exp4/input/gendata.m

% This is a matlab script that generates the input data

% $Header:  $
% $Name:  $

% Dimensions of grid
nx=80;
ny=42;
nz=8;
% Nominal depth of model (meters)
H=4500;
% Scale of bump (m)
L=25e3;
% Height of bump (m)
dh=0.90*H;
% Horizontal resolution (m)
dx=5e3;
% Rotation
f=1e-4;
% Stratification
N=1.5 * f*L/H;

% Gravity
g=9.81;
% E.O.S.
alpha=2.e-4;

Tz=N^2/(g*alpha);
fprintf(' Tz= %e ;',Tz);

dz=H/nz;
fprintf(' delZ = %d * %7.6g\n',nz,dz);

x=(1:nx)*dx;x=x-mean(x);
y=(1:ny)*dx;y=y-mean(y);
z=-dz/2:-dz:-H;

[Y,X]=meshgrid(y,x);

% Temperature profile
fprintf('Tref ='); fprintf(' %8.6g,',Tz*z-mean(Tz*z)); fprintf('\n');

ieee='b';
prec='real*8';

% Gaussian bump
h=-H+dh*exp( -(X.^2+Y.^2)/(2*(L^2)) );
fid=fopen('topog.bump','w',ieee); fwrite(fid,h,prec); fclose(fid);

% $$$ % Side walls + bump
% $$$ h(:,1)=0;
% $$$ h(:,ny)=0;
% $$$ fid=fopen('topog.bumpchannel','w',ieee); fwrite(fid,h,prec); fclose(fid);

% $$$ % Simple channel
% $$$ h(:,1)=0;
% $$$ h(:,2:ny-1)=-H;
% $$$ h(:,ny)=0;
% $$$ fid=fopen('topog.channel','w',ieee); fwrite(fid,h,prec); fclose(fid);

% initial fields for salinity
si = 35;
%fid=fopen('S.init','w',ieee); fwrite(fid,si*ones(nx,ny,nz),prec); fclose(fid);

% open boundary conditions;
u0 = .25;
s0 = si+1;

% create two time slabs for testing
uMerid = cat(3,u0*ones(nx,nz),zeros(nx,nz));
uZonal = cat(3,u0*ones(ny,nz),zeros(ny,nz));
sZonal = cat(3,s0*ones(ny,nz),s0*ones(ny,nz));

fid=fopen('OBmeridU.bin','w',ieee); fwrite(fid,uMerid,prec); fclose(fid);
fid=fopen('OBzonalU.bin','w',ieee); fwrite(fid,uZonal,prec); fclose(fid);
fid=fopen('OBzonalS.bin','w',ieee); fwrite(fid,sZonal,prec); fclose(fid);

%- rbcs mask & restauring tracer field:
msk=ones(nx,ny,nz);
xMx=max(x);
shapeX=(x-xMx)/dx;
shapeX=exp(shapeX*2/3);

[I]=find(shapeX < 5.e-3); fprintf('zero out rbc-mask up to i= %i\n',max(I));
shapeX(I)=0.;
var=shapeX'*ones(1,ny*nz);
fid=fopen('rbcs_mask.bin','w',ieee); fwrite(fid,var,prec); fclose(fid);

tr1=(si+s0)/2;
var=tr1*ones(nx,ny,nz);
fid=fopen('rbcs_Tr1_fld.bin','w',ieee); fwrite(fid,var,prec); fclose(fid);

1	% This is a matlab script that generates the input data
2
3	% $Header: $
4	% $Name: $
5
6	% Dimensions of grid
7	nx=80;
8	ny=42;
9	nz=8;
10	% Nominal depth of model (meters)
11	H=4500;
12	% Scale of bump (m)
13	L=25e3;
14	% Height of bump (m)
15	dh=0.90*H;
16	% Horizontal resolution (m)
17	dx=5e3;
18	% Rotation
19	f=1e-4;
20	% Stratification
21	N=1.5 * f*L/H;
22
23	% Gravity
24	g=9.81;
25	% E.O.S.
26	alpha=2.e-4;
27
28	Tz=N^2/(g*alpha);
29	fprintf(' Tz= %e ;',Tz);
30
31	dz=H/nz;
32	fprintf(' delZ = %d * %7.6g\n',nz,dz);
33
34	x=(1:nx)*dx;x=x-mean(x);
35	y=(1:ny)*dx;y=y-mean(y);
36	z=-dz/2:-dz:-H;
37
38	[Y,X]=meshgrid(y,x);
39
40	% Temperature profile
41	fprintf('Tref ='); fprintf(' %8.6g,',Tzz-mean(Tzz)); fprintf('\n');
42
43	ieee='b';
44	prec='real*8';
45
46	% Gaussian bump
47	h=-H+dhexp( -(X.^2+Y.^2)/(2(L^2)) );
48	fid=fopen('topog.bump','w',ieee); fwrite(fid,h,prec); fclose(fid);
49
50	% $$$ % Side walls + bump
51	% $$$ h(:,1)=0;
52	% $$$ h(:,ny)=0;
53	% $$$ fid=fopen('topog.bumpchannel','w',ieee); fwrite(fid,h,prec); fclose(fid);
54
55	% $$$ % Simple channel
56	% $$$ h(:,1)=0;
57	% $$$ h(:,2:ny-1)=-H;
58	% $$$ h(:,ny)=0;
59	% $$$ fid=fopen('topog.channel','w',ieee); fwrite(fid,h,prec); fclose(fid);
60
61	% initial fields for salinity
62	si = 35;
63	%fid=fopen('S.init','w',ieee); fwrite(fid,si*ones(nx,ny,nz),prec); fclose(fid);
64
65	% open boundary conditions;
66	u0 = .25;
67	s0 = si+1;
68
69	% create two time slabs for testing
70	uMerid = cat(3,u0*ones(nx,nz),zeros(nx,nz));
71	uZonal = cat(3,u0*ones(ny,nz),zeros(ny,nz));
72	sZonal = cat(3,s0ones(ny,nz),s0ones(ny,nz));
73
74	fid=fopen('OBmeridU.bin','w',ieee); fwrite(fid,uMerid,prec); fclose(fid);
75	fid=fopen('OBzonalU.bin','w',ieee); fwrite(fid,uZonal,prec); fclose(fid);
76	fid=fopen('OBzonalS.bin','w',ieee); fwrite(fid,sZonal,prec); fclose(fid);
77
78	%- rbcs mask & restauring tracer field:
79	msk=ones(nx,ny,nz);
80	xMx=max(x);
81	shapeX=(x-xMx)/dx;
82	shapeX=exp(shapeX*2/3);
83
84	[I]=find(shapeX < 5.e-3); fprintf('zero out rbc-mask up to i= %i\n',max(I));
85	shapeX(I)=0.;
86	var=shapeX'ones(1,nynz);
87	fid=fopen('rbcs_mask.bin','w',ieee); fwrite(fid,var,prec); fclose(fid);
88
89	tr1=(si+s0)/2;
90	var=tr1*ones(nx,ny,nz);
91	fid=fopen('rbcs_Tr1_fld.bin','w',ieee); fwrite(fid,var,prec); fclose(fid);
92