@slawomirsaw.bsky.social
We have only one earthly air, the same for all people and animals.
We, humanity as a whole, probably don't understand that we are using billions of CO2 generators continuously and resulting consequences.
More smart science means less stupid politics.
We, humanity as a whole, probably don't understand that we are using billions of CO2 generators continuously and resulting consequences.
More smart science means less stupid politics.
Pinned
ROI of CO2(GHG) should be more important than simple ROI of money.
i.e. ROI CO2 = (amount of CO2 emissions reduced during the lifetime of a given project) / (amount of CO2 emissions for project execution + amount of CO2 emissions for recycling at end-of-use).
i.e. ROI CO2 = (amount of CO2 emissions reduced during the lifetime of a given project) / (amount of CO2 emissions for project execution + amount of CO2 emissions for recycling at end-of-use).
Reposted
If CO2 emissions go to zero in 2050 (top), the sinks (green) will bring atmospheric CO2 back down (middle), & temperature will stabalise at ~1.7°C (bottom).
Going to zero today will keep us <1.5°C
Constant emissions leads to 2.6°C, rising rapidly thereafter.
www.nature.com/articles/s41...
Going to zero today will keep us <1.5°C
Constant emissions leads to 2.6°C, rising rapidly thereafter.
www.nature.com/articles/s41...
November 14, 2025 at 8:23 AM
If CO2 emissions go to zero in 2050 (top), the sinks (green) will bring atmospheric CO2 back down (middle), & temperature will stabalise at ~1.7°C (bottom).
Going to zero today will keep us <1.5°C
Constant emissions leads to 2.6°C, rising rapidly thereafter.
www.nature.com/articles/s41...
Going to zero today will keep us <1.5°C
Constant emissions leads to 2.6°C, rising rapidly thereafter.
www.nature.com/articles/s41...
Reposted
Starting the first Monday of 2026, and continuing every two or three weeks for the rest of that year, I am going to be releasing searchable pdfs and annotated html of the "CO2 newsletter", published between 1979 and 1982 by geologist William N. Barbat.
It will break your heart, again and again.
It will break your heart, again and again.
November 12, 2025 at 3:52 PM
Starting the first Monday of 2026, and continuing every two or three weeks for the rest of that year, I am going to be releasing searchable pdfs and annotated html of the "CO2 newsletter", published between 1979 and 1982 by geologist William N. Barbat.
It will break your heart, again and again.
It will break your heart, again and again.
Reposted
Global Greenhouse Gas (GHG) emissions rise again in 2024, up 2.3%.
This is our collective progress, 10 years after the Paris Agreement.
www.unep.org/resources/em...
1/
This is our collective progress, 10 years after the Paris Agreement.
www.unep.org/resources/em...
1/
November 5, 2025 at 8:24 AM
Global Greenhouse Gas (GHG) emissions rise again in 2024, up 2.3%.
This is our collective progress, 10 years after the Paris Agreement.
www.unep.org/resources/em...
1/
This is our collective progress, 10 years after the Paris Agreement.
www.unep.org/resources/em...
1/
Reposted
a century of glaciers melting 🧪🌐
November 3, 2025 at 5:21 PM
a century of glaciers melting 🧪🌐
Reposted
Jeśli ktoś myśli że ogarniemy się z kryzysem klimatycznym i planetarnym bez głębokiej rewizji podejścia do oszczędności i racjonalizacji zużycia energii i szerzej, zasobów, polecam mu ten wykres: ourworldindata.org/grapher/prim...
Primary energy consumption by source
Primary energy is measured in terawatt-hours, using the substitution method.
ourworldindata.org
October 23, 2025 at 7:03 PM
Jeśli ktoś myśli że ogarniemy się z kryzysem klimatycznym i planetarnym bez głębokiej rewizji podejścia do oszczędności i racjonalizacji zużycia energii i szerzej, zasobów, polecam mu ten wykres: ourworldindata.org/grapher/prim...
Reposted
Finland has a goal to be net zero GHG emissions by 2035.
Emissions were declining, the LULUCF removals were strong, the plan was looking good, but then LULUCF collapsed.
