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Johannes Quaas

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H-index: 59
Environmental science 52%
Geology 19%
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by Johannes Quaas

jquaas.bsky.social
Wow, this looks beautiful
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Reposted by: Johannes Quaas, Tuomas Mattila

hausfath.bsky.social
Last week the German Meteorological Society warned that "the 3-degree limit could be exceeded as early as 2050".

While not possible to fully rule out, the assessed warming scenarios we published in the IPCC AR6 report find this to be extremely unlikely.
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by Johannes Quaas

jquaas.bsky.social
That's really great, congratulations! And I'm happy my colleague Made Maahn @meteoleipzig.bsky.social helps make it happen!
robinjhogan.bsky.social
Robin Hogan @robinjhogan.bsky.social · 11d
It's official: WIVERN will be ESA's 11th Earth Explorer satellite, measuring winds deep inside hurricanes, fronts and other weather systems!
www.esa.int/Applications...
ESA selects WIVERN as 11th Earth Explorer mission
After meticulous preparation and rigorous evaluation, ESA’s Member States have selected WIVERN to become the 11th Earth Explorer mission to be implemented through the agency’s prestigious FutureEO pro...
www.esa.int
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by Robin J. Hogan — Reposted by: Johannes Quaas

robinjhogan.bsky.social
It's official: WIVERN will be ESA's 11th Earth Explorer satellite, measuring winds deep inside hurricanes, fronts and other weather systems!
www.esa.int/Applications...
ESA selects WIVERN as 11th Earth Explorer mission
After meticulous preparation and rigorous evaluation, ESA’s Member States have selected WIVERN to become the 11th Earth Explorer mission to be implemented through the agency’s prestigious FutureEO pro...
www.esa.int
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by Johannes Quaas

jquaas.bsky.social
The national project "WarmWorld" works on the new-generation global climate simulations at resolutions as high as 1 km. At @kit.edu a group of us met to discuss how to represent the cloud processes in clouds in such computationally-demanding models, to account for pollution effects on climate.
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by Johannes Quaas

jquaas.bsky.social
Currently at the annual meeting of the "Arctic amplification" collaborative research project. Discussion on how increases in convection in the Arctic make it more "tropical" with warming. ac3-tr.de funded by @dfg.de, partners @meteoleipzig.bsky.social, U Bremen, Köln, @awi.de, @tropos-de.bsky.social
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Reposted by: Johannes Quaas, Michael Wagner, Jamie Hannaford , and 8 more

hausfath.bsky.social
In a UN speech today, President Trump said that "all of these [climate] predictions were wrong".

Back in 2019 I led a research effort to digitize old climate model projections and assess how well they did. Turns out they got future warming pretty spot on!
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by Johannes Quaas

jquaas.bsky.social
amazing progress in just one year on understanding air pollution in cities, multifunctionality of ecosystems, aerosols as climate drivers, or the role of heat waves. Excellent keynote by Agnes Tomini from the Aix-Marseille school of economics
eco-n.org @unileipzig.bsky.social, funding by @dfg.de
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by Johannes Quaas

jquaas.bsky.social
Since one year, the Research Training Group "Economics of connected natural commons" studies the challenges of sustainably using ecosystems and the climate system as commons. We just come back from the first retreat between the 14 PhD candidates, advisers, and excellent invited external speakers.
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by Johannes Quaas

jquaas.bsky.social
By the way, Timo presented their nice paper demonstrating that climate attribution has the potential to change people's attitudes, and that people are even willing to pay for it: www.journals.uchicago.edu/doi/10.1086/...
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by Johannes Quaas — Reposted by: Friederike Otto, Mariana Madruga de Brito

jquaas.bsky.social
Hosted by @meteoleipzig.bsky.social @unileipzig.bsky.social @tropos-de.bsky.social , ECO-N research training group funded by @dfg.de
Great lectures by @sebastian-sippel.bsky.social @frediotto.bsky.social @mdebrito.bsky.social @zscheischlerjak.bsky.social and more!
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by Johannes Quaas — Reposted by: Friederike Otto

jquaas.bsky.social
The current Advanced Training Module on "Climate Attribution", joinly by our interdisciplinary research training group "Economics of Connected Natural Commons" and the Leipzig Graduate school on Clouds, aerosols and radiation sparked large interest: 65 PhD researchers from 7 countries!
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by Johannes Quaas — Reposted by: Vincent Noël

jquaas.bsky.social
Great piece from Nadir Jeevanjee. As a meteorologist I of course love it when forecasts prove correct but as a citizen I would have preferred it if climate change had been prevented on the basis of the forecasts
andrewdessler.com
Andrew Dessler @andrewdessler.com · Sep 4
nice article from Nadir Jeevanjee (is he on bluesky?) about predictions climate models got right. successful predictions are the gold standard of science.

5 forecasts early climate models got right – the evidence is all around you
theconversation.com/5-forecasts-...
5 forecasts early climate models got right – the evidence is all around you
From rising global temperatures to the fast-warming Arctic, early climate models predicted the changes half a century ago.
theconversation.com
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by A. E. Dessler — Reposted by: Johannes Quaas, Vincent Noël

andrewdessler.com
nice article from Nadir Jeevanjee (is he on bluesky?) about predictions climate models got right. successful predictions are the gold standard of science.

