Table 1: Summary of MERRAclim’s bioclimatic variables.

From: MERRAclim, a high-resolution global dataset of remotely sensed bioclimatic variables for ecological modelling

Variable shortname Variable description Units Variable type Resolution Version Decade Naming convention Example
BIO1 Annual Mean Temperature *10 °C temperature-related 10 m, 5 m, 2.5 m min, mean, max 80 s, 90 s, 00 s resolution_version_decade_BIO1.tif 10m_min_00s_BIO1.tif (BIO1 from 00 s decade at 10 m resolution from version Vmin)
BIO2 Mean Diurnal Range Temperature *10 °C temperature-related 10 m, 5 m, 2.5 m min, mean, max 80 s, 90 s, 00 s resolution_version_decade_BIO2.tif 2_5m_mean_90s_BIO2.tif (BIO2 from 90 s decade at 2.5 m resolution from version Vmean)
BIO3 Isothermality (BIO2/BIO7) (* 100) *10 °C temperature-related 10 m, 5 m, 2.5 m min, mean, max 80 s, 90 s, 00 s resolution_version_decade_BIO3.tif 10m_max_80s_BIO3.tif (BIO3 from 80 s decade at 10 m resolution from version Vmax)
BIO4 Temperature Seasonality(standard deviation *100) *10 °C temperature-related 10 m, 5 m, 2.5 m min, mean, max 80 s, 90 s, 00 s resolution_version_decade_BIO4.tif 5m_min_00s_BIO4.tif (BIO4 from 00 s decade at 5 m resolution from version Vmin)
BIO5 Max Temperature of Warmest Month *10 °C temperature-related 10 m, 5 m, 2.5 m min, mean, max 80 s, 90 s, 00 s resolution_version_decade_BIO5.tif 2_5_mean_90s_BIO5.tif (BIO5 from 90 s decade at 2.5 m resolution from version Vmean)
BIO6 Min Temperature of Coldest Month *10 °C temperature-related 10 m, 5 m, 2.5 m min, mean, max 80 s, 90 s, 00 s resolution_version_decade_BIO6.tif 10m_min_80s_BIO6.tif (BIO6 from 80 s decade at 10 m resolution from version Vmin)
BIO7 Temperature Annual Range (BIO5-BIO6) *10 °C temperature-related 10 m, 5 m, 2.5 m min, mean, max 80 s, 90 s, 00 s resolution_version_decade_BIO7.tif 5m_max_00s_BIO7.tif (BIO7 from 00 s decade at 5 m resolution from version Vmax)
BIO8 Mean temperature of most humid quarter *10 °C combined 10 m, 5 m, 2.5 m min, mean, max 80 s, 90 s, 00 s resolution_version_decade_BIO8.tif 10m_mean_90s_BIO8.tif (BIO8 from 90 s decade at 10 m resolution from version Vmean)
BIO9 Mean temperature of least humid quarter *10 °C combined 10 m, 5 m, 2.5 m min, mean, max 80 s, 90 s, 00 s resolution_version_decade_BIO9.tif 2_5m_min_80s_BIO9.tif (BIO9 from 80 s decade at 2.5 m resolution from version Vmin)
BIO10 Mean Temperature of Warmest Quarter *10 °C temperature-related 10 m, 5 m, 2.5 m min, mean, max 80 s, 90 s, 00 s resolution_version_decade_BIO10.tif 5m_max_00s_BIO10.tif (BIO10 from 00 s decade at 5 m resolution from version Vmax)
BIO11 Mean Temperature of Coldest Quarter *10 °C temperature-related 10 m, 5 m, 2.5 m min, mean, max 80 s, 90 s, 00 s resolution_version_decade_BIO11.tif 2_5m_mean_80s_BIO11.tif (BIO11 from 80 s decade at 2.5 m resolution from version Vmean)
BIO12 Annual Mean Specific Humidity 100000 * kg of water/kg of air water-related 10 m, 5 m, 2.5 m min, mean, max 80 s, 90 s, 00 s resolution_version_decade_BIO12.tif 10m_min_90s_BIO12.tif (BIO12 from 90 s decade at 10 m resolution from version Vmin)
BIO13 Specific Humidity of most humid Month 100000 * kg of water/kg of air water-related 10 m, 5 m, 2.5 m min, mean, max 80 s, 90 s, 00 s resolution_version_decade_BIO13.tif 5m_max_80s_BIO13.tif (BIO13 from 80 s decade at 5 m resolution from version Vmax)
BIO14 Specific Humidity of least humid Month 100000 * kg of water/kg of air water-related 10 m, 5 m, 2.5 m min, mean, max 80 s, 90 s, 00 s resolution_version_decade_BIO14.tif 5m_mean_90s_BIO14.tif (BIO14 from 90 s decade at 5 m resolution from version Vmean)
BIO15 Specific Humidity seasonality (Coefficient of variation) 100000 * kg of water/kg of air water-related 10 m, 5 m, 2.5 m min, mean, max 80 s, 90 s, 00 s resolution_version_decade_BIO15.tif 2_5m_min_00s_BIO15.tif (BIO15 from 00 s decade at 2.5 m resolution from version Vmin)
BIO16 Specific Humidity Mean of most humid quarter 100000 * kg of water/kg of air water-related 10 m, 5 m, 2.5 m min, mean, max 80 s, 90 s, 00 s resolution_version_decade_BIO16.tif 5m_mean_90s_BIO16.tif (BIO16 from 90 s decade at 5 m resolution from version Vmean)
BIO17 Specific Humidity Mean of least humid quarter 100000 * kg of water/kg of air water-related 10 m, 5 m, 2.5 m min, mean, max 80 s, 90 s, 00 s resolution_version_decade_BIO17.tif 10m_max_80s_BIO17.tif (BIO17 from 80 s decade at 10 m resolution from version Vmax)
BIO18 Specific Humidity Mean of warmest quarter 100000 * kg of water/kg of air combined 10 m, 5 m, 2.5 m min, mean, max 80 s, 90 s, 00 s resolution_version_decade_BIO18.tif 5m_mean_00s_BIO18.tif (BIO18 from 00 s decade at 5m resolution from version Vmean)
BIO19 Specific Humidity Mean of coldest quarter 100000 * kg of water/kg of air combined 10 m, 5 m, 2.5 m min, mean, max 80 s, 90 s, 00 s resolution_version_decade_BIO19.tif 2_5m_max_00s_BIO19.tif (BIO19 from 00 s decade at 2.5 m resolution from version Vmax)
  1. There are 11 temperature-related variables of which two are combined and 7 water-related variables of which two are combined.