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Priority Replication at NCI

Data produced at other modelling centres around the globe will be replicated locally at NCI. Due to the large volumes expected for CMIP6 (estimates have put it at ~20PB), not all the data will be able to be replicated. Due to volume restrictions and download speed capabilities, a set of priority variables will be included in the "priority" download list, and any additional datasets will need to be requested for download through NCI (see below).

The steps in which NCI will undertake a bulk download of priority variables and experiment for replication of the CMIP6 data is outlined below:

  1. Determine Priority Variables/Experiment

    1. A variable list based on user surveys, global CMIP5 download statistics and current CMIP5 data replicated at NCI has been created capturing the highest priority variables and experiments that will be included in the priority download. See Datasets and Available Variables to view the bulk download variables.

  2. Data Replication

    1. The priority download list for CMIP6 is broken into different priorities for replication. 

    2. Replication is performed using the download tool Synda, which organises the data into the correct directory structure.
    3. Users will be kept up to date on plans and progress via updates on the CMIP Home page and email notifications to users.

    4. Regular checks are performed for updates and new versions downloaded when available.


How to Request CMIP Data at NCI

Steps to request NCI download CMIP or related data for Australian climate science research:

  1. Check if the desired dataset is already available

    1. First check if the dataset is on the file system using ARCCSSive or by checking the table of currently downloaded data:

      CMIP6 Current Download
      		Link to Searchable Table

      For further information on the available datasets and variables see the Datasets and Available Variables page.


  2. If the dataset is not on the file system, check if it is in the download plan

    1. The user checks details on dataset download plan:

      CMIP6 Priority Download
      		Link to Searchable Table

    2. If the user sees their data in the download plan with the data to be provided in a suitable time frame, no further action is required.


  3. If required data is not on the file system or in the download plan

    1. If a user wishes to request data to be downloaded at NCI for analysis, please fill out the relevant request form below. In each case you will need to include:

      1. Variable's required and the output table_id with frequency and realm.

      2. Model's to be included.

      3. The experiment and ensemble information.

      4. Your institution and NCI user name.

    2. The requested data will be added to the download queue with details of priority and download status.

To request that CMIP6, CMIP5 or CORDEX data be downloaded at NCI, please use the following respective forms:

Alternatively you may also use the Climate Finder tool CleF to make a download request.


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