/[MITgcm]/MITgcm_contrib/timour_matlab/mscripts/asym.m
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Contents of /MITgcm_contrib/timour_matlab/mscripts/asym.m

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Revision 1.1 - (show annotations) (download)
Wed Sep 3 21:22:22 2003 UTC (21 years, 10 months ago) by edhill
Branch: MAIN
CVS Tags: HEAD
Error occurred while calculating annotation data.
initial checkin of Timour's MatLAB scripts

1 clear path
2
3 global Nx Ny Nz
4 global lat long dz dm mdep
5 global delt_su su_its t_su delt
6 global descriptor this_path
7 global f deltaf Q beta r_expt r_heat H
8 global time rots it
9 global g Cp rho_bar alpha
10 global u v t w
11 global iterations
12
13
14 param_file_name = ...
15 input(' Please enter the name of the m-file with the parameters for this run : ','s') ;
16 feval(param_file_name) ;
17
18 % compute the E-W asymmetry of the thermocline and its depth
19
20 iterations
21
22 itstart = input(' Please enter start iteration : ','s')
23 itend = input(' Please enter end iteration : ','s')
24
25
26 sizeit=size(iterations);
27 for i=1:sizeit(1)
28 iter(i)=eval(iterations(i,1:10));
29 end
30 nitstart=find(iter==eval(itstart))
31 nitend=find(iter==eval(itend))
32
33 path = this_path
34 cmdstr=['cd ' path ];
35 eval(cmdstr);
36 path=pwd
37
38 sumtheta=zeros(Nx,Ny,Nz);
39 counter=0;
40
41 for i=nitstart:nitend
42 tfilename=(['T.' iterations((i),1:10) ]) ;
43 t=rdmds(tfilename,'b');
44 sumtheta=sumtheta+t;
45 counter=counter+1;
46 end
47 meantheta=sumtheta/counter;
48 meantheta(:,:,1)=20;
49 meantheta(:,:,2)=20;
50 meantheta(:,:,3)=20;
51
52
53 %cmin=20;
54 %cmax=24,
55 %V=[cmin cmax];
56 %figure
57 %caxis('manual')
58 %
59 %subplot(1,2,1)
60 % title='average temperature at z=2';
61 % imagesc(lat,long,squeeze(meantheta(:,:,2))');shading flat;axis image;caxis(V);colorbar('horizontal');
62 % text(0,-30,descriptor);text(50,-30,num2str(nitend-nitstart+1));text(80,-30,'files');
63 % text(0,140,title);
64 % text(0,-20,'from timestep');text(50,-20,num2str(itstart));
65 % text(0,-10,'to'); text(50,-10,num2str(itend));
66 %
67 %subplot(1,2,2)
68 % contour(flipud(squeeze(meantheta(:,Ny/2,:))'),50);caxis(V);colorbar;grid
69 % text(0,-2,'average temperature at mid-tank')
70 %
71
72
73 %
74 NNN=Ny/2
75 %
76
77 tx=zeros(Nx,1);
78
79 for i=1:Nx,
80
81 for k=1:Nz,
82 for j=NNN-10:NNN+10,
83 tx(i)=tx(i)+meantheta(i,j,k);
84 end
85 end
86 tx(i)=tx(i)/Nz;
87 tx(i)=tx(i)/21;
88 end
89
90 i=find(tx<20);
91 tx(i)=20;
92
93 tmax=max(tx);
94
95 lmax=find(tx==tmax);
96
97
98 tmin=min(tx);
99
100 te=tmin+(tmax-tmin)/2.71;
101
102 tsign=zeros(Nx-1,1);
103
104 for i=1:Nx-1
105 tsign(i)=(tx(i)-te)*(tx(i+1)-te);
106 end
107
108 ii=find(tsign<0);
109
110 xw=ii(1)+0.5;
111 xe=ii(2)+0.5;
112
113 x0=(lmax-xw)/(xe-xw)
114
115 txe=zeros(Nx,1);
116 txe(:)=te;
117
118 plot(tx)
119 hold on
120 plot(txe,'--')
121 hold off
122
123 % Depth
124 %
125 %tz=zeros(Nz,1);
126 %for k=1:Nz,
127 %for i=1:Nx,
128 %tz(k)=tz(k)+meantheta(i,NNN,k);
129 %end
130 %tz(k)=tz(k)/Nx;
131 %end
132 %
133 %tzmax=max(tz);
134 %tzmin=min(tz);
135 %
136 %kk=zeros(Nz-5,1);
137 %tza=zeros(Nz-5,1);
138 %for k=1:Nz-5
139 %kk(k)=k;
140 %tza(k)=tz(k)-tzmin;
141 %end
142 %
143 %logp1=polyfit(kk,log(tza),1);
144 %logpred1=2.71.^polyval(logp1,kk);
145 %figure
146 %semilogy(kk,logpred1,'-',kk,tza,'+');
147 %grid on
148 %
149 %h0=-1/logp1(1)
150

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