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Long-Term, Gridded Standardized Precipitation Index for Hawai‘i

Author

Listed:
  • Matthew P. Lucas

    (Department of Geography and Environment, University of Hawai‘i at Mānoa, Honolulu, HI 96822, USA)

  • Clay Trauernicht

    (Department of Natural Resources and Environmental Management, University of Hawai‘i at Mānoa, Honolulu, HI 96822, USA)

  • Abby G. Frazier

    (Department of Geography and Environment, University of Hawai‘i at Mānoa, Honolulu, HI 96822, USA
    East-West Center, Honolulu, HI 96848, USA)

  • Tomoaki Miura

    (Department of Natural Resources and Environmental Management, University of Hawai‘i at Mānoa, Honolulu, HI 96822, USA)

Abstract

Spatially explicit, wall-to-wall rainfall data provide foundational climatic information but alone are inadequate for characterizing meteorological, hydrological, agricultural, or ecological drought. The Standardized Precipitation Index (SPI) is one of the most widely used indicators of drought and defines localized conditions of both drought and excess rainfall based on period-specific (e.g., 1-month, 6-month, 12-month) accumulated precipitation relative to multi-year averages. A 93-year (1920–2012), high-resolution (250 m) gridded dataset of monthly rainfall available for the State of Hawai‘i was used to derive gridded, monthly SPI values for 1-, 3-, 6-, 9-, 12-, 24-, 36-, 48-, and 60-month intervals. Gridded SPI data were validated against independent, station-based calculations of SPI provided by the National Weather Service. The gridded SPI product was also compared with the U.S. Drought Monitor during the overlapping period. This SPI product provides several advantages over currently available drought indices for Hawai‘i in that it has statewide coverage over a long historical period at high spatial resolution to capture fine-scale climatic gradients and monitor changes in local drought severity.

Suggested Citation

  • Matthew P. Lucas & Clay Trauernicht & Abby G. Frazier & Tomoaki Miura, 2020. "Long-Term, Gridded Standardized Precipitation Index for Hawai‘i," Data, MDPI, vol. 5(4), pages 1-9, November.
    • Handle: RePEc:gam:jdataj:v:5:y:2020:i:4:p:109-:d:451392
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    Citations

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    Cited by:

    1. Ryan J. Longman & Abby G. Frazier & Christian P. Giardina & Elliott W. Parsons & Sierra McDaniel, 2022. "The Pacific Drought Knowledge Exchange: A Co-Production Approach to Deliver Climate Resources to User Groups," Sustainability, MDPI, vol. 14(17), pages 1-14, August.
    2. Abby G. Frazier & Christian P. Giardina & Thomas W. Giambelluca & Laura Brewington & Yi-Leng Chen & Pao-Shin Chu & Lucas Berio Fortini & Danielle Hall & David A. Helweg & Victoria W. Keener & Ryan J. , 2022. "A Century of Drought in Hawaiʻi: Geospatial Analysis and Synthesis across Hydrological, Ecological, and Socioeconomic Scales," Sustainability, MDPI, vol. 14(19), pages 1-25, September.

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