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For this use case, you need to retrieve in grib format both temperature (t) and Specific humidity (q) for each model level. Besides, you need both geopotential (z) and logarithm of surface pressure (lnsp) for model level = 1.

Children Display

Examples:

  • tq_ml_20151008_00.grib
    • No Format
      retrieve, 
  date= 20150801, 
  class = od,
  time= 0, 
  stream = oper,
  levtype= ml, 
  grid= 1.5/1.5,
  type= an,
  area= global,
  param= t/q, 
  levelist= all,
  target="tq_ml_20150801_00.grib"
  • zlnsp_ml_20151008_00.grib
    • No Format
      retrieve,
  date= 20150801, 
  class = od,
  time= 0, 
  stream = oper,
  levtype= ml, 
  grid= 1.5/1.5,
  type= an,
  param=lnsp,
  levelist=1,
  target="zlnsp_ml_20151008_00.grib"

retrieve,
  type= an,
  area= global,
  param=z, 
  levelist=1,
  target="zlnsp_ml_20151008_00.grib"
No Format
python compute_geopotential_on_ml.py tq_ml_20151008_00.grib zlnsp_ml_20151008_00.grib
python compute_geopotential_on_ml.py tq_ml_20151008_00.grib zlnsp_ml_20151008_00.grib -o my_grib.grib