10.4.1_peseiGFS_025bugfixes+enhancementsdevrelease-10release-10.4.1scaling-bug
Last change
on this file since 5635973 was
92fab65,
checked in by Ignacio Pisso <ip@…>, 5 years ago
|
add SPDX-License-Identifier to all .f90 files
|
-
Property mode set to
100644
|
File size:
2.6 KB
|
Rev | Line | |
---|
[92fab65] | 1 | ! SPDX-FileCopyrightText: FLEXPART 1998-2019, see flexpart_license.txt |
---|
| 2 | ! SPDX-License-Identifier: GPL-3.0-or-later |
---|
[332fbbd] | 3 | |
---|
[e200b7a] | 4 | function psih (z,l) |
---|
| 5 | |
---|
| 6 | !***************************************************************************** |
---|
| 7 | ! * |
---|
| 8 | ! Calculation of the stability correction term * |
---|
| 9 | ! * |
---|
| 10 | ! AUTHOR: Matthias Langer, adapted by Andreas Stohl (6 August 1993) * |
---|
| 11 | ! Update: G. Wotawa, 11 October 1994 * |
---|
| 12 | ! * |
---|
| 13 | ! Literature: * |
---|
| 14 | ! [1] C.A.Paulson (1970), A Mathematical Representation of Wind Speed * |
---|
| 15 | ! and Temperature Profiles in the Unstable Atmospheric Surface * |
---|
| 16 | ! Layer. J.Appl.Met.,Vol.9.(1970), pp.857-861. * |
---|
| 17 | ! * |
---|
| 18 | ! [2] A.C.M. Beljaars, A.A.M. Holtslag (1991), Flux Parameterization over* |
---|
| 19 | ! Land Surfaces for Atmospheric Models. J.Appl.Met. Vol. 30,pp 327-* |
---|
| 20 | ! 341 * |
---|
| 21 | ! * |
---|
| 22 | ! Variables: * |
---|
| 23 | ! L = Monin-Obukhov-length [m] * |
---|
| 24 | ! z = height [m] * |
---|
| 25 | ! zeta = auxiliary variable * |
---|
| 26 | ! * |
---|
| 27 | ! Constants: * |
---|
| 28 | ! eps = 1.2E-38, SUN-underflow: to avoid division by zero errors * |
---|
| 29 | ! * |
---|
| 30 | !***************************************************************************** |
---|
| 31 | |
---|
| 32 | use par_mod |
---|
| 33 | |
---|
| 34 | implicit none |
---|
| 35 | |
---|
| 36 | real :: psih,x,z,zeta,l |
---|
| 37 | real,parameter :: a=1.,b=0.667,c=5.,d=0.35,eps=1.e-20 |
---|
| 38 | |
---|
| 39 | if ((l.ge.0).and.(l.lt.eps)) then |
---|
| 40 | l=eps |
---|
| 41 | else if ((l.lt.0).and.(l.gt.(-1.*eps))) then |
---|
| 42 | l=-1.*eps |
---|
| 43 | endif |
---|
| 44 | |
---|
| 45 | if ((log10(z)-log10(abs(l))).lt.log10(eps)) then |
---|
| 46 | psih=0. |
---|
| 47 | else |
---|
| 48 | zeta=z/l |
---|
| 49 | if (zeta.gt.0.) then |
---|
| 50 | psih = - (1.+0.667*a*zeta)**(1.5) - b*(zeta-c/d)*exp(-d*zeta) & |
---|
| 51 | - b*c/d + 1. |
---|
| 52 | else |
---|
| 53 | x=(1.-16.*zeta)**(.25) |
---|
| 54 | psih=2.*log((1.+x*x)/2.) |
---|
| 55 | end if |
---|
| 56 | end if |
---|
| 57 | |
---|
| 58 | end function psih |
---|
Note: See
TracBrowser
for help on using the repository browser.