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Per chi soffre di allergie, la stagione pollinica 2022 rimarrà impressa nella memoria. Il polline di nocciolo ha riempito l'aria sin dalla fine di dicembre 2021 in Ticino e dall'inizio del 2022 a nord delle Alpi. Grazie al bel tempo, il carico di "gametofiti" è stato costantemente elevato fino al fuoco d'artificio finale prodotto dalle graminacee.
Vari record su 30 anni
La precocità e l'abbondanza dei pollini sono state favorite dalle condizioni meteorologiche miti. I granuli di nocciolo hanno fatto registrare nelle stazioni di Lucerna, Münsterlingen (TG) e Buchs (SG) una delle stagioni più intense dei trent'anni del periodo di confronto (1991-2020). Pure l'ontano, fiorito in contemporanea, ha rilasciato pollini a profusione.
La concentrazione dei gametofiti di betulla è stata elevata in totale per 16-29 giorni sull'Altopiano e per 36 giorni in Ticino, ossia tredici, rispettivamente 16 giorni in più rispetto alla media. A Buchs, a Lucerna e in Ticino queste cifre sono tra le più alte del periodo di confronto.
Iniziata la stagione delle allergie
Il Quotidiano 17.02.2022, 20:00
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