Interestingly, the negative NAO regime appears to be associated with anomalously weak lower stratospheric (150 hPa) westerly winds, rather than with a classical sudden stratospheric warming response at the 10 hPa level.

🔌💡 IBERIAN BLACKOUT Since April 28th, some commentators have scrambled to present dubious explanations (inertia, ties with 🇫🇷, etc); after last week's gov & TSO reports, specific conclusions can be drawn and unknown aspects highlighted Full essay below ⬇️ #EnergySky open.substack.com/pub/postnorm...