Jeffrey Weiss

Hailstones may get bigger as the climate warms — bringing higher insurance costs Hail has caused higher damage costs in the U.S. this year than hurricanes and floods put together. Research suggests climate change will make hailstones larger.

Lots of finger pointing in the article but no mention of the elephant in the room. www.nbcnews.com/science/envi...

Boulder and Utrecht, Netherlands, are twins in land area, similar universities, distance to similar sized major cities, Denver & Amsterdam, both extremely livable. One difference: density. Utrecht 9440/sq-mi, Boulder half that at 4112/sq-mi. Plenty of room if done right.

What is the relative contribution of observational uncertainty to the overall uncertainty? Are there specific phenomena where obs uncertainty plays a bigger role? Anything involving the deep ocean comes to mind.

Fall in sales associated with price increase for different products

I wonder where carbon would land www.economist.com/cdn-cgi/imag...

These hemispheric 6-wave patterns are very slow to shift and lead to persistent weather regimes of a week or a bit more

Wayne County community rally amid ICE raid at restaurant Newswatch 16's Emily Kress spoke with people in the Honesdale community who are shaken after watching three restaurant employees get detained.

"It's really hard to fathom that the guy making my pizza for 25 years is a gangster and a terrorist, and the person who shows up in an unmarked car wearing a mask and body armor comes to take him away is somehow the good guy” www.wnep.com/article/news...

Summer warmth for a second day here in the Maritimes, with the hottest temps in Canada! 🍁
Many new daily records were set including: Halifax, Sydney, Shelburne, Antigonish, Fredericton, Moncton, St. Stephen, Bathurst & Miramichi.
First 30°+ temp of the season for NS at Malay Falls.
#nswx #nbwx

PANGAEA is rescuing numerous datasets scheduled for decommissioning in May. PANGAEA has opened its archive to help safeguard these valuable resources. If you become aware of other endangered datasets, please contact them. Importantly, let others know where to find the data.

www.pangaea.de

A public information statement from the National Weather Service announces the temporary suspension of radiosonde observations (weather balloon launches) in Albany, New York, and Gray, Maine, due to staffing shortages. The document outlines details about the suspension and provides contact information.

Radiosondes on weather balloons are essential for collecting data from the upper atmosphere for accurate forecasting. Due to the mass firing at NOAA, the NWS doesn’t have enough people to launch balloons. 🎈

Accurate weather forecasts save lives.

See data here: www.spc.noaa.gov/exper/soundi...

Your regular reminder that the US air & water pollution laws passed in the 60s & 70s -- and the elaborate federal bureaucracy created to administer them -- constitute one of the most successful gov't interventions in history. WILDLY successful. The envy of the world.

Don’t forget Front Range Passenger Rail www.ridethefrontrange.com

All NWS services: data, forecasts, radar, satellite, IT infrastructure, costs each American taxpayer $4/yr. Less than a latte. And each person gets back 73 x $4 = $292 a year in value for that service.

I think that’s a pretty good deal.

RTD customers ride for free Feb. 4 to mark the work of a civil rights icon All buses and trains on Regional Transportation District routes will be free to customers on Feb. 4, officially called Transit Equity Day, to mark the contributions of civil rights leader Rosa Parks. Parks refused to give up her seat and move to the back of a segregated bus on Dec. 1, 1955, in Montgomery, Ala., galvanizing the Civil Rights Movement and launching transit equity for all riders.

RTD customers ride for free Feb. 4 to mark the work of a civil rights icon

All buses and trains on Regional Transportation District routes will be free to customers on Feb. 4, officially called Transit Equity Day, to mark the contributions of civil rights leader Rosa Parks. Parks refused to give…

Monopolizing an entire train car is a significant multiplier.

private jet: 3kg CO2/km
Amtrak train car: 3 kg CO2/km
Eurostar train car: 0.4 kg CO2/km
private auto: 0.3 kg CO2/km

Dark mode, obviously

How to mitigate post-fire smoke impacts in your home

Several colleagues at CU Boulder and I worked on these recommendations after the Marshall Fire. Thanks to @cwiedinm.bsky.social for updating them over the past few days. cires.colorado.edu/news/how-mit...

hexagonal basalt columns

hexagonal beehive

Symmetry also comes from physics like in hexagonal basalt columns. Can we distinguish between physics and biology in hexagonal beehives and other creature constructions?

Fascinating. Mathematics is pattern and symmetry in addition to numbers. I am struck by the symmetry of Acheulean vs Oldowan tools. Does this say something about early human mathematical development?

I hope that in Y2.1K we’ll see the same article about climate change

🧪🛰️ A great example at display in this GOES nighttime image over NE North America.
Pollution change cloud properties is an example of an #aerosol-cloud interactions (a rather complicated atmospheric process). The controlling factors the determine a cloud evolution (macro like meteorology
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Foggy morning in Bertinoro, Italy

Thanks to everyone for the amazing week in Bertinoro at the FERS school on data and climate, and especially to the incredible students. www.fersschool.it/courses/data...

Bjerknes compensation suggests the atmospheric heat transport will increase leaving the total planetary heat transport largely unchanged.

My version of this dream finally went away. Replaced by never attending the class I’m supposed to be teaching.

Danny Hudson: "Olive oil and water droplets." Picture showing droplets with a range of sizes.

Like oil/water droplets, water/air cloud droplets range in size, 1-100μm. Challenging to measure and model, uncertainty in cloud droplet size distribution cascades to uncertainty in regional and global rainfall and climate change projections.
#clouds #climate
ichef.bbci.co.uk/news/800/cps...

Your pictures on the theme of 'fluids' A selection of pictures sent in by our readers on the theme of "fluids".

bbc.com/news/article... on the theme of fluids

Marlyn Wescoff (left) and Ruth Lichterman, two of the women who programmed the ENIAC. Photo: Corbis/Getty Images and https://cse.engin.umich.edu/about/history/eniac-display/

With AI weather forecast success be mindful of the inextricable relation between sci comp, gov, and war. ChatGPT says first five digital computers apps were

Code Breaking 1943
Artillery Trajectories 1944
H-Bomb 1945
Weather Forecasting 1950
Census Data 1951
#computerhistory #AI #WeatherForecasting

Figure from paper on turbulence in flow through the Strait of Gibralter

Turbulence in the rapids mixes air and water into froth. Turbulence over deep ocean sills mixes water masses and helps shape the overturning circulation. 🌊

agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Figure from paper on turbulence in flow through the Strait of Gibralter

Turbulence in the rapids mixes air and water into froth. Turbulence over deep ocean sills mixes water masses and helps shape the overturning circulation. 🌊

agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Flow patterns in Boulder Creek

Transition to turbulence - there and back again. 🌊