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This parameter has to be either the height or the geopotential (z) of the levels. If geopotential is specified it is converted into metres by Metview for Vapor. The default value is z.
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Please note that neither the height nor the geopotential of model levels are archived in MARS. It means that for model level data either of these fields has to be computed for Layered mode. These computations can be done with VAPOR Prepare by simply specifying z for Vapor Elevation Param. The computations can only be carried out if the input data contains temperature (t) and specific humidity (q) on model levels and geopotential (z) and logarithm of surface pressure (lnsp) on the bottommost model level. |
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