| 1 | !> \file dragging_prescr_beta_mod.f90 |
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| 2 | !! Module pour calculer le beta a partir de vitesses de bilan |
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| 3 | !< |
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| 4 | |
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| 5 | !> \namespace dragging_prescr_beta |
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| 6 | !! Calcule le beta a partir de vitesses de bilan |
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| 7 | !! @note Il faut partir d'un cptr |
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| 8 | !! \author ... |
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| 9 | !! \date ... |
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| 10 | !! @note Used module |
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| 11 | !! @note - use module3D_phy |
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| 12 | !< |
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| 13 | |
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| 14 | module dragging_prescr_beta |
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| 15 | |
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| 16 | ! Calcule le beta a partir de vitesses de bilan |
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| 17 | ! il faut partir d'un cptr. |
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| 18 | |
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| 19 | use module3d_phy |
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| 20 | use interface_input |
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| 21 | implicit none |
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| 22 | real, dimension(nx,ny) :: Vcol_x !< uniquement pour compatibilite |
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| 23 | real, dimension(nx,ny) :: Vcol_y !< |
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| 24 | real, dimension(nx,ny) :: Vsl_x !< |
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| 25 | real, dimension(nx,ny) :: Vsl_y !< |
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| 26 | |
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| 27 | |
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| 28 | real, dimension(nx,ny) :: drag_centre !< beta on major node (average) |
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| 29 | !hassine !real, dimension(nx,ny) :: beta_centre ! beta on major node (average) |
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| 30 | real, dimension(nx,ny) :: betamoy_x !< pour faire les moyennes glissantes |
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| 31 | real, dimension(nx,ny) :: betamoy_y !< |
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| 32 | integer, dimension(nx,ny) :: nbvoisx !< |
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| 33 | integer, dimension(nx,ny) :: nbvoisy !< |
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| 34 | |
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| 35 | real, dimension(nx,ny) :: corrdS_centre !< correction dS |
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| 36 | real, dimension(nx,ny) :: corrdS_mx !< |
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| 37 | real, dimension(nx,ny) :: corrdS_my !< |
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| 38 | real, dimension(nx,ny) :: fleuves_nommes !< each ice stream is numbered |
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| 39 | |
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| 40 | real, dimension(nx,ny) :: corrstream_centre !< pour correction stream |
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| 41 | real, dimension(nx,ny) :: corrstream_mx !< |
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| 42 | real, dimension(nx,ny) :: corrstream_my !< |
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| 43 | integer :: numstream |
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| 44 | |
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| 45 | integer,parameter :: n_g = 2 !< taille de cette matrice (-n_g:n_g,-n_g:n_g) |
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| 46 | real, dimension(-2:2,-2:2) :: M_gauss !< matrice qui contient la gaussienne pour iterations beta |
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| 47 | real :: sigma_beta=1 !< sigma de la Gaussienne |
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| 48 | |
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| 49 | |
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| 50 | real, dimension(nx,ny) :: drag_instab_topo !< regions detected as topo instability |
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| 51 | real :: beta_limgz !< when beta gt beta_limgz -> not gzmx |
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| 52 | real :: beta_min !< minimum value of beta |
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| 53 | real :: beta_mult !< coefficient of beta field |
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| 54 | integer :: ill,jll,nmoy |
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| 55 | |
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| 56 | real :: maxi !< calcul correction dS a la grounding line |
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| 57 | real :: mini |
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| 58 | |
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| 59 | logical :: corr_def = .False. !< for deformation correction (compatibility) |
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| 60 | |
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| 61 | contains |
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| 62 | |
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| 63 | !----------------------------------------------------------------------------------------- |
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| 64 | !> SUBROUTINE: init_dragging |
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| 65 | !! Cette routine fait l'initialisation du dragging. |
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| 66 | !< |
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| 67 | subroutine init_dragging ! Cette routine fait l'initialisation du dragging. |
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| 68 | ! nouvelle version : lit les fichiers nc |
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| 69 | implicit none |
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| 70 | character(len=100) :: beta_c_file ! beta on centered grid |
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| 71 | character(len=100) :: betamx_file ! beta on staggered grid mx |
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| 72 | character(len=100) :: betamy_file ! beta on staggered grid mx |
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| 73 | |
