/[MITgcm]/MITgcm_contrib/high_res_cube/eddy_flux/calcUVBave.m
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Contents of /MITgcm_contrib/high_res_cube/eddy_flux/calcUVBave.m

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Revision 1.2 - (show annotations) (download)
Fri Aug 6 04:37:18 2004 UTC (20 years, 11 months ago) by edhill
Branch: MAIN
Changes since 1.1: +5 -2 lines
 o add mask

1 function m = calcUVBave(Spat, Tpat, Upat, Vpat, ilist, nlay, ne)
2
3 % Function m = calcTBave(Spat, Tpat, Upat, Vpat, ilist, nlay, ne)
4 %
5 %
6 % INPUTS
7 % Tpat string containing T-data file pattern
8 % Upat string containing U-data file pattern
9 % Vpat string containing V-data file pattern
10 % ilist list of iteration values
11 % nlay number of z layers
12 % ne number of values alone each edge of each face
13 %
14 % OUTPUTS
15 % m output array of dimension ns*nps
16
17 if nargin ~= 7
18 disp('Error: wrong number of arguments')
19 exit
20 end
21
22 deltatT = 1200; % model time step size (s)
23 tavefreq = 259200; % averaging period (s)
24 startDate = datenum(1992,1,1); % model integration starting date
25
26 oldyear = -1;
27 newyear = oldyear;
28
29 nps = 6 * ne*ne;
30 tx = 85;
31 ty = 85;
32 nt = ne*ne*6/(tx*ty);
33 cx = ne;
34 cy = ne;
35 nz = 1;
36
37 delR = [
38 10.00, 10.00, 10.00, 10.00, 10.00, 10.00, 10.00, 10.01, ...
39 10.03, 10.11, 10.32, 10.80, 11.76, 13.42, 16.04 , 19.82, 24.85, ...
40 31.10, 38.42, 46.50, 55.00, 63.50, 71.58, 78.90, 85.15, 90.18, ...
41 93.96, 96.58, 98.25, 99.25,100.01,101.33,104.56,111.33,122.83, ...
42 139.09,158.94,180.83,203.55,226.50,249.50,272.50,295.50,318.50, ...
43 341.50,364.50,387.50,410.50,433.50,456.50 ];
44 R = cumsum(delR) - 0.5*delR;
45
46 il = 1;
47 for il = 1:nlay
48
49 a = sprintf('Slice: %g',il);
50 % disp(a);
51
52 % Zero the accumulators
53 nm = 0;
54 mb = zeros(ne,ne,6);
55 mbm1 = zeros(ne,ne,6);
56 mbu = zeros(ne,ne,6);
57 mbv = zeros(ne,ne,6);
58
59 it = 1;
60 for it = 1:length(ilist)
61
62 iter = ilist(it);
63 str = datestr(startDate + (iter*deltatT-tavefreq/2)/60/60/24);
64 dv = datevec(startDate + (iter*deltatT-tavefreq/2)/60/60/24);
65 newyear = dv(1);
66
67 sfname = sprintf(Spat, ilist(it));
68 tfname = sprintf(Tpat, ilist(it));
69 ufname = sprintf(Upat, ilist(it));
70 vfname = sprintf(Vpat, ilist(it));
71 disp([ a ' ' str ' ' tfname ]);
72 sfid = fopen(sfname, 'r', 'ieee-be');
73 tfid = fopen(tfname, 'r', 'ieee-be');
74 ufid = fopen(ufname, 'r', 'ieee-be');
75 vfid = fopen(vfname, 'r', 'ieee-be');
76 offset = (il - 1)*nps*4;
77
78 % Convert the horrible JPL mdsio layout to six sane faces
79 fseek(sfid, offset, 'bof');
80 scube = unmangleJPL1( reshape(fread(sfid, nps, 'real*4'),tx*nt,ty), ...
81 ne, tx );
82
83 fseek(tfid, offset, 'bof');
84 tcube = unmangleJPL1( reshape(fread(tfid, nps, 'real*4'),tx*nt,ty), ...
85 ne, tx );
86
87 fseek(ufid, offset, 'bof');
88 ucube = unmangleJPL1( reshape(fread(ufid, nps, 'real*4'),tx*nt,ty), ...
89 ne, tx );
90
91 fseek(vfid, offset, 'bof');
92 vcube = unmangleJPL1( reshape(fread(vfid, nps, 'real*4'),tx*nt,ty), ...
93 ne, tx );
94
95 fclose(sfid);
96 fclose(tfid);
97 fclose(ufid);
98 fclose(vfid);
99
100 % Compute the density
