Initializing MPAS-A with Near-Real-Time ERA5 Data

[wxEpsilon]

Hi everyone,

I am conducting experiments to evaluate the forecast skill of MPAS-A for several heavy precipitation events in 2025/07. I know that era5_to_int.py is a useful tool for converting ERA5 data archived at NCAR into intermediate files for MPAS. However, the most up-to-date ERA5 data in the NCAR RDA archive is only available through May 2025.

So I attempted to download the required variables directly from CDSAPI, but era5_to_int.py encountered errors when processing them.

I wonder if there is any script or workflow for downloading near-real-time ERA5 data and converting it into the same format as the RDA archive for use with MPAS?

Any helps would be greatly appreciated!

 

[Ming Chen]

Please see the attached python script that can be used to download ERA5 data from CDSAPI. Note that this script is provided by a user and some modification may be needed. It downloads data in GRIB format, which can be processed by WPS UNGRIB program.

Please try and hope it works for you.