FX_VARIABLES = [
    'areacella',
    'areacello',
    'areacellr',
    'basin',
    'clayfrac',
    'deptho',
    'fldcapacity',
    'hfgeoubed',
    'ksat',
    'lithk',
    'mrsofc',
    'orog',
    'rlu',
    'rootd',
    'rsd',
    'rsu',
    'sandfrac',
    'sftgif',
    'sftgrf',
    'sftlf',
    'sftof',
    'siltfrac',
    'thkcello',
    'topg',
    'volcello',
    'zfull'
]