Joe Ko
@joe-ko.bsky.social
Postdoc at LEAP / Columbia University at the intersection of atmospheric science and AI for science. Currently studying ice clouds ❄️☁️
Reposted by Joe Ko
“Today’s gasoline-fueled cars and trucks waste around 80% of the energy that gets pumped into their gas tanks. Electric vehicles operate with only around 11% energy loss, meaning that most of the energy that goes into the car ends up turning the wheels.”
yaleclimateconnections.org/2024/01/elec...
yaleclimateconnections.org/2024/01/elec...
Electric vehicles use half the energy of gas-powered vehicles » Yale Climate Connections
They’re just much more efficient.
yaleclimateconnections.org
December 1, 2025 at 3:35 PM
“Today’s gasoline-fueled cars and trucks waste around 80% of the energy that gets pumped into their gas tanks. Electric vehicles operate with only around 11% energy loss, meaning that most of the energy that goes into the car ends up turning the wheels.”
yaleclimateconnections.org/2024/01/elec...
yaleclimateconnections.org/2024/01/elec...
Reposted by Joe Ko
New Marron survey of 400+ subway lines across the world from London to Paris to Shanghai finds just 6% still use two-person train operation, which would be required by a TWU-backed bill.
“It doesn’t really matter to us what the data shows,” says TWU boss Samuelsen
www.nytimes.com/2025/11/13/n...
“It doesn’t really matter to us what the data shows,” says TWU boss Samuelsen
www.nytimes.com/2025/11/13/n...
Does the Subway Still Need Train Conductors?
www.nytimes.com
November 13, 2025 at 2:06 PM
New Marron survey of 400+ subway lines across the world from London to Paris to Shanghai finds just 6% still use two-person train operation, which would be required by a TWU-backed bill.
“It doesn’t really matter to us what the data shows,” says TWU boss Samuelsen
www.nytimes.com/2025/11/13/n...
“It doesn’t really matter to us what the data shows,” says TWU boss Samuelsen
www.nytimes.com/2025/11/13/n...
Wind shear 🌬️ leading to two distinct ☁️ layers moving in opposite directions.
November 11, 2025 at 6:36 PM
Wind shear 🌬️ leading to two distinct ☁️ layers moving in opposite directions.
5 minutes of ❄️ in NY
November 11, 2025 at 12:46 PM
5 minutes of ❄️ in NY
Reposted by Joe Ko
Arizona has paused development of hundreds of thousands of homes on the far Phoenix fringes due to insufficient groundwater supplies, @highcountrynews.org finds: www.hcn.org/issues/57-10...
The dried-out subdivisions of Phoenix - High Country News
A groundwater crisis halted the construction of thousands of homes and pitted affordability against environmental concerns.
www.hcn.org
November 10, 2025 at 5:25 AM
Arizona has paused development of hundreds of thousands of homes on the far Phoenix fringes due to insufficient groundwater supplies, @highcountrynews.org finds: www.hcn.org/issues/57-10...
Reposted by Joe Ko
In an op-ed for TR, @davidkeith.bsky.social & @danvisioni.bsky.social voice deep concerns about Stardust & other for-profits racing into solar geoengineering — and asserting claims that, they argue, the science doesn't support.
Why the for-profit race into solar geoengineering is bad for science and public trust
Two scientists argue that the growing commercial efforts to counter climate change by reflecting away sunlight will thwart responsible research in the field.
www.technologyreview.com
November 4, 2025 at 2:50 PM
In an op-ed for TR, @davidkeith.bsky.social & @danvisioni.bsky.social voice deep concerns about Stardust & other for-profits racing into solar geoengineering — and asserting claims that, they argue, the science doesn't support.
nice cirrostratus(?) this morning ❄️
November 1, 2025 at 10:51 PM
nice cirrostratus(?) this morning ❄️
As per my last post… ☁️ 👻 ☁️
October 31, 2025 at 6:43 PM
As per my last post… ☁️ 👻 ☁️
Reposted by Joe Ko
In Germany, a standard 7kW rooftop solar system costs $10,000.
In Australia, it costs $4,000.
