Dr. Robert Rohde
@RARohde
Chief Scientist @BerkeleyEarth. Physics PhD & data nerd. Usually focused on climate change, fossil fuels, & air quality issues.
It's a hard time for everyone. I work for a small non-profit, @BerkeleyEarth, and we need your help. We fund our work with grants & donations. If you like our work on climate change, and have a bit spare, perhaps consider making a donation. Thank you. donate.berkeleyearth.org
The cultural and regulatory resistance to air conditioning in Europe really does have negative impacts on quality of life, productivity, and health. Add in global warming, and the European resistance to air conditioning becomes increasingly hazardous and untenable.
We need a new Marshall Plan for shipping air conditioning units to Europe
It's disappointing major weather media groups that exist off NOAA/NWS data have been deafeningly silent about federal staffing hits and proposed cuts to NOAA. No letters of support. No news reporting on their detrimental effects to forecasting. Just glaring editorial omission. 🧵
US inventors also created the first solar panels and nuclear reactors, and were among the first to build commercial wind turbines. Shame we aren't leading those industries as well.
The United States CREATED the oil industry, and today, we’re LEADING it.
It's the most American thing ever to switch out one type of sugar with a different kind of sugar in your sugar drink and call it a health initiative
MAHA is winning.
China is building a single mega dam project that will output power equivalent to 38 nuclear reactors. Truly mind-boggling scale as China cements its place as the world’s first electrostate.
It's done: China just launched the construction of the Yarlung Tsangpo dam project (scmp.com/news/china/dip…). It'll be by far the world’s largest hydroelectric facility, generating 3 times more electricity than the Three Gorges dam, 300 billion kilowatt-hours. This dam project…
This is part of the EPA directly responsible for gathering the health and impact data that are used to set safe limits for chemical and pollution exposure. Without those efforts, it will be near impossible for EPA to set any new standards for anything.
Breaking News: The EPA said it would eliminate its scientific research arm and begin firing hundreds of scientists, after denying that it intended to do so. nyti.ms/4500xIU
NOAA has three datasets titled: "Global Summary of the Day" "Global Summary of the Month" "Global Summary of the Year" You'd think that these were all connected to the same underlying measurements. You'd be wrong. GSOM is built for a different dataset entirely than GSOD. 🤷♂️
Incredible shrinking cone! Great illustration showing how the Cone of Uncertainty has shrunk dramatically over time. Stark difference: Compare Kartina in 2005 to Helene in 2024. Hurricane forecasting has a come a long way due to the expertise of NOAA scientists and it's…
If you spend enough time talking about climate change, sooner or later someone will show station counts from the obsolete GHCN-M v3 and argue the number of weather stations has declined >50% since 1980. That's an artifact of how GHCN-M v3 was constructed, and not all stations.

Has anyone already written a deep dive into the House Appropriations Bill as it would affect NOAA? I've seen some summaries that the bill introduced this week would involve fewer cuts than what Trump initially proposed, but I'd like to know more details.
And now: A thread regarding my thoughts on "1.5°C"--not only as a Paris Agreement target, but also re: relevance to recent #climate events & overlaps (or not) w/geophysical realities. (This was originally written as a response to a journalist, who used excerpts in their article.)
PSA: "Rare earth" is not some slang for "uncommon dirt". It refers to a specific group of 17 elements on the periodic table, most of which have unusual electrical or magnetic properties that make them valuable in specialized applications. en.wikipedia.org/wiki/Rare-eart…
One solar panel can, over its lifetime, harness enough energy to manufacture ~20 more solar panels. The materials required are cheap and abundant. This sets up a virtuous cycle where any country with suitable manufacturing expertise can exponentially grow their solar capacity.
"The power of human beings to control and change the environment is growing as our technology grows. At present, we clearly have reached the stage where we are capable to make significant changes in the global climate." -Carl Sagan, 1985
Temperature Update for June 2025 Third warmest June in the instrumental record. Similar conditions to May, but sharply cooler than earlier in 2025. Neutral conditions in the Pacific. 2025 is very likely to be the 2nd or 3rd warmest year. berkeleyearth.org/june-2025-temp… 🧵
It's an odd world that we live in, but having this government directly deny the existence of chemtrails might actually be rather useful.
The Trump EPA is committed to total transparency. I tasked my team @EPA to compile everything we know about contrails and geoengineering to release to you now publicly. I want you to know EVERYTHING I know about these topics, and without ANY exception! epa.gov/newsreleases/e…
Now only two hours away. See you there.
Berkeley Earth's next monthly temperature briefing, looking back on June temperatures, will be held online on July 10th at 8 AM PT / 11 AM ET / 5 PM CET. us02web.zoom.us/webinar/regist… It's open for anyone, but geared toward the news media. See you there.