Post

Leon Simons
@leonsimons.com

The Northern Hemisphere mid-latitude heat keeps blowing my mind. The North Atlantic was not as extreme as the past two years, but the other oceans were even more extreme than the North Atlantic summers of both 2023 and 2024!

Zack Labe@zacklabe.com

The massive extreme marine heatwave continues to stretch across the entire northern Pacific Ocean. In fact, the magnitude of the sea surface temperature anomalies even grew in August 2025 compared to earlier in the summer. Yikes... 🫠 Data from OISSTv2.1 (psl.noaa.gov/data/gridded...). 🌊

21 reposts61 likes

Leon Simons
@leonsimons.com

Here's the same region since 1854, using the NOAA ERSST V5 dataset. August 2025 is not available yet here. If the annual summer increase is as high as for @ecmwf.int ERA5 above, the ~0.4°C jump break another y-axis...

tulamide
@tulamide.bsky.social

And in the Gulf of Panama, the important marine upwelling was missing. The base for phytoplacton, which is the base of the maritime food chain. And people still don't get it. We don't head into a catastrophe, we are already in it.