Aggregation
Standardised Precipitation Index time series for Integrated Hydrological Units (1961-2012)

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Standardised Precipitation Index (SPI) data for different levels of Integrated Hydrological Units (IHU). SPI is a drought index based on the probability of precipitation for a given accumulation period as defined by McKee et al [1]. SPI 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 datasets cover the period from 1961 to 2012. [1] McKee, T. B., Doesken, N. J., Kleist, J. (1993). The Relationship of Drought Frequency and Duration to Time Scales. Eighth Conference on Applied Climatology, 17-22 January 1993, Anaheim, California.

Publication date: 2015-05-22 ( created 2015-05-14 )

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Format of the aggregate: text/csv

Use of this resource is subject to these restrictions

Licence terms and conditions apply

Where/When

Study area
Temporal extent
1961-01-01    to    2012-12-31

Online Resources

Supporting information
Supporting information available to assist in re-use of this dataset.

IHU Hydrometric Areas
Link to the Integrated Hydrological Units dataset which was used to produce the SPI time series for IHU Hydrometric Areas.

CEH droughts portal
Link to the CEH droughts portal where SPI time series can be visualised and downloaded

Quality

Lineage
Lineage of children datasets explained in their metadata records

Other contacts

Point Of Contact
Centre for Ecology & Hydrology
Originator
Centre for Ecology & Hydrology
Resource Provider
Custodian
Distributor

Spatial

Spatial Reference System
OSGB 1936 / British National Grid

Keywords

Topic Categories
Climatology / Meteorology / Atmosphere
Other keywords
SPI
indicator
Integrated Hydrological Units
accumulation period
drought
rainfall extremes
Other keywords
Water resources (en)
Temporal keywords
monthly

Dataset identifiers

CEH:EIDC:#1434376296994
https://catalogue.ceh.ac.uk/id/eb4faf0f-5cab-44d4-8d8b-912669e7e31f

Metadata

Record identifier
eb4faf0f-5cab-44d4-8d8b-912669e7e31f
Record created by
Centre for Ecology & Hydrology
Maclean Building, Benson Lane, Crowmarsh Gifford
OX10 8BB Wallingford
Oxfordshire
United Kingdom
Record last updated
2016-11-08T17:06:14
Metadata standard
INSPIRE Implementing Rules for Metadata version 1.2