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| 74 | namelist/beta_prescr/beta_c_file,beta_limgz,beta_min,beta_mult |
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| 75 | |
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| 76 | if (itracebug.eq.1) call tracebug(' Prescr_beta subroutine init_dragging') |
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| 77 | |
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| 78 | iter_beta=0 |
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| 79 | |
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| 80 | ! lecture des parametres du run |
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| 81 | !-------------------------------------------------------------------- |
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| 82 | |
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| 83 | rewind(num_param) ! pour revenir au debut du fichier param_list.dat |
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| 84 | 428 format(A) |
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| 85 | read(num_param,beta_prescr) |
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| 86 | |
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| 87 | write(num_rep_42,428) '!___________________________________________________________' |
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| 88 | write(num_rep_42,428) '! read beta on centered grid' |
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| 89 | write(num_rep_42,beta_prescr) |
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| 90 | write(num_rep_42,428) '! beta_file : nom des fichier qui contiennent les beta_c' |
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| 91 | write(num_rep_42,428) '! above beta_limgz, gzmx is false' |
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| 92 | write(num_rep_42,428) '! if grounded, beta_min minimum value ' |
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| 93 | write(num_rep_42,428) '! beta_mult : coefficient just after reading' |
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| 94 | write(num_rep_42,*) |
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| 95 | write(num_rep_42,428) '!___________________________________________________________' |
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| 96 | |
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| 97 | |
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| 98 | beta_c_file = trim(dirnameinp)//trim(beta_c_file) |
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| 99 | betamx_file = trim(dirnameinp)//trim(betamx_file) |
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| 100 | betamy_file = trim(dirnameinp)//trim(betamy_file) |
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| 101 | betamax = beta_limgz |
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| 102 | |
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| 103 | ! read the beta value on centered and staggered grids |
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| 104 | ! call lect_input(1,'beta_c',1,drag_centre,beta_c_file,trim(dirnameinp)//trim(runname)//'.nc') |
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| 105 | ! call lect_input(1,'betamx',1,drag_mx,betamx_file,trim(dirnameinp)//trim(runname)//'.nc') |
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| 106 | ! call lect_input(1,'betamy',1,drag_my,betamy_file,trim(dirnameinp)//trim(runname)//'.nc') |
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| 107 | |
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| 108 | |
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| 109 | call lect_input(1,'beta_c',1,drag_centre,beta_c_file,'') |
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| 110 | |
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| 111 | ! multiplication par le coefficient beta_mult |
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| 112 | if (itracebug.eq.1) call tracebug(' Prescr_beta apres lecture') |
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| 113 | drag_centre(:,:) = drag_centre(:,:)*beta_mult |
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| 114 | |
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| 115 | |
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| 116 | ! call lect_input(1,'betamx',1,drag_mx,betamx_file,'') |
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| 117 | ! call lect_input(1,'betamy',1,drag_my,betamy_file,'') |
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| 118 | |
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| 119 | |
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| 120 | call beta_c2stag(nx,ny,drag_mx,drag_my,drag_centre) ! redistribute on staggered grid |
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| 121 | |
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| 122 | if (beta_limgz.gt.0.) then |
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| 123 | beta_centre(:,:) = drag_centre(:,:) |
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| 124 | betamx(:,:) = drag_mx(:,:) |
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| 125 | betamy(:,:) = drag_my(:,:) |
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| 126 | |
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| 127 | if (itracebug.eq.1) call tracebug(' Prescr_beta apres call beta_c2stag') |
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| 128 | |
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| 129 | else if (beta_limgz.lt.0.) then ! attention sans doute pour plastic |
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| 130 | |
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| 131 | beta_centre(:,:) = - beta_limgz |
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| 132 | betamx(:,:) = - beta_limgz |
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| 133 | betamy(:,:) = - beta_limgz |
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| 134 | drag_centre(:,:) = - beta_limgz |
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| 135 | drag_mx(:,:) = - beta_limgz |
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| 136 | drag_my(:,:) = - beta_limgz |
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| 137 | beta_limgz = 1. |
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| 138 | end if |
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| 139 | |
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| 140 | |
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| 141 | ! divers traitements qui peuvent etre appliques a beta : mis sous forme de routine |
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| 142 | |
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| 143 | ! call beta_plateau_slope ! give value beta_limgz to places where slope is >1.e-2 |
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| 144 | ! call beta_stag2c ! average the staggered values on central ones |
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| 145 | ! call beta_plateau_S ! give value beta_limgz to places where S > 2500 m |
