Static-Stability Practice

0) Given the plotted sounding.  View or print it.

1) On your own, determine the Lapse-rate Name for each layer from the sounding plotted above. 
     Choices:  subadiabatic , adiabaticsuperadiabatic .

     If you are uncertain, then review Chapter 5 Atmospheric Stability, section 5.7.1.2, Table 5-1.
     https://www.eoas.ubc.ca/books/Practical_Meteorology/prmet102/Ch05-stability-v102b.pdf

    After you have first tried it on your own, then compare to the answers.

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2) View or print the original  plotted sounding again.
    On your own, determine the Static Stability vs. height from this Sounding.
    Use the Parcel (Apex) Method to include the non-local effects. 

    If you are uncertain, then review Chapter 5 Atmospheric Stability, section 5.7.1.1.
     https://www.eoas.ubc.ca/books/Practical_Meteorology/prmet102/Ch05-stability-v102b.pdf

    Choices:  stable , neutral , unstable .

   After you have first tried it on your own, then compare to the answers.

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3) Note that for determining whether the flow will become turbulent or not, you must always use the parcel (apex) method to include the non-local effects of unstable air.  By comparing your previous two answers, you can see that the layer lapse-rates  give an incorrect determination of static stability and turbulence.


Copyright 2019 by Roland Stull
University of British Columbia