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    Long‐term trends in extreme precipitation indices in Ireland

    Ryan, Ciara and Curley, Mary and Walsh, Séamus and Murphy, Conor (2022) Long‐term trends in extreme precipitation indices in Ireland. International Journal of Climatology, 42 (7). pp. 4040-4061. ISSN 0899-8418

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    Knowledge of long-term changes in climate extremes is vital to better understand climate variability and place present day extreme events in historical context. Analysis of trends in extreme precipitation in Ireland have largely been limited to the second half of the 20th century due to lack of data availability in digital format. Using recently digitized data, this study provides the first assessment of long-term changes in extreme daily precipitation observed at 30 locations across Ireland. Quality control of rescued data is carried out before selected long-term stations are tested for homogeneity using the RHtests software. Details of detected breakpoints and the application of adjustments to daily values are discussed. Eleven extreme precipitation indices are calculated on an annual basis and analysed to determine spatial and temporal trends in the frequency, intensity and magnitude of observed precipitation. The persistence of trends for varying record lengths and for two fixed periods (1910–2019 and 1940–2019) of analysis is assessed for all stations and indices. Results show increases in precipitation intensity, especially notable in the east and southeast of the island. Our findings also show that the contribution of heavy and extreme precipitation events to annual totals is increasing, while there was no persistent trends in annual totals or consecutive wet or dry days.

    Item Type: Article
    Additional Information: Cite as: Ryan, C., Curley, M., Walsh, S. & Murphy, C. 2022, "Long‐term trends in extreme precipitation indices in Ireland", International journal of climatology, vol. 42, no. 7, pp. 4040-4061.
    Keywords: data rescue; Ireland; long-term trends; precipitation extremes;
    Academic Unit: Faculty of Social Sciences > Geography
    Faculty of Social Sciences > Research Institutes > Irish Climate Analysis and Research Units, ICARUS
    Item ID: 17775
    Identification Number:
    Depositing User: Conor Murphy
    Date Deposited: 02 Nov 2023 11:58
    Journal or Publication Title: International Journal of Climatology
    Publisher: Wiley on-line
    Refereed: Yes
    Use Licence: This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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