source: trunk/LMDZ.COMMON/libf/evolution/stopping_crit_mod.F90 @ 3428

Last change on this file since 3428 was 3339, checked in by jbclement, 6 months ago

PEM:
Correction of the way sublimating ice is identified at the beginning of the PEM + some updates for the default variables and the display of information.
JBC
File size: 7.0 KB
Line 
1MODULE stopping_crit_mod
2
3implicit none
4
5!=======================================================================
6contains
7!=======================================================================
8
9!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
10!!!
11!!! Purpose: Criterions to check if the PEM needs to call the PCM
12!!! Author: RV & LL, 02/2023
13!!!
14!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
15
16SUBROUTINE stopping_crit_h2o_ice(cell_area,h2oice_ini_surf,ini_h2oice_sublim,h2o_ice,stopPEM,ngrid)
17
18use time_evol_mod, only: h2o_ice_crit
19use comslope_mod,  only: subslope_dist, nslope
20
21implicit none
22
23!=======================================================================
24!
25! Routine to check if the h2o ice criterion to stop the PEM is reached
26!
27!=======================================================================
28! Inputs
29!-------
30integer,                          intent(in) :: ngrid             ! # of physical grid points
31real,    dimension(ngrid),        intent(in) :: cell_area         ! Area of the cells
32real,    dimension(ngrid,nslope), intent(in) :: h2o_ice           ! Actual density of h2o ice
33real,                             intent(in) :: h2oice_ini_surf   ! Initial surface of sublimating h2o ice
34logical, dimension(ngrid,nslope), intent(in) :: ini_h2oice_sublim ! Grid points where h2o ice was initially sublimating
35! Outputs
36!--------
37integer, intent(inout) :: stopPEM ! Stopping criterion code
38! Locals
39! ------
40integer :: i, islope       ! Loop
41real    :: h2oice_now_surf ! Current surface of h2o ice
42
43!=======================================================================
44! Computation of the present surface of h2o ice still sublimating
45h2oice_now_surf = 0.
46do i = 1,ngrid
47    do islope = 1,nslope
48        if (ini_h2oice_sublim(i,islope) .and. h2o_ice(i,islope) > 0.) h2oice_now_surf = h2oice_now_surf + cell_area(i)*subslope_dist(i,islope)
49    enddo
50enddo
51
52! Check of the criterion
53if (h2oice_now_surf < h2oice_ini_surf*(1. - h2o_ice_crit)) then
54    stopPEM = 1
55    write(*,*) "Reason of stopping: the surface of h2o ice sublimating reaches the threshold"
56    write(*,*) "h2oice_now_surf < h2oice_ini_surf*(1. - h2o_ice_crit)", h2oice_now_surf < h2oice_ini_surf*(1. - h2o_ice_crit)
57    write(*,*) "Initial surface of h2o ice sublimating =", h2oice_ini_surf
58    write(*,*) "Current surface of h2o ice sublimating =", h2oice_now_surf
59    write(*,*) "Percentage of change accepted =", h2o_ice_crit*100
60else if (h2oice_now_surf > h2oice_ini_surf*(1. + h2o_ice_crit)) then
61    stopPEM = 1
62    write(*,*) "Reason of stopping: the surface of h2o ice sublimating reaches the threshold"
63    write(*,*) "h2oice_now_surf > h2oice_ini_surf*(1. + h2o_ice_crit)", h2oice_now_surf > h2oice_ini_surf*(1. + h2o_ice_crit)
64    write(*,*) "Initial surface of h2o ice sublimating =", h2oice_ini_surf
65    write(*,*) "Current surface of h2o ice sublimating =", h2oice_now_surf
66    write(*,*) "Percentage of change accepted =", h2o_ice_crit*100
67endif
68
69if (abs(h2oice_ini_surf) < 1.e-5) stopPEM = 0
70
71END SUBROUTINE stopping_crit_h2o_ice
72
73!=======================================================================
74
75SUBROUTINE stopping_crit_co2(cell_area,co2ice_ini_surf,ini_co2ice_sublim,co2_ice,stopPEM,ngrid,global_avg_press_PCM,global_avg_press_new,nslope)
76
77use time_evol_mod, only: co2_ice_crit, ps_criterion
78use comslope_mod,  only: subslope_dist
79
80implicit none
81
82!=======================================================================
83!
