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% |
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% $Id: assemble_SH.m,v 1.2 2006/01/31 03:44:54 edhill Exp $ |
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% |
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% Ed Hill |
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% |
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% Generate the APE SH01 -- SH30 fields: |
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% |
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% For all time steps: |
| 9 |
% For all variables: |
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% For all facets: |
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% compute the "derived" fields: |
| 12 |
% sum: |
| 13 |
% Compute the averages from the sums: |
| 14 |
% Rotate vector components as necessary: |
| 15 |
% Convert units as necessary: |
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% Regrid onto lat-lon: |
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% Write netCDF output with all attributes: |
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% |
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|
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%====================================================================== |
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% |
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% Define the connections between the APE "SH" variables and the |
| 23 |
% MITgcm diagnostics output |
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% |
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nfacets = 6; |
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months.i_start = 7; |
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months.i_end = 42; |
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bname = 'data/SHave.t%03d.nc'; |
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gname = 'data/grid.t%03d.nc'; |
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r_con_name = 'scrip_regrid/rmp_CS32_to_LL128x64_conserv.nc'; |
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r_dwt_name = 'scrip_regrid/rmp_CS32_to_LL128x64_distwgt.nc'; |
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oname = { 'SH_fields.nc' }; |
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|
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flags.regrid_type_for_vec = 2; |
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flags.debug = 0; |
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|
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% Get the following from: |
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% ! (cd ../../ape_data_specs/ ; ./sh_parse.sh) |
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vars = {}; |
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vars{1} = {'SH01','sh_sw_toai','RADSWT','toa_incoming_shortwave_flux','W m-2','-','1'}; |
| 41 |
vars{2} = {'SH02','sh_sw_toar','OSR','toa_outgoing_shortwave_flux','W m-2','-','-1'}; |
| 42 |
vars{3} = {'SH04','sh_lw_toa','OLR','toa_outgoing_longwave_flux','W m-2','-','1'}; |
| 43 |
vars{4} = {'SH07','sh_cld_frac','CLDFRC','cloud_area_fraction','1','-','1'}; |
| 44 |
vars{5} = {'SH08','sh_cldw','---','atmosphere_cloud_condensed_water_co','kg m-2','-','1'}; |
| 45 |
vars{6} = {'SH09','sh_cldi','---','atmosphere_cloud_ice_content','kg m-2','-','1'}; |
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vars{7} = {'SH11','sh_cppn','PRECON','convective_precipitation_flux','kg m-2 s-1','-','0.000011574074'}; |
| 47 |
vars{8} = {'SH12','sh_dppn','SH12','large_scale_precipitation_flux','kg m-2 s-1','-','0.000011574074'}; |
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vars{9} = {'SH13','sh_evap','EVAP','evaporation_flux','kg m-2 s-1','-','0.000011574074'}; |
| 49 |
vars{10} = {'SH15','sh_sswi','SH15','surface_downwelling_shortwave_flux','W m-2','-','1'}; |
| 50 |
vars{11} = {'SH16','sh_sswr','SH16','surface_upwelling_shortwave_flux','W m-2','-','-1'}; |
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vars{12} = {'SH18','sh_slwd','LWGDOWN','surface_downwelling_longwave_flux','W m-2','-','-1'}; |
| 52 |
vars{13} = {'SH19','sh_slwu','LWGUP','surface_upwelling_longwave_flux','W m-2','-','1'}; |
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vars{14} = {'SH21','sh_slh','EFLUX','surface_upward_latent_heat_flux','W m-2','-','1'}; |
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vars{15} = {'SH22','sh_ssh','HFLUX','surface_upward_sensible_heat_flux','W m-2','-','1'}; |
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vars{16} = {'SH24','sh_ts2m','T2M','surface_air_temperature','K','-','1'}; |
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vars{17} = {'SH25','sh_q2m','Q2M','specific_humidity','1','-','0.001'}; |
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vars{18} = {'SH26','sh_tauu','UFLUX','surface_downward_eastward_stress','Pa','u','-1'}; |
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vars{19} = {'SH27','sh_tauv','VFLUX','surface_downward_northward_stress','Pa','v','-1'}; |
| 59 |
vars{20} = {'SH28','sh_u10m','U10M','eastward_wind','m s-1','u','1'}; |
| 60 |
vars{21} = {'SH29','sh_v10m','V10M','northward_wind','m s-1','v','1'}; |
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vars{22} = {'SH30','sh_ps','PS','surface_air_pressure','Pa','-','100'}; |
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|
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|
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|
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%====================================================================== |
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% |
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% Open the input files and get the (minimum) number of time steps |
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% available across all the files |
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% |
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disp('Finding available time steps') |
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|
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ncl = {}; |
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nTmin = 0; |
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ifacet = 1; |
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for ifacet = 1:nfacets |
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fname = sprintf(bname,ifacet); |
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nc = netcdf(fname, 'nowrite'); |
