The dataset is covering the period from 1 March 2018 until present.
MARS
If you have access to ECMWF systems you can retrieve test data from MARS archive using keywords:
class=mc expver=9601 stream=gfas type=ga
WebAPI service
If you don't have access to ECMWF computers but would still like to access a large subset of test data you can use ECMWF WebAPI service.
Read documentation and see brief request syntax of the ECMWF WebAPI service.
If you haven't done it yet you will need to create an ECMWF web account and accept the data licence.
Example
Altitude of plume top in NetCDF format, only European domain, 10 dates
NetCDF
#!/usr/bin/env python from ecmwfapi import ECMWFDataServer server = ECMWFDataServer() server.retrieve({ "class": "mc", "dataset": "cams_gfas", "date": "2018-03-01/to/2018-03-10", "expver": "9601", "levtype": "sfc", "param": "120.210", # see parameter codes at http://apps.ecmwf.int/codes/grib/param-db/ "step": "0-24", "stream": "gfas", "time": "00:00:00", "type": "ga", "target": "atp.nc", "format": "netcdf", "area": "70/-35/35/60" # N/E/S/W area boundaries })
FTP dissemination
The test dataset is available through ECPDS FTP dissemination systems in this directory:
/DATA/CAMS_TMP/CAMS_GFAS
You can use your normal FTP account to access the data.
If everything else fails ...
... you can always contact us by using this contact form putting "Request for CAMS global test dataset" as a subject and specify:
- which parameters and levels
- which time period
- forecast step / time frequency
- which geographical area
- which data format you require