MPI für Meteorologie5d ago
🌊🪦 During a dramatic climate change more than 10,000 years ago, most bottom-dwelling organisms in the eastern Mediterranean Sea died, as evidenced by sapropel layers in sediment cores. Using climate simulations covering the past 21,000 years, #MPI_scientist Katharina Six et al. were able to provide a physically + biogeochemically consistent explanation for the origin, course, and end of this 4,000-year-long period for the first time. 
👉https://doi.org/10.1038/s43247-026-03290-9
#ClimateScience
©️Gerhard Schmiedl
MPI für MeteorologieMar 20
⛈️ Weather appears chaotic+random, leading scientists to describe the #Climate w/ statistical quantities such as variances or spectra. While these reflect the random behavior of climate variables, they are nevertheless well-defined as long as the external drivers of the climate system remain constant. In a new study, #MPI_scientist Jin-Song von Storch reveals the constitutive principle underlying such #ClimateStatistics–the Integral Fluctuation-Dissipation Relation IFDR. 📖https://doi.org/10.1016/j.physa.2025.131218
MPI für MeteorologieJan 16
How will sea‑level rise affect global economy? 🌊📈 #MPI_scientist Lennart Ramme et al. have developed a new process‑based model, FRISIA, that treats the coastal zones' response to SLR as a dynamic system with socioeconomic feedbacks. Coupled with the integrated assessment model FRIDA, it shows that a 0.8 m rise by 2100 could cut global GDP by 1.5–6.2% without & 0.5–3.2% with adaptation measures. FRISIA is #OpenSource and can be linked to other IAMs.💡
📝https://doi.org/10.5194/gmd-18-10017-2025
📸©W.Mobilo/AdobeStock
MPI für MeteorologieNov 5

Is tropical rain belt variability driven by self-organization of #clouds? ⛅️

We're proud to welcome Dr. Tomoro Yanase at #MPIM to investigate this question, together with #MPI_Scientist Cathy Hohenegger. 🌅

They aim to use both idealized & realistic simulations, & #ORCESTRA observations to understand how variations in SST patterns may cause variability in cloudiness across the #ITCZ 🌧️🌊🌍

Dr. Yanase’s #ResearchStay is supported by the @HumboldtStiftung & will last for 1 year from Oct 2025 🙌

MPI für MeteorologieOct 8

☔ Regnet es immer irgendwo auf der Welt?

Diese Frage, gestellt von der fünf Jahre alten Pauline, hat #MPI_Scientist Julia Windmiller für die Zeitung wochentaz beantwortet. Sie sagt: „Seit die Erde so aussieht, wie wir sie heute kennen, ist es wohl noch nie vorgekommen, dass es zu irgendeinem Zeitpunkt nirgendwo geregnet hat. Vollkommen sicher sein können wir uns da nicht, aber es ist sehr, sehr wahrscheinlich.“ Lest die ganze Antwort hier: https://taz.de/Kinder-fragen-die-taz-antwortet/!6114895/
#Kinderfragen #ScienceforKids

MPI für MeteorologieOct 2
Looking for something cool to do in #Hamburg on the upcoming long weekend? ⚓️ How about visiting the "Breaking the Surface" exhibition at the International Maritime Museum? The #MPIM Social Media team recently went & was inspired by these women, many of whom we know personally (e.g. #MPI_scientist Jin-Song von Storch & Johanna Baehr, deputy head of #IMPRS_ESM). Make sure to visit before the end of the year or check out the website: www.breaking-the-surface.com
#WomenInSTEM @cenunihh
MPI für MeteorologieSep 23, 2025
🛰️ #WIVERN has officially been selected for ESA’s 11th #EarthExplorer Mission! It's scheduled to launch in the early 2030s!🌪️WIVERN will provide the first-ever global measurements of winds within #clouds. It was proposed by scientists f. Polytechnic University of Turin& University of Reading. #MPI_scientist Cathy Hohenegger is a member of the scientific Mission Advisory Group & will continue to contribute her expertise to developing the scientific plan for the mission. https://mpimet.mpg.de/en/communication/detail-view-news-homepage/wivern-is-esas-11th-earth-explorer-satellite-mission
©ESA
MPI für MeteorologieSep 15, 2025
🌎How Does a Planet's Rotation Rate Affect Its Climate? By simulating an aquaplanet &varying its rotation rate, #MPI_Scientist Abisha Gnanaraj et al. found that a slower rotation than Earth's leads to a colder+drier climate, while a faster rotation results in a warmer+moister climate. The changes arise from alterations in atmospheric circulation aimed at conserving angular momentum which impact humidity💦, cloud cover☁️, & radiant energy fluxes ↑↓.
📗https:/doi.org/10.5194/wcd-6-489-2025
🖼️A.Gnanaraj
MPI für MeteorologieSep 11, 2025
🌊💨 The #ocean shapes the atmosphere in surprising ways!
A new study by #MPI_scientist Putrasahan & von Storch shows the Vertical Mixing Mechanism(VMM), where sea surface temperature gradients drive wind changes, is not only active on ~100 km scales, but can span up to 1,000 km 🌍.
Even more surprising: VMM works not just monthly, but also daily & hourly ⏱️.
This multi-scale process is key for improving #climate &weather models.
📄 https://doi.org/10.1029/2025GL114856
🖼️ CC BY-NC 4.0 Putrasahan & von Storch 2025.
MPI für MeteorologieAug 28, 2025

☁️ Do changes in cloud altitude impact climate sensitivity?

A new study led by #MPI_scientist Lukas Kluft using an idealized radiative transfer model shows:
Positive radiative effects from unchanged high cloud temperatures cancel each other out with a reduction of the greenhouse effect of added CO₂.
📌 Therefore climate sensitivity stays nearly the same as without radiative effects of high cloud altitude – around 2.2°C per CO₂ doubling.

📖 Read the full story now at: https://doi.org/10.5194/acp-25-9075-2025