The dataset is covering the period from 2 Oct 2016 until 21 Nov 2016 (status on 5 Dec 2016) ... present.

MARS

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

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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.

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#!/usr/bin/env python
from ecmwfapi import ECMWFDataServer
server = ECMWFDataServer()

server.retrieve({
    "dataset":   "cams_esuite",
    "stream":    "oper",
    "type":      "fc",
    "date":      "20161015/to/20161115",
    "time":      "00",    
    "step":      "0/to/23/by/1",
    "levtype":   "sfc",
    "format":    "netcdf",
    "param" :    "aod550",         # see parameter table at http://atmosphere.copernicus.eu/ftp-access-global-data
    "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
    "target":    "/tmp/cams_test_201611.nc"
})

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FTP dissemination

The test dataset is available through operational ECPDS FTP dissemination .systems in these directories:

/DATA/CAMS_NREALTIME_TEST
/DATA/CAMS_NREALTIME_BC_TEST

You can use your normal FTP account to access the data. The list of parameters is the same as in the current global data stream but at the higher 0.4 deg horizontal resolutiondata streams.

If everything else fails ...

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