I retired on Friday again. Also submitted a paper on Friday...

Is anybody else having trouble submitting abstracts to AGU26? I am not sure if "server error" is them or me. Thanks!

Come learn about some cool science my research group has been working on 🌧️❄️💧🌀! Virtual link on flyer.

NSF NCAR Research Applications Laboratory@ncar-ral.bsky.social · last mo.

🌎 Explore, Learn, Connect - RAL Seminar Series 🌎 ❄️ Investigating Precipitation Processes over CONUS with Objective Storm Tracking ❄️ Alyssa Stansfield, Assistant Professor, University of Utah ❄️ Wednesday, July 8 | 1-2 PM (MT) | Free hybrid event! Show me more! ral.ucar.edu/events/2026/...

@agu.org is now accepting abstracts for presentations to its American Geophysical Union 2026 Annual Meeting, taking place 7–11 December. This year, the meeting returns to its iconic host city, San Francisco! Deadline for submissions is August 5. www.agu.org/annual-meeting

AGU26 Annual Meeting | AGU

AGU’s annual meeting, the largest gathering of Earth and space scientists, convenes 20,000+ attendees from 100+ countries to share research, connect, collaborate, and inspire one another. Join us for...

agu.org

eos.org/research-spo...

Glaciers May Flow into the Ocean More Quickly Than We Think - Eos

New research found that adjusting a key model variable may give more accurate predictions of glacial retreat.

eos.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...

Poetry heard at the AMS Tropical Meteorological meeting : "Big whorls have little whorls, Which feed on their velocity, And little whorls have lesser whorls, And so on to viscosity." — Lewis Fry Richardson

‘Snow-Eater’ Heat Wave Behind Big Sierra Melt Is a Look at Our Climate Future “Without a long-term warming trend, these events were previously either unlikely or statistically impossible. We kind of unlock that possibility” @kqednews.kqed.org @kqedscience.bsky.social www.kqed.org/science/2000...

‘Snow-Eater’ Heat Wave Behind Big Sierra Melt Is a Look at Our Climate Future | KQED

An early spring California heat wave is feasting on what’s left of the Sierra Nevada snowpack, raising wildfire and drought concerns.

kqed.org

How well do ML weather models capture severe storms? A new analysis of Storm Amy compares ECMWF’s forecasting systems. Read the blog ➡️ www.ecmwf.int/en/about/med...

The American Meteorological Society seeks nominations for the 2026 Syukuro Manabe Climate Research Award. Nominations due 5/1/26. This award is granted to researchers who have made outstanding contributions to the fundamental understanding of Earth’s climate system. www.ametsoc.org/stac/committ...

New(ish) paper: journals.plos.org/climate/arti...

The combined effect of extreme heat and COVID-19 on agricultural labor supply in California communities

While growing bodies of scholars have examined the separate effects of extreme heat and COVID-19 on migrant farmworkers in the United States, we are unaware of any study examining their potential comb...

journals.plos.org

Latest paper on impact attribution. A must read for those interested in the topic doi.org/10.3389/fcli...

Not being an actual meteorologist, I have a question about the NCEP Stage IV radar precipitation dataset. The attached picture is a snapshot of the current SoCal radar. The concentric circles at Hanford and Santa Maria are clearly artifacts. Does NCEP correct for this?

It's happening! Canada launched two programs to recruit international researchers. Canada Impact+ Research Chairs (1 million/yr for 8 yrs +) Canada Impact+ Emerging Leaders. I will do my best to facilitate the process for those interested. Hit me up. www.canada.ca/en/impact-pl...

New paper: Assessing the performance of solar radiation management geoengineering simulations at link.springer.com/article/10.1...

Assessing the performance of solar radiation management geoengineering simulations - Frontiers of Earth Science

Offsetting the global warming caused by anthropogenic increases in atmospheric greenhouse gases by deliberate injection of aerosols into the stratosphere is the most studied of solar radiation management geoengineering schemes. The long-term success or failure of such schemes in achieving their stated goals is assessed by comparing simulated geoengineered temperature, precipitation and tropical cyclones metrics to equivalent fields in the simulated targeted climate simulations. Results using available data sets from three single model stabilized climate target experiments and three multimodel climate change reduction experiments are presented and compared against a measure of internal variability. While all but one experimental scheme is successful in achieving their targeted global mean annual surface temperature, their success at regional scales varies significantly and is often larger than the internal variability metric used here.

link.springer.com

The attack on @frediotto.bsky.social was seeded years ago by Roger Pielke Jr, who started arguing that this table from a recent @ipcc.bsky.social report proved that climate science cannot attribute extreme weather to climate change. But Roger is of course lying. And we know this for 2 reasons. 🧵

📣 PRESS RELEASE Registration for experts interested in serving as Expert Reviewers and providing scientific comments on the First Order Draft of the Special Report on Climate Change and Cities is now open! Registration closes 30 Nov 2025. Read more 🔗 www.ipcc.ch/2025/09/17/p...