In the US, the same system costs about $28,000 — thanks partly to a mess of state, local, and HOA rules, per a new analysis shared with @alexckaufman.bsky.social:
heatmap.news/energy/solar...
In Australia, it costs $4,000.
In the US, the same system costs about $28,000 — thanks partly to a mess of state, local, and HOA rules, per a new analysis shared with @alexckaufman.bsky.social:
heatmap.news/energy/solar...
Simpler Solar Regulations Would Save Americans $1.2 Trillion
A new analysis by Permit Power calculates the cumulative benefits of cheap rooftop solar over the lifetime of a typical rig.
heatmap.news
October 23, 2025 at 5:46 PM
In Germany, a standard 7kW rooftop solar system costs $10,000.
In Australia, it costs $4,000.
In the US, the same system costs about $28,000 — thanks partly to a mess of state, local, and HOA rules, per a new analysis shared with @alexckaufman.bsky.social:
heatmap.news/energy/solar...
In Australia, it costs $4,000.
In the US, the same system costs about $28,000 — thanks partly to a mess of state, local, and HOA rules, per a new analysis shared with @alexckaufman.bsky.social:
heatmap.news/energy/solar...
Reposted by Joe Ko
NPR ran a story last night about NSF terminating funding for AI focused meteorology research & the (IMO) insane explanation they got from OMB. I shared my perspective on this and our continued insistence to shoot ourselves in the foot when it comes to scientific R&D. tinyurl.com/2kzujwz8
Trump Administration confirms that NSF AI meteorology institute funding cut because of "climate hysteria"
Ending of NOAA billion dollar climate disaster tracking another example of us becoming less prepared for a future affected by climate change.
tinyurl.com
October 23, 2025 at 2:23 PM
NPR ran a story last night about NSF terminating funding for AI focused meteorology research & the (IMO) insane explanation they got from OMB. I shared my perspective on this and our continued insistence to shoot ourselves in the foot when it comes to scientific R&D. tinyurl.com/2kzujwz8
Reposted by Joe Ko
How is the Google DeepMind model doing so far this Atlantic hurricane season?
My *preliminary* homogeneous verification shows that the DeepMind ensemble mean "GDMN" is dominating in both track and intensity, beating the revered "HCCA" consensus and the NHC ("OFCL") at all/most lead times.
[1/2]
My *preliminary* homogeneous verification shows that the DeepMind ensemble mean "GDMN" is dominating in both track and intensity, beating the revered "HCCA" consensus and the NHC ("OFCL") at all/most lead times.
[1/2]
October 22, 2025 at 5:50 PM
How is the Google DeepMind model doing so far this Atlantic hurricane season?
My *preliminary* homogeneous verification shows that the DeepMind ensemble mean "GDMN" is dominating in both track and intensity, beating the revered "HCCA" consensus and the NHC ("OFCL") at all/most lead times.
[1/2]
My *preliminary* homogeneous verification shows that the DeepMind ensemble mean "GDMN" is dominating in both track and intensity, beating the revered "HCCA" consensus and the NHC ("OFCL") at all/most lead times.
[1/2]
This is now a cloud timelapse page ☁️
October 22, 2025 at 6:45 PM
This is now a cloud timelapse page ☁️
🤯
Investment in information processing equipment & software is 4% of GDP.
But it was responsible for 92% of GDP growth in the first half of this year.
GDP excluding these categories grew at a 0.1% annual rate in H1.
But it was responsible for 92% of GDP growth in the first half of this year.
GDP excluding these categories grew at a 0.1% annual rate in H1.
October 19, 2025 at 3:00 PM
🤯
Reposted by Joe Ko
In the first half of 2025, renewables led by solar and wind generated more electricity worldwide than coal, www.zmescience.com/ecology/rene...
Renewable Energy Overtook Coal As the World’s Top Power Source for the First Time, Marking a New Era
Renewable energy finally surpassed coal and it’s a turning point decades in the making.
www.zmescience.com
October 19, 2025 at 3:06 AM
In the first half of 2025, renewables led by solar and wind generated more electricity worldwide than coal, www.zmescience.com/ecology/rene...