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ncl{ifacet} = nc; |
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T = nc{'T'}(:); |
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nT = length(T); |
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if (ifacet == 1) |
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nTmin = nT; |
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else |
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nTmin = min(nTmin,nT); |
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end |
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nc = []; |
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end |
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disp(sprintf(' total iterations found = %d',nTmin)); |
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|
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|
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%====================================================================== |
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% |
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% Compute the derived fields and the temporal sums of all fields on |
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% the original MITgcm grid |
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% |
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disp('Computing Sums') |
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|
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dat = []; |
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iz = 1; |
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it = 1; |
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iv = 1; |
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ifacet = 1; |
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for it = [ 1 ] % months.i_start:min(nTmin,months.i_end) |
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disp(sprintf(' iteration = %d',it)); |
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for iv = 1:length(vars) |
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for ifacet = 1:nfacets |
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|
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% cull unknown variables |
| 109 |
if ( vars{iv}{3}(1) == '-' ) |
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continue |
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end |
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% disp(sprintf('%d, %d',iv,ifacet)); |
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|
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% skip over computed quantities |
| 115 |
if strcmp( vars{iv}{1} , vars{iv}{3} ) |
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continue |
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end |
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|
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% WARN about missing variables |
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nc = ncl{ifacet}; |
| 121 |
if prod(size(nc{vars{iv}{3}})) == 0 |
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if it == months.i_start |
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str = 'var "%s" does not exist in file "%s"'; |
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disp(sprintf([' Warning: ' str], vars{iv}{3}, name(nc))); |
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end |
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continue |
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end |
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|
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if it == 1 |
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dat(iv,ifacet).n = 1; |
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dat(iv,ifacet).a = squeeze( nc{ vars{iv}{3} }(it,iz,:,:) ); |
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else |
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dat(iv,ifacet).n = dat(iv,ifacet).n + 1; |
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dat(iv,ifacet).a = dat(iv,ifacet).a + ... |
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squeeze( nc{ vars{iv}{3} }(it,iz,:,:) ); |
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end |
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|
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end |
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end |
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|
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% fill in the derived fields |
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for iv = 1:length(vars) |
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for ifacet = 1:nfacets |
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tmp = []; |
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nc = ncl{ifacet}; |
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|
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if strncmp(vars{iv}{1},'SH12',4) |
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% SH12 = PREACC - PRECON |
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tmp = squeeze( nc{ 'PREACC' }(it,iz,:,:) ) ... |
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- squeeze( nc{ 'PRECON' }(it,iz,:,:) ); |
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end |
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|
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if strncmp(vars{iv}{1},'SH15',4) || strncmp(vars{iv}{1},'SH16',4) |
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albedo = ( squeeze( nc{ 'ALBNIRDF' }(it,iz,:,:)) ... |
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+ squeeze( nc{ 'ALBVISDF' }(it,iz,:,:)) ) ./ 2.0; |
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if vars{iv}{1} == 'SH15' |
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% SH15 = RADSWG/(1 - ALBEDO) |
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tmp = squeeze( nc{ 'RADSWG' }(it,iz,:,:) ) ... |
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./ (1.0 - albedo); |
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end |
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if strncmp(vars{iv}{1},'SH16',4) |
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% SH16 = RADSWG*(1/(1 - ALBEDO) - 1) |
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tmp = squeeze( nc{ 'RADSWG' }(it,iz,:,:) ) ... |
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.* (1.0./(1.0 - albedo) - 1.0); |
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end |