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| 146 | |
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| 147 | call beta_min_value(beta_min) ! valeur mini que peut avoir beta (en Pa an m-1) |
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| 148 | ! on peut envisager une valeur ~ 10 |
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| 149 | ! rappel : beta doit être positif. |
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| 150 | |
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| 151 | ! call beta_c2stag(nx,ny,drag_mx,drag_my,drag_centre) ! redistribute on staggered grid |
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| 152 | |
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| 153 | |
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| 154 | ! mstream attribution |
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| 155 | !________________________ |
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| 156 | ! mstream -> regions where streaming is allowed |
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| 157 | ! drag_mx -> value of beta if an ice stream is allowed |
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| 158 | ! betamx -> value of dragging (may depend on other conditions) |
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| 159 | |
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| 160 | ! to ensure having some "Dirichlet" points, there must be at least |
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| 161 | ! a mstream=0 in every island |
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| 162 | |
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| 163 | |
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| 164 | ! un tour de lissage |
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| 165 | ! call beta_stag2c(nx,ny,drag_mx,drag_my,drag_centre) ! average staggered |
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| 166 | ! ! on central |
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| 167 | |
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| 168 | ! call beta_c2stag(nx,ny,drag_mx,drag_my,drag_centre) ! centered distributed |
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| 169 | ! ! on staggered |
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| 170 | ! |
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| 171 | beta_centre(:,:) = drag_centre(:,:) ! surtout pour sorties |
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| 172 | |
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| 173 | |
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| 174 | |
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| 175 | where (drag_mx(:,:).ge.beta_limgz) |
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| 176 | mstream_mx(:,:) = 0 |
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| 177 | betamx(:,:) = beta_limgz |
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| 178 | drag_mx(:,:) = beta_limgz |
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| 179 | elsewhere |
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| 180 | mstream_mx(:,:) = 1 |
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| 181 | betamx(:,:) = drag_mx(:,:) |
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| 182 | endwhere |
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| 183 | |
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| 184 | where (drag_my(:,:).ge.beta_limgz) |
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| 185 | mstream_my(:,:) = 0 |
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| 186 | betamy(:,:) = beta_limgz |
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| 187 | drag_my(:,:) = beta_limgz |
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| 188 | elsewhere |
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| 189 | mstream_my(:,:) = 1 |
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| 190 | betamy(:,:) = drag_my(:,:) |
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| 191 | endwhere |
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| 192 | |
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| 193 | if (itracebug.eq.1) call tracebug(' Prescr_beta apres lecture') |
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| 194 | mstream_mx(:,:) = 0 |
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| 195 | mstream_my(:,:) = 0 |
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| 196 | |
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| 197 | if (itracebug.eq.1) call tracebug(' Prescr_beta avant call gzm') |
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| 198 | call gzm_beta_prescr |
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| 199 | ! call write_datfile2(nx,ny,betamx,betamy,'beta-LBq15-08.dat') |
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| 200 | |
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| 201 | call make_gaussienne(n_g,sigma_beta,M_gauss) |
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| 202 | STOP |
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| 203 | return |
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| 204 | |
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| 205 | end subroutine init_dragging |
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| 206 | !________________________________________________________________________________ |
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| 207 | |
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| 208 | !> SUBROUTINE: dragging |
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| 209 | !! Defini la localisation des streams et le frottement basal |
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| 210 | !< |
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| 211 | !------------------------------------------------------------------------- |
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| 212 | subroutine dragging ! defini la localisation des streams et le frottement basal |
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| 213 | |
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| 214 | implicit none |
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| 215 | |
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| 216 | |
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| 217 | |
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| 218 | if (itracebug.eq.1) call tracebug(' beta_prescr subroutine dragging') |
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| 219 | |
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| 220 | |
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| 221 | ! tentative d'iteration |
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| 222 | |
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| 223 | ! call beta_stag2c(nx,ny,drag_mx,drag_my,drag_centre) ! average staggered |
