizations warn a proposed rule for federal grants would upend the medical and technological advances that set U.S. science apart.
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Allison Crimmins @acrimmins.bsky.social · 01/06/2026
Congrats @capitalweather.bsky.social !
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Allison Crimmins @acrimmins.bsky.social · 27/05/2026
Sharing 3 beautiful storymaps developed by NOAA's National Centers for Environmental Information that depict stories of local resilience to environmental challenges across Alaska. The first is Cordova, Alaska: Extreme Precipitation Meets Historic Infrastructure storymaps.arcgis.com/stories/8224...
storymaps.arcgis.com
Cordova, Alaska
Extreme Precipitation Meets Historic Infrastructure
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Allison Crimmins @acrimmins.bsky.social · 20/05/2026
Tilting at RCPs :)
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Allison Crimmins @acrimmins.bsky.social · 19/05/2026
Co-developed with architects and engineers, NOAA recently launched the Typical Meteorological Year (TMY) data tool with both historical and future climate projections. Helping architects and engineers design for today’s and tomorrow’s climate = science -> action! www.ncei.noaa.gov/news/noaa-pr...
ncei.noaa.gov
NOAA Provides Architects and Engineers Crucial Weather Data
On April 13 2026, NOAA’s National Centers for Environmental Information (NCEI) released the Typical Meteorological Year (TMY) product to the U.S. public.
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Reposted by Allison Crimmins
David Roberts @volts.wtf · 18/04/2026
All right, this piece has triggered me so I have to yell a bit (though this is bluesky, so I realize I'm just preaching at the choir):
nytimes.com
The Inside Story of Five Days That Remade the Supreme Court
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Allison Crimmins @acrimmins.bsky.social · 23/03/2026
Calling all youth climate artists - especially high school and undergrads in the MD/DC area- see this exciting call for art (with prizes!) #climate #nature #art www.crowsnestbaltimore.com/claiming-the...
crowsnestbaltimore.com
Claiming the Future | Crow's Nest Bmore
High School Students-- Apply to be in our May/June exhibit!
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Allison Crimmins @acrimmins.bsky.social · 19/03/2026
I remain extremely proud of NCA5-- I'm proud of the process, the content, and the hundreds of people who volunteered their time and expertise over many years to make it happen. The NCA is a true reflection of gold standard science. Platinum even.
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Allison Crimmins @acrimmins.bsky.social · 05/03/2026
Ooh! Looks what available for public comment! Go Nature Record Team! A draft of the first holistic assessment of nature in the U.S. is now open for feedback through May 30. Tell us what we’re missing, what you disagree with, and what changes you’re seeing in your community. naturerecord.org.
naturerecord.org
The Nature Record
Now it’s our turn to shape what comes next. A new project. A mission years in the making.
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Bob Kopp @bobkopp.net · 01/03/2026
One year in the federal assault on climate science — a review and prospective
newrepublic.com
Trump Is Attacking Climate Science. Scientists Are Fighting Back.
It’s easy, looking at the past year, to see the damage the administration has done. But researchers are also stepping up, trying to fill the gaps.
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Allison Crimmins @acrimmins.bsky.social · 12/02/2026
Greenhouse gases endanger human health and welfare
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Gretchen Goldman, PhD @gretchentg.bsky.social · 31/01/2026
Today we won. A U.S. District Court ruled that the administration violated federal law when it secretly convened a group of climate contrarians to produce a thoroughly debunked report to overturn the Endangerment Finding. The science still matters. We won't stop. www.nytimes.com/2026/01/30/c...
nytimes.com
A Secret Panel to Question Climate Science Was Unlawful, Judge Rules
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Allison Crimmins @acrimmins.bsky.social · 28/01/2026
It’s a graph. But it’s also people. Real people who dedicated years of their lives to making the world a better place. Our colleagues, our neighbors, our friends.
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Allison Crimmins @acrimmins.bsky.social · 28/01/2026
Happening today: www.linkedin.com/posts/philli...
linkedin.com
What We're Hearing as The Nature Record Takes Shape | Phillip Levin
Earlier this month, we held a public webinar introducing The Nature Record, and the conversation was thoughtful, generous, and full of important questions. My latest Substack post reflects what we’re...
