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Una cartografia dettagliata delle zone più interessate dalla calura a Zurigo è stata creata dagli studiosi del Laboratorio federale svizzero di scienza e tecnologia (EMPA) e del Politecnico ETHZ. In questo modo si potrebbero prevedere, in modo mirato, le future ondate di caldo in città. Le zone urbane sono infatti particolarmente colpite, si creano delle vere e proprie isole di calore caratterizzate da temperature più elevate (di oltre sette gradi) dell'ambiente circostante.
Oltre 400 città nel mondo sono toccate da questo fenomeno, e gli effetti sono più evidenti durante la notte perché le abitazioni immagazzinano il caldo durante la giornata restituendolo la sera.
Isole di calore sotto la lente a Zurigo
RSI Info 21.07.2017, 20:41
Queste ondate di calore, non solo causano malessere generale e notti insonni, ma possono anche avere esiti letali. In Svizzera nell'estate del 2003 e nel 2015 i decessi sono stati rispettivamente 975 e 804 a causa della calura.
ATS/MABO
RG 12.30 del 21.7.2017 Il servizio di Gianluca Olgiati
RSI Info 21.07.2017, 14:43
Contenuto audio
La carta del calore di Zurigo
Telegiornale 21.07.2017, 22:00
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