Net GHG emissions have actually risen over the last decade!
www.treasuryfinland.fi/investor-rel...
1/
Emissions were declining, the LULUCF removals were strong, the plan was looking good, but then LULUCF collapsed.
Net GHG emissions have actually risen over the last decade!
www.treasuryfinland.fi/investor-rel...
1/
October 23, 2025 at 7:54 AM
Finland has a goal to be net zero GHG emissions by 2035.
Emissions were declining, the LULUCF removals were strong, the plan was looking good, but then LULUCF collapsed.
Net GHG emissions have actually risen over the last decade!
www.treasuryfinland.fi/investor-rel...
1/
Emissions were declining, the LULUCF removals were strong, the plan was looking good, but then LULUCF collapsed.
Net GHG emissions have actually risen over the last decade!
www.treasuryfinland.fi/investor-rel...
1/
Reposted
Reposted
Holy wow, +3.5 ppm CO₂ last year, up from +2.4 ppm average the past decade, and +0.6 ppm in the 1960s.
It gets scarier the closer you look at it. All this is a stress test for the planet, and it's buckling.
Two big reasons for the massive increase: wildfires, and the ocean sinks are shutting down.
It gets scarier the closer you look at it. All this is a stress test for the planet, and it's buckling.
Two big reasons for the massive increase: wildfires, and the ocean sinks are shutting down.
October 16, 2025 at 7:02 AM
Holy wow, +3.5 ppm CO₂ last year, up from +2.4 ppm average the past decade, and +0.6 ppm in the 1960s.
It gets scarier the closer you look at it. All this is a stress test for the planet, and it's buckling.
Two big reasons for the massive increase: wildfires, and the ocean sinks are shutting down.
It gets scarier the closer you look at it. All this is a stress test for the planet, and it's buckling.
Two big reasons for the massive increase: wildfires, and the ocean sinks are shutting down.
Reposted
The most important data in the world comes from NASA satellites.
Here I plotted both hemispheres.
It shows that the Northern Hemisphere now absorbs more sunlight than the Southern Hemisphere and that both Hemispheres absorb more light than they radiate heat to space, leading to faster warming.
1/
Here I plotted both hemispheres.
It shows that the Northern Hemisphere now absorbs more sunlight than the Southern Hemisphere and that both Hemispheres absorb more light than they radiate heat to space, leading to faster warming.
1/
October 7, 2025 at 8:17 PM
The most important data in the world comes from NASA satellites.
Here I plotted both hemispheres.
It shows that the Northern Hemisphere now absorbs more sunlight than the Southern Hemisphere and that both Hemispheres absorb more light than they radiate heat to space, leading to faster warming.
1/
Here I plotted both hemispheres.
It shows that the Northern Hemisphere now absorbs more sunlight than the Southern Hemisphere and that both Hemispheres absorb more light than they radiate heat to space, leading to faster warming.
1/
Reposted
And here is the percentage of the world's land area setting a new all-time monthly maximum temperature record in each decade:
October 6, 2025 at 4:26 PM
And here is the percentage of the world's land area setting a new all-time monthly maximum temperature record in each decade:
Reposted
Literally, yes
September 21, 2025 at 2:23 PM
Literally, yes
Reposted
'How bad is it, doc?' Today's cartoon by @tjeerdroyaards.com. More cartoons: www.cartoonmovement.com/search?query...
#worldleaders #autocrats #dictators
#worldleaders #autocrats #dictators
September 11, 2025 at 4:39 AM
'How bad is it, doc?' Today's cartoon by @tjeerdroyaards.com. More cartoons: www.cartoonmovement.com/search?query...
#worldleaders #autocrats #dictators
#worldleaders #autocrats #dictators
Reposted
The ocean heat content averaged over the Gulf of Mexico is now the highest on record -- surpassing even the crazy-high values we saw just last year.
bmcnoldy.earth.miami.edu/tropics/ohc/
@miamirosenstiel.bsky.social
bmcnoldy.earth.miami.edu/tropics/ohc/
@miamirosenstiel.bsky.social
September 8, 2025 at 3:11 PM
The ocean heat content averaged over the Gulf of Mexico is now the highest on record -- surpassing even the crazy-high values we saw just last year.
bmcnoldy.earth.miami.edu/tropics/ohc/
@miamirosenstiel.bsky.social
bmcnoldy.earth.miami.edu/tropics/ohc/
@miamirosenstiel.bsky.social
"Where is the bottom?" - A tour of the disappearing Vistula River with Prof. Szymon Malinowski, Warsaw 2025.
