.. _Section_FileType_subsets_rad:


Radiation Subset
================

| **DOI:** https://doi.org/10.5439/1905834
| **File type abbreviation:** ``rad``

The radiation subset category contains variables extracted from the raw wrfout files related to radiation and radiative fluxes.
The data are on the raw model levels listed in :numref:`TableSubsetLevels`.

.. list-table:: Variables in the radiation subset files
    :name: TableSubsetRad
    :header-rows: 1
    :class: tight-table

    * - Variable Name
      - Description
    * - COSZEN
      - cosine of solar zenith angle
    * - SWUPT
      - upward shortwave radiation flux at top of model
    * - SWUPTC
      - clear-sky upward shortwave radiation flux at top of model
    * - SWDNT
      - downward shortwave radiation flux at top of model
    * - SWDNTC
      - clear-sky downward shortwave radiation flux at top of model
    * - SWUPB
      - upward shortwave radiation flux at surface
    * - SWUPBC
      - clear-sky upward shortwave radiation flux at surface
    * - SWDNB
      - downward shortwave radiation flux at surface
    * - SWDNBC
      - clear-sky downward shortwave radiation flux at surface
    * - LWUPT
      - upward longwave radiation flux at top of model
    * - LWUPTC
      - clear-sky upward longwave radiation flux at top of model
    * - LWDNT
      - downward longwave radiation flux at top of model
    * - LWDNTC
      - clear-sky downward longwave radiation flux at top of model
    * - LWUPB
      - upward longwave radiation flux at surface
    * - LWUPBC
      - clear-sky upward longwave radiation flux at surface
    * - LWDNB
      - downward longwave radiation flux at surface
    * - LWDNBC
      - clear-sky downward longwave radiation flux at surface
    * - ALBEDO
      - albedo
    * - ALBBCK
      - background albedo
    * - EMISS
      - surface emissivity