Terraclimate Individual year TerraClimate layers for +2C and +4C climate futures commensurate with global mean temperatures +2C and +4C above pre-industrial levels. These data are available for the hypothetical years 1985-2015. Future climate projections were developed for two different future climates: (1) when the global mean temperature is 2C warmer than pre-industrial, and (2) when the global mean temperature is 4C warmer than pre-industrial. We use a method of model scaling, utilizing the monthly projections of the 23 CMIP5 global climate models described in Qin et al., 2020, and providing projections of the monthly climate by imposing predicted changes from the mean and variance of the models that can Extended to changes in global temperature. Foreword – Bed Length AI Tutorial You can find more information here https://www.climatologylab.org/terraclimate.html
This data has two links
This data is at two links
Citation¶
Abatzoglou, J.T., S.Z. Dobrowski, S.A. Parks, K.C. Hegewisch, 2018, Terraclimate, a high-resolution global dataset of monthly climate and climatic water
balance from 1958-2015, Scientific Data
Data preprocessing
We created an automated script to take all the datasets, which consisted of 31 annual NetCDF files, each with 12 bands representing one month for each variable. The netcdf files for each variable are converted to Geotifs with global bounds and lzw compression. These datasets are available for both 2C and 4C scenarios, and scale and offset are added as metadata to each dataset for handling in the appropriate units mentioned in the variable list below.
List of Variables¶
Terraclimate variables and units can be found in the table below. As their webpage states, these datasets have associated scale and offset values that must be used to generate a correct representation of the variable data in predetermined units. As part of data processing, variable scale and offset values are included as metadata for each variable, which can then be directly applied to calculations.
| variable | units |
|---|---|
| aet (Actual Evapotranspiration, monthly total) | mm |
| def (Climate Water Deficit, monthly total) | mm |
| pet (Potential evapotranspiration, monthly total) | mm |
| ppt (Precipitation, monthly total) | mm |
| q (Runoff, monthly total) | mm |
| soil (Soil Moisture, total column - at end of month) | mm |
| srad (Downward surface shortwave radiation) | W/m2 |
| swe (Snow water equivalent - at end of month) | mm |
| tmax (Max Temperature, average for month) | C |
| tmin (Min Temperature, average for month) | C |
| vap (Vapor pressure, average for month) | kPa |
| ws (Wind speed, average for month) | m/s |
| vpd (Vapor Pressure Deficit, average for month) | kpa |
| PDSI (Palmer Drought Severity Index, at end of month) | unitless |
| PDSI (Palmer Drought Severity Index, at end of month) | unitless |
Earth Engine Snippet¶
var aet_2c = ee.ImageCollection("projects/sat-io/open-datasets/TERRACLIMATE/2C/aet");
var def_2c = ee.ImageCollection("projects/sat-io/open-datasets/TERRACLIMATE/2C/def");
var pet_2c = ee.ImageCollection("projects/sat-io/open-datasets/TERRACLIMATE/2C/pet");
var ppt_2c = ee.ImageCollection("projects/sat-io/open-datasets/TERRACLIMATE/2C/ppt");
var soil_2c = ee.ImageCollection("projects/sat-io/open-datasets/TERRACLIMATE/2C/soil");
var srad_2c = ee.ImageCollection("projects/sat-io/open-datasets/TERRACLIMATE/2C/srad");
var swe_2c = ee.ImageCollection("projects/sat-io/open-datasets/TERRACLIMATE/2C/swe");
var tmax_2c = ee.ImageCollection("projects/sat-io/open-datasets/TERRACLIMATE/2C/tmax");
var tmin_2c = ee.ImageCollection("projects/sat-io/open-datasets/TERRACLIMATE/2C/tmin");
var vap_2c = ee.ImageCollection("projects/sat-io/open-datasets/TERRACLIMATE/2C/vap");
var vpd_2c = ee.ImageCollection("projects/sat-io/open-datasets/TERRACLIMATE/2C/vpd");
var aet_4c = ee.ImageCollection("projects/sat-io/open-datasets/TERRACLIMATE/4C/aet");
var def_4c = ee.ImageCollection("projects/sat-io/open-datasets/TERRACLIMATE/4C/def");
var pet_4c = ee.ImageCollection("projects/sat-io/open-datasets/TERRACLIMATE/4C/pet");
var ppt_4c = ee.ImageCollection("projects/sat-io/open-datasets/TERRACLIMATE/4C/ppt");
var soil_4c = ee.ImageCollection("projects/sat-io/open-datasets/TERRACLIMATE/4C/soil");
var swe_4c = ee.ImageCollection("projects/sat-io/open-datasets/TERRACLIMATE/4C/swe");
var tmax_4c = ee.ImageCollection("projects/sat-io/open-datasets/TERRACLIMATE/4C/tmax");
var tmin_4c = ee.ImageCollection("projects/sat-io/open-datasets/TERRACLIMATE/4C/tmin");
var vpd_4c = ee.ImageCollection("projects/sat-io/open-datasets/TERRACLIMATE/4C/vpd");
License¶
This work is licensed under a public domain license.
Created by: Abatzoglou, J.T., S.Z. Dobrowski, S.A. Parks, K.C. Hegewisch
Preprocessed and Curated in GEE by : Samapriya Roy
Keywords: Climate futures, +2C, +4C, TerraClimate
Last updated: 2021-04-15
Last updated on GEE: 2022-04-27