Fritz Vahrenholts Newsletter: Eine Lehre aus dem Terroranschlag
Der Newsletter von Fritz Vahrenholt bietet persönliche Kommentare zu globalen Temperaturveränderungen und energiepolitischen Themen direkt vom Verfasser.
Die globale Temperatur hat sich im Dezember 2025 weiter deutlich verringert. Sie beträgt nur noch um 0,3 Grad Celsius höher als das langjährige Mittel. Das Jahr 2025 war insgesamt deutlich kühler als 2024. Der Abkühlungstrend wird fortgesetzt.
Eine grundsätzliche Lehre aus dem Terroranschlag auf das Berliner Stromnetz

Dr. Fritz Vahrenholt
Die oben genannten Artikel sind dem Rundbrief von Dr. Fritz Vahrenholt vom 7. Januar 2026 entnommen. Hier können Sie sich für diesen Rundbrief anmelden.
more news
AI accurately reconstructs temperatures across Antarctica
Artificial intelligence is increasingly being applied in climate science, with mixed results so far. A new study, however, suggests that deep learning can successfully reconstruct Antarctic surface temperatures despite limited observational data. By combining sparse measurements with reanalysis datasets, the researchers claim to achieve high accuracy—offering new insights into long-term temperature trends across the continent.
Clintel President Václav Klaus warns: “No radical change in Europe in the near future”
We must not be naïve optimists about climate policy and should not overestimate the recent positive signals, like those from President Trump. This is the view of Clintel President Václav Klaus: “Nothing has changed in the European Union. We, with a background in the social sciences, cannot imagine that any radical change will take place in Europe in the near future.” Klaus made these remarks in his speech at the annual meeting of the Norwegian Klimarealistene in Oslo on March 15.
New study finds low CO2-sensitivity again
A new paper by Frank Stefani compares solar variability and CO₂ emissions as drivers of global sea surface temperatures. Using the solar aa geomagnetic index alongside CO₂ data, the study estimates a transient climate response (TCR) of about 1.1–1.4 K, near the lower end of the IPCC range. The results align closely with other observation-based estimates and highlight the continuing scientific debate about the relative roles of solar activity and greenhouse gases in recent climate change.







