/[lmdze]/trunk/phylmd/ozonecm.f
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Revision 266 - (hide annotations)
Thu Apr 19 17:54:55 2018 UTC (6 years, 1 month ago) by guez
File size: 3265 byte(s) 
Define macros of the preprocessor CPP_IIM, CPP_JJM, CPP_LLM so we can
control the resolution from the compilation command, and automate
compilation for several resolutions.

In module yoethf_m, transform variables into named constants. So we do
not need procedure yoethf any longer.

Bug fix in program test_inter_barxy, missing calls to fyhyp and fxhyp,
and definition of rlatu.

Remove variable iecri of module conf_gcm_m. The files dyn_hist*.nc are
written every time step. We are simplifying the output system, pending
replacement by a whole new system.

Modify possible value of vert_sampling from "param" to
"strato_custom", following LMDZ. Default values of corresponding
namelist variables are now the values used for LMDZ CMIP6.
1 guez 22 module ozonecm_m
2 guez 3
3 guez 22 IMPLICIT NONE
4 guez 3
5 guez 22 contains
6 guez 3
7 guez 22 function ozonecm(rjour, paprs)
8    
9     ! From phylmd/ozonecm.F, version 1.3 2005/06/06 13:16:33
10    
11     ! The ozone climatology is based on an analytic formula which fits the
12     ! Krueger and Mintzner (1976) profile, as well as the variations with
13     ! altitude and latitude of the maximum ozone concentrations and the total
14     ! column ozone concentration of Keating and Young (1986). The analytic
15     ! formula have been established by J.-F. Royer (CRNM, Meteo France), who
16     ! also provided us the code.
17    
18     ! A. J. Krueger and R. A. Minzner, A Mid-Latitude Ozone Model for the
19 guez 212 ! 1976 U. S. Standard Atmosphere, J. Geophys. Res., 81, 4477, (1976).
20 guez 22
21     ! Keating, G. M. and D. F. Young, 1985: Interim reference models for the
22     ! middle atmosphere, Handbook for MAP, vol. 16, 205-229.
23    
24 guez 265 use dimensions, only: llm
25 guez 36 use nr_util, only: assert, pi
26 guez 22 use phyetat0_m, only: rlat
27    
28     REAL, INTENT (IN) :: rjour
29 guez 118
30 guez 266 REAL, INTENT (IN) :: paprs(:, :) ! (klon, llm + 1)
31 guez 118 ! pression pour chaque inter-couche, en Pa
32 guez 22
33 guez 266 REAL ozonecm(size(paprs, 1), llm) ! (klon, llm)
34 guez 22 ! "ozonecm(j, k)" is the column-density of ozone in cell "(j, k)", that is
35     ! between interface "k" and interface "k + 1", in kDU.
36    
37 guez 98 ! Local:
38 guez 22
39 guez 118 REAL tozon ! equivalent pressure of ozone above interface "k", in Pa
40 guez 22 INTEGER i, k
41    
42 guez 266 REAL field(llm + 1)
43 guez 118 ! "field(k)" is the column-density of ozone between interface
44 guez 22 ! "k" and the top of the atmosphere (interface "llm + 1"), in kDU.
45    
46 guez 118 real, PARAMETER:: ps = 101325.
47     REAL, parameter:: an = 360., zo3q3 = 4E-8
48     real, parameter:: zo3a3 = zo3q3 / ps / 2.
49     REAL, parameter:: dobson_unit = 2.1415E-5 ! in kg m-2
50     REAL gms, slat, slat2, sint, cost, ppm, a
51     REAL asec, bsec, aprim
52 guez 22
53     !----------------------------------------------------------
54    
55 guez 266 call assert(size(paprs, 2) == llm + 1, "ozonecm")
56 guez 22
57 guez 118 sint = sin(2 * pi * (rjour + 15.) / an)
58     cost = cos(2 * pi * (rjour + 15.) / an)
59     field(llm + 1) = 0.
60    
61 guez 266 DO i = 1, size(paprs, 1)
62 guez 118 slat = sin(pi / 180. * rlat(i))
63     slat2 = slat * slat
64     gms = 0.0531 + sint * (- 0.001595 + 0.009443 * slat) + cost &
65     * (- 0.001344 - 0.00346 * slat) + slat2 * (0.056222 + slat2 &
66     * (- 0.037609 + 0.012248 * sint + 0.00521 * cost + 0.00889 &
67     * slat)) - zo3q3 * ps
68     ppm = 800. - 500. * slat2 - 150. * cost * slat
69     bsec = 2650. + 5000. * slat2
70     a = 4. * bsec**1.5 * ppm**1.5 * (1. + (bsec / ps)**1.5) &
71     / (bsec**1.5 + ppm**1.5)**2
72     aprim = max(0., (2.666666 * (1.74E-5 - 7.5E-6 * slat2 &
73     - 1.7E-6 * cost * slat) * ppm - a * gms) / (1. - a))
74     asec = max(0., (gms - aprim) * (1. + (bsec / ps)**1.5))
75     aprim = gms - asec / (1. + (bsec / ps)**1.5)
76    
77     DO k = 1, llm
78     tozon = aprim / (1. + 3. * (ppm / paprs(i, k))**2) &
79     + asec / (1. + (bsec / paprs(i, k))**1.5) &
80     + zo3a3 * paprs(i, k) * paprs(i, k)
81 guez 22 ! Convert from Pa to kDU:
82 guez 118 field(k) = tozon / 9.81 / dobson_unit / 1e3
83 guez 22 END DO
84 guez 118
85     forall (k = 1: llm) ozonecm(i, k) = field(k) - field(k + 1)
86 guez 22 END DO
87    
88 guez 118 ozonecm = max(ozonecm, 1e-12)
89 guez 22
90     END function ozonecm
91    
92     end module ozonecm_m
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