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SCAM History variables and Heat and Water Budgets

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dhartm@...
SCAM History variables and Heat and Water Budgets

Can anyone explain how to formulate  proper heat, water and ice budgets with the SCAM 5.3 CESM1.2.2?  A list is given with brief decriptions, but I cannot find an exact definition of what these terms include.  For example PTTEND is the same numbers as ZMDT.  The first is supposed to be total physics T tendency and the second is supposed to be Zhang-McFarlane T tendency.  What does DTCOND (moist processes) include?  I've spent some time trying to reverse-engineer what these things are, but that is unsatisfying.

Where in the code can you see how these things are computed?

 

Prof. Dennis L Hartmann
University of Washington

olson

  Dennis,

    The attached are summaries of heat, specific humidity, cloud ice/water
 budgets for CAM5.  In their crude form you may find them almost as unsatisfying.
 The budgets are pretty much complete with the caveat that budgets tend to be
 a moving target from model version to model version.  The attached have budgets
 for CAM3 and CAM5.  Terms in [] are post-processed terms derived from existing
 model history terms.

Jerry Olson

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