# structured_archive Section

This section configures **structured grid archives**, including **zones**, **conventions**, and **output flags**.

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 | **Parameter** | **Description** |
 |---------------|----------------|
 | `OnOffFlag` | Flag to enable/disable structured archive (`TRUE`, `FALSE`). |
 | `zone` | Definition of structured grid (`AUTO`, `FILE`, `SYMPHO`). |
 | `overwrite_append_flag` | Flag to overwrite or append structured archives (`APPEND`, `OVERWRITE`). |
 | `archive_convention` | Naming convention for structured archives (default: `YYYY.MM`). |
 | `start` | Start time for structured archives (default: `0.0 days`). |
 | `interval` | Interval for structured archives (default: `10800.0 s`). |
 | `archive_max_precision` | Maximum precision for structured archives (`2`, `4`, `8` bytes). |
 | `archive_start` | Start time for structured archives (default: `0.0 days`). |
 | `archive_interval` | Interval for structured archives (default: `10800.0 s`). |
 | `surface_elevation` | Flag to include surface elevation in structured archives (`TRUE`, `FALSE`). |
 | `surface_elevation_extrema` | Flag to include surface elevation extrema in structured archives (`TRUE`, `FALSE`). |
 | `mean_kinetic_energy2D` | Flag to include mean kinetic energy (2D) in structured archives (`TRUE`, `FALSE`). |
 | `barotropic_currents` | Flag to include barotropic currents in structured archives (`TRUE`, `FALSE`). |
 | `horizontal_diffusion2D` | Flag to include horizontal diffusion (2D) in structured archives (`TRUE`, `FALSE`). |
 | `horizontal_advection2D` | Flag to include horizontal advection (2D) in structured archives (`TRUE`, `FALSE`). |
 | `transport2D` | Flag to include transport (2D) in structured archives (`TRUE`, `FALSE`). |
 | `divergence2D` | Flag to include divergence (2D) in structured archives (`TRUE`, `FALSE`). |
 | `friction_coefficient` | Flag to include friction coefficient in structured archives (`TRUE`, `FALSE`). |
 | `bottom_rugosity` | Flag to include bottom rugosity in structured archives (`TRUE`, `FALSE`). |
 | `atmospheric_surface_pressure` | Flag to include atmospheric surface pressure in structured archives (`TRUE`, `FALSE`). |
 | `wind_stress` | Flag to include wind stress in structured archives (`TRUE`, `FALSE`). |
 | `IB-departure` | Flag to include inverse barometer departure in structured archives (`TRUE`, `FALSE`). |
 | `horizontal_currents` | Flag to include horizontal currents in structured archives (`TRUE`, `FALSE`). |
 | `vertical_velocity` | Flag to include vertical velocity in structured archives (`TRUE`, `FALSE`). |
 | `temperature` | Flag to include temperature in structured archives (`TRUE`, `FALSE`). |
 | `salinity` | Flag to include salinity in structured archives (`TRUE`, `FALSE`). |
 | `density` | Flag to include density in structured archives (`TRUE`, `FALSE`). |
 | `horizontal_diffusion` | Flag to include horizontal diffusion in structured archives (`TRUE`, `FALSE`). |
 | `horizontal_advection` | Flag to include horizontal advection in structured archives (`TRUE`, `FALSE`). |
 | `pressure_gradient` | Flag to include pressure gradient in structured archives (`TRUE`, `FALSE`). |
 | `lateral_mixing` | Flag to include lateral mixing in structured archives (`TRUE`, `FALSE`). |
 | `tracer_2d` | Flag to include 2D tracer in structured archives (`TRUE`, `FALSE`). |
 | `radiation_stress` | Flag to include radiation stress in structured archives (`TRUE`, `FALSE`). |
 | `verbose_level` | Verbosity level for structured archives (`NONE`, `MINIMAL`, `DEBUG`). |