„Gdzie jest dno?” - Wycieczka po zanikającej Wiśle z prof. Szymonem Malinowskim, Warszawa 2025.
youtu.be/HbrpjfNWmyQ?...
„Gdzie jest dno?” - Wycieczka po zanikającej Wiśle z prof. Szymonem Malinowskim, Warszawa 2025.
youtu.be/HbrpjfNWmyQ?...
„Gdzie jest dno?” - Wycieczka po zanikającej Wiśle z prof. Szymonem Malinowskim, Warszawa 2025
YouTube video by Ramsey United
youtu.be
September 4, 2025 at 7:19 PM
"Where is the bottom?" - A tour of the disappearing Vistula River with Prof. Szymon Malinowski, Warsaw 2025.
„Gdzie jest dno?” - Wycieczka po zanikającej Wiśle z prof. Szymonem Malinowskim, Warszawa 2025.
youtu.be/HbrpjfNWmyQ?...
„Gdzie jest dno?” - Wycieczka po zanikającej Wiśle z prof. Szymonem Malinowskim, Warszawa 2025.
youtu.be/HbrpjfNWmyQ?...
Reposted
📢Global Carbon Budget 2024📢
Despite some predicting a peak in global fossil CO2 emissions, we estimate growth of 0.8% [-0.3% to 1.9%] in 2024. Maybe a peak next year?
Is it all bad news, or can we find some good news?
essd.copernicus.org/preprints/es...
1/
Despite some predicting a peak in global fossil CO2 emissions, we estimate growth of 0.8% [-0.3% to 1.9%] in 2024. Maybe a peak next year?
Is it all bad news, or can we find some good news?
essd.copernicus.org/preprints/es...
1/
November 13, 2024 at 7:15 AM
📢Global Carbon Budget 2024📢
Despite some predicting a peak in global fossil CO2 emissions, we estimate growth of 0.8% [-0.3% to 1.9%] in 2024. Maybe a peak next year?
Is it all bad news, or can we find some good news?
essd.copernicus.org/preprints/es...
1/
Despite some predicting a peak in global fossil CO2 emissions, we estimate growth of 0.8% [-0.3% to 1.9%] in 2024. Maybe a peak next year?
Is it all bad news, or can we find some good news?
essd.copernicus.org/preprints/es...
1/
Reposted
This is not normal. Japan is continuing its run of astonishing temperature records. The country has just had its hottest summer for the third year in a row, and by a substantial margin. Data: JMA
September 1, 2025 at 11:21 AM
This is not normal. Japan is continuing its run of astonishing temperature records. The country has just had its hottest summer for the third year in a row, and by a substantial margin. Data: JMA
Reposted
A minute of peace from my paddle on Lake Winnipeg this morning. It was nice to get up before my neighbours and enjoy the lake before it got wavy. I hope you find it as soothing as I do.
August 31, 2025 at 9:04 PM
A minute of peace from my paddle on Lake Winnipeg this morning. It was nice to get up before my neighbours and enjoy the lake before it got wavy. I hope you find it as soothing as I do.
Reposted
I hear that Europe might be affected the most?
August 28, 2025 at 7:16 PM
I hear that Europe might be affected the most?
Reposted
Possible #AMOC shutdown after 2100 in high-emission future: new study with PIK scientist @rahmstorf.bsky.social finds that this would cut the ocean’s northward heat supply, causing summer drying & winter extremes in NW Europe + shifts in tropical rainfall belts.
www.pik-potsdam.de/en/news/late...
www.pik-potsdam.de/en/news/late...
