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Peter Pfleiderer

@klimapeter.bsky.social
616 followers 177 following 90 posts

Climate researcher at Leipzig University - Climate Causality & Attribution group (lim-climate-causality.github.io) interested in atmospheric circulation and weather extremes | cloud lover

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Reposted by Peter Pfleiderer
Francois Jobard @francoisjobard.bsky.social · 23/09/2026
Cette semaine on devrait toucher le fond niveau #sécheresse. Un tout début d'amélioration pluvieuse reste envisageable la semaine prochaine. Derrière cette "situation record" (Météo-France) : une mortalité des arbres sans exemple ! Dans le bois de Vincennes l'agonie des hêtres devient générale. 🥲
Évolution de l'indicateur national de sécheresse des sols en France. Graphe Meteo-France
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arno @helloarno.bsky.social · 23/09/2026
vs.
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Peter Pfleiderer @klimapeter.bsky.social · 03/09/2026
Der Sommer ist vorbei und wird uns in Erinnerung bleiben! In Leipzig gab es die krasse Hitzewelle Ende Juni. Der Sommer entspricht aber ungefähr dem, was wir beim jetzigen Fortschritt der globalen Erwärmung von einem Sommer erwarten sollten 😬 Deutlich schlimmere Sommer wären möglich 🫣
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KarSteN Haustein @khaustein.bsky.social · 31/08/2026
Globally, the hottest August in observed history is just about to end. In Western Europe, the summer of 2026 (June, July, August) has been the warmest as well. Compared to this year, 1976 (the famous UK summer) and 2003 (the hottest EU summer so far) look like amateurs in terms of heat (1/2)
Global map of temperature departures with most continental regions as well as the tropical Pacific in red (hot). Parts of Antarctica in blue (cold)

Source: http://www.karstenhaustein.com/climateMap of Europe with blue and cold patches for cold and hot temperature departures from the long-term climate average (1961-1990). France and the UK in red. All else rather blue.Map of Europe with blue and cold patches for cold and hot temperature departures from the long-term climate average (1961-1990). All of central Europe in red. Parts of the Atlantic in blueMap of Europe with blue and cold patches for cold and hot temperature departures from the long-term climate average (1961-1990). All of central and Southern Europe in red. No blue left anymore.
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Gernot Wagner @gwagner.com · 20/08/2026
Let's see whether this survives the editing process gwagner.com/delay
Author declaration: "The authors declare no competing interests, other than wanting a livable planet for their children and grandchildren."
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Greenpeace Luxembourg @greenpeacelux.bsky.social · 10/08/2026
Big Oil is literally burning the planet for profit. We are not mad enough. Governments must finally make big polluters pay for the damage they are causing. #MakePollutersPay
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Peter Pfleiderer @klimapeter.bsky.social · 24/08/2026
Kleiner Bericht über unsere Studie. Ich weiß nicht ganz, was mit der Überschrift gemeint ist, oder wie sie zu verstehen ist. Immerhin waren es ja "Forschende", die diesen Denkanstoß gegeben haben ... 🤔 www.tagesschau.de/wissen/klima...
tagesschau.de
Jahrhundertsommer? Warum Forschende neu denken müssen
Ein überaus heißer und trockener Sommer wie in diesem Jahr kann künftig normal sein. Das zumindest sagt die Klimaforschung. Die Frage ist nur: Wie sieht dann künftig ein Jahrhundertsommer aus? Von Flo...
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Leipzig Institute for Meteorology @meteoleipzig.bsky.social · 17/08/2026
New paper out by @klimapeter.bsky.social et al: Hot days become more clustered together, leading to longer periods and more intensified periods of extreme heat. In other words, hot summers become even hotter than 'average' summers (which get warmer as well). Very timely after this crazy summer 🔥
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Peter Pfleiderer @klimapeter.bsky.social · 17/08/2026
What is changing with extreme European summers? 🥵 We look at many simulated 100-year summers in western Europe to find out how current day extreme summers differ from similarly rare pre-industrial summers. @robinnoyelle.bsky.social and @sebastian-sippel.bsky.social doi.org/10.1029/2026...
doi.org
Heat Extremes Within Hot Summer Seasons Intensify More Than in Average Summers Under Global Warming
Rare heat summers today (with ≈ 100-year return period) show a different evolution of sub-seasonal temperatures than similarly rare summers in pre-industrial climate. Faster drying of soils in cu...
