CLM5 Perturbed Parameter Ensembles

These data are the results of parameter sensitivity simulations and multiple perturbed parameter ensembles (PPE) with the Community Land Model, version 5 (CLM5). These simulations form the basis of a publication documenting a machine learning approach to studying parameter uncertainty in CLM5.

The parameter sensitivity simulations include thirty-four CLM5 biophysical parameters perturbed one at a time to their minimum and maximum values, as well as a control simulation with default parameter values. The output files are labeled by the parameter name with "_min" or "_max" to denote simulation type, where each file includes 5 years of monthly output. The simulation with default parameter values includes 30 years of monthly output, labeled "CLM_control".

The PPE simulations include six of the aforementioned parameters perturbed simultaneously. We use Latin Hypercube (LHC) sampling to generate 100 unique parameter sets for the top six parameters identified by the sensitivity simulations. There are two 100-member PPEs with present-day climate forcing conditions, but each uses a different LHC sampling. The output files are labeled "PPE_x" and "PPE_v2_x" with the ensemble member x from 1 to 100. There is also a simulation with default parameter values labeled "PPE_control". Again each file includes 5 years of monthly output.

We test optimized parameter values with CLM, the results of which are labeled "CLM_test_calibration", and this file also includes 5 years of monthly output.

To Access Resource:

Questions? Email Resource Support Contact:

  • Katie Dagon
    UCAR/NCAR - Climate and Global Dynamics Laboratory

Temporal Range

  • Begin:  2000-01-01
    End:  2004-12-31


Resource Type dataset
Temporal Range Begin 2000-01-01
Temporal Range End 2004-12-31
Temporal Resolution N/A
Bounding Box North Lat 90.0
Bounding Box South Lat -90.0
Bounding Box West Long -180.0
Bounding Box East Long 180.0
Spatial Representation N/A
Spatial Resolution 4.0 degreesLatitude
5.0 degreesLongitude
Related Links N/A
Additional Information N/A
Resource Format application/x-netcdf
Standardized Resource Format NetCDF
Asset Size N/A
Legal Constraints

Creative Commons Attribution 4.0 International License.

Access Constraints None
Software Implementation Language N/A

Resource Support Name Katie Dagon
Resource Support Email
Resource Support Organization UCAR/NCAR - Climate and Global Dynamics Laboratory
Distributor N/A
Metadata Contact Name GDEX Curator
Metadata Contact Email
Metadata Contact Organization UCAR/NCAR - GDEX

Author Dagon, Katie
Publisher UCAR/NCAR - GDEX
Publication Date 2020-02-25
Digital Object Identifier (DOI)
Alternate Identifier N/A
Resource Version N/A
Topic Category N/A
Progress N/A
Metadata Date 2022-07-21T12:25:44-06:00
Metadata Record Identifier edu.ucar.gdex::2af2ea2a-dc7f-4af9-b42b-ebd6ac1df662
Metadata Language eng; USA
Suggested Citation Dagon, Katie. (2020). CLM5 Perturbed Parameter Ensembles. UCAR/NCAR - GDEX. Accessed 12 July 2024.

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