| 1 |
# |
| 2 |
# Ed Hill |
| 3 |
# Thu Dec 18 13:51:19 EST 2003 |
| 4 |
|
| 5 |
# Mask out wind forcing curl data over land (so only the sea data is |
| 6 |
# left) using the WORLDBATH elevation data from Ingrid. |
| 7 |
|
| 8 |
# URLs: |
| 9 |
|
| 10 |
# http://iridl.ldeo.columbia.edu/expert/SOURCES/.TRENBERTH/.Annual/.taux |
| 11 |
# http://iridl.ldeo.columbia.edu/expert/SOURCES/.TRENBERTH/.Annual/.taux |
| 12 |
|
| 13 |
# http://ingrid.mit.edu/SOURCES/.WORLDBATH/.bath/ |
| 14 |
|
| 15 |
|
| 16 |
matlab -nojvm |
| 17 |
clear all |
| 18 |
|
| 19 |
ncload('TRENBERTH_taux.cdf') |
| 20 |
ncload('TRENBERTH_tauy.cdf') |
| 21 |
cx = mod(X+360.0,360.0); |
| 22 |
cy = Y; |
| 23 |
origX = X; |
| 24 |
origY = Y; |
| 25 |
|
| 26 |
ncload('WORLDBATH_data.cdf') |
| 27 |
bx = X; |
| 28 |
by = Y; |
| 29 |
clear X Y |
| 30 |
|
| 31 |
mask = zeros(size(taux)); |
| 32 |
nx = size(taux,2); |
| 33 |
ny = size(taux,1); |
| 34 |
ib = zeros(1,nx); |
| 35 |
jb = zeros(1,ny); |
| 36 |
for i = 1:nx, |
| 37 |
ib(i) = round(mean([ max(find(bx < cx(i))) min(find(bx > cx(i))) ])); |
| 38 |
end |
| 39 |
for j = 1:ny, |
| 40 |
jb(j) = round(mean([ max(find(by < cy(j))) min(find(by > cy(j))) ])); |
| 41 |
end |
| 42 |
|
| 43 |
b_tau = zeros(size(taux)); |
| 44 |
for j = 1:ny, |
| 45 |
b_tau(j,:) = bath(jb(j),ib); |
| 46 |
end |
| 47 |
b_mask = double(b_tau < -50.0); |
| 48 |
|
| 49 |
surf(b_mask), view(2), shading interp |
| 50 |
|
| 51 |
m_taux = taux .* b_mask; |
| 52 |
m_tauy = tauy .* b_mask; |
| 53 |
|
| 54 |
idu = 'tau_x'; |
| 55 |
idv = 'tau_y'; |
| 56 |
units = 'newtons/m2'; |
| 57 |
|
| 58 |
desc = [ 'TRENBERTH tau data with a zero-mask over land.' ]; |
| 59 |
ncname = [ 'TRENBERTH_tau_masked.nc' ]; |
| 60 |
nc = netcdf(ncname, 'clobber'); |
| 61 |
nc.reference = desc; |
| 62 |
nc.author = 'Ed Hill <eh3@mit.edu>'; |
| 63 |
nc.date = 'Dec 12, 2003'; |
| 64 |
nc('lon') = length(cx); |
| 65 |
nc('lat') = length(cy); |
| 66 |
nc{'lon'} = 'lon'; |
| 67 |
nc{'lat'} = 'lat'; |
| 68 |
nc{ idu } = { 'lat', 'lon' }; |
| 69 |
nc{ idv } = { 'lat', 'lon' }; |
| 70 |
nc{'lon'}.uniquename = 'lon'; |
| 71 |
nc{'lon'}.long_name = 'longitude'; |
| 72 |
nc{'lon'}.gridtype = ncint(1); |
| 73 |
nc{'lat'}.uniquename = 'lat'; |
| 74 |
nc{'lat'}.long_name = 'latitude'; |
| 75 |
nc{'lat'}.gridtype = ncint(0); |
| 76 |
nc{'lon'}.units = 'degree_east'; |
| 77 |
nc{'lat'}.units = 'degree_north'; |
| 78 |
nc{ idu }.units = units; |