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| 224 | ! on central |
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| 225 | ! call iter_gauss(n_g,nx,ny,M_gauss,-1.,drag_centre,corrstream_centre,hdot) ! correct central |
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| 226 | ! call beta_c2stag(nx,ny,drag_mx,drag_my,corrstream_centre) ! centered distributed |
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| 227 | ! on staggered |
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| 228 | ! drag_centre(:,:) = corrstream_centre(:,:) |
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| 229 | ! beta_centre(:,:) = drag_centre(:,:) ! surtout pour sorties |
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| 230 | |
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| 231 | ! pour l'instant pas d'autre condition que mstream |
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| 232 | where (mstream_mx(:,:).eq.1) |
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| 233 | betamx(:,:) = drag_mx(:,:) |
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| 234 | elsewhere |
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| 235 | betamx(:,:)= beta_limgz |
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| 236 | end where |
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| 237 | |
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| 238 | where (mstream_my(:,:).eq.1) |
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| 239 | betamy(:,:) = drag_my(:,:) |
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| 240 | elsewhere |
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| 241 | betamy(:,:)= beta_limgz |
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| 242 | end where |
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| 243 | |
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| 244 | betamx(:,:)=drag_mx(:,:) |
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| 245 | betamy(:,:)=drag_my(:,:) |
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| 246 | |
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| 247 | call gzm_beta_prescr ! determine gz et flgz et met a 0 le beta des points flottants |
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| 248 | |
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| 249 | |
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| 250 | return |
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| 251 | end subroutine dragging |
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| 252 | |
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| 253 | !---------------------------------------------------------------------------------- |
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| 254 | !>SUBROUTINE: gzm_beta_prescr |
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| 255 | !! Calcul de gzmx |
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| 256 | !< |
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| 257 | |
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| 258 | subroutine gzm_beta_prescr ! attribue flgzmx et gzmx (et my) |
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| 259 | |
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| 260 | logical :: test_Tx ! test if there is a basal melting point in the surrounding |
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| 261 | logical :: test_Ty ! test if there is a basal melting point in the surrounding |
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| 262 | logical :: test_beta_x ! test if there is a low drag point in the surrounding |
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| 263 | logical :: test_beta_y ! test if there is a low drag point in the surrounding |
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| 264 | |
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| 265 | real :: beta_forc_fleuve ! below this value -> ice stream |
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| 266 | |
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| 267 | beta_forc_fleuve = 5.e3 |
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| 268 | |
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| 269 | ! calcul de gzmx |
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| 270 | |
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| 271 | |
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| 272 | gzmx(:,:)=.true. |
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| 273 | gzmy(:,:)=.true. |
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| 274 | flgzmx(:,:)=.false. |
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| 275 | flgzmy(:,:)=.false. |
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| 276 | |
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| 277 | |
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| 278 | ! points flottants : flgzmx mais pas gzmx |
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| 279 | do j=2,ny |
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| 280 | do i=2,nx |
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| 281 | if (flot(i,j).and.(flot(i-1,j))) then |
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| 282 | flotmx(i,j)=.true. |
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| 283 | flgzmx(i,j)=.true. |
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| 284 | gzmx(i,j)=.false. |
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| 285 | betamx(i,j)=0. |
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| 286 | end if |
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| 287 | if (flot(i,j).and.(flot(i,j-1))) then |
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| 288 | flotmy(i,j)=.true. |
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| 289 | flgzmy(i,j)=.true. |
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| 290 | gzmy(i,j)=.false. |
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| 291 | betamy(i,j)=0. |
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| 292 | end if |
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| 293 | end do |
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| 294 | end do |
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| 295 | |
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| 296 | !--------- autres criteres |
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| 297 | |
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| 298 | ! points poses |
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| 299 | gzmx(:,:)=gzmx(:,:).and.(betamx(:,:).lt.beta_limgz) ! Pas de calcul pour les points |
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| 300 | gzmy(:,:)=gzmy(:,:).and.(betamy(:,:).lt.beta_limgz) ! au fort beta |
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| 301 | |
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| 302 | |
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| 303 | |
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| 304 | ! critere (lache) sur la temperature |
