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Gridded rainfall depth-duration-frequency (DDF) estimates for the state of Kerala, India, 1979-2020

This data represents twenty-four modelled rainfall depth estimates by GridASCII files across the state of Kerala, India, for four durations (1, 6, 24 and 192 hours) and six return periods (2, 5, 10, 25, 50 and 100 years). The estimates were produced using a similar procedure to the Flood Estimation Handbook statistical method for flood frequency estimation: separately for each duration, the estimated median annual maximum (AMAX) rainfall was used as a standardizing “index” value and the estimated L-moments of the AMAX series were used to fit a generalized logistic distribution “growth curve”. The data are in units of mm at a spatial resolution of 0.12 degrees. Full details about this dataset can be found at https://doi.org/10.5285/4a08e6f1-e508-4bb6-b571-b3145dd1588e

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Date (Publication)
2022-11-22
Identifier
https://catalogue.ceh.ac.uk/id/4a08e6f1-e508-4bb6-b571-b3145dd1588e
Identifier
doi: / 10.5285/4a08e6f1-e508-4bb6-b571-b3145dd1588e
Other citation details
Vesuviano, G., Griffin, A., Stewart, E., Cole, S. (2022). Gridded rainfall depth-duration-frequency (DDF) estimates for the state of Kerala, India, 1979-2020. NERC EDS Environmental Information Data Centre 10.5285/4a08e6f1-e508-4bb6-b571-b3145dd1588e
Author
  UK Centre for Ecology & Hydrology - Vesuviano, G.
https://orcid.org/0000-0003-2157-8875
Author
  UK Centre for Ecology & Hydrology - Griffin, A.
https://orcid.org/0000-0001-8645-4561
Author
  UK Centre for Ecology & Hydrology - Stewart, E.
https://orcid.org/0000-0003-4246-6645
Author
  UK Centre for Ecology & Hydrology - Cole, S.
https://orcid.org/0000-0003-4294-8687
Custodian
  NERC EDS Environmental Information Data Centre
Point of contact
  UK Centre for Ecology & Hydrology - Vesuviano, G.
Publisher
  NERC EDS Environmental Information Data Centre
Owner
  UK Centre for Ecology & Hydrology
Access constraints
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otherRestrictions Other restrictions
Other constraints
This resource is available under the terms of the Open Government Licence
Use constraints
otherRestrictions Other restrictions
Other constraints
If you reuse this data, you should cite: Vesuviano, G., Griffin, A., Stewart, E., Cole, S. (2022). Gridded rainfall depth-duration-frequency (DDF) estimates for the state of Kerala, India, 1979-2020. NERC EDS Environmental Information Data Centre https://doi.org/10.5285/4a08e6f1-e508-4bb6-b571-b3145dd1588e
Spatial representation type
grid Grid
Metadata language
EnglishEnglish
Character set
utf8 UTF8
Topic category
  • Climatology, meteorology, atmosphere
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Unique resource identifier
WGS 84
Distribution format
  • ASCII grid ()

Distributor
  NERC EDS Environmental Information Data Centre
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dataset Dataset
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Conformance result

Date (Publication)
2010-12-08
Statement
1, 6, 24 and 192-hour annual maximum rainfalls were extracted from the gridded Indian Monsoon Data Assimilation and Analysis (IMDAA) hourly rainfall dataset for each year of 1979-2020 inclusive, for each grid cell in the state of Kerala, India. At each point, the median, and L-moments of the 42 annual maxima were calculated separately for each duration. At each location, linear regressions were created for the median using longitude, latitude, duration and mean annual rainfall. Linear regressions were created for the first two L-moments using these descriptors variables plus altitude and modelled median of annual maxima. The generalized logistic distribution was then used with the modelled median and L-moment ratios at each site to estimate the rainfall depths associated with specified durations and return periods.
File identifier
4a08e6f1-e508-4bb6-b571-b3145dd1588e 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
2025-03-21T09:34:45
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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