Thomas Boettcher
@thomas-boettcher.bsky.social
collecting #PlanetaryBoundaries data.
#climate is a feedback structure.
#biodiversity #PFAS
engineer applied physics
318ppm=677GtC
600+300GtC
https://www.facebook.com/profile.php?id=100014586580860
https://www.youtube.com/@gautingmusik9561
#climate is a feedback structure.
#biodiversity #PFAS
engineer applied physics
318ppm=677GtC
600+300GtC
https://www.facebook.com/profile.php?id=100014586580860
https://www.youtube.com/@gautingmusik9561
Pinned
#0S.1d BlueSky thread 0S
0=overpopulation 8.2bn humans
1=climate 3W/m² +C-pollution 422ppm +CH4
2=biosphere +extinction
3=land use -1%soil lost/a
4= N P
5= plastic, nuclear waste, Pestizid 350_000 chemicals
6=green+blue+water
7=ocean: look for new variables
8=aerosols PFAS
9=ozone hole is back
0=overpopulation 8.2bn humans
1=climate 3W/m² +C-pollution 422ppm +CH4
2=biosphere +extinction
3=land use -1%soil lost/a
4= N P
5= plastic, nuclear waste, Pestizid 350_000 chemicals
6=green+blue+water
7=ocean: look for new variables
8=aerosols PFAS
9=ozone hole is back
Reposted by Thomas Boettcher
I will be giving the final @gsiexeter.bsky.social seminar of 2025 "Living beyond limits: Consequences of missing the decisive decade for preserving our planet’s life-supporting systems." 10th Dec 2:30pm UK time. You can join remotely👇
universityofexeter.zoom.us/j/9357183404...
universityofexeter.zoom.us/j/9357183404...
December 5, 2025 at 12:20 PM
I will be giving the final @gsiexeter.bsky.social seminar of 2025 "Living beyond limits: Consequences of missing the decisive decade for preserving our planet’s life-supporting systems." 10th Dec 2:30pm UK time. You can join remotely👇
universityofexeter.zoom.us/j/9357183404...
universityofexeter.zoom.us/j/9357183404...
Reposted by Thomas Boettcher
Die Ära der Konsequenzen aus unserem kollektiven Scheitern zieht langsam in die universitäre Lehre ein. Auch ich habe 2024/2025 viele meiner Lehrveranstaltungen umgestellt, weg von versagender Klimapolitik, hin zu Erklärungen für dieses Versagen (verstehen hilft) und zu den Rest-Handlungsspielräumen
December 5, 2025 at 12:47 PM
Die Ära der Konsequenzen aus unserem kollektiven Scheitern zieht langsam in die universitäre Lehre ein. Auch ich habe 2024/2025 viele meiner Lehrveranstaltungen umgestellt, weg von versagender Klimapolitik, hin zu Erklärungen für dieses Versagen (verstehen hilft) und zu den Rest-Handlungsspielräumen
Reposted by Thomas Boettcher
Well worth a watch.
"And in the Arctic, they're already living in a 3°C or 4°C world. So it's important to understand that the global average number doesn't really tell us everything we need to know..."
www.youtube.com/live/XP4Nx--...
"And in the Arctic, they're already living in a 3°C or 4°C world. So it's important to understand that the global average number doesn't really tell us everything we need to know..."
www.youtube.com/live/XP4Nx--...
Global climate update: Recent trends, what surprises may lurk, and honest thoughts on our trajectory
YouTube video by Weather West
www.youtube.com
December 5, 2025 at 2:17 PM
Well worth a watch.
"And in the Arctic, they're already living in a 3°C or 4°C world. So it's important to understand that the global average number doesn't really tell us everything we need to know..."
www.youtube.com/live/XP4Nx--...
"And in the Arctic, they're already living in a 3°C or 4°C world. So it's important to understand that the global average number doesn't really tell us everything we need to know..."
www.youtube.com/live/XP4Nx--...
Reposted by Thomas Boettcher
Zu meinen, von „hocheffizienter Verbrennung“ nicht nur zu faseln, sondern damit die ohnehin zu geringen Bestrebungen der Klimatransformation zu Gunsten am Gestern klebender, aber magischer Denke aufweichen zu müssen, ist im Lichte des 2. Hauptsatzes der Thermodynamik ein Verbrechen an der Menschheit
December 5, 2025 at 8:03 AM
Zu meinen, von „hocheffizienter Verbrennung“ nicht nur zu faseln, sondern damit die ohnehin zu geringen Bestrebungen der Klimatransformation zu Gunsten am Gestern klebender, aber magischer Denke aufweichen zu müssen, ist im Lichte des 2. Hauptsatzes der Thermodynamik ein Verbrechen an der Menschheit
Reposted by Thomas Boettcher
the very organisms that drive deep-sea carbonate burial—plankton and other calcifying species—are themselves increasingly threatened by acidifying oceans and continued CO₂ emissions. Any potential stabilizing effect would therefore come only after severe and irreversible ecological loss…(1000s a)
December 4, 2025 at 10:23 AM
the very organisms that drive deep-sea carbonate burial—plankton and other calcifying species—are themselves increasingly threatened by acidifying oceans and continued CO₂ emissions. Any potential stabilizing effect would therefore come only after severe and irreversible ecological loss…(1000s a)
Reposted by Thomas Boettcher
Fast 60 Prozent plus bei E-Auto-Zulassungen. Und wann kommen jetzt endlich die hocheffizienten Verbrenner?
