ERA5 Community

The ERA5 replica at NCI follows the structure and naming convention provided by ECMWF wherever possible and can be found on NCI's global filesystem ('gdata') 

Within each ERA5 project code, you will find the data organised by the following structure: 

  • Sub-collection
  • Dataset 
  • Product-type
  • Parameter
  • Year

For example, the full path of a file within the collection will take one of the following forms:

ERA5

/g/data/<project-code>/<sub-collection>/<dataset>/<product-type>/<parameter>/<year>/<file.nc>

ERA5-Land

/g/data/<project-code>/<sub-collection>/<product-type>/<parameter>/<year>/<file.nc>

ERA5-preliminary

/g/data/<project-code>/<sub-collection>/<dataset>/<product-type>/<parameter>/<year>/<file.nc>


ERA5-derived

/g/data/<project-code>/<sub-collection>/<dataset>/<version>/<product-type>/<parameter>/<file.nc>



The following table provides examples of the possible options within these fields:   

CategoryValue

ERA5 project code

e.g., 'rt52', 'zz93', 'uc16' (see table)
Sub-collection

era5

era5-1

era5-land

era5-derived

era5-preliminary

Dataset 

single-levels

pressure-levels

cems 

wfde5

Product Type

reanalysis*

monthly-averaged**

monthly-averaged-by-hour***

Parameter

NCI uses the parameter 'shortName'. Parameter lists can be found in the ECMWF ERA5 documentation:

ERA5

ERA5-Land

*Please see ERA5 Parameter Shortname Exceptions page for known exceptions.

Year

<YYYY> format

Filename

parameter_sub-collection_product-type_dataset_YYYYMMDD-YYYYMMDD.nc

parameter_sub-collection_dataset_version_YYYYMMDD-YYYYMMDD.nc  (era5-derived cesm data)

parameter_sub-collection_dataset_version_product-type.nc (era5-derived wfde5 data)

* High-resolution sub-daily reanalysis data, also referred to as 'oper' or 'wave' in the case of wave data. 

** Monthly-averaged data, also referred to as 'moda' or 'wamo' in the case of wave data. 

*** Monthly-averaged-by-hour, also referred to as 'mnth' or 'wamd' in the case of wave data. 

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