The dataset is covering the period from 1 Nov 2015 until present.

MARS

If you have access to ECMWF systems you can retrieve test data from MARS archive using these keywords:

class=mc
expver=0067

WebAPI service

If you don't have access to ECMWF computers but would still like to access a large subset of test data to validate your systems you can use ECMWF WebAPI service.

Examples

Total aerosol optical depth at 550 nm in NetCDF format, only European domain, all the available steps, November 2015

#!/usr/bin/env python
from ecmwfapi import ECMWFDataServer
server = ECMWFDataServer()
server.retrieve({
    "dataset": "cams_nrealtime_test",
    "stream": "oper",
    "type": "fc",
    "date": "20151101/to/20151130",
    "time": "00",    
    "step":"0/to/120/by/1",
    "levtype":"sfc",
    "param" : "aod550",       # see parameter table at http://macc.copernicus-atmosphere.eu/oper_info/global_nrt_data_access/ftp/20150911_cams_upgrade/
    "grid": "0.4/0.4",        # 0.4˘ x 0.4˘ regular lat-lon grid
    "area": "70/-35/35/60",   # N/E/S/W area boundaries
    "format": "netcdf",
    "target": "/tmp/cams_nrealtime_test.grib"
})

ECPDS dissemination

If everything else fails ...

... you can always contact us by using this contact form and specify:

• which parameters you require
• which time period
• which geographical area
• which data format