5 forecasts early climate models got right – the evidence is all around you
theconversation.com/5-forecasts-...
5 forecasts early climate models got right – the evidence is all around you
From rising global temperatures to the fast-warming Arctic, early climate models predicted the changes half a century ago.
theconversation.com
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by Johannes Quaas

jquaas.bsky.social
What a hubris. Leading back to the time before division of labor. The point is of course indeed, we all have to stop believing those in power
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by Johannes Quaas

jquaas.bsky.social
Fantastic collaboration within EU-funded Marie Curie Innovative Training Network "imiracli" especially with @isp-uv-es.bsky.social !
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by Johannes Quaas — Reposted by: Peter Thorne

jquaas.bsky.social
Cloud drop number is a key quantity to understand cloud processes. Getting it from satellites so far was very indirect. Gonzalez et al. @meteoleipzig.bsky.social @scadsai.bsky.social now created a machine-learning method to get it directly from satellite radiances ieeexplore.ieee.org/document/111...
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by Johannes Quaas

jquaas.bsky.social
I'm glad to contribute again!
ipcc.bsky.social
IPCC @ipcc.bsky.social · Aug 18
The #IPCC has announced the authors selected for its Seventh Assessment Report.

664 experts from 111 countries have been invited to participate as Coordinating Lead Authors, Lead Authors, & Review Editors.

🌍 51% from developing countries
🚺 46% women

🔗 bit.ly/AR7AuthorsPR
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Reposted by: Johannes Quaas, Valerie M. Delmotte, Richard S.J. Tol , and 17 more

ipcc.bsky.social
The #IPCC has announced the authors selected for its Seventh Assessment Report.

664 experts from 111 countries have been invited to participate as Coordinating Lead Authors, Lead Authors, & Review Editors.

🌍 51% from developing countries
🚺 46% women

🔗 bit.ly/AR7AuthorsPR
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by Ana Bastos — Reposted by: Johannes Quaas

anabastos.bsky.social
www.mdr.de/mdr-aktuell-...
Studie: Wälder in EU-Ländern nehmen weniger CO2-Emissionen auf | MDR.DE
Im Gespräch: Ana Bastos, Studienautorin und Geophysikerin der Uni Leipzig
www.mdr.de
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Reposted by: Johannes Quaas, Richard S.J. Tol, Wolfgang Crämer , and 3 more

helgethomas.bsky.social
Imagine all cars were electric, and then one Volkswagen engineer comes up with another idea …

#EMobility
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by Johannes Quaas

jquaas.bsky.social
How does cloud drop size distribution respond to aerosol? Hengqi Wang, visiting PhD researcher from Tsinghua university, used new data from satellite measurements of polarization from SRON/Netherlands to quantify the effect. Offsets systematically 7% of the aerosol-cloud forcing. rdcu.be/ezaeX
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by Johannes Quaas

jquaas.bsky.social
I fully agree. Science is not a World Cup with countries competing, but a collaborative effort. We abroad really need the American technology and ideas, and the stimulating exchange.
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Reposted by: Johannes Quaas, Ben Bond‐Lamberty, Richard Betts

davidho.bsky.social
As @pkrugman.bsky.social writes, this is a deliberate effort to destroy science.
For MAGA, Ignorance is Strength
Research cuts aren’t about shrinking government, they’re about killing science
paulkrugman.substack.com
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by Johannes Quaas

jquaas.bsky.social
Hopefully congresspeople understand this to the full extent. One cannot worsen climate change by subsidizing fossils and at the same time cut down climate research and so not work on understanding what is coming and on preparing adaptation. At least funding for NOAA climate research should increase.

by Johannes Quaas

jquaas.bsky.social
Haha who's performance? Certainly not the NOAA colleague's
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by Johannes Quaas

jquaas.bsky.social
This would be disastrous. I sincerely hope for reasonable lawmakers
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by Johannes Quaas

jquaas.bsky.social
That would be some relief. What would be our field without GFDL?
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by Johannes Quaas

jquaas.bsky.social
Great news indeed!
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by Johannes Quaas

jquaas.bsky.social
Übersicht zum Thema Aerosole und Klima, gemeinsam mit Mira Pöhlker @tropos-de.bsky.social , deutschsprachig, an physik-interessierte Leserschaft gerichtet:

Bessere Luftqualität erwärmt die Erde: Aerosole und Klima - Quaas - Physik in unserer Zeit onlinelibrary.wiley.com/doi/10.1002/...
Bessere Luftqualität erwärmt die Erde: Aerosole und Klima
Aerosolpartikel in der Atmosphäre wirken kühlend auf das Klima, weil sie Sonnenlicht reflektieren und auch Wolken mehr reflektieren lassen. Eine Verbesserung der Luftqualität wirkt deswegen, relativ ...
onlinelibrary.wiley.com
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