PMIP4 and the CMIP6 Data Request

The CMIP6 data request for PMIP is a document that allows PMIP participants to specify which variables they are interested in, at which frequency, and for which scientific purpose. This documents specifies which variable type/frequency will be generated for each PMIP experiment, as well as the length of the experiments. It also specifies which experiments from other endorsed MIPs will be used by PMIP participants. See the actual spreadsheet below for more details

The variables requested for PMIP come from several sources (see the Documents section below for details)

• The PMIP 2 variables
• The CMIP5 variables
• Variables from other CMIP5-related MIPs (C4MIP, CORDEX, …)
• New isotope related variables suggested by Didier Roche
• Variables suggested by Yves Balkanski for dust

• Variables requested for PMIP 2

• From the CMIP5 Data Description page
  • The CMIP5 standard output document : this Excel spreadsheet describes all the variables that were requested for CMIP5

• The CMIP6 Data Request, Martin Juckes, WGCM Dubrovnik meeting, October 2015

In addition to many discussions, we have also used the following documents to create the PMIP4 request:

• The CMIP6 Data Request (Martin Juckes, October 2015)
• Documents describing the Data Request creation process
• Variables requested for PMIP 2
• Variables requested for CMIP5 (and PMIP 3!)
• A google spreadsheet combining several requests (this was our working document)

The actual data request is composed of 2 Excel spreadheets:

• An annotated version of the CMIP5 standard output document where we have specified a PMIP priority for each variable (see the rightmost column of each tab): same priority as CMIP5 (1), higher priority (2), not requested for PMIP (0)
  • pmip_standard_output_v150228_final.xls
• The CMIP6DataRequestCompilationTemplate document
  • cmip6datarequestcompilationtemplate_20141218_pmip_v150228_final.xls

Data Request (DR) web site: https://earthsystemcog.org/projects/wip/CMIP6DataRequest

• Understanding the CMIP6 DR MIP tables names

• Spreadsheet view of the variable definitions: a big spreadsheet (slightly similar to the CMIP5 standard output document).
  You get all the variables at all the frequencies, requested by all the projects, grouped by (CMOR) tables. A table lists the variables requested for a given realm (atmosphere, ocean, …) at a given frequency (daily, monthly, …). You get at the end of each line the projects that have requested the given variable in the current table.

• There are lots of ways to access the complex content of the DR and you may want to use the browsable HTML view of the request if you want to navigate some human-readable views of the DR
  • Model Intercomparison Project [mip] section
    • PMIP section

• Data request related issues (on github):
  • CMIP6_DataRequest_VariableDefinitions
  • Request
  • dreqPy