# ``total_dissolved_nitrogen``
## Properties
:dimensions: N_PROF, N_LEVELS
:dtype: float64
## Default Attributes
| Attribute | Value |
|-----|-----|
|``whp_name`` | ``TDN`` |
|``whp_unit`` | ``UMOL/KG`` |
|``units`` | ``umol/kg`` |
|``C_format`` | ``%9.2f`` |
|``C_format_source`` | ``database`` |
## Description
Total dissolved nitrogen, includes organic and inorganic