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Marcus C Sarofim @marcusmarcusrc.bsky.social · 26/01/2026
I just posted the second in my Endangerment substack series: thesaraphreport.substack.com/p/did-epa-ge...
thesaraphreport.substack.com
Did EPA Get the Climate Science Right in 2009?
Spoiler Alert: Yes, we did.
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Allison Crimmins @acrimmins.bsky.social · 25/01/2026
A must follow!
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Pam McElwee @pammcelwee.bsky.social · 23/01/2026
My colleague @bobkopp.net has a nice thread rundown of the many problems and illegal actions of the Dept of Energy Climate Working Group report based on the emails that came out yesterday from @envdefensefund.bsky.social lawsuit: www.edf.org/media/newly-... I would just add a few things re NCA5 1/
edf.org
Newly Disclosed Records Show Trump Administration’s Unlawful Actions Related to Secretly Formed “Climate Working Group”
The records are part of more than 68,000 pages of records obtained by EDF and the Union of Concerned Scientists as as the result of a lawsuit.
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Allison Crimmins @acrimmins.bsky.social · 05/01/2026
Join us this Thursday as NOAA demos three new and improved environmental data products being co-developed with the #insurance and #reinsurance sector that help users assess risk, improve critical decision-making, and build resilience! You can register here: lnkd.in/et2CyxAN
Flyer announcing NOAA NCEI Insurance Tools Cafe on January 8, 2026 11-12:30 ET
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Allison Crimmins @acrimmins.bsky.social · 09/12/2025
Looking forward to moderating a great discussion on how the retail, insurance/ reinsurance, and architecture and engineering industries are using NOAA's weather and climate data to guide decision-making and build resilience. Hope you can join us! #AGU25 agu.confex.com/agu/agu25/me...
Flyer describing the title, time, and location of an oral panel session at the 2025 American Geophysical Union annual conference. Panel Discussion: Industry and Data: Improving Economic Resilience ith Environmental Information. December 18, 2025. 3:25pm CT. Room 348/349. Join us for a discussion on how NOAA is transforming data into action to build a resilient future. Moderated by Allison Crimmins, NOAA
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The Lancet Countdown on Health and Climate Change @lancetcountdown.bsky.social · 29/10/2025
🚨 JUST PUBLISHED 🚨 ⚠️ The 2025 @lancetcountdown.bsky.social report reveals climate change inaction is costing lives and livelihoods, and harming the economy. ❤️‍🩹 Protecting people’s health demands all hands on deck. Read more: www.lancetcountdown.org/2025-report/ #LancetClimate25
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Katharine Hayhoe @katharinehayhoe.com · 22/10/2025
Today, the U.S. faces one billion+ dollar climate/weather disaster on average every 2w. That's a massive increase from one every 4m in the 1980s. This is 'global weirding' and people are taking notice! The government told NOAA to stop tracking these events: but @climatecentral.org is on the job.
climatecentral.org
U.S. Billion-Dollar Weather and Climate Disasters | Climate Central
Explore U.S. billion-dollar weather and climate disasters since 1980, including total costs, trends, and impacts.
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Allison Crimmins @acrimmins.bsky.social · 15/10/2025
New paper from @marcusmarcusrc.bsky.social and team on the impacts of future climate trends on tropical cyclone–induced power outages. Spoiler: disproportionate risks for Hispanic, non-White, and low-income populations and huge increase in annual costs of outages. www.pnas.org/doi/10.1073/...
pnas.org
Climate change impacts on tropical cyclone–induced power outage risk: Sociodemographic differences in outage burdens | PNAS
This research investigates the projected risks of future climate trends on tropical cyclone–induced power outages in the Gulf and Atlantic coast of...
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AGU (American Geophysical Union) @agu.org · 25/09/2025
📢 Submissions are now open for the U.S. Climate Collection, a joint @theAGU + @ametsoc initiative. This special collection will publish U.S.-focused climate assessment science that’s free to read, ensuring rigorous, accessible science informs decisions for years to come. 🔗 buff.ly/1tHUSLC
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Climate.us @climate.us · 23/09/2025
Here is the working link: nca5.climate.us
nca5.climate.us
Fifth National Climate Assessment
The Fifth National Climate Assessment is the US Government’s preeminent report on climate change impacts, risks, and responses. It is a congressionally mandated interagency effort that provides the sc...
