4. the ratio of the value obtained in 2. to the value obtained in 3. is applied to the value
obtained in 1.
A similar procedure for extrapolating to heights above the observed profile is applied to
heights below the lowest observed profile height.
7.11Using Measured Mixing Heights
If measured mixing heights are available, then they are treated in the following manner: If
L>0 (SBL) the measured mixing height is defined aszie and it is treated the same as a calculated
mechanical mixing height (smoothed as explained in Section 3.4.2). IfL<0 (CBL) the measured
mixing height is defined aszic, and zie is calculated from eq. (24), smoothed, then proceed as if
bothzic and the smoothed zim had been calculated values.
If a user has “measured” mixing heights available (and chooses to use them), AERMET
defaults to substituting calculated mixing heights for missing measurements and a message is
written that a substitution has occurred. If the user elects to substitute calculations for missing
measurements, AERMET will print out a message to the message file for each hour that a
substitution has occurred.
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Modeling and Its Application. De Wispelaire, V. C., Schiermeier, F. A., and Grillani, N. V,
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