| 1 |
mlosch |
1.1 |
clear all |
| 2 |
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| 3 |
mlosch |
1.2 |
new = 'input.shelfice'; |
| 4 |
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input = 'input'; |
| 5 |
mlosch |
1.1 |
eostype = 'mdjwf'; |
| 6 |
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| 7 |
mlosch |
1.2 |
nx = 45; |
| 8 |
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ny = nx*18; |
| 9 |
mlosch |
1.1 |
nz = 23; |
| 10 |
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nt = 12; |
| 11 |
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| 12 |
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load FMT |
| 13 |
mlosch |
1.2 |
load HN |
| 14 |
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load ZN |
| 15 |
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% $$$ hn = mit_readfield(fullfile(input,'bathy_llc_p90.bin'),[nx ny],fmt); |
| 16 |
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% $$$ hnz = mit_readfield(fullfile(input,'shelfice_bath.bin'),[nx ny],fmt); |
| 17 |
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% $$$ zn = mit_readfield(fullfile(input,'shelfice_topo.bin'),[nx ny],fmt); |
| 18 |
mlosch |
1.1 |
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| 19 |
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h = hn+hnz; |
| 20 |
mlosch |
1.2 |
mit_writefield(fullfile(new,'bathy_llc_p90.bin'),mdsiocompact(hn),fmt); |
| 21 |
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mit_writefield(fullfile(new,'bathy_llc_p90.shice'),mdsiocompact(h),fmt); |
| 22 |
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mit_writefield(fullfile(new,'shelfice_topo.bin'),mdsiocompact(zn),fmt); |
| 23 |
mlosch |
1.1 |
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| 24 |
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% create hydrographic fields |
| 25 |
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levt = mit_readfield(fullfile(input,'lev_t.bin'),[nx ny nz nt],fmt); |
| 26 |
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levs = mit_readfield(fullfile(input,'lev_s.bin'),[nx ny nz nt],fmt); |
| 27 |
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is = find(zn~=0); |
| 28 |
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[ix,iy] = find(zn~=0); |
| 29 |
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[t,s] = shelfice_hydrography(ix,iy,is,levt,levs); |
| 30 |
mlosch |
1.2 |
mit_writefield(fullfile(new,'lev_t.shice'),mdsiocompact(t),fmt); |
| 31 |
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mit_writefield(fullfile(new,'lev_s.shice'),mdsiocompact(s),fmt); |
| 32 |
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| 33 |
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% create hydrographic fields |
| 34 |
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levt = mdsiocompact(mit_readfield(fullfile(input,'lev_t.init'),[nx ny nz],fmt),0); |
| 35 |
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levs = mdsiocompact(mit_readfield(fullfile(input,'lev_s.init'),[nx ny nz],fmt),0); |
| 36 |
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is = find(zn~=0); |
| 37 |
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[ix,iy] = find(zn~=0); |
| 38 |
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[t,s] = shelfice_hydrography(ix,iy,is,levt,levs); |
| 39 |
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mit_writefield(fullfile(new,'lev_t.shice.init'),mdsiocompact(t),fmt); |
| 40 |
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mit_writefield(fullfile(new,'lev_s.shice.init'),mdsiocompact(s),fmt); |
| 41 |
mlosch |
1.1 |
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| 42 |
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% create geopotential anomaly |
| 43 |
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gravity = 9.81; |
| 44 |
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rho0 = 1035; |
| 45 |
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tol = 0; |
| 46 |
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si2dbar = 1e-4; |
| 47 |
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phiHydC = zeros(nz,length(ix)); |
| 48 |
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phiHydF = zeros(nz+1,length(ix)); |
| 49 |
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disp('compute geopotential anomaly') |
| 50 |
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load VGRID |
| 51 |
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for ks=1:length(ix) |
| 52 |
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t0 = squeeze(mean(t(ix(ks),iy(ks),:,:),4)); |
| 53 |
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s0 = squeeze(mean(s(ix(ks),iy(ks),:,:),4)); |
| 54 |
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% compute potential anomaly exactly as in code |
| 55 |
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% for that we need the correct density |
| 56 |
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rho = []; |
| 57 |
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p = -zc(:)*gravity*rho0*si2dbar; |
| 58 |
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dp = p; |
| 59 |
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tol1 = 1; |
| 60 |
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tol2 = 2; |
| 61 |
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kw = 0; |
| 62 |
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while tol1 > tol |
| 63 |
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kw = kw+1; |
| 64 |
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if strcmp(eostype,'mdjwf') |
| 65 |
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rho = [rho densmdjwf(s0,t0,p(:,end))]; |
| 66 |
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else |
| 67 |
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error(['unknown eostype: ' eostype]); |
| 68 |
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end |
| 69 |
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p = [p -zc(:).*rho(:,end)*gravity*si2dbar]; |
| 70 |
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dp = p(:,end)-p(:,end-1); |
| 71 |
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tol2 = tol1; |
| 72 |
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tol1 = sqrt(sum(dp.^2)); |
| 73 |
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if tol1==tol2; break; end; |
| 74 |
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end |
| 75 |
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% now intergrate |
| 76 |
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drho = rho(:,end)-rho0; |
| 77 |
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for k=1:nz |
| 78 |
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drm = .5*dz(k); |
| 79 |
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if k==1; drm = zf(k)-zc(k); end |
| 80 |
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if k==nz; |
| 81 |
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drp = zc(k)-zf(k+1); |
| 82 |
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else |
| 83 |
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drp = .5*dz(k+1); |
| 84 |
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end |
| 85 |
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phiHydC(k,ks)=phiHydF(k,ks) + drm*gravity*drho(k)/rho0; |
| 86 |
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phiHydF(k+1,ks)=phiHydC(k,ks) +drp*gravity*drho(k)/rho0; |
| 87 |
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end |
| 88 |
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% find the appropriate level |
| 89 |
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zloc = zn(is(ks)); |
| 90 |
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kl = max(find(zloc < zf)); |
| 91 |
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ph(ks) = phiHydF(kl,ks); |
| 92 |
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end |
| 93 |
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| 94 |
mlosch |
1.2 |
pload = 0*hn; |
| 95 |
mlosch |
1.1 |
for ks=1:length(ix) |
| 96 |
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pload(ix(ks),iy(ks)) = -ph(ks)*rho0; |
| 97 |
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end |
| 98 |
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| 99 |
mlosch |
1.2 |
mit_writefield(fullfile(new,['pload.' eostype]),mdsiocompact(pload),fmt); |
| 100 |
mlosch |
1.1 |
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