.. _Section_FileType_subsets_pbl:


Boundary Layer Subset
=====================

| **DOI:** https://doi.org/10.5439/1905829
| **File type abbreviation:** ``pbl``

The planetary boundary-layer subset category contains variables extracted from the raw wrfout files related to the boundary layer.
The data are on the raw model levels listed in :numref:`TableSubsetLevels`.

.. list-table:: Variables in the boundary-layer subset files
    :name: TableSubsetPbl
    :header-rows: 1
    :class: tight-table

    * - Variable Name
      - Description
    * - UST
      - u* from similarity theory
    * - PBLH
      - planetary boundary layer height
    * - TKE
      - turbulent kinetic energy
    * - XKMV
      - vertical eddy viscosity
    * - XKMH
      - horizontal eddy viscosity
    * - XKHV
      - vertical eddy diffusivity of heat
    * - XKHH
      - horizontal eddy diffusivity of heat
    * - TKE_PBL
      - turbulent kinetic energy from PBL scheme (D1 and D2 only)
    * - EL_PBL
      - length scale from PBL parameterization (D1 and D2 only)