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World Meteorological Organization @wmo-global.bsky.social · 16/08/2026
This is the landscape unfolding across Western Europe during this very hot & dry summer. In contrast, much of eastern Europe & Scandinavia felt lower than ave. temperatures. More about the extreme weather affecting Europe & other parts of the world: bit.ly/4xzcZfg
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Adrian Leyser Sturm @leysersturm.eurosky.social · 06/08/2026
Next week will bring the 5th #heatwave to W/C Europe. It is expected to push Germany’s running average temperature for the summer above 20°C, a threshold that, at this point, had previously been reached only in 2003. Whether this will ultimately result in a new record, however, remains to be seen.
Average temperatures in Germany during 2026 summer season and average temperatures for summers since 1880.
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Madeleine Cuff @tinymaddie.bsky.social · 04/08/2026
Truly startling - across swathes of England and Wales, dozens weather stations recorded ZERO rainfall in July, for the first time in their history www.newscientist.com/article/2583...
newscientist.com
Parts of the UK endure first ever month without any rain | New Scientist
For the first time since records began, there was no rain at all for parts of southern England and Wales in July, in a “truly exceptional” month of heat and sunshine
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KarSteN Haustein @khaustein.bsky.social · 26/07/2026
In case anyone is still listening: 14.500 excess deaths have been recorded during the June heatwave in Germany alone. At least 70% (i.e. ~10.000 premature deaths) r due to man-made climate change in 1 week. The conservative RKI numbers r certainly a massive underestimate! www.rki.de/DE/Themen/Ge...
blue line showing normal mortality. red line showing excess mortality which skyrockets end of june 2026 due to extreme heat
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Leipzig Institute for Meteorology @meteoleipzig.bsky.social · 22/07/2026
New paper alert ‼️ Changes in atmospheric circulation patterns are - to a large part - responsible for the observed summer drought trend in Europe since 1980. The exact cause for these shifts remains uncertain. www.nature.com/articles/s41... Uni press release: www.uni-leipzig.de/en/newsdetai...
three panels with yellow and blue colours for soil moisture trends. mostly yellow for the total change in the top panel. light yellow changes in the bottom left panel for thermodynamics. some blue in the north and south but yellow in western and central parts in the bottom right panel for dynamics.
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Ana Bastos @anabastos.bsky.social · 22/07/2026
Drought has increased in Europe since 1980s: climate change or natural climate variability? 🌍🌡️🌬️ István Dunkl shows that hifts in large-scale atmospheric circulation explain ca. 55% of the soil moisture decline and amplify drying induced by thermodynamic changes 👇 w/ @sebastian-sippel.bsky.social
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Nahel Belgherze @wxnb.bsky.social · 20/07/2026
I've never seen anything like it. Salta, Argentina, has just recorded its hottest night on record during the climatologically coldest time of the year. The minimum overnight temperature did not fall below 26°C (78.8°F), pulverizing the previous monthly record by 7°C.
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Dr. Serge Zaka @sergezaka.bsky.social · 30/06/2026
➡️ INTENSITÉ : C'est désormais acquis. La vague de chaleur de juin 2026 dépasse la canicule de 2003, jusqu'ici référence absolue, en termes de pic d'intensité. ➡️ DURÉE : Au 30 juin, nous en sommes déjà au 14ᵉ jour de canicule, se rapprochant des 16 jours de 2003. 1/8
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Melaine Le Roy @subfossilguy.bsky.social · 30/06/2026
The 2003 heatwave (record in terms of intensity in F), was shattered by the June heatwave, occurring 1.5 month earlier! 🔥 Wait... temp. will not even drop below thresholds marking the end of a heatwave before the arrival of a new one expected as early as this weekend! ☠️ Via @sergezaka.bsky.social
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KarSteN Haustein @khaustein.bsky.social · 27/06/2026
Who knew that climate change and massive asphalt highways in the middle of a large city might not be the ideal combination. But what do I know? Also, who sold them this cheap material? Clearly, more heat resistent materials exist. #ClimateEmergency #Glutofen
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Charlotte Garden @charlottegarden.bsky.social · 23/06/2026
Irony is dead.
Extreme Heat: Improving governance and strengthening action around the world - cancelled
Date: 24 June 2026, 9:30 am - 12:00 pm Venue: LSE Shaw Library, Houghton St, Old Building, London, WC2A 2AE
We regret that this event has been cancelled due to the red extreme heat warning issued by the UK Met Office.
