Polar stratosphere and tropopause
ECMWF IFS analyses of the past 14 days and the latest forecast, every 6 hours.
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Analysis
Forecast
Keys: ← → step, Space play/pause, A latest analysis. The address of the page keeps the selected field and time and can be shared.
Data: operational ECMWF IFS (TCo1279, 137 levels) interpolated to 0.25°. PV is shown as Lait-scaled potential vorticity (θ₀ = 420 K).