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module cv30_param_m |
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|
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! From LMDZ4/libf/phylmd/cvparam3.h, version 1.1.1.1, 2004/05/19 12:53:09 |
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|
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! Set parameters for Emanuel convection scheme. Includes |
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! microphysical parameters and parameters that control the rate of |
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! approach to quasi-equilibrium. |
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|
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USE dimphy, ONLY: klev |
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|
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implicit none |
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|
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integer, parameter:: minorig = 1 |
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! first level of convection (limit levels for convection) |
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|
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integer, parameter:: nl = klev - 1 |
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! Limit for convection. The maximum number of levels to which |
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! convection can penetrate, plus 1. We should have: |
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! 6 <= nl <= KLEV - 1 |
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! (because of locate in cv30_feed). |
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|
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real, parameter:: sigd = 0.01 |
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! fractional area covered by unsaturated downdraft |
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! \sigma_d in Emanuel (1991 928) |
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|
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real, parameter:: dtcrit = - 2. |
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! Critical buoyancy (K) used to adjust the approach to |
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! quasi-equilibrium. It must be < 0. |
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|
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real beta, alpha |
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! Parameters that control the rate of approach to quasi-equilibrium |
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! (their standard values are 1. and 0.96, respectively) (beta must |
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! be less than or equal to 1). |
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|
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private klev |
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|
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contains |
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|
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SUBROUTINE cv30_param |
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|
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! From LMDZ4/libf/phylmd/cv3_routines.F, version 1.5, 2005/07/11 15:20:02 |
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|
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use comconst, only: dtphys |
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|
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! Local: |
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|
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real, parameter:: tau = 8000. |
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! characteristic timescale used to compute alpha and beta |
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|
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!------------------------------------------------------------ |
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|
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beta = 1. - dtphys / tau |
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|
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alpha = 1.5E-3 * dtphys / tau * 1.5 |
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! factor 1.5: increase alpha to compensate W decrease |
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|
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end SUBROUTINE cv30_param |
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|
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end module cv30_param_m |