def METHOD_NAME(lat, lon, regions_dict=None):
    """Find area corresponding to input lat/lon coordinate
    Parameters
    ----------
    lat : float
        latitude
    lon : float
        longitude
    Returns
    -------
    str
        name of region
    """
    from pyaerocom.region import find_closest_region_coord
    reg = find_closest_region_coord(lat, lon)[0]
    if regions_dict is not None and reg in regions_dict:
        return regions_dict[reg]
    return reg