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KarSteN Haustein @khaustein.bsky.social · 21/06/2026
It shapes up to be a dangerously brutal and - likely - historic heatwave in Central Europe, especially France and its capital. #ClimateEmergency www.karstenhaustein.com/climate
Map of Europe with red and blue colors for anomalously hot and cool regiona. France and Germany deep red. Some light blue over European Russia.
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Natascha Strobl @nataschastrobl.bsky.social · 16/06/2026
Das ist übrigens eine Vermögens- und Erbschaftssteuer. Halt für Alle, die pflegebedürftig werden und deren Erben. Also Leute, die schlechter wohnen, weniger verdienen und härter arbeiten. Eigentum wird nur für Reiche geschützt.
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Laura Suarez-Gutierrez @drlaurasuarez.bsky.social · 10/06/2026
The most extreme heatwaves physically possible already today could dwarf all events in recent memory. And even more worrying, they occur successively after one or more extreme heatwaves in the same summer. 🔥 Paper: www.nature.com/articles/s43... @erichfischer.bsky.social @commsearth.nature.com
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Neil Grant @neilgrant.bsky.social · 03/06/2026
Chart of the day. The energy transition is happening in real time! 😍
Two area charts showing that in Australia's National Electricity Market, battery discharge replaced peaking gas at the evening demand peak between April 2025 and April 2026.
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Leipzig Institute for Meteorology @meteoleipzig.bsky.social · 01/06/2026
Check out all the events in Leipzig during this weeks "Aktionswoche gegen Rechts" Initiated and organized by wissenschaft-gegen-faschismus.de/index.php/ve... There is also an online program provided by various Universities and institutions across Germany
Pink leaflet with Program notes for every day from Tuesday to Friday this week. Put 'Leipzig' in the search bar to find out more: https://wissenschaft-gegen-faschismus.de/index.php/veranstaltungen/
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Leipzig Institute for Meteorology @meteoleipzig.bsky.social · 01/06/2026
Our institute will contribute with talks, a panel and a get-together on Thursday. Be part of the action! 🫵
red and white text which says 'Science against fascism' with an Actiion day on Thursday 4 June, starting at 3pm in Beckmann Lecture hall in Brüderstrasse 34red and white text which says 'Science against fascism' with the concrete program, starting with a welcome at 3pm and three talks, followed by a panel at 4:45pm.
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Auke Hoekstra @aukehoekstra.bsky.social · 13/05/2026
Interesting new paper documents clearly how the IAEA has been overestimating the growth of nuclear time and time again. It's the inverse of what I've documented for solar and batteries. doi.org/10.1016/j.er...
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International Glaciological Society @igsoc.bsky.social · 11/05/2026
Lilian Schuster @lilianschuster.bsky.social wins the Early Career Scientist Award given in recognition of significant scientific and/or community contributions to glaciology by an early career scientist. Full citation: www.igsoc.org/about/awards...
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David Ho @davidho.bsky.social · 02/05/2026
Yes, if AMOC shuts down, it may release hundreds of billions of tonnes of CO₂. You know what's guaranteed to release hundreds of billions of tonnes of CO₂ in the next few years? Our continued use of fossil fuels.
newscientist.com
Collapse of key ocean current may release billions of tonnes of carbon
If the Atlantic Meridional Overturning Circulation shut down, the knock-on effects could release hundreds of billions of tonnes of CO2, raising global temperatures even further
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Dr. Aaron Thierry @thierryaaron.bsky.social · 28/04/2026
"Our results show that non-survivable conditions are occurring during present-day heat events, all of which are below 35oC wet-bulb temperature. Of concern is regular exceedances of deadly thresholds for older people directly exposed across all events. " #ClimateEmergency
nature.com
Deadly heat stress conditions are already occurring - Nature Communications
The authors use a physiological approach, finding recent extreme heat events had deadly heat stress conditions, particularly for fully exposed older people. Conditions were well below wet-bulb tempera...
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Emily Theokritoff @etheokritoff.bsky.social · 28/04/2026
The climate #litigation pico session and splinter meeting are back at #EGU26! ⚖️ We’re looking forward to another round of enriching, highly interdisciplinary talks and discussions. Based on this year’s impressive line-up of abstracts and speakers, it’s set to be a great one.
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Carbon Brief @carbonbrief.org · 21/04/2026
Clean energy pushes fossil-fuel power into reverse for ‘first time ever’ | @mollylempriere.carbonbrief.org @ember-energy.org Read here: buff.ly/XtaYP1D
Renewables have passed coal power globally,. Global electricity generation n TWh, 2000-2025.
