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Analisi testuale dei bollettini meteo a supporto della classificazione dei tipi di circolazione

Authors: Grasso, Valentina; Crisci, Alfonso; Betti, Giulio; Gozzini, Bernardo; Messeri, Gianni; Vallorani, Roberto; Zabini, Federica;

Analisi testuale dei bollettini meteo a supporto della classificazione dei tipi di circolazione

Abstract

L’obiettivo di questo lavoro è quello di esplorare nuovi strumenti di indagine nel campo del trattamento dell’informazione meteo-climatica, partendo da diverse tipologie di dati come quelli di natura testuale. Il Consorzio LaMMA (Regione Toscana-CNR), servizio meteorologico della Regione Toscana, ha elaborato due classificazioni in tipi di circolazione atmosferica per l’Italia, una ottimizzata per la temperatura [SAN09] e una per la precipitazione [PCT09]. La classificazione qui esaminata è la PCT09, che è stata realizzata applicando il metodo di analisi delle componenti principali ai dati di pressione media a livello del mare (Reanalysis 2 NCEP/NCAR 1981-2010) [1]. In questa analisi sono state analizzate le informazioni relative alla precipitazione, mettendo in relazione i 9 tipi di circolazione con le frequenze dei termini appartenenti al dominio semantico della precipitazione, contenuti nel bollettini meteo giornalieri. La disponibilità di poter associare un inventario giornaliero del pattern di circolazione dell’atmosfera ed uno storico di prodotti testuali generati dall’attività dei previsori, rappresenta un’opportunità per valutare il grado di coerenza fra prodotti meteo di natura diversa ma orientati verso l’unico scopo di descrivere in modo efficace lo stato del tempo. Questa prima analisi ha mostrato interessanti potenzialità evidenziando bene come tipi di tempo opposti, ciclonici/anticiclonici, diano effettivamente luogo a corpus testuali sensibilmente diversi.

Presentato al 1° congresso nazionale AISAM, Bologna, 10-13 settembre 2018

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Keywords

circulation type, climatology,text mining, CNR

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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