# --------------------------------------------
# CITATION file created with {cffr} R package
# See also: https://docs.ropensci.org/cffr/
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cff-version: 1.2.0
message: 'To cite package "climatekit" in publications use:'
type: software
license: MIT
title: 'climatekit: Unified Climate Indices for Temperature, Precipitation, and Drought'
version: 0.2.0
identifiers:
- type: doi
  value: 10.32614/CRAN.package.climatekit
abstract: 'Compute the standard suite of climate indices from daily weather observations.
  Provides the canonical ''ETCCDI'' 27 (Expert Team on Climate Change Detection and
  Indices), the ''ET-SCI'' heatwave and cold-wave families plus the Excess Heat Factor
  of Nairn and Fawcett (2013), and agroclimatic, drought, and human-comfort families.
  Drought indices (''SPI'', ''SPEI'') accept a choice of distribution (gamma or Pearson
  III for SPI; log-logistic or generalised extreme value for SPEI). Reference evapotranspiration
  is available via Hargreaves and the FAO-56 Penman-Monteith method (Allen et al.
  1998). Percentile-based indices support the Zhang (2005) in-base bootstrap. Daily
  inputs are numeric vectors plus a ''Date'' vector; outputs are tidy data frames.
  Optional gridded support via ''terra'' applies any index over a ''SpatRaster'' and
  reads ''netCDF'' input. No external API calls; pairs with data packages such as
  ''readnoaa''. References: Alexander et al. (2006) <https://doi.org/10.1029/2005JD006290>;
  Zhang et al. (2011) <https://doi.org/10.1002/wcc.147>; Zhang et al. (2005) <https://doi.org/10.1175/JCLI3366.1>.'
authors:
- family-names: Coverdale
  given-names: Charles
  email: charlesfcoverdale@gmail.com
preferred-citation:
  type: manual
  title: 'climatekit: Unified Climate Indices for Temperature, Precipitation, and
    Drought'
  authors:
  - family-names: Coverdale
    given-names: Charles
    email: charlesfcoverdale@gmail.com
  year: '2026'
  notes: R package version 0.2.0
  url: https://CRAN.R-project.org/package=climatekit
repository: https://charlescoverdale.r-universe.dev
repository-code: https://github.com/charlescoverdale/climatekit
commit: ca994aa0de2dff77b2b78dcc6fbff52c8693826b
url: https://charlescoverdale.github.io/climatekit/
date-released: '2026-05-30'
contact:
- family-names: Coverdale
  given-names: Charles
  email: charlesfcoverdale@gmail.com
references:
- type: article
  title: Global Observed Changes in Daily Climate Extremes of Temperature and Precipitation
  authors:
  - family-names: Alexander
    given-names: Lisa V.
  - family-names: Zhang
    given-names: Xuebin
  - family-names: Peterson
    given-names: Thomas C.
  journal: 'Journal of Geophysical Research: Atmospheres'
  year: '2006'
  volume: '111'
  issue: D5
  doi: 10.1029/2005JD006290
- type: article
  title: Indices for Monitoring Changes in Extremes Based on Daily Temperature and
    Precipitation Data
  authors:
  - family-names: Zhang
    given-names: Xuebin
  - family-names: Alexander
    given-names: Lisa
  - family-names: Hegerl
    given-names: Gabriele C.
  - family-names: Jones
    given-names: Philip
  - family-names: Klein Tank
    given-names: Albert
  - family-names: Peterson
    given-names: Thomas C.
  - family-names: Trewin
    given-names: Blair
  - family-names: Zwiers
    given-names: Francis W.
  journal: 'Wiley Interdisciplinary Reviews: Climate Change'
  year: '2011'
  volume: '2'
  issue: '6'
  doi: 10.1002/wcc.147
  start: '851'
  end: '870'