This dataset metadata was generated with the use of AI and reviewed by an expert. If you see any mistakes please file an issue on GitHub at https://github.com/earthcube/communityCollections/issues.
CHELSA-bioclim is a global, kilometer-scale climate dataset generated with the CHELSA downscaling model. It consists of bioclimatic variables and related predictors used in ecological and environmental analyses.
WSL (Swiss Federal Institute for Forest, Snow and Landscape Research)
Mean Annual Near-Surface Air Temperature
Mean annual temperature calculated as the average of mean monthly temperatures over the year
Mean Diurnal Near-Surface Air Temperature Range
Mean diurnal temperature range computed as the average of monthly daily maximum minus daily minimum near-surface air temperature
Isothermality: 100 × bio02 ÷ bio07; compares day-night variability to annual temperature range
Temperature seasonality given by the standard deviation of mean monthly temperatures
Mean Daily Maximum Near-Surface Air Temperature of the Warmest Month
Highest monthly mean of daily maximum temperatures across the year; indicates peak thermal conditions
Mean Daily Minimum Near-Surface Air Temperature of the Coldest Month
Lowest monthly mean of daily minimum temperatures across the year; characterizes winter cold intensity
Annual Daily Mean Near-Surface Air Temperature Range
Annual temperature range calculated as bio05 minus bio06; measures amplitude between warmest and coldest months
Mean Daily Near-Surface Air Temperature of the Wettest Quarter
Average monthly mean temperature over the wettest three-month period of the year
Mean Daily Near-Surface Air Temperature of the Driest Quarter
Average monthly mean temperature over the driest three-month period of the year
Mean Daily Mean Near-Surface Air Temperature of the Warmest Quarter
Average monthly mean temperature over the warmest three-month period of the year
Mean Daily Mean Near-Surface Air Temperature of the Coldest Quarter
Average monthly mean temperature over the coldest three-month period of the year
Sum of monthly precipitation totals across the year
Coefficient of variation: 100 × standard deviation ÷ mean of monthly precipitation totals
Mean Monthly Precipitation of the Wettest Quarter
Average monthly precipitation during the wettest three-month period of the year
Mean Monthly Precipitation of the Driest Quarter
Average monthly precipitation during the driest three-month period of the year
Mean Monthly Precipitation of the Warmest Quarter
Average monthly precipitation during the warmest three-month period of the year
Mean Monthly Precipitation of the Coldest Quarter
Average monthly precipitation during the coldest three-month period of the year
Number of freeze-thaw transitions per year.
Julian day marking the first occurrence of growing season conditions.
Sum of daily mean temperatures above 0 °C accumulated over the year.
Growing Degree Days Heat Sum above 10 °C
Sum of daily mean temperatures above 10 °C accumulated over the year.
Sum of daily mean temperatures above 5 °C accumulated over the year.
Julian day of the first occurrence of a daily mean temperature above 10 °C.
Julian day of the first occurrence of a daily mean temperature above 5 °C.
Number of days between the first and last occurrence of growing season conditions.
Accumulated Precipitation Amount on Growing Season Days
Total precipitation accumulated during the growing season period.
Average daily mean temperature over all growing season days.
Köppen-Geiger Climate Classification without As and Aw Differentiation
Köppen-Geiger Climate Classification after Peel et al. 2007
Climate Classification after Wissmann 1939
Climate Classification after Thornthwaite 1931
Climate Classification after Troll-Pfaffen
Julian day of the last occurrence of growing season conditions.
Number of Growing Degree Days above 0 °C
Total number of days in a year with mean daily temperature above 0 °C.
Number of Growing Degree Days above 10 °C
Total number of days in a year with mean daily temperature above 10 °C.
Number of Growing Degree Days above 5 °C
Total number of days in a year with mean daily temperature above 5 °C.
Net Primary Production on Land as Carbon Mass Flux
Net primary production on land expressed as carbon mass flux.
Number of days per year with snow cover present at the surface.
Total water equivalent of snowpack accumulated over the year.
Download portal for CHELSA bioclimatic variables.
Global climate-related predictors at kilometer resolution for the past and future
CHELSA-BIOCLIM+ A novel set of global climate-related predictors at kilometre-resolution