The namelist parameters listed in Table 5 are for the prescribed ice option as used in AMIP and F compset (standalone CAM) runs 6.
| Varible | Type | Default Value | Description |
| prescribed_ice | Logical | .false. | Flag to turn on prescribed ice |
| prescribed_ice_fill | Logical | .false. | Flag to turn fill option |
| stream_year_first | Integer | 1 | First year of prescribed ice data |
| stream_year_last | Integer | 1 | Last year of prescribed ice data |
| model_year_align | Integer | 1 | Year in model run that aligns with stream_year_first |
| stream_domfilename | Character | Prescribed ice stream data file | |
| stream_fldfilename | Character | Prescribed ice stream data file | |
| stream_fldvarname | Character | ice_cov | Ice fraction field name |