QUallo that opens will be a fine -edit of torrid heat, in which The air will warm up -the meteorologists say -, at the rhythm of 1 ° C per day. The peak will be on Sunday 15 June: 36 ° C will warn each other with everywhere tips of 40 ° in the South and 42 ° in Sardinia. Those who seek refreshment by the sea will not find it. By Sunday The Mediterranean temperature will in fact rise by 2-3 degrees.
Torrid heat, the weekend forecasts
Already today “the temperature of the water in the sector between Sardinia and the Balearics exceeds 4 ° C the climatological value»Explains Lorenzo Ceati, meteorologist of Ilmeteo.it. The phenomenon is called Marine Heatwave (MHW), a wave of marine heat consequence of climate change. «This anomalous heat will cause a further reinforcement of the boiling phase scheduled until Sunday 15 June. And then it could be the cause of Strong thunderstorms or storms Between Tyrrhenian and Western Mediterranean Sea. Phenomena in particular not excluded next week ».
It is not the first wave of marine heat of the year: already around May 20, around the British Isles, the Azores’ anticyclone warmed the sea significantly. Then he touched the sea of Alboran and, in general, to the whole western Mediterranean. And now that the African anticyclone is also arvorning a large part of Italy, the temperatures of the waters have also increased.
The Ligurian Sea 5 ° beyond the average of June
The sea temperatures will reach about 27 ° C on the Ligurian Sea (5th beyond the average) and 26-28 ° C on Upper Adriatic and on the lower Tyrrhenian Sea. At this step, we risk exceed the record of the last few years and reach 31 ° C In our Italian seas: values from Caribbean areas.
According to Bernardo Gozzini, director of the Lamma-Cnr consortium, the Mediterranean temperature in this period should be 19-20 degrees, and not 23-24 as it is currently. “They are typical temperatures of August. And heating does not only concern the surface part of the pelvis, but Even the deepest waters. Even the remission of the water, caused by the winds and the wave motorcycle in the spring, was not sufficient for cooling because the water warmed up to all depths “.
From too hot sea to thunderstorms
«From a thermal point of view the Mediterranean It is becoming a “tropical sea”»Explains Mattia Gussoni, meteorologist of Ilmeteo.it. And among the consequences there are the extreme climatic events.
«In the presence of atmospheric instability, The thunderstorms that form on the sea surface draw energy from latent heat it provided by it, which is all the greater the more the temperature is high. A continuous diet of energy and humidity therefore. A bit like we have already seen in the Recent floods who have affected Liguria, Tuscany, Emilia Romagna and Sicily in recent years “.
Tropicalization of the Mediterranean, what it means and what it entails
The Mediterranean is a special sea (it is considered a hotspot of the climate change): He warms 20% faster than the global average, becoming more and more salty. But the increase in the temperatures of the waters does not disturb only – possibly – the bathers, reducing the refreshment of the bathrooms. Above all it makes The waters increasingly suitable for species spread in the climate zones closest to the tropics. From the vermocan to the triglia of the Red Sea reported in March in Lampedusa. (Here the Ispra booklet on alien species in our seas).
I am alien species, sometimes invasive, that arrive In our seas through the Suez canal or which are introduced by chance, through the water of the ships and hulls from scoli and infiltrations. But then they are at ease too: so They manage to survive, putting biodiversity in the Mediterranean to recover.
But there are also other phenomena, which impact on man. Like the saline intrusion: caused by the rising of sea level and by the decrease in river contributions, can cOntaminate the coastal aquifersthus compromising the availability of fresh water for human and agricultural use.
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