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| 305 | do j = 2, ny-1 |
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| 306 | do i =2, nx-1 |
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| 307 | |
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| 308 | ! test s'il y a un point tempere dans les environs |
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| 309 | test_Tx = any( ibase( i-1:i , j-1:j+1 ).gt.1) |
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| 310 | test_Ty = any( ibase( i-1:i+1 , j-1:j ).gt.1) |
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| 311 | |
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| 312 | ! test s'il y a un point low drag dans les environs |
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| 313 | test_beta_x = any( drag_centre( i-1:i , j-1:j+1 ) .lt. beta_forc_fleuve ) |
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| 314 | test_beta_y = any( drag_centre( i-1:i+1 , j-1:j ) .lt. beta_forc_fleuve ) |
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| 315 | |
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| 316 | ! critere pour gzmx |
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| 317 | gzmx(i,j) = gzmx(i,j) .and. (test_Tx.or.test_beta_x) |
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| 318 | gzmy(i,j) = gzmy(i,j) .and. (test_Ty.or.test_beta_y) |
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| 319 | |
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| 320 | end do |
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| 321 | end do |
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| 322 | |
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| 323 | flgzmx(:,:) = flgzmx(:,:) .or. gzmx(:,:) |
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| 324 | flgzmy(:,:) = flgzmy(:,:) .or. gzmy(:,:) |
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| 325 | |
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| 326 | where ((.not.flotmx(:,:)).and.(.not.gzmx(:,:))) |
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| 327 | betamx(:,:) = beta_limgz |
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| 328 | end where |
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| 329 | |
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| 330 | where ((.not.flotmy(:,:)).and.(.not.gzmy(:,:))) |
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| 331 | betamy(:,:) = beta_limgz |
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| 332 | end where |
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| 333 | |
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| 334 | |
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| 335 | |
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| 336 | end subroutine gzm_beta_prescr |
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| 337 | |
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| 338 | |
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| 339 | !---------------------------------------------------------------------------------- |
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| 340 | ! Routines qui permettent des manip simples sur beta. |
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| 341 | |
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| 342 | |
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| 343 | !______________________________________________________________________________________ |
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| 344 | !>SUBROUTINE: beta_plateau_slope |
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| 345 | !! give value beta_limgz to places where slope is >1.e-2 |
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| 346 | !< |
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| 347 | |
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| 348 | subroutine beta_plateau_slope ! give value beta_limgz to places where slope is >1.e-2 |
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| 349 | |
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| 350 | call slope_surf |
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| 351 | |
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| 352 | where (abs(sdx(:,:)).gt.1.e-2) |
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| 353 | drag_mx(:,:) = beta_limgz |
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| 354 | end where |
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| 355 | |
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| 356 | where (abs(sdy(:,:)).gt.1.e-2) |
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| 357 | drag_my(:,:) = beta_limgz |
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| 358 | end where |
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| 359 | end subroutine beta_plateau_slope |
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| 360 | !______________________________________________________________________________________ |
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| 361 | !> SUBROUTINE beta_plateau_S |
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| 362 | !! give value beta_limgz to places where S > 2500 m |
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| 363 | !< |
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| 364 | subroutine beta_plateau_S ! give value beta_limgz to places where S > 2500 m |
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| 365 | |
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| 366 | where (S(:,:).gt.2500.) ! moyen simple de nettoyer l'interieur. WAIS pas touche |
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| 367 | drag_centre(:,:)=beta_limgz |
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| 368 | drag_mx(:,:)=beta_limgz |
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| 369 | drag_my(:,:)=beta_limgz |
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| 370 | end where |
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| 371 | end subroutine beta_plateau_S |
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| 372 | !______________________________________________________________________________________ |
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| 373 | !>SUBROUTINE: beta_min_value |
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| 374 | !! valeur mini que peut avoir beta (en Pa an m-1) |
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| 375 | !< |
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| 376 | |
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| 377 | subroutine beta_min_value(val_betamin) |
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| 378 | |
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| 379 | real :: val_betamin ! valeur mini que peut avoir beta (en Pa an m-1) |
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| 380 | |
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| 381 | drag_centre(:,:) = max(drag_centre(:,:),val_betamin) |