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Allison Crimmins @acrimmins.bsky.social · 23/09/2025
Thank you
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Andrew Dessler @andrewdessler.com · 28/08/2025
Our comment on the DOE CWG report is done. It tips the scales at 439 pages, approx. 3x longer than the DOE report. This is related to Brandolini's law: The amount of energy needed to refute bullshit is an order of magnitude bigger than that needed to produce it. Example: refuting one sentence.
DOE CWG STATEMENT (second paragraph of section 2.1.1, page 3): “Piao et al. (2020) noted
that greening was even observable in the Arctic.”
COMMENT: This statement implies that the Arctic greening signal was caused by elevated CO2
,
however that is not the scientific consensus. Piao et al. (2020) attribute the greening trend in the
Arctic predominantly to growing season length driven by warmer temperatures (see also Y.
Zhang et al., 2022). Piao et al. (2020) also note that this positive impact of increasing
temperatures appears to have weakened over the past four decades, “suggesting a possible
saturation of future greening in response to warmer temperature” (see also comment on
greenness trends related to Section 2.1.1, first sentence of Page 4). It is also important to put
Arctic greening more broadly into the context of the carbon cycle and other impacts. While
above-ground plants may have displayed more leaf area over the past decades, rising
temperatures also thaw permafrost and drive accelerated decomposition in highly carbon rich
soils (Turetsky et al., 2020), a process which is expected to accelerate as climate continues to
warm (Miner et al., 2022). Thus even with Arctic greening, high latitude terrestrial systems may
become net carbon sources to the atmosphere, causing an amplifying feedback (Braghiere et
al., 2023). Other risks to the Arctic linked to higher CO2

levels and rising temperatures are not
mentioned in this report (Virkkala et al., 2025). The Arctic is warming at a rate of 2 to 3 times the
global average, leading to thawing of permanently frozen soils (permafrost), with downstream
impacts including loss of structural support for buildings and subsidence, threatening
communities, roads, runways, and other assets across Alaska (Manos et al., 2025; University of
Alaska Fairbanks Institute of Northern Engineering US Army Corps of Engineers Alaska District
& Laboratory, 2019).
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Andrew Dessler @andrewdessler.com · 31/07/2025
🚨 If you're interested in working on a coordinated response to the DOE climate report, please enter your info on this google form 🚨 Please RT this so as many people see it as possible. forms.gle/BL9xUAfRxA...
forms.gle
DOE climate report response form
We are collecting names to assemble a writing team to respond to the DOE climate working group report. If you'd like to contribute, enter your info below. At this point, there is no guarantee what we'll do (if anything), but we want to keep our options open by collecting names. If you have any further questions, feel free to email me. We are primarily looking for Ph.D. scientists at universities or government labs in appropriate fields. I realize that this will exclude some qualified people and I apologize, but we felt this was necessary for a variety of reasons.
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Allison Crimmins @acrimmins.bsky.social · 30/07/2025
Oh you’re taking public comments?
Clip from Buffy the Vampire Slayer showing Buffy saying “I’m the thing that monsters have nightmares about”
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Climate Central @climatecentral.org · 21/06/2025
Today is #ShowYourStripes Day 🔵🔴 A single image. A century of data. Every city, state, county -- the planet -- has an impact of climate change story — and the stripes show it. Post yours. Highlight the warming where you live. Start the conversation.
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Allison Crimmins @acrimmins.bsky.social · 17/06/2025
Looking forward to hearing more tonight! peoplesbooktakoma.com/event/human-...
peoplesbooktakoma.com
Kate Marvel for Human Nature: Nine Ways to Feel About Our Changing Planet
A captivating exploration of climate change that uses nine different emotions to better understand the science, history, and future of our evolving planet Scientist Kate Marvel has seen the world e…
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Kate Marvel @drkatemarvel.bsky.social · 13/05/2025
In NYC June 16? You’re invited to my book launch!!! It’s at the beautiful New York Public Library and it’s free and I can’t wait to see you there www.nypl.org/events/progr...
showclix.com
Kate Marvel & Friends: Feeling Climate Change
Tickets for Kate Marvel & Friends: Feeling Climate Change in New York from NYPL. The climate scientist is joined by a group of special guests to share insights, data, and stories that reflect how it f...
