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titleHow to change the code to reduce gravity wave drag (Click click here to expand)

 Edit the source code to half the gravity wave drag coefficient

File: ifs/phys_ec/sugwd.F90, change:

Code Block
Line 108: !  Revised gwd parameter values
Line 109: GKDRAG =0.15_JPRB

to:

Code Block
Line 108: !  Revised gwd parameter values
Line 109: GKDRAG = 0.075_JPRB   !  half GWD coefficient: 0.15_JPRB

  • Increase the precipitation auto conversion rate

    Expand
    titleHow to change the code (click here to expand…)

    Edit the source code to increase the auto conversion rate by 20%

    File: ifs/phys_ec/sucldp.F90, change:

    Code Block
    line 123: RKCONV=1._JPRB/6000._JPRB   ! 1/autoconversion time scale (s)

    to:

    Code Block
    line 123: ! RKCONV=1._JPRB/6000._JPRB   ! 1/autoconversion time scale (s)
line 124: RKCONV=1.2_JPRB/6000._JPRB    ! default scaled by 20%: 1/autoconversion time scale (s)

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