www.tagesschau.de/wirtschaft/u...
www.tagesschau.de/wirtschaft/u...
tagesschau.de - die erste Adresse für Nachrichten und Information
tagesschau.de - die erste Adresse für Nachrichten und Information: An 365 Tagen im Jahr, rund um die Uhr aktualisiert - die wichtigsten News des Tages
tagesschau.de
December 3, 2025 at 8:42 PM
Fast 60 Prozent plus bei E-Auto-Zulassungen. Und wann kommen jetzt endlich die hocheffizienten Verbrenner?
www.tagesschau.de/wirtschaft/u...
www.tagesschau.de/wirtschaft/u...
Reposted by Thomas Boettcher
Neuer Blogpost zum "hocheffizienten Verbrenner" - und der Grund weshalb Merz uns diesen Quatsch erzählt.
@pinzler.bsky.social @graslutscher.de @christianstoecker.de
open.substack.com/pub/heinerm/...
@pinzler.bsky.social @graslutscher.de @christianstoecker.de
open.substack.com/pub/heinerm/...
Hocheffiziente Verbrenner, my ass: Physik, Ökonomie und das kulturelle Trostangebot
Warum Friedrich Merz‘ Verbrenner-Rettung an Sadi Carnot scheitert – und warum er sie uns trotzdem verkauft.
open.substack.com
December 1, 2025 at 7:58 AM
Neuer Blogpost zum "hocheffizienten Verbrenner" - und der Grund weshalb Merz uns diesen Quatsch erzählt.
@pinzler.bsky.social @graslutscher.de @christianstoecker.de
open.substack.com/pub/heinerm/...
@pinzler.bsky.social @graslutscher.de @christianstoecker.de
open.substack.com/pub/heinerm/...
Reposted by Thomas Boettcher
🆕Der neue „Breaking the Plastic Wave” Bericht kommt zu dem Schluss, dass sich die Plastikverschmutzung ohne ehrgeizige systemische Maßnahmen bis 2040 verdoppeln wird, was fast einer Müllwagenladung Plastikmüll pro Sekunde entspricht, und damit doppelt so schnell wächst wie die Abfallwirtschaft.
🆕'Breaking the Plastic Wave' report is out, concluding that without ambituous systemic measures #plastic pollution will double until 2040 equivalent to dumping nearly a 🛻 garbage truck worth of plastic waste every second since, growing twice as fast as waste management.
www.pew.org/en/research-...
www.pew.org/en/research-...
December 3, 2025 at 2:30 PM
🆕Der neue „Breaking the Plastic Wave” Bericht kommt zu dem Schluss, dass sich die Plastikverschmutzung ohne ehrgeizige systemische Maßnahmen bis 2040 verdoppeln wird, was fast einer Müllwagenladung Plastikmüll pro Sekunde entspricht, und damit doppelt so schnell wächst wie die Abfallwirtschaft.
Reposted by Thomas Boettcher
2000 kg Metal bewegen um 150 kg zu transportieren hat ausgedient, oder wir haben ausgedient. Seit Paris haben wir 900 Millionen neue Autos. Elektro war < 6%.
Autos raus, oder Menschen aus.
"Electric vehicles can not replace the existing fleet to say nothing of meeting growing demand"
Autos raus, oder Menschen aus.
"Electric vehicles can not replace the existing fleet to say nothing of meeting growing demand"
December 2, 2025 at 9:35 PM
2000 kg Metal bewegen um 150 kg zu transportieren hat ausgedient, oder wir haben ausgedient. Seit Paris haben wir 900 Millionen neue Autos. Elektro war < 6%.
Autos raus, oder Menschen aus.
"Electric vehicles can not replace the existing fleet to say nothing of meeting growing demand"
Autos raus, oder Menschen aus.
