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Iceland represents an area of ......... pressure.

An area of high pressure in the NAO is known as the ............. high.

The name of the weather feature created by the difference in pressure across stratospheric layers, which keeps cold Arctic air in the Arctic.

The abbreviation for the event which involves the jet stream changing direction every 14 months.

The polar vortex is enhanced when the quasibiennial oscillation is in its ............. phase.

Weak westerly winds can be as a result of a ........... PV.