Polar vortex status
Interactive comparison GFS ERA interim (beta)

Zonal mean u-wind 60°N 10hPa EI
EP-flux VCS (beta)

Wave 1 500/100/10/1hPa
Wave 1 300/30hPa
Wave 1 VCS
Wave 2 500/100/10/1hPa
Wave 2 300/30hPa
Wave 2 VCS
Wave series (beta)

10hPa geopot.height temp.
30hPa geopot.height temp.
Zonal mean u-wind 60°N 10hPa GEFS
Zonal mean u-wind 60°N VCS

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