Jan Herder
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janherder.bsky.social
Jan Herder
@janherder.bsky.social
Gaian, trees, permaculture, history, archaeology, Birder, vegan, Covid conscious. Doomer. Posting on Overshoot, climate, weather and issues of collapse equity. Living on colonized Passamaquoddy land.
Reposted by Jan Herder
You ever just sit down and realize that the rise of 21st century fascism is capital's answer to climate change?
November 21, 2025 at 9:25 AM
2nd lowest
Friday ice update - #Arctic sea ice extent is currently the *2nd* lowest on record (JAXA data)

• about 720,000 km² below the 2010s mean
• about 1,390,000 km² below the 2000s mean
• about 2,010,000 km² below the 1990s mean
• about 2,520,000 km² below the 1980s mean

More zacklabe.com/arctic-sea-i...
November 21, 2025 at 1:56 PM
Reposted by Jan Herder
Two years ago, we did a study on a devastating drought in the Fertil Crescent. Due to climate change and water governance disputes the drought is still ongoing. Teheran might be running out of water, if it doesn't start raining soon. Our update: www.worldweatherattribution.org/human-induce...
November 21, 2025 at 12:51 PM
Reposted by Jan Herder
With everything else going on in the world, it is easy to miss that NOAA has officially declared the return of La Niña.

This follows the weak La Niña at the start of 2025 and neutral conditions in recent months.

1/
November 21, 2025 at 11:15 AM
Edges
Weirdos and outliers often survive where “normal” individuals can’t — especially at the edges of a species’ range. Behavioral diversity is evolutionary insurance. As populations shrink, we lose not just numbers, but the quirks that could help species survive a shifting world.
November 20, 2025 at 7:55 PM
Parched
November 20, 2025 at 7:52 PM
Reposted by Jan Herder
Great news for ocean altimetry observations! 🌍🛰

Global sea level rise is also a crucial indicator of Earth's Energy Imbalance.

It takes about 50 times as much heat to increase sea levels by thermal expension of the oceans than it does from melting ice.

Satellites paint a very worrying picture!
November 20, 2025 at 3:14 PM
Reposted by Jan Herder
The Earth energy imbalance (EEI) is best looked at over longer periods, as short-term impacts from ENSO, volcanoes, solar cycle, cloud cover and aerosols can create a lot of volatility.

Here is a graph showing the 36-month running average for the EEI, currently at 11.2 HpS.
November 19, 2025 at 2:24 PM
Reposted by Jan Herder
1,019 glaciers have disappeared since 1973 in Switzerland! ✝️

1st nationwide assessment of vanished glaciers:
>40% of the glaciers inventoried in 1973
~13% (47±3 km²) of total glacier area loss! 🧊🔥

But, as it is based on the latest inventory (from 2016), the actual figures are far much higher! 📈 😰
November 19, 2025 at 12:05 PM
A billion Hiroshima bombs a year
👻BOO‼️
I can't think of anything scarier than this.

The greenhouse gases we have added to the atmosphere now force over a billion Hiroshima bombs worth of heat into the Earth system every year.
November 19, 2025 at 1:06 PM
Reposted by Jan Herder
“Even for an intermediate emissions scenario [which is our current emissions pathway] the probability of AMOC shutdown is way above 50%”

(AMOC shut-down means Europe and parts of South-East Asia become uninhabitable, by the way.)

1/4
Is the Atlantic Ocean circulation close to tipping?
Hear the latest science as I presented it last month at the ATLAS25 event in Helsinki.
Let me know if anything is unclear, or if you see good reasons why your government shouldn't immediately act on this. 🌊
youtu.be/ULJXqOZuY-8
Is the Atlantic Ocean circulation close to tipping?
YouTube video by Earth System Analysis - Potsdam Institute
youtu.be
November 16, 2025 at 7:56 PM
They should tell us
Someone turned up on one of our threads the other day and said something very irritating… but probably a commonly held belief.

“They should only tell us if a significantly different virus turns up..”

Ok. Not irritating. Infuriating. I’ll explain why.
November 16, 2025 at 1:31 PM
PFAS map in the UK. An essential tool. In the States only Maine has anything similar
November 15, 2025 at 4:46 PM
Reposted by Jan Herder
First known human case of H5N5!
November 14, 2025 at 10:09 PM
Reposted by Jan Herder
The atmospheric CO₂ growth rate was off the chart in 2024!
November 14, 2025 at 7:00 PM
Reposted by Jan Herder
Equalizing electricity prices between residential, commercial, and industrial customers would save households - aka voters - 21% on their electricity bills. Commercial prices would go up 1%. Industrial prices would go up 59% because residential and commercial customers deeply subsidize them today.
7. Residential customers - aka you and me, aka voters - pay 28% more (16.5 c/kWh, 2024 average) than commercial customers (12.9 c/kWh) and 201% more than industrial (8.2 c/kWh). This trend is accelerating: Residential prices rose 27% from 2019-2023, vs. 21% for commercial and 19% for industrial.
November 13, 2025 at 11:21 PM
Debt
Unlike other nations, the US has racked up unprecedented debt by giving away treasury funds to the wealthiest 0.1% of its population through a process that sociologists call capture.
November 14, 2025 at 2:47 PM
Reposted by Jan Herder
November 11, 2025 at 5:00 PM
900
EXCEPTIONAL HEAT IN SE ASIA
Records pulverized every day in every country over and over again

Most extreme event ever in SINGAPORE
35.4 Changi AP Monthly record again!

THAILAND
35.7 Sawi

INDONESIA
35.5 Timika

>900 consecutive days breaking records in Thailand & Indonesia!
November 8, 2025 at 12:49 PM
Reposted by Jan Herder
“Glance into the world just as though time were gone: and everything crooked will become straight to you.”

(Nietzsche)

#collapse
November 7, 2025 at 9:13 PM
I believe that’s called ‘going Greek’. Few return from that glance. Great quote Ian
“Glance into the world just as though time were gone: and everything crooked will become straight to you.”

(Nietzsche)

#collapse
November 8, 2025 at 12:42 PM
Reposted by Jan Herder
🚨🚨🚨The Arctic portion of the Northern Hemisphere (60N to 90N) had its warmest October on record. What could go wrong? @alaskawx.bsky.social 🚨🚨🚨
November 5, 2025 at 3:05 AM