An update of the mars keys is required to be able to support some new products within the MARS catalogue that underlies the Emergency Warning Data Store fire danger indices datasets.
Preparations are underway to migrate the data into a new structure. While this work is on going, there will no longer be updates to this dataset until further notice.
The dataset will remain available until the ingestion of the data into the new tree structure is complete.
Data values will be identical to data that has previously downloaded.
The internal structure of MARS is changing. While this is abstract to users of the CDS, it does require removing the current data in order to ingest it with a different design.
There will also be changes to some of the keys that you see within the Grib files.
Timespan is a new key, which is not used within the Fire grib's.
Fire outputs of the GEFF model use the localtime design for creating the outputs, which reflects the number of forecasts and fields used as inputs to create the forcing fields
One difference is the origin and the forcing field which have changed slightly, to indicate the forcing used in the model.
This will also be relevant to the IFS cycle used in the operational GEFF Output, Seasonal outputs and the future ERA6 outputs.
This is the output of grib_ls -m and grib_ls for the new and old structures.
domain expver class type stream model origin levtype date time step param g 0001 gw fc oper geff ecmf_ea sfc 19400103 0000 12 260540 edition centre date time dataType gridType typeOfLevel level shortName packingType 2 ecmf 19400103 1200 fc reduced_gg surface 0 fwinx grid_simple |
domain expver class type stream model levtype date time step param forcing timespan g 9999 gw fc oper geff sfc 19400103 0000 12 260540 era5 none edition centre date time dataType gridType typeOfLevel level shortName model modelVersion packingType 2 ecmf 19400103 1200 fc reduced_gg surface 0 fwinx geff v4.0 grid_simple |
The changes are necessary to support new grib encoding as part of the Grib2 Migration work as well as supporting new parameters that are not yet available in MARS.
Data is already being prepared, we estimate it will be a few weeks before we have retrieved all the data out of MARS.
Once data has been retrieved, the existing data will be removed. At this point the dataset pages will be made unavailable.
At that point, the configuration will be updated and new data will begin to be archived almost immediately.
EWDS pages will be available once again, however the data will not be visible to the EWDS immediately and may take a few days for all previous data to reappear within the EWDS.