Subseasonal models like EC46 are much better at predicting long-lived stratospheric anomalies (e.g. a post #SSW weak vortex) than high-latitude tropospheric patterns. This figure shows skill versus height and lead time: notice the much more durable skill in the stratosphere... pic.twitter.com/rrlvqHvzmY

— World Climate Service (@WorldClimateSvc) February 7, 2023