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Ed Hawkins @edhawkins.org · 14/04/2026
Revisiting the near-term projection from IPCC AR5 climatelabbook.substack.com/p/revisiting...
climatelabbook.substack.com
Revisiting the near-term projection from IPCC AR5
A more technical diversion back to 2013
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taz @taz.de · 08/04/2026
Das Massensterben von Migranten auf See ging auch diese Woche weiter. Doch für unsere Mitmenschen dort gibt es keinen Liveticker und kein Mitleid.
Geflüchtete warten im Ärmelkanal auf ein Boot. Dazu der Text: Den Weg zurück ins offene Meer fand er nicht, den Weg in die Herzen der Deutschen schon. Eine Nation litt mit „Timmy“, dem Wal. Zur gleichen Zeit trieben etwa 80 Menschen zwischen Libyen und der italienischen Insel Lampedusa im Mittelmeer. Doch erst mehr als 24 Stunden später, am Dienstag, kam die italienische Küstenwache den Menschen zur Hilfe. Da waren 19 der Insassen tot, offenbar erfroren, fünf waren in kritischem Zustand.Einen Tag später, am Mittwoch, starben 20 Migrant:innen bei einem Bootsunglück vor der Küste von Bodrum in der Türkei. Am Sonntag waren mindestens 40 Menschen elf Meilen vor der Küste von Sfax in Tunesien ertrunken.Schlagzeilen macht das alles nicht mehr. Mindestens 910 Tote Flüchtlinge und Migrant:innen gab es bisher in diesem Jahr im Mittelmeer, dazu mindestens 120 auf dem Weg von Westafrika zu den Kanaren und mindestens vier im Ärmelkanal. Im Januar waren es 459 Tote, so viele wie noch nie in einem Januar, seit 2014 begonnen wurde, offiziell zu zählen.
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Paul Ganderton @ecogeog.bsky.social · 30/03/2026
Beavers can help mitigate the effects of #climatechange by creating carbon sinks! www.nature.com/articles/s43...
nature.com
Beavers can convert stream corridors to persistent carbon sinks - Communications Earth & Environment
Beaver-induced hydrological change turned wetland into a net carbon sink with an approximate carbon storage of 100 tons per year, according to a comprehensive carbon budget analysis from a beaver wetl...
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Zack Labe @zacklabe.com · 29/03/2026
I had a feeling this was going to happen. Sad news, especially given the poor state of sea ice after this winter. Looks like we won't be getting any more data for Arctic sea-ice thickness and volume for a while from PIOMAS. See: psc.apl.uw.edu/research/pro...
Screenshot of text that says: "Important Notice (3/24/2026): 
NOAA NWS/NCEP has terminated the NCEP/NCAR R1 reanalysis as of March 18th, 2026. NCEP/NCAR R1 has been used as the atmospheric forcing data in the PIOMAS reanalysis . We had not been aware of this change in service which was apparently formally announced Feb 13. 2026. This means that we will have to find alternatives and generate a replacement. It will take considerable effort and time to update data streams, re-calibrate the model and generate updated time series. We don’t yet have a good sense if that’s possible with available funds and if so, when we will be able to resume production of a new PIOMAS time series. While a replacement of the NCAR/NCEP R1 as the forcing product makes ultimate sense, we would have wished for a longer time period to facilitate the transition. We are sorry what this means to our many users.  PIOMAS has been in production since March 2010 and we rarely missed updates by more than a couple of weeks (except for  government shutdowns). This will be longer. Check back here for updates! "
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Lauri Myllyvirta @laurimyllyvirta.bsky.social · 17/03/2026
New from us: how Pakistan's solar boom is dampening the impact of the Hormuz crisis on the country. Solar power allowed LNG&diesel imports to fall after the previous gas crisis in 2021-22, with the solar boom set to avoid $7bn in fossil fuel import costs this year.
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Valérie Masson-Delmotte @valmasdel.bsky.social · 16/03/2026
Great visualisation tool for daily, monthly and annual mean global temperature pulse.climate.copernicus.eu
pulse.climate.copernicus.eu
Climate Pulse - Near real-time updates of global climate variables
Interactive global climate monitoring with interactive visualisations of air temperature and sea surface temperature from the Copernicus Climate Change Service (C3S).
