dataset to retrieve: cams-europe-air-quality-forecasts
request: {        'variable': 'nitrogen_dioxide',        'model': 'ensemble',        'level': '0',        'date': '2021-06-16/2021-06-16',        'type': 'analysis',        'time': '00:00',        'leadtime_hour': '0',        'format': 'netcdf',        'area': [            59.96, 10.66, 59.87,            10.9,        ],    }
output filename: download.nc