| 79 |
nc{ idu }.long_name = idu; |
| 80 |
nc{ idu }.missing_value = ncdouble(NaN); |
| 81 |
nc{ idu }.FillValue_ = ncdouble(-9999.); |
| 82 |
nc{ idv }.units = units; |
| 83 |
nc{ idv }.long_name = idv; |
| 84 |
nc{ idv }.missing_value = ncdouble(NaN); |
| 85 |
nc{ idv }.FillValue_ = ncdouble(-9999.); |
| 86 |
nc{'lon'}(:) = origX; |
| 87 |
nc{'lat'}(:) = origY; |
| 88 |
nc{ idu }(:) = m_taux; |
| 89 |
nc{ idv }(:) = m_tauy; |
| 90 |
nc = close(nc); |
| 91 |
|
| 92 |
scp TRENBERTH_tau_masked.nc channel.mit.edu:/home/edhill/TRENBERTH_tau_masked/ |
| 93 |
|
| 94 |
# AS ROOT ON channel.mit.edu : |
| 95 |
cd /home/benno/ingrid/data/MIT/LOCAL/PEOPLE/EH3 |
| 96 |
mkdir TRENBERTH_tau_masked |
| 97 |
cd TRENBERTH_tau_masked |
| 98 |
ln -s /home/edhill/TRENBERTH_tau_masked/* |
| 99 |
|
| 100 |
% OK, *THIS* (below) is the correct format for Ingrid |
| 101 |
|
| 102 |
desc = [ 'TRENBERTH tau data with a zero-mask over land.' ]; |
| 103 |
ncname = [ 'TRENBERTH_tau_masked_XY.nc' ]; |
| 104 |
nc = netcdf(ncname, 'clobber'); |
| 105 |
nc.reference = desc; |
| 106 |
nc.author = 'Ed Hill <eh3@mit.edu>'; |
| 107 |
nc.date = 'Dec 12, 2003'; |
| 108 |
nc('X') = length(cx); |
| 109 |
nc('Y') = length(cy); |
| 110 |
nc{'X'} = 'X'; |
| 111 |
nc{'Y'} = 'Y'; |
| 112 |
nc{ idu } = { 'Y', 'X' }; |
| 113 |
nc{ idv } = { 'Y', 'X' }; |
| 114 |
nc{'X'}.uniquename = 'X'; |
| 115 |
nc{'X'}.long_name = 'longitude'; |
| 116 |
nc{'X'}.gridtype = ncint(1); |
| 117 |
nc{'Y'}.uniquename = 'Y'; |
| 118 |
nc{'Y'}.long_name = 'latitude'; |
| 119 |
nc{'Y'}.gridtype = ncint(0); |
| 120 |
nc{'X'}.units = 'degree_east'; |
| 121 |
nc{'Y'}.units = 'degree_north'; |
| 122 |
nc{ idu }.units = units; |
| 123 |
nc{ idu }.long_name = idu; |
| 124 |
nc{ idu }.missing_value = ncdouble(NaN); |
| 125 |
nc{ idu }.FillValue_ = ncdouble(-9999.); |
| 126 |
nc{ idv }.units = units; |
| 127 |
nc{ idv }.long_name = idv; |
| 128 |
nc{ idv }.missing_value = ncdouble(NaN); |
| 129 |
nc{ idv }.FillValue_ = ncdouble(-9999.); |
| 130 |
nc{'X'}(:) = origX; |
| 131 |
nc{'Y'}(:) = origY; |
| 132 |
nc{ idu }(:) = m_taux; |
| 133 |
nc{ idv }(:) = m_tauy; |
| 134 |
nc = close(nc); |
| 135 |
|
| 136 |
|
| 137 |
!scp TRENBERTH_tau_masked_XY.nc channel.mit.edu:/home/edhill/TRENBERTH_tau_masked/ |
| 138 |
|
| 139 |
|
| 140 |
% Mask out (zero) a region for the Pacific basin |
| 141 |
matlab -nojvm |
| 142 |
clear all |
| 143 |
|
| 144 |
