Studiare i cambiamenti climatici attraverso i diari del capitano Cook

10 2003

Studiare i cambiamenti climatici attraverso i diari del capitano Cook

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I dati sulle condizioni atmosferiche riportati nei diari di bordo del capitano James Cook potrebbero aiutare i climatologi a capire meglio gli impatti del riscaldamento globale.

Secondo Dennis Wheeler, un ricercatore dell’Università inglese del Sunderland, i diari dell’esploratore britannico del Settecento, così come quelli degli altri esploratori inglesi e di quelli spagnoli, olandesi, francesi, sono una fonte di dati climatici e meteorologi storici mai sfruttati finora. Questo grazie all’abitudine dei comandanti di marina di tenere aggiornati i diari con i venti, le maree e le principali condizioni atmosferiche.

Secondo gli esperti, una ricerca di questo tipo consentirebbe di allungare le serie storiche climatiche di almeno un centinaio di anni. Fino a oggi infatti la lunghezza massima è di circa 150 anni, dato che solo alla metà dell’Ottocento iniziò la raccolta sistematica di dati sulla meteorologia.

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