Man pages for climatekit
Unified Climate Indices for Temperature, Precipitation, and Drought

ck_apply_gridApply a climatekit Index Function Over a SpatRaster
ck_availableList All Available Climate Indices
ck_branasBranas Hydrothermal Index
ck_browseBrowse the climatekit Index Catalogue
ck_catalogueclimatekit Index Catalogue
ck_computeCompute a Climate Index by Name
ck_convert_tempConvert Temperature Units
ck_cooling_degree_daysCooling Degree Days
ck_csdiCold Spell Duration Index (CSDI)
ck_cwaCold-Wave Amplitude (CWA)
ck_cwdCold-Wave Duration (CWD, ET-SCI)
ck_cwfCold-Wave Frequency (CWF)
ck_cwmCold-Wave Magnitude (CWM)
ck_cwnCold-Wave Number (CWN)
ck_diurnal_rangeDiurnal Temperature Range
ck_dry_daysMaximum Consecutive Dry Days
ck_ehfExcess Heat Factor (EHF, Nairn & Fawcett 2013)
ck_etccdi_27Canonical ETCCDI 27 Indices
ck_fire_dangerFire Danger Index (Simplified)
ck_first_frostFirst Frost Date
ck_from_netcdfRead a netCDF File as a SpatRaster
ck_frost_daysFrost Days
ck_growing_degree_daysGrowing Degree Days
ck_growing_seasonGrowing Season Length
ck_heat_indexHeat Index
ck_heating_degree_daysHeating Degree Days
ck_heavy_precipHeavy Precipitation Days
ck_huglinHuglin Heliothermal Index
ck_humidexHumidex
ck_hwaHeatwave Amplitude (HWA)
ck_hwdHeatwave Duration (HWD)
ck_hwfHeatwave Frequency (HWF)
ck_hwmHeatwave Magnitude (HWM)
ck_hwnHeatwave Number (HWN)
ck_ice_daysIce Days
ck_last_frostLast Frost Date
ck_max_1day_precipMaximum 1-Day Precipitation
ck_max_5day_precipMaximum 5-Day Precipitation
ck_metadataGet Metadata for a Climate Index
ck_petPotential Evapotranspiration (Hargreaves Method)
ck_pet_pmReference Evapotranspiration (FAO-56 Penman-Monteith)
ck_precip_intensityPrecipitation Intensity (SDII)
ck_r95pVery Wet Days Total (R95p)
ck_r99pExtremely Wet Days Total (R99p)
ck_speiStandardized Precipitation-Evapotranspiration Index (SPEI)
ck_spiStandardized Precipitation Index (SPI)
ck_summer_daysSummer Days
ck_tn10pPercentage of Cool Nights (TN10p)
ck_tn90pPercentage of Warm Nights (TN90p)
ck_tnnAnnual or Monthly Minimum of Daily Minimum Temperature (TNn)
ck_tnxAnnual or Monthly Maximum of Daily Minimum Temperature (TNx)
ck_total_precipTotal Wet-Day Precipitation (PRCPTOT)
ck_tropical_nightsTropical Nights
ck_tx10pPercentage of Cool Days (TX10p)
ck_tx90pPercentage of Warm Days (TX90p)
ck_txnAnnual or Monthly Minimum of Daily Maximum Temperature (TXn)
ck_txxAnnual or Monthly Maximum of Daily Maximum Temperature (TXx)
ck_very_heavy_precipVery Heavy Precipitation Days
ck_warm_spellWarm Spell Days (Series-Quantile Approximation)
ck_wet_daysMaximum Consecutive Wet Days
ck_wind_chillWind Chill Temperature
ck_winklerWinkler Index
ck_wsdiWarm Spell Duration Index (WSDI)
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climatekit-packageclimatekit: Unified Climate Indices for Temperature,...
climatekit documentation built on May 9, 2026, 5:08 p.m.