"Electric vehicles can not replace the existing fleet to say nothing of meeting growing demand"
Reposted by Thomas Boettcher
Effiziente Verbrenner? So effizient sind verschiedene Antriebsarten: Bei E-Fuels geht viel Energie bei der Produktion verloren und der Verbrennungsmotor produziert mehr Wärme als Bewegung. Ein E-Auto setzt die Elektroenergie direkt in Bewegung um und ist deswegen viel effizienter. #scientists4future
December 2, 2025 at 11:57 AM
Effiziente Verbrenner? So effizient sind verschiedene Antriebsarten: Bei E-Fuels geht viel Energie bei der Produktion verloren und der Verbrennungsmotor produziert mehr Wärme als Bewegung. Ein E-Auto setzt die Elektroenergie direkt in Bewegung um und ist deswegen viel effizienter. #scientists4future
Reposted by Thomas Boettcher
December 2, 2025 at 10:24 PM
A Holistic View of Climate Sensitivity - www.annualreviews.org/content/jour...
A Holistic View of Climate Sensitivity
The notion of climate sensitivity has become synonymous with equilibrium climate sensitivity (ECS), or the equilibrium response of the Earth system to a doubling of CO2. But there is a hierarchy of me...
www.annualreviews.org
December 2, 2025 at 11:07 AM
A Holistic View of Climate Sensitivity - www.annualreviews.org/content/jour...
Reposted by Thomas Boettcher
Excited to share that our recent study on the impact of commercial cooking on air quality in London during COVID has been featured in the Research Highlight of @nature.com
Check the original paper: doi.org/10.5194/acp-... @imperialsph.bsky.social @imperialmed.bsky.social @granthamicl.bsky.social
Check the original paper: doi.org/10.5194/acp-... @imperialsph.bsky.social @imperialmed.bsky.social @granthamicl.bsky.social
December 2, 2025 at 12:22 AM
Excited to share that our recent study on the impact of commercial cooking on air quality in London during COVID has been featured in the Research Highlight of @nature.com
Check the original paper: doi.org/10.5194/acp-... @imperialsph.bsky.social @imperialmed.bsky.social @granthamicl.bsky.social
Check the original paper: doi.org/10.5194/acp-... @imperialsph.bsky.social @imperialmed.bsky.social @granthamicl.bsky.social
Reposted by Thomas Boettcher
November 2025 was the third warmest November on record in ERA5 at 1.54C above preindustrial levels – below only the records set in the prior two years (2023 and 2024):
December 2, 2025 at 6:42 AM
November 2025 was the third warmest November on record in ERA5 at 1.54C above preindustrial levels – below only the records set in the prior two years (2023 and 2024):
Reposted by Thomas Boettcher
New study from our MICROFATE expedition that crossed the North #Pacific in 2019 finds high #microplastic levels in the water column (8-2600 items m–3) & in sediments (1100-3200 items kg–1), mostly very small particles (<20um) and surprisingly high levels at >5000m depth.
pubs.acs.org/doi/10.1021/...
pubs.acs.org/doi/10.1021/...
Plastics from Surface to Seabed: Vertical Distribution of (Micro)plastic Particles in the North Pacific Ocean
In this study, the vertical distribution of microplastic items across the water column and deep-sea sediments in the North Pacific Ocean, at depths exceeding 5 km, was investigated, covering two previ...
pubs.acs.org
December 2, 2025 at 9:23 AM
New study from our MICROFATE expedition that crossed the North #Pacific in 2019 finds high #microplastic levels in the water column (8-2600 items m–3) & in sediments (1100-3200 items kg–1), mostly very small particles (<20um) and surprisingly high levels at >5000m depth.
pubs.acs.org/doi/10.1021/...
pubs.acs.org/doi/10.1021/...
Reposted by Thomas Boettcher
Der Polarwirbel ist am zusammenbrechen. Das gab es so früh im Winter bislang nur zwei bis drei Mal und die Konsequenz sind Kaltluftausbrüche aus der Arktis, aber auch das Gegenteil auf engstem Raum.
A future historian might mark this moment ... but for the fact that 'a future historian' is an oxymoron.
December 2, 2025 at 7:16 AM
Der Polarwirbel ist am zusammenbrechen. Das gab es so früh im Winter bislang nur zwei bis drei Mal und die Konsequenz sind Kaltluftausbrüche aus der Arktis, aber auch das Gegenteil auf engstem Raum.
Reposted by Thomas Boettcher
Here in CO₂ equivalents (transliterating atmospheric concentration changes of other greenhouse gases to an equivalent CO₂ concentration change).
This makes it look even more steep, as the CO₂ forcing is logarithmic, increasing by about 4 W/m² for every doubling of the concentration.
This makes it look even more steep, as the CO₂ forcing is logarithmic, increasing by about 4 W/m² for every doubling of the concentration.
December 2, 2025 at 2:38 AM
Here in CO₂ equivalents (transliterating atmospheric concentration changes of other greenhouse gases to an equivalent CO₂ concentration change).
This makes it look even more steep, as the CO₂ forcing is logarithmic, increasing by about 4 W/m² for every doubling of the concentration.
