Returns a data frame listing every index that climatekit can compute,
along with its category, unit, and a short description.
Examples
ck_available()
#> index category unit
#> 1 frost_days temperature days
#> 2 ice_days temperature days
#> 3 summer_days temperature days
#> 4 tropical_nights temperature days
#> 5 txx temperature °C
#> 6 tnx temperature °C
#> 7 txn temperature °C
#> 8 tnn temperature °C
#> 9 tx10p temperature %
#> 10 tn10p temperature %
#> 11 tx90p temperature %
#> 12 tn90p temperature %
#> 13 wsdi temperature days
#> 14 csdi temperature days
#> 15 diurnal_range temperature °C
#> 16 growing_season temperature days
#> 17 warm_spell temperature days
#> 18 hwn temperature events
#> 19 hwf temperature days
#> 20 hwd temperature days
#> 21 hwm temperature °C
#> 22 hwa temperature °C
#> 23 cwn temperature events
#> 24 cwf temperature days
#> 25 cwd temperature days
#> 26 cwm temperature °C
#> 27 cwa temperature °C
#> 28 ehf temperature °C^2
#> 29 heating_degree_days temperature degree-days
#> 30 cooling_degree_days temperature degree-days
#> 31 growing_degree_days temperature degree-days
#> 32 total_precip precipitation mm
#> 33 dry_days precipitation days
#> 34 wet_days precipitation days
#> 35 heavy_precip precipitation days
#> 36 very_heavy_precip precipitation days
#> 37 max_1day_precip precipitation mm
#> 38 max_5day_precip precipitation mm
#> 39 precip_intensity precipitation mm/day
#> 40 r95p precipitation mm
#> 41 r99p precipitation mm
#> 42 spi drought dimensionless
#> 43 spei drought dimensionless
#> 44 pet drought mm
#> 45 pet_pm drought mm
#> 46 huglin agroclimatic degree-days
#> 47 winkler agroclimatic degree-days
#> 48 branas agroclimatic mm·°C
#> 49 first_frost agroclimatic day of year
#> 50 last_frost agroclimatic day of year
#> 51 heat_index comfort °C
#> 52 humidex comfort unitless
#> 53 wind_chill comfort °C
#> 54 fire_danger comfort unitless
#> description
#> 1 Count of days where Tmin < 0°C
#> 2 Count of days where Tmax < 0°C
#> 3 Count of days where Tmax > 25°C
#> 4 Count of days where Tmin > 20°C
#> 5 Annual or monthly maximum of daily Tmax (ETCCDI TXx)
#> 6 Annual or monthly maximum of daily Tmin (ETCCDI TNx, warmest night)
#> 7 Annual or monthly minimum of daily Tmax (ETCCDI TXn, coldest day)
#> 8 Annual or monthly minimum of daily Tmin (ETCCDI TNn, coldest night)
#> 9 Percentage of cool days (ETCCDI TX10p, Tmax below calendar-day 10th percentile)
#> 10 Percentage of cool nights (ETCCDI TN10p, Tmin below calendar-day 10th percentile)
#> 11 Percentage of warm days (ETCCDI TX90p, Tmax above calendar-day 90th percentile)
#> 12 Percentage of warm nights (ETCCDI TN90p, Tmin above calendar-day 90th percentile)
#> 13 Warm spell duration index (ETCCDI WSDI, 1961-1990 calendar-day Tmax 90p base)
#> 14 Cold spell duration index (ETCCDI CSDI, 1961-1990 calendar-day Tmin 10p base)
#> 15 Mean daily temperature range (Tmax - Tmin)
#> 16 Growing season length (ETCCDI: 6-day spells of Tmean > 5°C)
#> 17 Warm spell days (simplified, see ck_wsdi for ETCCDI WSDI)
#> 18 Annual count of heatwave events (ET-SCI HWN; Tmax above the calendar-day 90th percentile for at least 3 days)
#> 19 Annual count of days contributing to heatwaves (ET-SCI HWF)
#> 20 Length of the longest heatwave in the period (ET-SCI HWD)
#> 21 Mean temperature across heatwave days (ET-SCI HWM)
#> 22 Peak temperature of the hottest heatwave (ET-SCI HWA)
#> 23 Annual count of cold-wave events (ET-SCI CWN; Tmin below the calendar-day 10th percentile for at least 3 days)
#> 24 Annual count of days contributing to cold waves (ET-SCI CWF)
#> 25 Length of the longest cold wave in the period (ET-SCI CWD; not the ETCCDI consecutive wet days index, which is ck_wet_days)
#> 26 Mean temperature across cold-wave days (ET-SCI CWM)
#> 27 Lowest temperature of the coldest cold wave (ET-SCI CWA)
#> 28 Excess Heat Factor, the Bureau of Meteorology operational heatwave metric
#> 29 Sum of (base - Tavg) for days below base temperature
#> 30 Sum of (Tavg - base) for days above base temperature
#> 31 Sum of (Tavg - base) for days above base temperature
#> 32 Total precipitation by period
#> 33 Maximum consecutive dry days (precip < threshold)
#> 34 Maximum consecutive wet days (precip >= threshold)
#> 35 Count of days with precipitation >= threshold
#> 36 Count of days with precipitation >= threshold
#> 37 Maximum 1-day precipitation
#> 38 Maximum 5-day precipitation total
#> 39 Mean precipitation on wet days (SDII)
#> 40 Annual total precipitation on days above 95th percentile of 1961-1990 wet-day baseline (ETCCDI R95p)
#> 41 Annual total precipitation on days above 99th percentile of 1961-1990 wet-day baseline (ETCCDI R99p)
#> 42 Standardised Precipitation Index
#> 43 Standardised Precipitation-Evapotranspiration Index
#> 44 Potential evapotranspiration (Hargreaves method)
#> 45 Reference evapotranspiration (FAO-56 Penman-Monteith method)
#> 46 Huglin heliothermal index for viticulture
#> 47 Winkler index (growing degree days for wine regions)
#> 48 Branas hydrothermal index
#> 49 Date of first autumn frost (Tmin < 0°C)
#> 50 Date of last spring frost (Tmin < 0°C)
#> 51 Heat index (apparent temperature)
#> 52 Canadian humidex
#> 53 Wind chill temperature
#> 54 Simplified fire danger proxy (not FWI)