import cdsapi

dataset = "reanalysis-era5-single-levels"
request = {
    "product_type": ["reanalysis"],
    "variable": ["vertical_integral_of_mass_of_atmosphere"],
    "year": ["2023"],
    "month": ["03"],
    "day": ["04"],
    "time": ["12:00", "13:00"],
    "data_format": "grib",
    "download_format": "unarchived",
    "area": [34, 119, 33, 120]
}

client = cdsapi.Client()
client.retrieve(dataset, request).download()