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| 382 | drag_mx(:,:) = max(drag_mx(:,:),val_betamin) |
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| 383 | drag_my(:,:) = max(drag_my(:,:),val_betamin) |
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| 384 | where(flot(:,:)) |
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| 385 | drag_centre(:,:) = 0. |
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| 386 | end where |
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| 387 | |
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| 388 | end subroutine beta_min_value |
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| 389 | !______________________________________________________________________________________ |
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| 390 | !>SUBROUTINE: beta_stag2c |
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| 391 | !! average the staggered values on central ones |
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| 392 | !< |
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| 393 | |
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| 394 | subroutine beta_stag2c(nxx,nyy,R_mx,R_my,R_centre) ! average the staggered values on central ones |
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| 395 | |
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| 396 | implicit none |
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| 397 | integer :: nxx,nyy ! dimension des tableaux |
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| 398 | real, dimension(nxx,nyy), intent(in) :: R_mx ! valeur du beta sur maille mx |
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| 399 | real, dimension(nxx,nyy), intent(in) :: R_my ! valeur du beta sur maille my |
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| 400 | real, dimension(nxx,nyy), intent(out) :: R_centre ! valeur du beta sur maille centree |
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| 401 | |
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| 402 | R_centre(:,:)=0. |
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| 403 | do j=2,ny-1 |
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| 404 | do i=2,nx-1 |
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| 405 | R_centre(i,j)= ((R_mx(i,j)+R_mx(i+1,j)) & |
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| 406 | + (R_my(i,j)+R_my(i,j+1)))*0.25 |
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| 407 | end do |
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| 408 | end do |
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| 409 | end subroutine beta_stag2c |
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| 410 | !______________________________________________________________________________________ |
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| 411 | !>SUBROUTINE: beta_c2stag_min |
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| 412 | !! redistribute central values on staggered grid |
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| 413 | !< |
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| 414 | |
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| 415 | subroutine beta_c2stag(nxx,nyy,R_mx,R_my,R_centre) ! redistribute central values on staggered grid |
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| 416 | |
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| 417 | implicit none |
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| 418 | integer :: nxx,nyy ! dimension des tableaux |
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| 419 | real, dimension(nxx,nyy), intent(out) :: R_mx ! valeur du beta sur maille mx |
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| 420 | real, dimension(nxx,nyy), intent(out) :: R_my ! valeur du beta sur maille my |
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| 421 | real, dimension(nxx,nyy), intent(in) :: R_centre ! valeur du beta sur maille centree |
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| 422 | |
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| 423 | do j=2,nyy |
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| 424 | do i=2,nxx |
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| 425 | R_mx(i,j)= (R_centre(i-1,j)+R_centre(i,j))*0.5 |
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| 426 | R_my(i,j)= (R_centre(i,j-1)+R_centre(i,j))*0.5 |
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| 427 | end do |
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| 428 | end do |
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| 429 | |
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| 430 | end subroutine beta_c2stag |
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| 431 | !______________________________________________________________________________________ |
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| 432 | !>SUBROUTINE: beta_c2stag_min |
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| 433 | !! redistribute central values on staggered grid |
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| 434 | !< |
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| 435 | |
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| 436 | subroutine beta_c2stag_min(nxx,nyy,R_mx,R_my,R_centre) ! redistribute central values on staggered grid |
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| 437 | |
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| 438 | implicit none |
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| 439 | integer :: nxx,nyy ! dimension des tableaux |
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| 440 | real, dimension(nxx,nyy), intent(inout):: R_mx ! valeur du beta sur maille mx |
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| 441 | real, dimension(nxx,nyy), intent(inout):: R_my ! valeur du beta sur maille my |
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| 442 | real, dimension(nxx,nyy), intent(in) :: R_centre ! valeur du beta sur maille centree |
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| 443 | |
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| 444 | do j=2,nyy |
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| 445 | do i=2,nxx |
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| 446 | R_mx(i,j)= min(R_mx(i,j),(R_centre(i-1,j)+R_centre(i,j))*0.5) |
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| 447 | R_my(i,j)= min(R_my(i,j),(R_centre(i,j-1)+R_centre(i,j))*0.5) |
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| 448 | end do |
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| 449 | end do |
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| 450 | |
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| 451 | end subroutine beta_c2stag_min |
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| 452 | !______________________________________________________________________________________ |