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Leipzig Institute for Meteorology @meteoleipzig.bsky.social · 09/03/2026
New paper out in @ioppublishing.bsky.social : One specific southerly-flow regime accounts for the vast majority of heatwave days in Western Europe. Also, 70% of the observed ‘excess’ warming (relative to global mean) is attributed to an increase in this ... (1/2) iopscience.iop.org/article/10.1...
Number of heatwave days per summer identified based
on the criterion of at least 3 consecutive days with SAT exceeding the 90th percentile over at least 30% of Western Europe, coloured by the corresponding RMM-VAE regime
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Climate Analytics @climateanalytics.org · 09/02/2026
🌲 The #ForestNavigator Data Explorer is now live! Explore high-resolution EU forest data on climate mitigation, adaptation and forest health. Maps are freely downloadable. More Portal components coming soon! #ClimateAction 👉 fn-portal.iiasa.ac.at
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Peter Thorne @peterthorne.bsky.social · 28/01/2026
New discussion paper just dropped that’s taken shall we say a little work to get this far … essd.copernicus.org/preprints/es... please be kind. Not on an at all sensitive topic in the slightest.
essd.copernicus.org
How well can we quantify when 1.5 °C of global warming has been exceeded?
Abstract. Parties to the 2015 Paris Agreement agreed to limit the long-term increase in global average temperature to well below 2 °C and pursue efforts to keep temperatures below 1.5 °C relative to p...
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Chris Smith @cjsmith.eu · 27/01/2026
D & A style attribution with fair and HadCRUT5 updated to 2025 (emissions extrapolated beyond 2022, but should make little difference) [code: github.com/chrisroadmap...
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Peter Pfleiderer @klimapeter.bsky.social · 15/01/2026
Summer temperatures have strongly been influenced by circulation changes in the northern mid-latitudes. In our new study we evaluate and compare 4 statistical and ML methods that decompose trends into a "thermodynamical" and a "circulation induced" part. wcd.copernicus.org/articles/7/8...
wcd.copernicus.org
Considerable yet contrasting regional imprint of circulation change on summer temperature trends across the Northern hemisphere mid-latitudes
Abstract. Rising summer temperatures and more frequent heat extremes are well-documented outcomes of anthropogenic climate change. However, the extent to which atmospheric circulation changes contribu...
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KarSteN Haustein @khaustein.bsky.social · 14/01/2026
[...] We consider it more likely that the recent rate of global warming has been larger than anticipated, exceeding both the previous trend and what would be expected when considering only the observed pattern of greenhouse gas emissions. berkeleyearth.org/global-tempe...
Graph that shows black dots for the annual average mean temperature (rising from 1970 to 2025) and the underlying contributions from GHGs in various shades of red.5 Panels that schematically show the contribution to the global temperature change during the last 10 years. Red and blue colours indicate warming or cooling contributions
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Tim Osborn @timosbornclim.bsky.social · 14/01/2026
Most 2025 global temperatures are now out (degrees C above 1850-1900 baseline) 1.41 HadCRUT5 1.44 Berkeley 1.46 JRA-3Q 1.47 Copernicus 1.53 DCENT-I NOAA and NASA GISS values will be public at 2pm UK time and but based on already public Jan-Nov data they will likely be between 1.3 and 1.4 degC.
Multi-dataset comparison of global temperatures from 1850-2025, with 2025 values highlighted in a separate panel for each individual dataset. Baseline is a combination of 1850-1900 means.
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Copernicus ECMWF @copernicusecmwf.bsky.social · 14/01/2026
🌡️ 2025 was the third-warmest year on record, with a global average temperature 0.59°C above the 1991–2020 average & 1.47°C above the 1850–1900 pre-industrial level. It was 0.13°C below 2024, the warmest year on record, and only 0.01°C cooler than 2023. @ecmwf.int ⬇️
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Peter Pfleiderer @klimapeter.bsky.social · 05/01/2026
🙀 Don't forget to submit your abstract for #EGU26 And please consider submitting to our nice session on Synoptic and Large-Scale Circulation Dynamics 😻 www.egu26.eu/session/56938
egu26.eu
Session CL3.1.1
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Peter Pfleiderer @klimapeter.bsky.social · 19/11/2025
I'm to announce our session on Synoptic and Large-Scale Circulation Dynamics at #EGU26 www.egu26.eu/session/56938 ... and I'm looking forward to read your abstracts together with @mittermeierm.bsky.social Jan Stryhal, Christoph Beck, Ileana Bladé
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Peter Pfleiderer @klimapeter.bsky.social · 15/12/2025
Interesting update on SSTs and the state of warming:
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