Controlling which variables unipost outputs
To output a field, the body of the control file needs to:
- contain an entry for the appropriate variable
- have output turned on for at least one level
Controlling which levels unipost outputs
To control which levels to output, the second line is used, where a "1" turns a level on and a "0" turns a level off.
- For isobaric output, 47 levels are possible from 2 to 1000 hPa (2, 5, 7, 10, 20, 30, 50, 70 mb and then every 25 from 75 mb to 1000 mb). Modifications to which isobaric levels are possible can be made in /UPPV4.1/src/unipost/CTLBLK.f.
- Modify the variable LSMDEF to change the number of pressure levels in your array (e.g. LSMDEF=47)
- Modify the SPLDEF array to change the values of pressure levels, i.e. (/200.,500....97500.,100000./)
- For model-level output, all model levels are possible, from the highest to lowest
- For soil levels, layers or levels depend on your LSM:
- Noah LSM soil layers are 0-10, 10-40, 40-100, and 100-200 cm.
- RUC LSM soil levels are 0, 1, 4, 10, 30, 60, 100, 160, and 300 cm. For the RUC LSM, it is necessary to turn on 5 additional levels in the wrf_cntrl.parm to output 9 instead of 4. (For the old RUC LSM, there are only 6 layers, and if using this, you will need to change RUC LSM from 9 to 6 in the WRFPOST.f routine).
- Pliem-Xiu LSM layers are 0-1 and 1-100 cm.
- For low, mid, and high cloud layers, the layers are ≥642 hPa, ≥350 hPa, and <350 hPa, respectively.
- For PBL layer averages, the levels correspond to 6 layers with a thickness of 30 hPa each.
- For flight levels, the levels are 30, 50, 80, 100, 305, 457, 610, 914, 1524, 1829, 2134, 2743, 3658, 4572, 6000 and 7010 m.
- For AGL radar reflectivity, the levels are 4000 and 1000 m.
- For surface or shelter-level output, only the first position of the line needs to be turned on.
For a list of available fields for GRIB1, see the GRIB1 Table
