Skip to content

Metadata Section

The metadata section in the request configuration contains all metadata settings about the experiment that should be processed.

Configuration Values

branch_method
branching procedure - standard, continuation or no parent
base_date

used to define the units of the time coordinate in the netCDF file. Format: yyyy-mm-ddTHH:MM:SSZ, e.g. 1850-01-01T00:00:00Z

Default: 1850-01-01T00:00:00Z

calendar
that should be used - 360_day or gregorian
experiment_id
experiment identifier
institution_id
institution identifier, e.g. MOHC for Met Office Hadley Centre
license

license restrictions. It ensures that anyone using the files has access to the terms of use.

Default: The licenses that the corresponding plugin is provided for the given MIP era.

mip
the model intercomparison project, e.g. ScenarioMIP
mip_era
the associated cycle, e.g. CMIP6, GCDevModel, CORDEX
sub_experiment_id

identifier of the sub experiment. For example, it is needed for CMIP6 hindcast or forecast experiments to indicate start year. If no sub experiment is given, set it to none

Default: none

variant_label
the label of the variant of the experiment that should be considered.
model_id
a short name identifying the model, also know as source_id, e.g. HadGEM3-GC31-LL.
model_type
a text code identifying which model components are used in the given experiments separated by white spaces, e.g. AOGCM AER BGC

Configuration values for parent experiment

Following configuration values are only needed to be set if the branch_method is standard or continuation:

branch_date_in_child
branch data with respect to child's time axis. Format: yyyy-mm-ddTHH:MM:SSZ, e.g. 1990-01-01T00:00:00Z
branch_date_in_parent
branch date with respect to parent time axis Format: yyyy-mm-ddTHH:MM:SSZ, e.g. 2000-01-01T00:00:00Z
parent_base_date

used to define the units of the time coordinate in the netCDF files. Format: yyyy-mm-ddTHH:MM:SSZ, e.g. 2005-01-01T00:00:00Z

Default: 1850-01-01T00:00:00Z

parent_experiment_id
parent experiment identifier, e.g. piControl
parent_mip
the model intercomparison project of the parent experiment
parent_mip_era
parent's associated MIP cycle, e.g. CMIP6
parent_model_id

a short name identifying the parent model, e.g. HadGEM3-GC31-LL.

Default: The same model ID of the experiment that should be processed

parent_time_units

the time units used in the parent experiment.

Default: days since 1850-01-01

parent_variant_label
the label of the specific variant of the parent experiment that should be considered.

Examples

CIMP6 experiment without parent

[metadata]
branch_method = no parent
calendar = 360_day
experiment_id = amip
institution_id = MOHC
license = CMIP6 model data produced by MOHC is licensed under a Creative 
          Commons Attribution ShareAlike 4.0 International License
mip = CMIP
mip_era = CMIP6
sub_experiment_id = none
variant_label = r1i1p1f4
model_id = UKESM1-0-LL
model_type = AGCM AER CHEM
standard_names_version = latest
standard_names_dir = /home/h03/cdds/etc/standard_names

CMIP6 experiment with parent

[metadata]
branch_date_in_child = 1850-01-01T00:00:00Z
branch_date_in_parent = 2250-01-01T00:00:00Z
branch_method = standard
child_base_date = 1850-01-01T00:00:00Z
calendar = 360_day
experiment_id = historical
institution_id = MOHC
license = CMIP6 model data produced by MOHC is licensed under a Creative 
          Commons Attribution ShareAlike 4.0 International License.
mip = CMIP
mip_era = CMIP6
parent_base_date = 1850-01-01T00:00:00Z
parent_experiment_id = piControl
parent_mip = CMIP
parent_mip_era = CMIP6
parent_model_id = UKESM1-0-LL
parent_time_units = days since 1850-01-01
parent_variant_label = r1i1p1f2
sub_experiment_id = none
variant_label = r1i1p1f2
standard_names_version = latest
standard_names_dir = /home/h03/cdds/etc/standard_names/
model_id = UKESM1-0-LL
model_type = AOGCM BGC AER CHEM