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NPR @npr.org · 06/05/2025
Most Americans frequently use federal science information. But few are concerned that cuts to federal science spending could affect their access to such information, a new poll finds.
npr.org
Most Americans use federal science information on a weekly basis, a new poll finds
Most Americans frequently use federal science information. But few are concerned that cuts to federal science spending could affect their access to such information, a new poll finds.
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Costa Samaras @costasamaras.com · 02/05/2025
Last week, the govt dismissed 400 researchers working on the US National Climate Assessment. I was one of them. Today, @agu.org & @ametsoc.org announced they are joining forces to sustain the momentum. It's not a replacement, it's a reminder that science is unstoppable. news.agu.org/press-releas...
news.agu.org
AGU and AMS join forces on special collection to maintain momentum of research supporting the U.S. National Climate assessment
Congressionally mandated, the NCA draws on the latest scientific research to evaluate how climate change is affecting the United States. The new special collection does not replace the NCA but instead...
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Kate Marvel @drkatemarvel.bsky.social · 29/04/2025
Working on the NCA5 was amazing. It was genuinely moving to be surrounded by so much dedication and sheer scientific and administrative *excellence*. I think we’ve forgotten how to believe in good things, but this was one of them.
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Allison Crimmins @acrimmins.bsky.social · 28/04/2025
And yet it moves
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Allison Crimmins @acrimmins.bsky.social · 26/03/2025
Very excited to see the release of the 2nd Status of Tribes and Climate Change (STACC) Report! Congratulations to ITEP and all the authors, artists, and contributors for this massive undertaking and critical work! www.nau.edu/staccreport
The cover of the report shows artwork called Sister Spirits by Kylie Wanatee, age 19, Rosebud Sioux Tribe. The artist's statement reads "This is a 24 x 36 gouache painting of the Three Sisters: the Corn, the
Bean, and the Squash. Indigenous Peoples throughout North America cultivate varieties of this trio because of their ability to thrive once planted together; this is known as companion planting. The top sister is the corn stalk, the bottom right sister is the squash, as her dress becomes the shade that keeps the soil moist, and the bottom left sister is the bean that grows hanging onto the corn stalk.”
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Bob Kopp @bobkopp.net · 22/03/2025
US climate researchers and practitioners interested in contributing to the @ipcc.bsky.social Seventh Assessment Report - apply by April 4! www.agu.org/ipcc-nominat...
Nominations open for
IPCC 7th Assessment
Report Cycle

The U.S. Academic Alliance for the IPCC (USAA-IPC) opened an application portal inviting U.S. nominations for the IPCC 7th
Assessment report.

Apply here:
https://www.agu.org/ipcc-nominations
Deadline: 4 April 2025
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Allison Crimmins @acrimmins.bsky.social · 06/03/2025
This week, the first two papers in a special issue of Climatic Change were published. The issue features advancements and lessons learned from #NCA5 and other state, regional, and national assessments, including process, content, and communication innovations. link.springer.com/collections/...
link.springer.com
Advancements in U.S. Climate Assessments
The "Advancements in U.S. Climate Assessments" special issue is the culmination of the collective knowledge of climate assessment professionals over decades ...
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Tom Di Liberto @tdiliberto.bsky.social · 03/03/2025
Come for me laying down some facts. And stay for the legos in the background.
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Allison Crimmins @acrimmins.bsky.social · 28/02/2025
This is such a horrible loss for NOAA and all of us. I’m so sorry Tom.
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Tom Di Liberto @tdiliberto.bsky.social · 20/02/2025
Great article from @climate.noaa.gov on the California wildfires looking at climate change and natural influences.
climate.gov
The weather and climate influences on the January 2025 fires around Los Angeles
Scientists widely agree that human-caused warming is generally making fires in California and the rest of the West larger and more severe. Figuring out how important long-term warming is to individual...
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Gretchen Goldman, PhD @gretchentg.bsky.social · 04/02/2025
This is an existential moment for federal scientists and other public servants as they face pressures to resign. We must do everything we can to safeguard the federal science enterprise. Thoughts and recommendations from me out in @nature.com today: www.nature.com/articles/d41...
nature.com
‘Despair is not an option’ — how scientists can help protect federal research
Government scientists in the US must be clear-eyed and continue to serve the public.
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