Identification

Title

CLM5 Perturbed Parameter Ensembles

Abstract

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.

Resource type

dataset

Resource locator

https://gdex.ucar.edu/dataset/id/2af2ea2a-dc7f-4af9-b42b-ebd6ac1df662.html

protocol: https

applicationProfile: browser

name: CLM5 Perturbed Parameter Ensembles

description: Metadata Link

function: download

Unique resource identifier

code

codeSpace

Dataset language

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

Keywords

Keyword set

keyword value

Dataset

originating controlled vocabulary

title

reference date

date type

revision

effective date

2014-10-16

Keyword set

keyword value

EARTH SCIENCE > CLIMATE INDICATORS > BIOSPHERIC INDICATORS

EARTH SCIENCE > CLIMATE INDICATORS > LAND SURFACE/AGRICULTURE INDICATORS

EARTH SCIENCE SERVICES > MODELS > LAND SURFACE MODELS

originating controlled vocabulary

title

reference date

date type

revision

effective date

2018-03-15

Geographic location

West bounding longitude

-180.0

East bounding longitude

180.0

North bounding latitude

90.0

South bounding latitude

-90.0

Temporal reference

Temporal extent

Begin position

2000-01-01

End position

2004-12-31

Dataset reference date

date type

publication

effective date

2020-02-25

date type

modified

effective date

2020-02-11

Frequency of update

Quality and validity

Lineage

Conformity

Data format

name of format

application/x-netcdf

version of format

Constraints related to access and use

Constraint set

Use constraints

Creative Commons Attribution 4.0 International License.

Limitations on public access

None

Responsible organisations

Responsible party

organisation name

UCAR/NCAR - Climate and Global Dynamics Laboratory

email address

kdagon@ucar.edu

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

organisation name

UCAR/NCAR - GDEX

email address

datahelp@ucar.edu

responsible party role

pointOfContact

Metadata date

2022-07-21T12:25:44-06:00

Metadata language