New invasion of sand from the Sahara desert on Italy. In the next few hours it will reach its peak of maximum expansion, then interacting with a storm disturbance.
But why is this happening so many times in recent years?
The answer must be sought in the particular synoptic configurations that are being repeated more and more frequently over the Mediterranean basin, i.e presence of the vast African anticyclone. In fact, compared to the past when the milder Azores anticyclone dominated the scene, with climate change taking place we increasingly find ourselves having to deal with the sub-tropical high pressure arriving from Africa and, among the consequencesin addition to increasingly extreme heat, we are also witnessing a greater contribution of Saharan dust.
In the next few hours the formation of an insidious and deep cyclone between the Atlantic Ocean and the Iberian Peninsula, will be the basis of a constant recall of warm currents from the southern quadrants straight from the Sahara desert.
This immense atmospheric mechanism will favor the arrival of large quantities of desert dust which will concentrate in suspension at the highest altitudes of the atmosphere, ready to reach our country, after a long journey. According to the latest updates (Skiron, University of Athens), the key days will be Saturday 29th and Sunday 30th June: the arrival of a disturbance (Saturday afternoon/evening) will then favor the settling on the ground of all the dust present in the atmosphere due to precipitation.
Are you going to wash the car? It will be better to postpone, especially where rainfall is expected.
