1 |
adcroft |
1.1 |
% This is a matlab script that generates the input data |
2 |
|
|
prec='real*8'; |
3 |
|
|
ieee='b'; |
4 |
|
|
|
5 |
|
|
% Dimensions/resolution of grid (resolution/depth in m) |
6 |
|
|
nx=1; dx=10e3; |
7 |
|
|
ny=32; dy=10e3; |
8 |
|
|
dz=[50 50 55 60 65 70 80 95 120 155 200 260 320 400 480]; |
9 |
|
|
nz=prod(size(dz)); |
10 |
|
|
|
11 |
|
|
% Nominal depth of model (meters) |
12 |
|
|
Ho=sum(dz); |
13 |
|
|
|
14 |
|
|
% Topography (channel) |
15 |
|
|
H=-Ho*ones(nx,ny); |
16 |
|
|
H(:,end)=0; % Solid wall in North |
17 |
|
|
fid=fopen('topog.bin','w',ieee); fwrite(fid,H,prec); fclose(fid); |
18 |
|
|
|
19 |
|
|
% Size of domain (m) |
20 |
|
|
Lx=dx*nx; |
21 |
|
|
Ly=dy*(ny-1); % Solid wall in North |
22 |
|
|
|
23 |
adcroft |
1.2 |
% Variable resolution |
24 |
|
|
y=(1:ny)/(ny-0)-0.5; |
25 |
|
|
dy=1-0.3*exp( -(5*y).^2 ); |
26 |
|
|
%dy=ones(1,ny); % Constant resolution |
27 |
|
|
dy=dy/sum(dy(1:ny-1))*Ly; |
28 |
|
|
fid=fopen('dy.bin','w',ieee); fwrite(fid,dy,prec); fclose(fid); |
29 |
|
|
|
30 |
adcroft |
1.1 |
% Coordinates |
31 |
|
|
xc=((1:nx)-0.5)*dx; |
32 |
adcroft |
1.2 |
yf=-Ly/2+[0 cumsum(dy)]; |
33 |
|
|
yc=(yf(1:end-1)+yf(2:end))/2; |
34 |
adcroft |
1.1 |
zf=[0 -cumsum(dz)]; |
35 |
|
|
zc=(zf(1:end-1)+zf(2:end))/2; |
36 |
|
|
[X,Y]=ndgrid(xc,yc); |
37 |
|
|
|
38 |
|
|
% Stratification |
39 |
|
|
fo=1e-4; |
40 |
|
|
alpha=2e-4; |
41 |
|
|
gravity=9.81; |
42 |
|
|
N_over_f=20; |
43 |
|
|
N2=(N_over_f*fo)^2; |
44 |
|
|
dTdz=N2/(alpha*gravity); |
45 |
|
|
|
46 |
|
|
slope=1e-3; |
47 |
|
|
dTdy=-slope*dTdz; |
48 |
|
|
|
49 |
|
|
for k=1:nz, |
50 |
|
|
T(:,:,k)=20 +dTdz*zc(k) ... |
51 |
|
|
+dTdy*Ly*sin(pi*Y/Ly)... |
52 |
|
|
*exp(-(3*zc(k)/Ho)^2); |
53 |
|
|
end |
54 |
|
|
T(:,end,:)=0; |
55 |
jmc |
1.3 |
%- add 10 more levels: |
56 |
|
|
t25=zeros(nx,ny,nz+10); t25(:,:,[1:nz]=T; |
57 |
|
|
fid=fopen('theta.bin','w',ieee); fwrite(fid,t25,prec); fclose(fid); |
58 |
adcroft |
1.1 |
|
59 |
|
|
% Salt (passive tracer) |
60 |
|
|
for k=1:nz, |
61 |
|
|
%S(:,:,k)=ones(nx,ny)+zc(k)/Ho; % Linear with z |
62 |
|
|
%S(:,:,k)=exp(2*zc(k)/Ho); % Exponential with z |
63 |
|
|
%S(:,:,k)=exp(2*Y/Ly); % Exponential with y |
64 |
|
|
S(:,:,k)=exp(-(2*Y/Ly).^2); % Exponential with y |
65 |
|
|
end |
66 |
|
|
S(:,end,:)=0; |
67 |
jmc |
1.3 |
%- add 10 more levels: |
68 |
|
|
s25=zeros(nx,ny,nz+10); s25(:,:,[1:nz]=S; |
69 |
|
|
fid=fopen('salt.bin','w',ieee); fwrite(fid,s25,prec); fclose(fid); |