Thank you for posting. I have hundreds of hours into these (2,3,4,& 5) . At taxpayer expense, I might add.

Marshall Shepherd @drshepherd2013.bsky.social · last yr.

If you are having trouble finding National Climate Assessment reports, they are here. www.realclimate.org/index.php/ar...

Delighted to announce that Ben Santer is now an Honorary Professor @ueaenv.bsky.social & the Climatic Research Unit (CRU). Ben is returning to his "academic home": he did his PhD in CRU before his stellar career developing "fingerprint" methods to identify human & natural effects on climate.

What caused deadly landslides in Colombia? Finding out, should be easier. Tropical climates are complex, but if data are held by companies & organisations hiding them behind walls of bureaucracy it becomes impossible. @wwattribution.bsky.social study: www.worldweatherattribution.org/growing-expo...

It can get pretty hot.

How Hot Can It Get? Scientists Are Struggling to Find an Answer

Figuring out how anomalously high temperatures can rise is taking on added importance as the planet warms.

bloomberg.com

Heatwaves affect different places in different ways. Leafy suburbs are cooler than more built up, concrete heavy areas, which means that disadvantaged communities are more likely to be more severely affected. Watch our super short video on heatwaves to find out more... #heatwave

Cabot Institute for the Environment@cabot-institute.bsky.social · last yr.

☀️Heatwaves☀️, like the one we're having this week, will be made even more dangerous by climate change. Dr @eunicelo.bsky.social is on a mission to map how heat can affect people living in cities like Bristol. #heatwave @bristoluni.bsky.social @ebibristol.bsky.social

I explained what extreme event attribution is in this article. doi.org/10.1063/PT.3...

Connecting extreme weather events to climate change

Advances in attribution science are improving understanding of human influence on our planet.

doi.org

The study by Xueke Li and colleagues was published here in the Proceedings of the National Academy of Sciences of the USA: www.pnas.org/doi/10.1073/... (see their ref. 37 for our original Petoukhov et al. 2013 paper)

A resonance phenomenon is causing big waves in the atmosphere. And that has increased due to #globalwarming, causing wild summer extremes, a new data analysis finds. The mechanism was first identified in 2013 by the late Vladimir Petoukhov at the Potsdam Institute. apnews.com/article/extr...

Planetary waves linked to wild summer weather have tripled since 1950, study finds

A new study says climate change has tripled the frequency of atmospheric wave events linked to extreme summer weather in the last 75 years.

apnews.com

Important postscript on our recent study: We can confirm now that the recent heat domes over North America & Europe were part of a resonant "wave 7" hemispheric pattern that emerged in mid June, persisting through most recent data [analysis by @xuekeli.bsky.social]

Michael E. Mann@michaelemann.bsky.social · last yr.

Ours is the first study to demonstrate an historical increase (by a factor of three!) in the occurrence of atmospheric resonance, which is associated with many of the most devastating and deadly persistent summer weather extremes in recent years (e.g. Pacific Northwest Heat Dome of summer '21) 🧵

The flooding of the Guadalupe River in Texas was undoubtedly made worse because of climate change. I would estimate that there was 7-20% more rainfall than w/o the human interference in the climate. But w/o detailed attribution studies on the storm and associated runoff, we can't know for certain.

This is theft, plain and simple. They stole this from you. Every deletion, every erasure, every website that goes dark is a crime against the American public

Katharine Hayhoe@katharinehayhoe.com · last yr.

The US Global Change Research Program's website, including all its sub-domains that host the National Climate Assessments and related reports, is now offline. The 1990 Global Change Research Act (see below) mandates its research findings be available to all federal agencies & departments.

It's an older clip (11/01/23) but I think worth posting. Senate Environment And Public Works Committe Hearing on Impact of Climate Change on Severe Weather

"Increased frequency of planetary wave resonance events over the past half-century" | Our new article in @pnas.org by @xuekeli.bsky.social, @michaelfwehner.bsky.social, Shannon Christiansen & yours truly: www.pnas.org/doi/10.1073/...

Increased frequency of planetary wave resonance events over the past half-century | PNAS

We demonstrate a tripling in the frequency of planetary wave resonance events over the past halfcentury, coinciding with the rise in persistent bor...

pnas.org