101 bcube = zeros(size(scube));
102 bcubem1 = zeros(size(scube));
103 for icf = 1:6
104 % pressure_for_eos.F :
105 % locPres(i,j) = -rhoConst*rC(k)*gravity*maskC(i,j,k,bi,bj)
106 % rhoConst = 9.997999999999999E+02 /* Ref density ( kg/m^3 ) */
107 % gravity = 9.810000000000000E+00 /* Grav accel ( m/s^2 ) */
108 p = 9.998*10^2 * 9.81 * R(il) * 0.0001;
109 bcube(:,:,icf) = eh3densjmd95( squeeze(scube(:,:,icf)), ...
110 squeeze(tcube(:,:,icf)), p );
111 if il > 1
112 p = -9.998*10^2 * 9.81 * R(il-1) * 0.0001;
113 bcubem1(:,:,icf) = eh3densjmd95( scube(:,:,icf), ...
114 tcube(:,:,icf), p );
115 end
116 end
117 tmask = double(tcube ~= 0.0);
118 bcube = bcube .* tmask;
119 bcubem1 = bcubem1 .* tmask;
120
121 % Fill the (ne+1)*(ne+1) grid with B,T values
122 ni = ne; nip1 = ni + 1;
123 nj = ne; njp1 = nj + 1;
124 bcubep1 = zeros( [ nip1 njp1 6 ] );
125 for icf = 1:6
126 bcubep1(2:nip1,2:njp1,icf) = bcube(:,:,icf);
127 end
128
129 % Do the upwind-edge B exchanges
130 bcubep1(1,2:njp1,1) = bcube(ni:-1:1,nj,5); % -
131 bcubep1(2:nip1,1,1) = bcube(1:ni,nj,6); % -
132 bcubep1(1,2:njp1,2) = bcube(ni,1:nj,1); % -
133 bcubep1(2:nip1,1,2) = bcube(ni,nj:-1:1,6); % -
134 bcubep1(1,2:njp1,3) = bcube(ni:-1:1,nj,1); % -
135 bcubep1(2:nip1,1,3) = bcube(1:ni,nj,2); % -
136 bcubep1(1,2:njp1,4) = bcube(ni,1:nj,3); % -
137 bcubep1(2:nip1,1,4) = bcube(ni,nj:-1:1,2); % -
138 bcubep1(1,2:njp1,5) = bcube(ni:-1:1,nj,3); % -
139 bcubep1(2:nip1,1,5) = bcube(1:ni,nj,4); % -
140 bcubep1(1,2:njp1,6) = bcube(ni,1:nj,5); % -
141 bcubep1(2:nip1,1,6) = bcube(ni,nj:-1:1,4); % -
142
143 % Get B values on the U grid points
144 masku = 1.0 - abs(diff(double(bcubep1(2:nip1,:,:) == 0.0),1,2));
145 diffu = 0.5*diff(bcubep1(2:nip1,:,:),1,2);
146 bonu = bcube(:,:,:) + masku.*diffu;
147
148 % Get B values on the V grid points
149 maskv = 1.0 - abs(diff(double(bcubep1(:,2:nip1,:) == 0.0),1,1));
150 diffv = 0.5*diff(bcubep1(:,2:nip1,:),1,1);
151 bonv = bcube(:,:,:) + maskv.*diffv;
152
153 if ((newyear ~= oldyear) && (nm > 0)) || (it == length(ilist))
154
155 % Write if its a new year or the last of all entries
156 bout = sprintf('b-ave-%d', oldyear);
157 mout = sprintf('bm1-ave-%d', oldyear);
158 uout = sprintf('ub-ave-%d', oldyear);
159 vout = sprintf('vb-ave-%d', oldyear);
160 disp([' ==> Writing files "' bout '" "' mout '" "' uout '" "' vout '"']);
161 bido = fopen(bout, 'a', 'ieee-be');
162 mido = fopen(mout, 'a', 'ieee-be');
163 uido = fopen(uout, 'a', 'ieee-be');
164 vido = fopen(vout, 'a', 'ieee-be');
165 mb = mb / nm;
166 mbm1 = mbm1 / nm;
167 mbu = mbu / nm;
168 mbv = mbv / nm;
169 fwrite(bido, mb, 'real*4');
170 fwrite(mido, mbm1, 'real*4');
171 fwrite(uido, mbu, 'real*4');
172 fwrite(vido, mbv, 'real*4');
173 fclose(bido);
174 fclose(mido);
175 fclose(uido);
176 fclose(vido);
177
178 % Re-zero the accumulators
179 mb = zeros(ne,ne,6);
180 mbm1 = zeros(ne,ne,6);
181 mbu = zeros(ne,ne,6);
182 mbv = zeros(ne,ne,6);
183 nm = 0;
184
185 end
186
187 % Accumulate partial sums
188 mb = mb + bcube;
189 mbm1 = mbm1 + bcubem1;
190 mbu = mbu + bonu.*ucube;
191 mbv = mbv + bonv.*vcube;
192 nm = nm + 1;
193
194 oldyear = newyear;
195
196 end
197 end

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