New study from #CLICCS researcher Jakob Deutloff finds no strong evidence for a tipping point chain reaction from carbon-cycle elements like #permafrost or the #Amazon.
However, 9 of 16 tipping points could still be crossed under current policies.
#Climate action remains key. 🧪 https://www.cliccs.uni-hamburg.de/about-cliccs/news/2025-news/2025-04-14-tipping-points.html @MPI_Meteo @uniofexeter @gsi_exeter@bird.makeup

⁉️ Has the German #coal phase-out really reduced #emissions? Only if EU allowances are deleted. Without coordination, effects may shift or even backfire. Read the new #CLICCS study about overlapping #climate policies by economist Grischa Perino: 🧪 https://www.cliccs.uni-hamburg.de/about-cliccs/news/2025-news/2025-04-14-pm-overlapping-climate-policies.html

📷 Snapshot Seychelles No 6
🌴 The Coco de Mer is a botanical wonder, a case of "island gigantism." This palm species has separate male and female plants and is found only on the Seychelles, reaching heights of over 30 meters, #CLICCS geographer Beate Ratter reports.

#climatechange #biodiversity @hereon

❄️ A recent @CNN article by Laura Paddison features Prof. Dirk Notz from #CLICCS. Arctic temperatures are soaring, up to 20°C above normal, leading to the lowest February sea ice levels recorded. “We can wipe out entire landscapes.”
https://edition.cnn.com/2025/03/12/climate/arctic-sea-ice-heat-downward-spiral/index.html #ClimateChange #Arctic

🌍 CLICCS in a nutshell – which climate futures are not just possible, but plausible?
#CLICCS #science #climate #climatechange

💰 Weaker ocean circulation may cost trillions

A new study by @felixschaumann and @Edu_Alastrue in @PNASNews reveals that a weakening Atlantic Meridional Overturning Circulation (AMOC) could lead to social costs of several trillion euros by 2100. Less CO2 absorption means more climate change impacts. 🧪 Link to study: https://www.pnas.org/doi/10.1073/pnas.2419543122 #CLICCS @MPI_Meteo

How does #deforestation impact #Amazon rainfall?🌧️
Surprisingly, the total amount of precipitation could remain the same, a new study by Arim Yoon and Cathy Hohenegger, both #CLICCS researchers at the MPI-M, suggests.
However, rainfall patterns will change. Deforestation may lead to fewer but more intense rain events, which could have significant impacts on the regional climate.

📺 Watch our visualization by Dr. Felicia Brisc ▶️ https://www.youtube.com/watch?v=yYsf1jK2Nrc

@MPI_Meteo @aeonvis

🫘 Cowpeas: Namibia's key to food security? Our PhD candidate Jihye Jeong's (et al.) research shows that inoculated cowpeas boost drought resistance and could meet the protein needs of Namibia using just 10% of current resources. 🧪 Read more: https://www.sciencedirect.com/science/article/pii/S2211464525000053?via%3Dihub #foodsecurity #agriculture #africa #CLICCS

🌡️ Im Jahr 2024 haben wir die 1,5-Grad-Marke das erste Mal überschritten – zu diesem nüchternen Schluss kommt der Klimawandeldienst des EU-Programms @CopernicusEU in seinem Bericht. Die Sprecherin des Exzellenzclusters für Klimaforschung der Universität Hamburg Johanna Baehr findet dazu deutliche Worte. Unter anderem hat @tonline darüber berichtet: https://www.t-online.de/nachrichten/panorama/id_100570310/report-erderwaermung-lag-2024-im-schnitt-bei-1-6-grad.html

#EUGreenDeal #ClimateAction #CLICCS

🏆 Klimarelevante Dissertationen gesucht! Der Exzellenzcluster „Climate, Climatic Change, and Society“ #CLICCS der Universität Hamburg schreibt den 14. Wladimir Köppen Preis für Klima- und Erdsystemwissenschaften aus.

Noch bis zum 31. Januar könnt ihr herausragende Arbeiten vorschlagen. Es winken 5000 Euro! https://www.cliccs.uni-hamburg.de/de/career/koeppen-award.html

❄️ Permafrost stores twice as much carbon as the atmosphere. Thawing releases methane & CO2, accelerates coastal erosion, and may even shift tropical rainfall. Permafrost shows how regional changes impact the global climate. #CLICCS @MPI_Meteo Read more: https://cliccs.uni-hamburg.de/about-cliccs/n

💸 Burning 1 liter of gasoline = €0.60 in climate damages. New study by the University of Davis and the University of Hamburg finds CO₂ costs society €300/ton – more than double previous estimates. Based on 1,800 studies, it's the most comprehensive analysis to date. #CLICCS 🧪 Link: http://pnas.org/doi/10.1073/...

