| 1 |
adcroft |
1.1 |
% This is a matlab script that generates the input data |
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| 3 |
jmc |
1.8 |
% $Header: /u/gcmpack/MITgcm/verification/exp4/input/gendata.m,v 1.7 2011/05/02 19:35:38 jmc Exp $ |
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jmc |
1.6 |
% $Name: $ |
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| 6 |
adcroft |
1.1 |
% Dimensions of grid |
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nx=80; |
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ny=42; |
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nz=8; |
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% Nominal depth of model (meters) |
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H=4500; |
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% Scale of bump (m) |
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L=25e3; |
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% Height of bump (m) |
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dh=0.90*H; |
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% Horizontal resolution (m) |
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dx=5e3; |
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% Rotation |
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f=1e-4; |
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% Stratification |
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N=1.5 * f*L/H; |
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% Gravity |
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g=9.81; |
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% E.O.S. |
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alpha=2.e-4; |
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jmc |
1.6 |
Tz=N^2/(g*alpha); |
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fprintf(' Tz= %e ;',Tz); |
| 30 |
adcroft |
1.1 |
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| 31 |
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dz=H/nz; |
| 32 |
jmc |
1.6 |
fprintf(' delZ = %d * %7.6g\n',nz,dz); |
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adcroft |
1.1 |
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x=(1:nx)*dx;x=x-mean(x); |
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y=(1:ny)*dx;y=y-mean(y); |
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z=-dz/2:-dz:-H; |
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[Y,X]=meshgrid(y,x); |
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% Temperature profile |
| 41 |
jmc |
1.6 |
fprintf('Tref ='); fprintf(' %8.6g,',Tz*z-mean(Tz*z)); fprintf('\n'); |
| 42 |
adcroft |
1.1 |
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| 43 |
adcroft |
1.3 |
ieee='b'; |
| 44 |
jmc |
1.6 |
prec='real*8'; |
| 45 |
adcroft |
1.3 |
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| 46 |
adcroft |
1.1 |
% Gaussian bump |
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h=-H+dh*exp( -(X.^2+Y.^2)/(2*(L^2)) ); |
| 48 |
jmc |
1.6 |
fid=fopen('topog.bump','w',ieee); fwrite(fid,h,prec); fclose(fid); |
| 49 |
adcroft |
1.1 |
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| 50 |
mlosch |
1.4 |
% $$$ % Side walls + bump |
| 51 |
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% $$$ h(:,1)=0; |
| 52 |
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% $$$ h(:,ny)=0; |
| 53 |
jmc |
1.6 |
% $$$ fid=fopen('topog.bumpchannel','w',ieee); fwrite(fid,h,prec); fclose(fid); |
| 54 |
adcroft |
1.1 |
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| 55 |
mlosch |
1.4 |
% $$$ % Simple channel |
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% $$$ h(:,1)=0; |
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% $$$ h(:,2:ny-1)=-H; |
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% $$$ h(:,ny)=0; |
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jmc |
1.6 |
% $$$ fid=fopen('topog.channel','w',ieee); fwrite(fid,h,prec); fclose(fid); |
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mlosch |
1.4 |
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| 61 |
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% initial fields for salinity |
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si = 35; |
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jmc |
1.6 |
%fid=fopen('S.init','w',ieee); fwrite(fid,si*ones(nx,ny,nz),prec); fclose(fid); |
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mlosch |
1.4 |
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% open boundary conditions; |
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u0 = .25; |
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s0 = si+1; |
| 68 |
jmc |
1.7 |
w0= 1.e-3; |
| 69 |
mlosch |
1.4 |
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| 70 |
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% create two time slabs for testing |
| 71 |
jmc |
1.7 |
uMerid = cat(3,u0*ones(nx,nz),u0*ones(nx,nz)); |
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uZonal = cat(3,u0*ones(ny,nz), zeros(ny,nz)); |
| 73 |
mlosch |
1.4 |
sZonal = cat(3,s0*ones(ny,nz),s0*ones(ny,nz)); |
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jmc |
1.7 |
%- time varying fraction = 1 % of full velocity |
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du=u0*0.01; |
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uWest = cat(3,(u0+du)*ones(ny,nz),(u0-du)*ones(ny,nz)); |
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uEast = cat(3,(u0-du)*ones(ny,nz),(u0+du)*ones(ny,nz)); |
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| 80 |
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% to test Non-Hydrostatic OBCS: |
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w1=[0:nz-1]*pi/nz; w1=-w0*sin(w1); |
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wZonal = cat (3, ones(ny,1)*w1, zeros(ny,nz)); |
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jmc |
1.8 |
% to test prescribing Eta in NonLin-FreeSurf formulation: |
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et1=0.1; |
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etWest = cat(2,+et1*ones(ny,1),-et1*ones(ny,1)); |
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etEast = cat(2,-et1*ones(ny,1),+et1*ones(ny,1)); |
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jmc |
1.7 |
fid=fopen('OBmeridU.bin','w',ieee); fwrite(fid,uMerid,prec); fclose(fid); |
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%fid=fopen('OBzonalU.bin','w',ieee); fwrite(fid,uZonal,prec); fclose(fid); |
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fid=fopen('OB_WestU.bin','w',ieee); fwrite(fid,uWest ,prec); fclose(fid); |
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fid=fopen('OB_EastU.bin','w',ieee); fwrite(fid,uEast ,prec); fclose(fid); |
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fid=fopen('OBzonalS.bin','w',ieee); fwrite(fid,sZonal,prec); fclose(fid); |
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fid=fopen('OBzonalW.bin','w',ieee); fwrite(fid,wZonal,prec); fclose(fid); |
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jmc |
1.8 |
fid=fopen('OB_WestH.bin','w',ieee); fwrite(fid,etWest,prec); fclose(fid); |
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fid=fopen('OB_EastH.bin','w',ieee); fwrite(fid,etEast,prec); fclose(fid); |
| 97 |
jmc |
1.6 |
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| 98 |
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%- rbcs mask & restauring tracer field: |
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msk=ones(nx,ny,nz); |
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xMx=max(x); |
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shapeX=(x-xMx)/dx; |
| 102 |
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shapeX=exp(shapeX*2/3); |
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[I]=find(shapeX < 5.e-3); fprintf('zero out rbc-mask up to i= %i\n',max(I)); |
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shapeX(I)=0.; |
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var=shapeX'*ones(1,ny*nz); |
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fid=fopen('rbcs_mask.bin','w',ieee); fwrite(fid,var,prec); fclose(fid); |
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tr1=(si+s0)/2; |
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var=tr1*ones(nx,ny,nz); |
| 111 |
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fid=fopen('rbcs_Tr1_fld.bin','w',ieee); fwrite(fid,var,prec); fclose(fid); |
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