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Gridded Standardized Precipitation Index (SPI) using gamma distribution with standard period 1961-2010 for Great Britain [SPIgamma61-10]

1km and 5km gridded Standardised Precipitation Index (SPI) data for Great Britain, which is a drought index based on the probability of precipitation for a given accumulation period as defined by McKee et al. (1993). 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 dataset covers the period from 1961 to 2012. Full details about this dataset can be found at https://doi.org/10.5285/94c9eaa3-a178-4de4-8905-dbfab03b69a0

Simple

Date (Publication)
2015-04-30
Identifier
CEH:EIDC: / 1428490171842
Identifier
https://catalogue.ceh.ac.uk/id/94c9eaa3-a178-4de4-8905-dbfab03b69a0
Identifier
doi: / 10.5285/94c9eaa3-a178-4de4-8905-dbfab03b69a0
Other citation details
Tanguy, M., Hannaford, J., Barker, L., Svensson, C., Kral, F., Fry, M. (2015). Gridded Standardized Precipitation Index (SPI) using gamma distribution with standard period 1961-2010 for Great Britain [SPIgamma61-10]. NERC Environmental Information Data Centre 10.5285/94c9eaa3-a178-4de4-8905-dbfab03b69a0
Point of contact
  UK Centre for Ecology & Hydrology - Tanguy, M.
Author
  Centre for Ecology & Hydrology - Tanguy, M.
Author
  Centre for Ecology & Hydrology - Hannaford, J.
Author
  Centre for Ecology & Hydrology - Barker, L.
Author
  Centre for Ecology & Hydrology - Svensson, C.
https://orcid.org/0000-0001-9294-5826
Author
  Centre for Ecology & Hydrology - Kral, F.
Author
  Centre for Ecology & Hydrology - Fry, M.
https://orcid.org/0000-0003-1142-4039
Publisher
  NERC Environmental Information Data Centre
Custodian
  NERC EDS Environmental Information Data Centre
Maintenance and update frequency
notPlanned Not planned
GEMET - INSPIRE themes, version 1.0
  • Meteorological geographical features
Access constraints
otherRestrictions Other restrictions
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Registration is required to access this data
Use constraints
otherRestrictions Other restrictions
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License terms and conditions apply
Use constraints
otherRestrictions Other restrictions
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If you reuse this data, you should cite: Tanguy, M., Hannaford, J., Barker, L., Svensson, C., Kral, F., Fry, M. (2015). Gridded Standardized Precipitation Index (SPI) using gamma distribution with standard period 1961-2010 for Great Britain [SPIgamma61-10]. NERC Environmental Information Data Centre https://doi.org/10.5285/94c9eaa3-a178-4de4-8905-dbfab03b69a0
Spatial representation type
grid Grid
Distance
1000  urn:ogc:def:uom:EPSG::9001
Distance
5000  urn:ogc:def:uom:EPSG::9001
Metadata language
EnglishEnglish
Character set
utf8 UTF8
Topic category
  • Climatology, meteorology, atmosphere
Begin date
1961-01-01
End date
2012-12-31
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Unique resource identifier
OSGB 1936 / British National Grid
Distribution format
  • netCDF ( 4 )

Distributor
  NERC EDS Environmental Information Data Centre
OnLine resource
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Supporting information

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

Hierarchy level
dataset Dataset
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dataset

Conformance result

Date (Publication)
2010-12-08
Statement
SPI is calculated as originally defined in [1]. SPI is based on the cumulative probability of a given rainfall amount occurring at a location. The historic rainfall data of the station is fitted to a statistical distribution. For this dataset, the statistical distribution used is the gamma distribution, which has been extensively used and is recommended as a default choice for Europe by [2]. The L-moments method was used to estimate the gamma distribution parameters, as the maximum likehood method was failing to fit a realistic distribution in some isolated cases (more details on the choice of methodology in [3]). To calculate SPI, the R package SCI was used [4], but modified to use L-moments (instead of Maximum Likelihood). The input data used is the monthly rainfall grids from CEH-Gridded Estimates of Areal Rainfall [CEH-GEAR] ([5], [6]) [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. [2] Stagge, J. H., Tallaksen, L. M., Gudmundsson, L., Van Loon, A. F. and Stahl, K. (2015), Candidate Distributions for Climatological Drought Indices (SPI and SPEI). Int. J. Climatol. doi: 10.1002/joc.4267 [3] Tanguy et al. (2015), in preparation. [4] Gudmundsson, L. & Stagge, J. H. (2014). Package 'SCI': Standardized Climate Indices such as SPI, SRI or SPEI. Repository CRAN, http://cran.r-project.org/web/packages/SCI/SCI.pdf [5] Tanguy, M., Dixon, H., Prosdocimi, I., Morris, D. G., Keller, V. D. J. (2014). Gridded estimates of daily and monthly areal rainfall for the United Kingdom (1890-2012) [CEH-GEAR]. NERC-Environmental Information Data Centre doi:10.5285/5dc179dc-f692-49ba-9326-a6893a503f6e [6] Keller,V. D. J., Tanguy, M. , Prosdocimi, I. , Terry, J. A. , Hitt, O., Cole, S. J. , Fry, M., Morris, D. G., Dixon, H. (2015) CEH-GEAR: 1km resolution daily and monthly areal rainfall estimates for the UK for hydrological use. Earth Syst. Sci. Data Discuss., 8, 83-112, www.earth-syst-sci-data-discuss.net/8/83/2015/ doi:10.5194/essdd-8-83-2015.
File identifier
94c9eaa3-a178-4de4-8905-dbfab03b69a0 XML
Metadata language
EnglishEnglish
Character set
ISO/IEC 8859-1 (also known as Latin 1) 8859 Part 1
Hierarchy level
dataset Dataset
Hierarchy level name
dataset
Date stamp
2025-06-03T07:43:43
Metadata standard name
UK GEMINI
Metadata standard version
2.3
Point of contact
  NERC EDS Environmental Information Data Centre
Lancaster Environment Centre, Library Avenue, Bailrigg , Lancaster , LA1 4AP , UK
https://eidc.ac.uk/
 
 

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Keywords

GEMET - INSPIRE themes, version 1.0
Meteorological geographical features

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