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Le polveri rilasciate nell'atmosfera dal vasto incendio in Alberta (Canada) del mese scorso sono state misurate anche in Svizzera. Lo ha annunciato venerdì MeteoSvizzera.
Le fiamme hanno generato e immesso in atmosfera una quantità enorme di cenere e altri prodotti di combustione. "La nube prodotta è stata trasportata attraverso l'Atlantico", scrive l'agenzia di previsioni del tempo in una nota, la quale precisa che "nonostante l’importanza dell’evento, le concentrazioni arrivate qui non rappresentano alcun pericolo per la popolazione".
La "strada della fuliggine"
L'aerosol è stato osservato sopra la stazione di misurazione di Payerne il 24 e 25 maggio. Esso modifica non solo le proprietà ottiche dell’atmosfera, ma anche altre variabili atmosferiche quali umidità e temperatura.
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