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| 453 | !>SUBROUTINE: make_gaussienne |
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| 454 | !! cree une matrice gaussienne normalisee a 1 |
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| 455 | !< |
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| 456 | |
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| 457 | subroutine make_gaussienne(n,sigma,M) |
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| 458 | |
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| 459 | implicit none |
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| 460 | integer,intent(in) :: n ! demi taille du tableau gaussienne |
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| 461 | real, intent(in) :: sigma ! sigma gaussienne exprime en dx |
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| 462 | real,dimension(-n:n,-n:n),intent(inout) :: M ! tableau gaussienne |
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| 463 | |
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| 464 | |
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| 465 | ! variables locales |
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| 466 | real :: dist2 ! distance au centre (au carre) |
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| 467 | real :: som ! pour calibration |
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| 468 | real :: sigma2 ! pour gaussienne |
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| 469 | |
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| 470 | som = 0. |
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| 471 | sigma2 = sigma * sigma * 2 |
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| 472 | do j = -n, n |
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| 473 | do i = -n, n |
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| 474 | dist2 = (i*i+j*j) |
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| 475 | M(i,j) = exp(-dist2/sigma2) |
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| 476 | som=som+M(i,j) |
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| 477 | end do |
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| 478 | end do |
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| 479 | |
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| 480 | M(:,:) = M(:,:) / som |
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| 481 | |
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| 482 | ! do j = -n, n |
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| 483 | ! write(6,'(5(f0.4,1x))') (M(i,j),i=-n,n) |
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| 484 | ! end do |
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| 485 | |
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| 486 | end subroutine make_gaussienne |
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| 487 | |
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| 488 | !______________________________________________________________________________________ |
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| 489 | !>SUBROUTINE: iter_gauss |
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| 490 | !! utilise hdot pour faire les iterations sur beta_centre |
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| 491 | !< |
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| 492 | subroutine iter_gauss(n,nxx,nyy,M,coef,beta_in,beta_out,Ecart) |
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| 493 | |
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| 494 | integer, intent(in) :: n ! taille matrice gaussienne |
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| 495 | integer, intent(in) :: nxx,nyy ! taille du domaine |
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| 496 | real,dimension(-n:n,-n:n),intent(in) :: M ! matrice gaussienne |
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| 497 | real, intent(in) :: coef ! coefficient multiplicateur |
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| 498 | real,dimension(nx,ny), intent(in) :: beta_in ! la valeur initiale |
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| 499 | real,dimension(nx,ny), intent(out) :: beta_out ! la valeur apres iteration |
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| 500 | real,dimension(nx,ny), intent(in) :: Ecart ! l'ecart a l'obs |
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| 501 | |
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| 502 | ! variables locales |
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| 503 | integer :: ii,jj |
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| 504 | |
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| 505 | do j= 1 + n, nyy - n |
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| 506 | do i = 1 + n, nxx - n |
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| 507 | beta_out(i,j) = beta_in(i,j) |
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| 508 | |
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| 509 | do jj = -n, n |
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| 510 | do ii = -n, n |
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| 511 | beta_out(i,j) = beta_out(i,j) + coef * M(ii,jj) * ecart(i+ii,j+jj) |
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| 512 | end do |
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| 513 | end do |
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| 514 | |
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| 515 | end do |
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| 516 | end do |
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| 517 | |
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| 518 | beta_out(:,:) = max (beta_out(:,:),0.) |
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| 519 | end subroutine iter_gauss |
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| 520 | |
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| 521 | end module dragging_prescr_beta |
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| 522 | |
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| 523 | !!$! add the nodes of topographical instability (on major nodes) |
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| 524 | ! a garder eventuellement pour runs instabilite |
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| 525 | !!$beta_file = trim(dirnameinp)//'sensib_H_Gael-15km.dat' |
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| 526 | !!$call lect_datfile(nx,ny,drag_instab_topo,1,beta_file) |
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| 527 | !!$ |
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| 528 | !!$where (drag_instab_topo(:,:).gt.0.) |
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| 529 | !!$ drag_centre(:,:)=min(drag_centre(:,:),400.) |
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| 530 | !!$endwhere |
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