Identification info

Metadata Language

English (en)

Character set

utf8

Dataset Reference Date ()

2015-05-22

Dataset Reference Date ()

2015-05-14

Identifier

CEH:EIDC: / 1431704829276

Identifier

https://catalogue.ceh.ac.uk/id/5e1792a0-ae95-4e77-bccd-2fb456112cc1

Identifier

doi: / 10.5285/5e1792a0-ae95-4e77-bccd-2fb456112cc1

Other citation details

Tanguy, M., Kral., F., Fry, M., Svensson, C., Hannaford, J. (2015). Standardised Precipitation Index time series for Integrated Hydrological Units Hydrometric Areas (1961-2012). NERC Environmental Information Data Centre 10.5285/5e1792a0-ae95-4e77-bccd-2fb456112cc1

Maintenance and update frequency

notPlanned

GEMET - Concepts, version 4.1.3

• drought

Keywords

• Hydrology
• Integrated Hydrological Units
• IHU
• SPI
• indicator
• rainfall extremes

Limitations on Public Access

otherRestrictions

Other constraints

Registration is required to access this data

Use constraints

otherRestrictions

Other constraints

Licence terms and conditions apply

Use constraints

otherRestrictions

Other constraints

If you reuse this data, you should cite: Tanguy, M., Kral., F., Fry, M., Svensson, C., Hannaford, J. (2015). Standardised Precipitation Index time series for Integrated Hydrological Units Hydrometric Areas (1961-2012). NERC Environmental Information Data Centre https://doi.org/10.5285/5e1792a0-ae95-4e77-bccd-2fb456112cc1

Spatial representation type

textTable

Topic category

• Climatology, meteorology, atmosphere

N

S

E

W

Begin date

1961-01-01

End date

2012-12-31

Code

OSGB 1936 / British National Grid

Distribution Information

Data format

• Comma-separated values (CSV) ()

Quality Scope

dataset

Other

dataset

Statement

SPI is calculated as originally defined in McKee et al. [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 Stagge et al. [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 Tanguy et al. [3]). To calculate SPI, the R package SCI was used (Gudmundsson & Stagge [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] (Tanguy et al. [5], Keller et al. [6]) which has been area-averaged over each of the Integrated Hydrological Units (IHU) Hydrometric Areas (Kral et al. [7]). [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. [7] Kral, F., Fry, M., Dixon, H. (2015). Integrated Hydrological Units of the United Kingdom: Hydrometric Areas without Coastline. NERC-Environmental Information Data Centre doi:10.5285/3a4e94fc-4c68-47eb-a217-adee2a6b02b3

Metadata

File identifier

5e1792a0-ae95-4e77-bccd-2fb456112cc1 XML

Metadata Language

English (en)

Character set

ISO/IEC 8859-1 (also known as Latin 1)

Resource type

dataset

Hierarchy level name

dataset

Metadata Date

2023-11-15T12:16:24

Metadata standard name

UK GEMINI

Metadata standard version

2.3