海拔數(shù)據(jù)下載

http://edcintl.cr.usgs.gov/downloads/sciweb1/shared/topo/downloads/GMTED/Grid_ZipFiles/mn30_grd.zip

CHELSA提供的19個Bioclimate 數(shù)據(jù)下載

https://www.wsl.ch/lud/chelsa/data/bioclim/integer/

各環(huán)境變量

Bio1 = Annual Mean Temperature 年均溫?

Bio2 = Mean Diurnal Range，即 Mean of monthly (max temp - min temp) 平均月溫差?

Bio3 = Isothermality 等溫性

Bio4 = Temperature Seasonality 溫度的季節(jié)性?

Bio5 = Max Temperature of Warmest Month 最暖月最高溫?

Bio6 = Min Temperature of Coldest Month 最冷月最低溫?

Bio7 = Temperature Annual Range 氣溫年較差?

Bio8 = Mean Temperature of Wettest Quarter 最濕季均溫

Bio9 = Mean Temperature of Driest Quarter 最干季均溫?

Bio10 = Mean Temperature of Warmest Quarter 最暖月均溫?

Bio11 = Mean Temperature of Coldest Quarter 最冷月均溫?

Bio12 = Annual Precipitation 年降水?

Bio13 = Precipitation of Wettest Month 最濕潤月降水?

Bio14 = Precipitation of Driest Month 最干旱月降水?

Bio15 = Precipitation Seasonality 氣溫的季節(jié)性?

Bio16 = Precipitation of Wettest Quarter 最濕潤季降水?

Bio17 = Precipitation of Driest Quarter 最干旱季降水?

Bio18 = Precipitation of Warmest Quarter 最暖季降水?

Bio19 = Precipitation of Coldest Quarter 最冷季降水

CHELSA氣候圖層， 選擇整數(shù)還是浮點數(shù)圖層？

可選擇整數(shù)圖層 integer ，這是因為整數(shù)圖層占用空間較小， 同時也有相對較高的精度， 如溫度可精確到0.1度。 注意，這里的溫度是*10的值， 也就說，某地年均溫為15.2度， 則提取出的數(shù)值為152。