An extremely large ‘Azores High’ has resulted in abnormally dry conditions across the western Mediterranean, including the Iberian Peninsula, primarily occupied by Spain and Portugal.
- An annual drying of 5-10 millimetres per year per decade has been recorded in the Iberian Peninsula throughout the second half of the 20th century.
What is Azores High?
- Azores High is a subtropical high pressure system that extends over the eastern subtropical North Atlantic and western Europe during winter.
- It is associated with anticyclonic winds in the subtropical North Atlantic.
- It is formed by dry air aloft descending the subtropics and coincides with the downward branch of the Hadley Circulation.
- Movement of the system poleward in summer has a major impact upon the climate of Europe.
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