This makes it look even more steep, as the CO₂ forcing is logarithmic, increasing by about 4 W/m² for every doubling of the concentration.
Reposted by Thomas Boettcher
The problem with forcing based estimates, is that this doesn't take into account the recent aerosol forcing increase.
The IPCC methodology assumes natural aerosols from e.g. forest fires are anthropogenic (but their CO₂ isn't..).
@drjamesehansen.bsky.social ea is excluded:
bsky.app/profile/leon...
The IPCC methodology assumes natural aerosols from e.g. forest fires are anthropogenic (but their CO₂ isn't..).
@drjamesehansen.bsky.social ea is excluded:
bsky.app/profile/leon...
December 1, 2025 at 1:09 PM
The problem with forcing based estimates, is that this doesn't take into account the recent aerosol forcing increase.
The IPCC methodology assumes natural aerosols from e.g. forest fires are anthropogenic (but their CO₂ isn't..).
@drjamesehansen.bsky.social ea is excluded:
bsky.app/profile/leon...
The IPCC methodology assumes natural aerosols from e.g. forest fires are anthropogenic (but their CO₂ isn't..).
@drjamesehansen.bsky.social ea is excluded:
bsky.app/profile/leon...
Reposted by Thomas Boettcher
It's been quite something to see one of the world's leading climate scientists, James Hansen, being vilified the past years for presenting data showing the rapid acceleration of global and regional warming, associated with continued greenhouse gas emissions and rapid reduction of air pollution.
November 30, 2025 at 12:50 PM
It's been quite something to see one of the world's leading climate scientists, James Hansen, being vilified the past years for presenting data showing the rapid acceleration of global and regional warming, associated with continued greenhouse gas emissions and rapid reduction of air pollution.
Reposted by Thomas Boettcher
#Windkraftanlagen werden wegen #Mikroplastik von Rotorblättern kritisiert. Dabei sind die Mengen vergleichsweise gering und ziemlich unproblematisch. Textilien, Schuhe oder Autoreifen sind hier ein viel größeres Problem. Wollt ihr lieber schädliche Erdgas- und Kohlekraftwerke?
November 29, 2025 at 7:00 AM
#Windkraftanlagen werden wegen #Mikroplastik von Rotorblättern kritisiert. Dabei sind die Mengen vergleichsweise gering und ziemlich unproblematisch. Textilien, Schuhe oder Autoreifen sind hier ein viel größeres Problem. Wollt ihr lieber schädliche Erdgas- und Kohlekraftwerke?
Reposted by Thomas Boettcher
You might turn off the tap and also read our new 2025 State of the Climate Report here where we wrote "We are hurtling toward climate chaos. The planet's vital signs are flashing red" doi.org/10.1093/bios...
November 16, 2025 at 8:41 PM
You might turn off the tap and also read our new 2025 State of the Climate Report here where we wrote "We are hurtling toward climate chaos. The planet's vital signs are flashing red" doi.org/10.1093/bios...
Reposted by Thomas Boettcher
In our Climate Report my coauthors and I say: We are hurtling toward climate chaos. The planet's vital signs are flashing red. Consequences of human-driven alterations of the climate are no longer future threats but are here now. Read report here doi.org/10.1093/bios...
The 2025 state of the climate report: a planet on the brink
We are hurtling toward climate chaos. The planet's vital signs are flashing red. The consequences of human-driven alterations of the climate are no longer
doi.org
November 22, 2025 at 11:10 PM
In our Climate Report my coauthors and I say: We are hurtling toward climate chaos. The planet's vital signs are flashing red. Consequences of human-driven alterations of the climate are no longer future threats but are here now. Read report here doi.org/10.1093/bios...
Reposted by Thomas Boettcher
Reposted by Thomas Boettcher
Das Autoparken in Städten muss teurer sein als die Jahreskarte für die öffentlichen Verkehrsmittel. Zürich zeigt, wie es geht. 👏🚋💚
📷 @vcoe.bsky.social 👍
📷 @vcoe.bsky.social 👍
November 28, 2025 at 6:01 AM
Das Autoparken in Städten muss teurer sein als die Jahreskarte für die öffentlichen Verkehrsmittel. Zürich zeigt, wie es geht. 👏🚋💚
📷 @vcoe.bsky.social 👍
📷 @vcoe.bsky.social 👍
Reposted by Thomas Boettcher
SETTING: SOMETIME IN THE FUTURE: We were hurtling towards climate chaos which ended up really hurting the economy. More info here: doi.org/10.1093/bios...
November 27, 2025 at 10:02 PM
SETTING: SOMETIME IN THE FUTURE: We were hurtling towards climate chaos which ended up really hurting the economy. More info here: doi.org/10.1093/bios...