import cdsapi

c = cdsapi.Client()

c.retrieve(
    'seasonal-postprocessed-single-levels',
    {
        'format':'grib',
        'originating_centre':'ecmwf',
        'system':'4',
        'variable':'2m_temperature_anomaly',
        'product_type':'monthly_mean',
        'year':'2017',
        'month':'09',
        'leadtime_month':'1'
    },
    '../archives/seas_for/21_seas_for-seasonal-postprocessed-single-levels.grib')
