NEX-GDDP-CMIP6: NASA Earth Exchange Global Daily Downscaled Climate Projections

NASA/GDDP-CMIP6
Dataset Availability
1950-01-01T00:00:00Z–2100-12-31T00:00:00Z
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("NASA/GDDP-CMIP6")

Description

The NEX-GDDP-CMIP6 dataset is comprised of global downscaled climate scenarios derived from the General Circulation Model (GCM) runs conducted under the Coupled Model Intercomparison Project Phase 6 (CMIP6, see Thrasher et al. 2022) and across two of the four "Tier 1" greenhouse gas emissions scenarios known as Shared Socioeconomic Pathways (SSPs).

The CMIP6 GCM runs were developed in support of the Sixth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC AR6). This dataset includes downscaled projections from ScenarioMIP model runs for which daily scenarios were produced and distributed through the Earth System Grid Federation.

This collection contains 34 different models. One model, "GFDL-CM4," has data for two different configurations that can be differentiated by further filtering on the grid_label property.

See also the provider tech note.

You can submit data questions about CMIP6 to the provider and see their answers.

Bands

Resolution
27830 meters

Bands

Name Units Min Max Description
hurs % -101.85* 179.44*

Near-surface relative humidity. Not present in these models: 'BCC-CSM2-MR', 'NESM3', 'KIOST-ESM' (only for scenario 'ssp245' in 2058).
huss Mass fraction -0.007* 11.76*

Near-surface specific humidity. Not present in these models: 'IPSL-CM6A-LR', 'MIROC6', 'NESM3'.
pr kg/m^2/s 0* 0.0083*

Precipitation (mean of the daily precipitation rate)
rlds W/m^2 -481.17* 908.96*

Surface downwelling longwave radiation
rsds W/m^2 -702710* 553087*

Surface downwelling shortwave radiation
sfcWind m/s -4.98* 28.29*

Daily-mean near-surface wind speed
tas K 192.15* 336.94*

Daily near-surface air temperature. Not present in these models: 'NorESM2-LM' (only for scenario 'ssp585' in 2096).
tasmin K 163.66* 334.92*

Daily minimum near-surface air temperature. Not present in these models: 'CESM2', 'CESM2-WACCM', 'IITM-ESM', 'TaiESM1' (only for scenario 'ssp585' in 2093).
tasmax K 202.09* 352.77*

Daily maximum near-surface air temperature. Not present in these models: 'CESM2', 'CESM2-WACCM', 'IITM-ESM'.
* estimated min or max value

Image Properties

Image Properties

Name Type Description
model STRING

Name of the CMIP6 model. It is one of:

  • ACCESS-CM2
  • ACCESS-ESM1-5
  • BCC-CSM2-MR
  • CESM2
  • CESM2-WACCM
  • CMCC-CM2-SR5
  • CMCC-ESM2
  • CNRM-CM6-1
  • CNRM-ESM2-1
  • CanESM5
  • EC-Earth3
  • EC-Earth3-Veg-LR
  • FGOALS-g3
  • GFDL-CM4 (see grid_label for additional information)
  • GFDL-ESM4
  • GISS-E2-1-G
  • HadGEM3-GC31-LL
  • HadGEM3-GC31-MM
  • IITM-ESM
  • INM-CM4-8
  • INM-CM5-0
  • IPSL-CM6A-LR
  • KACE-1-0-G
  • KIOST-ESM
  • MIROC-ES2L
  • MIROC6
  • MPI-ESM1-2-HR
  • MPI-ESM1-2-LR
  • MRI-ESM2-0
  • NESM3
  • NorESM2-LM
  • NorESM2-MM
  • TaiESM1
  • UKESM1-0-LL
scenario STRING

Name of the CMIP6 scenario. It is one of:

  • historical (retrospective model runs pre-2015)
  • ssp245
  • ssp585
year DOUBLE

Calendar year
month DOUBLE

Calendar month
day DOUBLE

Calendar day
grid_label STRING

The grid label, which is only set when differentiating simulation results for the 'GFDL-CM4' model. It is one of:

  • gr1
  • gr2
license STRING

The license under which a model is released. It will be one of:

  • CC-BY-4.0 (Creative Commons Attribution 4.0 International)
  • CC0-1.0 (Creative Commons Zero v1.0 Universal)
interpolated STRING

Present and 'true' if data for a particular day has been filled in using the value from the previous day. This happens when the simulation does not produce a data band for every day in the year.

The following models always duplicate the last day in leap years because they only yield 365 bands: 'BCC-CSM2-MR', 'CanESM5', 'CESM2', 'CESM2-WACCM', 'CMCC-CM2-SR5', 'CMCC-ESM2', 'FGOALS-g3', 'GFDL-CM4', 'GFDL-ESM4', 'GISS-E2-1-G', 'INM-CM4-8', 'INM-CM5-0', 'KIOST-ESM', 'NorESM2-LM', 'NorESM2-MM', 'TaiESM1'.

These models yield 360 bands per year and have the outstanding 5 or 6 days filled by duplicating one every 60-70 days: 'HadGEM3-GC31-LL', 'HadGEM3-GC31-MM', 'KACE-1-0-G', 'UKESM1-0-LL'.

'IITM-ESM' only has 364 bands in years divisible by 5 (and does not have data for 2100 at all), so the final day is always duplicated, plus the midpoint day in leap years.

Terms of Use

Terms of Use

All CMIP6 GCM model inputs and any derivatives work, such as this dataset, are governed by the original Terms of use and may have some restrictions on usage. See the "license" property on each EE Image that notes the specific license the data may fall under.

(Note that while the official Terms of Use mention that some models are restricted under 'CC-BY-SA-4.0' (Creative Commons Attribution Share Alike 4.0 International), models available in EarthEngine either fall under 'CC-BY-4.0' (Creative Commons Attribution 4.0 International) or 'CC0-1.0' (Creative Commons Zero v1.0 Universal).)

Citations

Citations:

  • Thrasher, B., Maurer, E. P., McKellar, C., & Duffy, P. B., 2012: Technical Note: Bias correcting climate model simulated daily temperature extremes with quantile mapping. Hydrology and Earth System Sciences, 16(9), 3309-3314. doi:10.5194/hess-16-3309-2012

Explore with Earth Engine

Code Editor (JavaScript)

var dataset = ee.ImageCollection('NASA/GDDP-CMIP6')
                  .filter(ee.Filter.date('2014-07-01', '2014-07-02'))
                  .filter(ee.Filter.eq('model', 'ACCESS-CM2'));
var minimumAirTemperature = dataset.select('tasmin');
var minimumAirTemperatureVis = {
  min: 240,
  max: 310,
  palette: ['blue', 'purple', 'cyan', 'green', 'yellow', 'red'],
};
Map.setCenter(71, 52, 3);
Map.addLayer(
    minimumAirTemperature, minimumAirTemperatureVis,
    'Minimum Air Temperature (K)');
Open in Code Editor
The NEX-GDDP-CMIP6 dataset is comprised of global downscaled climate scenarios derived from the General Circulation Model (GCM) runs conducted under the Coupled Model Intercomparison Project Phase 6 (CMIP6, see Thrasher et al. 2022) and across two of the four "Tier 1" greenhouse gas emissions scenarios known as Shared Socioeconomic Pathways …
NASA/GDDP-CMIP6, cag,climate,gddp,geophysical,ipcc,nasa,nex,precipitation,temperature
1950-01-01T00:00:00Z/2100-12-31T00:00:00Z
Google Earth Engine