Possible North Atlantic overturning circulation shutdown after 2100 in high-emission future
28.08.2025 - Under high-emission scenarios, the Atlantic Meridional Overturning Circulation (AMOC), a key system of ocean currents that also includes the Gulf Stream, could shut down after the year 21...
www.pik-potsdam.de
August 28, 2025 at 3:07 PM
Possible #AMOC shutdown after 2100 in high-emission future: new study with PIK scientist @rahmstorf.bsky.social finds that this would cut the ocean’s northward heat supply, causing summer drying & winter extremes in NW Europe + shifts in tropical rainfall belts.
www.pik-potsdam.de/en/news/late...
www.pik-potsdam.de/en/news/late...
Reposted
Important study!
Headlining the Dutch news. In a new study my colleagues in Utrecht show there is a substantial risk that the #AMOC already starts to collapse this century. 🌊
nos.nl/nieuwsuur/co...
Read the paper here: doi.org/10.1029/2025...
nos.nl/nieuwsuur/co...
Read the paper here: doi.org/10.1029/2025...
Gevreesd kantelpunt in de Golfstroom mogelijk al halverwege deze eeuw bereikt
De Golfstroom, het systeem van zeestromingen dat een cruciale rol speelt in het klimaat, stort mogelijk al vanaf halverwege deze eeuw in.
nos.nl
August 26, 2025 at 6:10 PM
Important study!
Reposted
An update of my highly complex figure on atmospheric CO2 increase & ENSO (El Nino).
2024 had a record atmospheric increase. We expected high because of the ENSO phase, but it was higher than expected (cf 2015/2016).
Red line is adjusted for ENSO.
1/
2024 had a record atmospheric increase. We expected high because of the ENSO phase, but it was higher than expected (cf 2015/2016).
Red line is adjusted for ENSO.
1/
August 21, 2025 at 8:10 AM
An update of my highly complex figure on atmospheric CO2 increase & ENSO (El Nino).
2024 had a record atmospheric increase. We expected high because of the ENSO phase, but it was higher than expected (cf 2015/2016).
Red line is adjusted for ENSO.
1/
2024 had a record atmospheric increase. We expected high because of the ENSO phase, but it was higher than expected (cf 2015/2016).
Red line is adjusted for ENSO.
1/
Reposted
Nierównowaga w bilansie energetycznym Ziemi. Kolejna praca (10.1088/1748-9326/adaa8a) pokazuje wzrost tej nierównowagi O CZYNNIK 3 od początku wieku. Globalne ocieplenie będzie w najbliższych latach przyspieszać.
February 2, 2025 at 5:26 PM
Nierównowaga w bilansie energetycznym Ziemi. Kolejna praca (10.1088/1748-9326/adaa8a) pokazuje wzrost tej nierównowagi O CZYNNIK 3 od początku wieku. Globalne ocieplenie będzie w najbliższych latach przyspieszać.
Reposted
Some context: www.pnas.org/doi/10.1073/...
August 16, 2025 at 3:45 PM
Some context: www.pnas.org/doi/10.1073/...
Reposted
We, and young people, need help from people who understand the essence of climate science. See Forest versus Trees - columbia.edu/~jeh1/mailin... or its abbreviation - mailchi.mp/caa/seeing-t... also available on my Substack - jimehansen.substack.com/p/seeing-the...
August 6, 2025 at 12:04 PM
We, and young people, need help from people who understand the essence of climate science. See Forest versus Trees - columbia.edu/~jeh1/mailin... or its abbreviation - mailchi.mp/caa/seeing-t... also available on my Substack - jimehansen.substack.com/p/seeing-the...
Reposted
July's data for "Total Column Precipitable Water" was just released, and wouldn't you know it, the 36-month running average set another new record high.
Plain language summary: more floods.
Data: climatereanalyzer.org/research_too...
Plain language summary: more floods.
Data: climatereanalyzer.org/research_too...
August 9, 2025 at 1:06 PM
July's data for "Total Column Precipitable Water" was just released, and wouldn't you know it, the 36-month running average set another new record high.
Plain language summary: more floods.
Data: climatereanalyzer.org/research_too...
Plain language summary: more floods.
Data: climatereanalyzer.org/research_too...