8.8. Meteorology Files

8.8.1. METLIST: List of meteorology files
8.8.2. RADLIST: List of meteorology files containing radiation data

The directories where the meteorology files should be stored are listed in Table 8.7, “Meteorology Input File Locations”. The table also lists the programs that use each input file.

The five meteorology files that SMOKE needs for biogenic emissions adjustments, calculation of on-road mobile source emission, and plume rise calculations are GRID_CRO_2D, GRID_CRO_3D, MET_CRO_2D, MET_CRO_3D, and MET_DOT_3D. The files are usually based on MM5 data but must be specially formatted by a postprocessor like MCIP or MCPL.

GRID_CRO_2D - 2-D grid parameters file

GRID_CRO_3D - 3-D grid parameters file

MET_CRO_2D - 2-D cross-point data file (surface meteorology data)

MET_CRO_3D - 3-D cross-point data file (layered meteorology data)

MET_DOT_3D - 3-D dot-point data file (layered meteorology data)

Table 8.76. Meteorology variables used by program

File name Program Variable Description Notes
GRID_CRO_2D Tmpbeis3 LAT grid cell latitude (degrees)  
    LON grid cell longitude (degrees)  
  Tmpbio LAT grid cell latitude (degrees) only used if BG_CLOUD_TYPE = 1
    LON grid cell longitude (degrees) only used if BG_CLOUD_TYPE = 1
GRID_CRO_3D Laypoint X3HT0F height of layer face above ground (m) only used when layer structure is static
    X3HT0M height of layer middle above ground (m) only used when layer structure is static
MET_CRO_2D Laypoint HFX sensible heat flux (watts/m2)  
    PBL PBL height (m)  
    PRSFC surface pressure (Pascals)  
    TEMP1P5 temperature at 1.5 m (Kelvins)  
    USTAR average friction velocity (m/s)  
  Premobl TEMPG ground temperature (Kelvins) variable name is set by TVARNAME, all Premobl variables must be in same file
  Tmpbeis3 RGRND solar radiation reaching surface (watts/m2) variable name is set by RAD_VAR, actual file used is determined by BIOMET_SAME
  Tmpbio PRSFC surface pressure (Pascals) only used if BG_CLOUD_TYPE is not 1, variable name is set by PRES_VAR
    RGRND solar radiation reaching surface (watts/m2) only used if BG_CLOUD_TYPE = 1, variable name is set by RAD_VAR, actual file used is determined by BIOMET_SAME
MET_CRO_3D Laypoint DENS total air density (kg/m3)  
    PRES pressure (Pascals)  
    QV water vapor mixing ratio (kg/kg)  
    TA air temperature (Kelvins)  
    ZF full-layer height above ground (m)  
    ZH mid-layer height above ground (m)  
  Premobl PRES pressure (Pascals) all Premobl variables must be in same file
    QV water vapor mixing ratio (kg/kg) all Premobl variables must be in same file
  Tmpbeis3 PRES pressure (Pascals) variable name is set by PRES_VAR
    RC convective rainfall (cm) only used if BEIS_VERSION = 3.13, variable name is set by RC_VAR
    RN nonconvective rainfall (cm) only used if BEIS_VERSION = 3.13, variable name is set by RN_VAR
    SLTYP soil texture type by USDA category only used if BEIS_VERSION = 3.13 and PX_VERSION = Y, variable name is set by ISLTYP_VAR
    SOIM1 volumetric soil moisture in top centimeter (m3/m3) only used if BEIS_VERSION = 3.13 and PX_VERSION = Y, variable name is set by SOILM_VAR
    SOIT1 soil temperature in top centimeter (Kelvins) only used if BEIS_VERSION = 3.13 and PX_VERSION = Y, variable name is set by SOILT_VAR
    TA air temperature (Kelvins) variable name is set by TMPR_VAR, actual file opened depends on MET_FILE1
  Tmpbio TA air temperature (Kelvins) variable name is set by TMPR_VAR, actual file opened depends on MET_FILE1/METLIST
MET_DOT_3D Laypoint UWIND U-component of wind (m/s)  
    VWIND V-component of wind (m/s)  

8.8.1. METLIST: List of meteorology files

The METLIST file is used to provide the file names of available meteorology files to the Tmpbio and Premobl programs. Premobl runs once for the entire modeling episode, and therefore needs all of the files at one time. If Tmpbio is being run for a period longer than the individual meteorology files, the METLIST file is used to combine multiple meteorology files so that Tmpbio can find the data it needs. The meteorology files provided to Premobl and Tmpbio must cover the desired episode and contain the requested variables. In the example SMOKE scripts, this file is generated automatically. The format of this file is shown in Table 8.77, “Format for METLIST.

Table 8.77. Format for METLIST

Line Position Description
1+ A Full name and path of meteorology file