Standardised Precipitation Evapotranspiration Index time series for Integrated Hydrological Units Hydrometric Areas (1961-2012)

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Environmental Information Data Centre
Last updated:
29 June 2024
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Summary

Standardised Precipitation Evapotranspiration Index (SPEI) data for Integrated Hydrological Units (IHU) Hydrometric Areas (Kral et al. [1]). SPEI is a drought index based on the probability of occurrence of the Climatic Water Balance (CWB) - which is equivalent to the amount of precipitation minus the amount of evapotranspiration - for a given accumulation period as defined by Vicente-Serrano et al. [2]. SPEI is calculated for different accumulation periods: 1, 3, 6, 12, 18, 24 months. Each of these is in turn calculated for each of the twelve calendar months. Note that values in monthly (and for longer accumulation periods also annual) time series of the data therefore are likely to be autocorrelated. The standard period which was used to fit the gamma distribution is 1961-2010. The dataset covers the period from 1961 to 2012. [1] Kral, F., Fry, M., Dixon, H. (2015). Integrated Hydrological Units of the United Kingdom: Hydrometric Areas without Coastline. NERC-Environmental Information Data Centre https://doi.org/10.5285/3a4e94fc-4c68-47eb-a217-adee2a6b02b3 [2] Vicente-Serrano, S. M., Beguería, S., & López-Moreno, J. I. (2010) A Multiscalar Drought Index Sensitive to Global Warming: The Standardized Precipitation Evapotranspiration Index. J. Climate, 23, 1696-1718. https://doi.org/10.1175/2009JCLI2909.1 Full details about this dataset can be found at https://doi.org/10.5285/19c230b2-415b-456a-9e93-7b00b730a465

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Added to data.gov.uk
2024-02-27
Access contraints
If you reuse this data, you should cite: Tanguy, M., Kral, F., Fry, M., Svensson, C., Hannaford, J. (2015). Standardised Precipitation Evapotranspiration Index time series for Integrated Hydrological Units Hydrometric Areas (1961-2012). NERC Environmental Information Data Centre https://doi.org/10.5285/19c230b2-415b-456a-9e93-7b00b730a465
Harvest GUID
19c230b2-415b-456a-9e93-7b00b730a465
Extent
Latitude: 61.026° to °
Longitude: -7.557° to 3.554°
Spatial reference system
Dataset reference date
2015-09-30 (publication)
2015-09-30 (creation)
Frequency of update
notPlanned
Responsible party
(pointOfContact, author, publisher); NERC EDS Environmental Information Data Centre (custodian)
ISO 19139 resource type
dataset
Metadata language
eng
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