84! Routine to check if the co2 and pressure criteria to stop the PEM are reached
85!
86!=======================================================================
87! Inputs
88!-------
89integer,                          intent(in) :: ngrid, nslope        ! # of grid physical grid points
90real,    dimension(ngrid),        intent(in) :: cell_area            ! Area of the cells
91real,    dimension(ngrid,nslope), intent(in) :: co2_ice              ! Actual density of co2 ice
92real,                             intent(in) :: co2ice_ini_surf      ! Initial surface of sublimatingco2 ice
93logical, dimension(ngrid,nslope), intent(in) :: ini_co2ice_sublim    ! Grid points where co2 ice was initially sublimating
94real,                             intent(in) :: global_avg_press_PCM ! Planet average pressure from the PCM start files
95real,                             intent(in) :: global_avg_press_new ! Planet average pressure from the PEM computations
96! Outputs
97!--------
98integer, intent(inout) :: stopPEM ! Stopping criterion code
99
100! Locals
101! ------
102integer :: i, islope       ! Loop
103real    :: co2ice_now_surf ! Current surface of co2 ice
104
105!=======================================================================
106! Computation of the present surface of co2 ice still sublimating
107co2ice_now_surf = 0.
108do i = 1,ngrid
109    do islope = 1,nslope
110        if (ini_co2ice_sublim(i,islope) .and. co2_ice(i,islope) > 0.) co2ice_now_surf = co2ice_now_surf + cell_area(i)*subslope_dist(i,islope)
111    enddo
112enddo
113
114! Check of the criterion
115if (co2ice_now_surf < co2ice_ini_surf*(1. - co2_ice_crit)) then
116    stopPEM = 3
117    write(*,*) "Reason of stopping: the surface of co2 ice sublimating reaches the threshold"
118    write(*,*) "co2ice_now_surf < co2ice_ini_surf*(1. - co2_ice_crit)", co2ice_now_surf < co2ice_ini_surf*(1. - co2_ice_crit)
119    write(*,*) "Initial surface of co2 ice sublimating =", co2ice_ini_surf
120    write(*,*) "Current surface of co2 ice sublimating =", co2ice_now_surf
121    write(*,*) "Percentage of change accepted =", co2_ice_crit*100.
122else if (co2ice_now_surf > co2ice_ini_surf*(1. + co2_ice_crit)) then
123    stopPEM = 3
124    write(*,*) "Reason of stopping: the surface of co2 ice sublimating reaches the threshold"
125    write(*,*) "co2ice_now_surf > co2ice_ini_surf*(1. + co2_ice_crit)", co2ice_now_surf > co2ice_ini_surf*(1. + co2_ice_crit)
126    write(*,*) "Current surface of co2 ice sublimating =", co2ice_now_surf
127    write(*,*) "Initial surface of co2 ice sublimating =", co2ice_ini_surf
128    write(*,*) "Percentage of change accepted =", co2_ice_crit*100.
129endif
130
131if (abs(co2ice_ini_surf) < 1.e-5) stopPEM = 0
132
133if (global_avg_press_new < global_avg_press_PCM*(1. - ps_criterion)) then
134    stopPEM = 4
135    write(*,*) "Reason of stopping: the global pressure reaches the threshold"
136    write(*,*) "global_avg_press_new < global_avg_press_PCM*(1. - ps_criterion)", global_avg_press_new < global_avg_press_PCM*(1. - ps_criterion)
137    write(*,*) "Initial global pressure =", global_avg_press_PCM
138    write(*,*) "Current global pressure =", global_avg_press_new
139    write(*,*) "Percentage of change accepted =", ps_criterion*100.
140else if (global_avg_press_new > global_avg_press_PCM*(1. + ps_criterion)) then
141    stopPEM = 4
142    write(*,*) "Reason of stopping: the global pressure reaches the threshold"
143    write(*,*) "global_avg_press_new > global_avg_press_PCM*(1. + ps_criterion)", global_avg_press_new > global_avg_press_PCM*(1. + ps_criterion)
144    write(*,*) "Initial global pressure =", global_avg_press_PCM
145    write(*,*) "Current global pressure =", global_avg_press_new
146    write(*,*) "Percentage of change accepted =", ps_criterion*100.
147endif
148
149END SUBROUTINE stopping_crit_co2
150
151END MODULE
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