🌇 Urban climate futures are shaped by storytelling, not just policy. A new study by Franziska S. Hanf from the University of Hamburg et al shows how blending art & science can help to rethink urban water management via narrative images. #CLICCS 🧪 https://www.frontiersin.org/journals/sustainable-cities/articles/10.3389/frsc.2024.1430257/full

🏅@TatianaIlyina, #UHH-professor in the Cluster of Excellence #CLICCS and group leader at #MPIM, has been awarded the prestigious Fridtjof Nansen Medal—one of the most important #honors in #oceanography! 👏 Her groundbreaking work has advanced our understanding of the #ocean carbon cycle 🌊 and its pivotal role in the #climate system. 🌍 She will receive the award at the EGU General Assembly in April 2025. Read more: https://mpimet.mpg.de/en/communication/detail-view-news-homepage?tx_news_pi1%5Baction%5D=detail&tx_news_pi1%5Bcontroller%5D=News&tx_news_pi1%5Bnews%5D=1167&cHash=45b8f137b3dc6106f56c59d1f2ab33f7
#WomenInSTEM
Photo credit: UHH

Interested to go where #science 👩‍🎓& #art 🎨 meet? Check out the "Portraits of Climate" of the Cluster of Excellence #CLICCS, opening *tomorrow* Nov 7 at Universitätsmuseum #Hamburg. #MPIM_scientist David Nielsen contributed to this unique exhibition together w/ artist Jenni Schurr: His research on Arctic #permafrost erosion can be experienced as an audiovisual installation. This & other fantastic artwork is presented until April 2025!
➡️ https://www.cliccs.uni-hamburg.de/de/press/dialogue/art-science.html
Image credit: Jenni Schurr

Ein Forschungsteam am Exzellenzcluster Climate, Climatic Change, and Society (CLICCS) der Universität Hamburg hat ein PNAS, ein englischsprachiges Paper veröffentlicht, das die Gesundheitsvorteile vom europäischen Emissionshandelssystem quantifiziert. Dabei geht es vor allem um die Reduktion gefährlicher Luftschadstoffe, nicht nur um CO2. #CLICCS
#gesundheit
https://www.pnas.org/doi/10.1073/pnas.2319908121

My expert hour at #egu24 at 12-13:00 today at the #DKRZ booth.
Happy to talk about the global carbon cycle and the #ocean #carbonsinks and how we model all this with our #EarthSystemModels.
#CLICCS

"Weltweit betreiben vor allem Einzelpersonen und Haushalte Anpassung an die Folgen des Klimawandels. Eine systematische Vernetzung verschiedener Akteursgruppen fehlt.

Das zeigt ein internationales Team um den Exzellenzcluster für #Klimaforschung #CLICCS an der Universität Hamburg und an der Ludwig-Maximilians-Universität München.

Die Metastudie wurde jetzt im Fachmagazin 'Nature Climate Change' veröffentlicht."

https://www.nature.com/articles/s41558-023-01824-z #Klimakrise #Anpassung

Is climate activism like the German “Last Generation” harming the climate movement?

There is no direct evidence for this.

"The accusation is an example of successful framing: It diverts the public’s attention from the fact that national and international climate policies alike are still insufficient." -
says political scientist Dr. Jan Wilkens from Universität Hamburg

Read more in the interview: https://www.cliccs.uni-hamburg.de/about-cliccs/news/2023-news/2023-07-11-klimaproteste.html

#cliccs #ClimateActivism #climatechange

Wow 🥳 !

The excellence cluster Climate, Climatic Change and Society #CLICCS at @cenunihh awards the Wladimir Köppen award to *two* @awi / @unibremen PhD students.

Amazing work on #phytoplankton and #seaice !

Congrats @mseifert and @luisavonalbedyll

#proud #happysupervisor #phd @womeninstem @womeninSTEM

read more: https://www.cliccs.uni-hamburg.de/about-cliccs/news/2023-news/2023-07-12-koeppen.html