ncload('TRENBERTH_curl_all.cdf') |
| 145 |
cx = mod(X+360.0,360.0); |
| 146 |
cy = Y; |
| 147 |
origX = X; |
| 148 |
origY = Y; |
| 149 |
|
| 150 |
ncload('WORLDBATH_data.cdf') |
| 151 |
bx = X; |
| 152 |
by = Y; |
| 153 |
clear X Y |
| 154 |
|
| 155 |
mask = zeros(size(ratio)); |
| 156 |
nx = size(ratio,2); |
| 157 |
ny = size(ratio,1); |
| 158 |
ib = zeros(1,nx); |
| 159 |
jb = zeros(1,ny); |
| 160 |
for i = 1:nx, |
| 161 |
ib(i) = round(mean([ max(find(bx < cx(i))) min(find(bx > cx(i))) ])); |
| 162 |
end |
| 163 |
for j = 1:ny, |
| 164 |
jb(j) = round(mean([ max(find(by < cy(j))) min(find(by > cy(j))) ])); |
| 165 |
end |
| 166 |
|
| 167 |
b_tau = zeros(size(ratio)); |
| 168 |
for j = 1:ny, |
| 169 |
b_tau(j,:) = bath(jb(j),ib); |
| 170 |
end |
| 171 |
b_mask = double(b_tau < -50.0); |
| 172 |
|
| 173 |
surf(b_mask), view(2), shading interp |
| 174 |
|
| 175 |
pacm = b_mask; |
| 176 |
surf(pacm), view(2), shading interp |
| 177 |
pacm(:,46:63) = 0.0; |
| 178 |
pacm(64:72,1:50) = 0.0; |
| 179 |
pacm(43:70,35:50) = 0.0; |
| 180 |
pacm(40:70,40:50) = 0.0; |
| 181 |
surf(pacm), view(2), shading interp |
| 182 |
|
| 183 |
curlmasked = ratio .* pacm; |
| 184 |
|
| 185 |
id = 'curl' |
| 186 |
desc = [ 'TRENBERTH curl data with a zero-mask for Pacific Basin integration.' ]; |
| 187 |
ncname = [ 'TRENBERTH_curl_masked.nc' ]; |
| 188 |
nc = netcdf(ncname, 'clobber'); |
| 189 |
nc.reference = desc; |
| 190 |
nc.author = 'Ed Hill <eh3@mit.edu>'; |
| 191 |
nc.date = 'Dec 12, 2003'; |
| 192 |
nc('X') = length(cx); |
| 193 |
nc('Y') = length(cy); |
| 194 |
nc{'X'} = 'X'; |
| 195 |
nc{'Y'} = 'Y'; |
| 196 |
nc{ id } = { 'Y', 'X' }; |
| 197 |
nc{'X'}.uniquename = 'X'; |
| 198 |
nc{'X'}.long_name = 'longitude'; |
| 199 |
nc{'X'}.gridtype = ncint(1); |
| 200 |
nc{'Y'}.uniquename = 'Y'; |
| 201 |
nc{'Y'}.long_name = 'latitude'; |
| 202 |
nc{'Y'}.gridtype = ncint(0); |
| 203 |
nc{'X'}.units = 'degree_east'; |
| 204 |
nc{'Y'}.units = 'degree_north'; |
| 205 |
nc{ id }.units = 'kilogram meter-2 second-2'; |
| 206 |
nc{ id }.long_name = id; |
| 207 |
nc{ id }.missing_value = ncdouble(NaN); |
| 208 |
nc{ id }.FillValue_ = ncdouble(-9999.); |
| 209 |
nc{'X'}(:) = origX; |
| 210 |
nc{'Y'}(:) = origY; |
| 211 |
nc{ id }(:) = curlmasked; |
| 212 |
nc = close(nc); |
| 213 |
|
| 214 |
!scp TRENBERTH_curl_masked.nc channel.mit.edu:/home/edhill/TRENBERTH_tau_masked/ |
Parent Directory
| 
Revision Log
| 
Revision Graph