Provides detailed information about variables in the CHELSA (Climatologies at High Resolution for the Earth's Land Surface Areas) dataset, including names, units, and descriptions.
Format
A tibble with 47 rows and 6 columns:
var_name(character): Variable short name, e.g., "bio1".long_name(character): Full variable name, e.g., "mean annual air temperature".unit(character): Measurement unit, e.g., "°C".scale(numeric): Scale factor applied to the variable.offset(numeric): Offset value applied to the variable.explanation(character): Description of the variable.
Examples
# Load the CHELSA variable information
library(ecokit)
library(tibble)
options(pillar.print_max = 64)
data("chelsa_var_info", package = "ecokit")
ecokit::ht(chelsa_var_info)
#> var_name long_name
#> <char> <char>
#> 1: bio1 mean annual air temperature
#> 2: bio2 mean diurnal air temperature range
#> 3: bio3 isothermality
#> 4: bio4 temperature seasonality
#> 5: bio5 mean daily maximum air temperature of the warmest month
#> ---
#> 42: ngd5 Number of growing degree days
#> 43: ngd10 Number of growing degree days
#> 44: npp Net primary productivity
#> 45: scd Snow cover days
#> 46: swe Snow water equivalent
#> unit scale offset
#> <char> <num> <num>
#> 1: °C 0.1 -273.15
#> 2: °C 0.1 0.00
#> 3: °C 0.1 0.00
#> 4: °C/100 0.1 0.00
#> 5: °C 0.1 -273.15
#> ---
#> 42: number of days NA NA
#> 43: number of days NA NA
#> 44: g C m−2 yr−1 0.1 0.00
#> 45: count NA NA
#> 46: kg m-2 year-1 0.1 0.00
#> explanation
#> <char>
#> 1: mean annual daily mean air temperatures averaged over 1 year
#> 2: mean diurnal range of temperatures averaged over 1 year
#> 3: ratio of diurnal variation to annual variation in temperatures
#> 4: standard deviation of the monthly mean temperatures
#> 5: The highest temperature of any monthly daily mean maximum temperature
#> ---
#> 42: Number of days at which tas > 5°C
#> 43: Number of days at which tas > 10°C
#> 44: Calculated based on the ‘Miami model’, Lieth, H., 1972. "Modelling the primary productivity of the earth. Nature and resources", UNESCO, VIII, 2:5-10.
#> 45: Number of days with snowcover calculated using the snowpack model implementation in from TREELIM (https://doi.org/10.1007/s00035-0140124-0)
#> 46: Amount of liquid water if snow is melted