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Scientists at Hamburg Extreme Weather Congress Warn of Escalating Urban Heat

Fresh measurements highlight faster greenhouse‑gas growth alongside record marine and Alpine anomalies in 2025.

Overview

  • Deutscher Wetterdienst board member Tobias Fuchs said cities will face mounting health and infrastructure stress as heatwaves and droughts become more frequent.
  • Organizers reported every decade in Germany has been warmer than the previous one since 1960, with warming rates of about 0.13 °C per decade since 1881 and 0.41 °C per decade since 1971.
  • DWD’s Gudrun Mühlbacher noted a markedly snow‑poor Alpine winter 2024/25 with 10% to 40% fewer snow cover days and temperatures up to 2 °C above normal above 1,000 meters, accelerating glacier melt.
  • BSH chief Helge Heegewaldt reported the North Sea was the warmest on record in spring and summer 2025 and a Baltic marine heatwave near Kiel lasted over 55 days at more than 4 °C above average, alongside a sea‑level rise of over 25 cm at Cuxhaven since 1900 and projections of 0.6–1.1 m by 2100.
  • Separate reporting highlighted the Arctic’s growing strategic significance as ice loss opens access to resources and routes, with increased military activity and warnings from environmental groups and Indigenous representatives.