Cierzo

The cierzo is a strong, dry and usually cold wind that blows from the North or Northwest through the regions of Aragon, La Rioja and Navarra in the Ebro valley in Spain.

It takes place when there is an anticyclone in the Bay of Biscay and a low-pressure area in the Mediterranean Sea.

In the 2nd century BC, Cato the Elder described the cierzo as "a wind that fills your mouth and tumbles waggons and armed men.

[4] It conditions life in the Ebro Valley because it is a drying wind and plants must fight against the dryness that the cierzo produces in the climate.

Likewise, farmers must protect their orchard crops with reed barriers or tree plantations, which are called pareteras de caña, enramadas, abrigaños or bardos.