Climate scientist investigating weather and climate extremes, professor @ETH_en Zurich, IPCC AR6 lead author, @erichfischer.bsky.social
Zurich, Switzerland
Joined June 2009
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How much hotter could it get?
While the US Midwest and western Europe are experiencing scorching heatwaves, we have a paper on possible worst-case heatwaves in exactly those regions being published today in Nature Communications 🧵nature.com/articles/s41467-0…
Wetterextreme und Sommer 2025
Ich war gestern Gast im @srfnews Tagesgespräch bei Karoline Arn. Ich habe die Wetterereignisse des Sommers 2025 eingeordnet und über unsere laufende Forschung an der @ETH gesprochen.
srf.ch/audio/tagesgespraech/…
Already 34.5°C at 13:40 in Basel! Could get a very warm opening game at @UEFAWomensEURO #WEURO2025 unless there are thunderstorms.
Preliminary comparison of the large-scale weather situation during the 1957 Valencia flood (left) and conditions yesterday (right).
Remarkably similar but now happening in a warmer and moister atmosphere.
en.wikipedia.org/wiki/1957_V…
Erich Fischer retweeted
The scale of the flooding currently unfolding in Valencia, Spain is unfathomable. This is footage from Chiva, where a jaw-dropping 343 mm of rain was recorded in just 4 hours earlier today, between 4:30 PM and 8:30 PM.
Video credit: Nalabcer
Again and again and again...
Yet another cut-off low causing devastating floods this year. This time along the Spanish coast. More than 200-350mm of rain today and it is not over yet. Well-known weather systems are today occurring in a warmer and moister atmosphere.
The weather conditions, referred as to DANA (depresión aislada en niveles) i.e. cut-off low, were forecasted days ahead and warnings had been issued: nitter.cf/AEMET_Esp/status/18509…
The reported rainfall amounts in Chiva outside Valencia sound surreal:
491.2mm rain in 8 hours
160mm of rain in 1 hour
(for reference the 2021 Ahr flood was caused by 148mm spread over 2 days and the annual rainfall total is <1000mm across much of Europe)
nitter.cf/AEMET_CValencia/status…
Hace una hora que apenas llueve en Chiva.
491.2 l/m² se han registrado en el pluviómetro de la @CHJucar, prácticamente todo desde las 16 horas, es decir, el acumulado lo ha sido en 8 horas, con registros de hasta 160 en una hora.
"Dunkelflaute" with low wind and solar PV potential
Interesting weather conditions today with coinciding low wind and relatively low solar PV potential (pointed out by @JZ_Lpz)
It will be crucial to understand the frequency and persistence of "Dunkelflauten" in a warming climate.
The current large-scale flow causing extreme rainfall in France and in coming hours in Italy looks remarkably similar to the 2023 September spatially compound extremes shifted few hundreds kilometer eastwards. September 2023 cause floods over Portugal/Spain and Greece/Lybia.
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Let us hope that these forecasts turn out to be wrong. If not, Southern Italy may be next in facing extreme precipitation amounts.
meteologix.com/uk/model-char…
Erich Fischer retweeted
3rd General Assembly started at the KUBUS Centre @helmholtz_de📍Leipzig gathering 45 people!
📌welcoming remarks @ZscheischlerJak
📌intro @DimCoumou
📌Methods results, gaps, discussions @runge_jakob @miguelangelft @m_gonzc and Martin Rabel
👉More: xaida.eu/2024-ga/
Erich Fischer retweeted
Ice melting at Konkordiaplatz, Great Aletschgletscher, continues. No relief for #glaciers...
4 meters of ice loss over the thickest ice of the European Alps in the year 2024 😢
Stay posted for the publication of our results on 1 Oct
@glamos_ch @VAW_glaciology @scnatCH
Here is, where we used to have lunch during @EuroGeosciences from #EGU05 to #EGU24, talking about heavy precipitation and flooding in a warming climate for nearly two decades...
Increasing probability of record-shattering precipitation
Higher precipitation variability in a warming climate amplifies the probability of record-shattering extreme precipitation as shown in our new study led by @IE_deVries.
The probability of record-shattering extreme #precipitation events is projected to be higher in a changing than a stationary #climate at the end of the century, with the steepest rise in vulnerability in the #tropics.
Read the full article at 👉
nature.com/articles/s43247-0…
Yet another record-shattering extreme…
Erich Fischer retweeted
Schalten Sie ein zur ARTE-Produktion „Europa glüht“ mit Prof. Erich Fischer! Am Sonntag, 1. September um ca. 22.45 Uhr auf SRF 1 erfahren Sie mehr über die Auswirkungen des Klimawandels auf unseren Kontinent. brnw.ch/21wMczX
Viel mehr Hitzetage
Eindrückliche Visualisierung der beobachteten Zunahme von Hitzetagen in der Schweiz von @ScherrerSimon @meteoschweiz . Die Zunahme ist besonders ausgeprägt in Gebieten hoher Bevölkerungsdichte.
linkedin.com/posts/simonsche…
"Even slowing down the pace of warming would reduce the probability of record-shattering heat"
Explainer by @daisydunnesci (@CarbonBrief) on record-shattering heat with quotes by @RobertVautard, @clairrbarnes and myself.
Based on work with @ssippel87 @Knutti_ETH @usys_ethzh
NEW – Explainer: Why is climate change causing ‘record-shattering’ extreme heat? | @daisydunnesci w/ comment from @RobertVautard @erichfischer
Read here: buff.ly/4dBsuKf
Erich Fischer retweeted
“The climate currently behaves like a guy who would come and jump a meter farther than anyone before,” @erichfischer said. “You would think it’s an athlete on steroids.”
"The Era of Runaway Heat Records Is Here" report from @BNNBloomberg ▶️bnnbloomberg.ca/investing/20…