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end |
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|
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if prod(size(tmp)) > 0 |
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if it == 1 |
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dat(iv,ifacet).n = 1; |
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dat(iv,ifacet).a = tmp; |
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else |
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dat(iv,ifacet).n = dat(iv,ifacet).n + 1; |
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dat(iv,ifacet).a = dat(iv,ifacet).a + tmp; |
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end |
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end |
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|
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end |
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end |
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end |
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clear tmp |
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|
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% close the input files |
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for ifacet = 1:nfacets |
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nc = close( ncl{ifacet} ); |
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end |
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clear ncl; |
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|
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%====================================================================== |
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% |
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% Compute the averages from the temporal sums |
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% |
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disp('Computing Averages from Sums') |
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|
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ave = []; |
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for iv = 1:length(vars) |
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ind = length(ave) + 1; |
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for ifacet = 1:nfacets |
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if length(dat(iv,ifacet).n) == 0 |
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continue |
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end |
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ave(ind).v(:,:,ifacet) = dat(iv,ifacet).a ./ dat(iv,ifacet).n; |
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ave(ind).ivar = iv; |
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end |
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end |
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|
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clear dat; |
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|
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%====================================================================== |
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% |
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% Rotate vector components & convert units |
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% |
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clear ig; |
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gvars = { 'XC','YC','dxF','dyF','rA','XG','YG','dxV', ... |
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'dyU','rAz','dxC','dyC','rAw','rAs','dxG','dyG' }; |
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for iface = 1:6 |
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fname = sprintf(gname, iface); |
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nc = netcdf(fname, 'nowrite'); |
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if iface == 1 |
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ig.ne = length(nc('X')); |
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end |
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for jj = 1:length(gvars) |
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comm = [ 'ig.' gvars{jj} '(:,:,iface) = nc{''' ... |
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gvars{jj} '''}(:);']; |
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eval(comm); |
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end |
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nc = close(nc); |
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end |
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|
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ne = ig.ne; |
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n1 = ne - 1; |
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dux = zeros(size(ig.XC)); |
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duy = zeros(size(ig.XC)); |
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dvx = zeros(size(ig.XC)); |
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dvy = zeros(size(ig.XC)); |
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% dux(:,:,:) = diff(ig.XG(:,1:ne,:),1,1); |
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% dvx(:,:,:) = diff(ig.XG(1:ne,:,:),1,2); |
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% duy(:,:,:) = diff(ig.YG(:,1:ne,:),1,1); |
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% dvy(:,:,:) = diff(ig.YG(1:ne,:,:),1,2); |
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% |
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% Note the first two dimensions below are permuted relative to the |
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% ordering in the *.mitgrid files (commented-out above). |
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dux(:,:,:) = diff(ig.XG(1:ne,:,:),1,2); |
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dvx(:,:,:) = diff(ig.XG(:,1:ne,:),1,1); |
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duy(:,:,:) = diff(ig.YG(1:ne,:,:),1,2); |
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dvy(:,:,:) = diff(ig.YG(:,1:ne,:),1,1); |
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dux = dux + 360*double(dux < 180); |
| 248 |
dux = dux - 360*double(dux > 180); % squeeze([ min(min(dux)) max(max(dux)) ]) |
| 249 |
duy = duy + 360*double(duy < 180); |
| 250 |
duy = duy - 360*double(duy > 180); % squeeze([ min(min(duy)) max(max(duy)) ]) |
| 251 |
dvx = dvx + 360*double(dvx < 180); |
| 252 |
dvx = dvx - 360*double(dvx > 180); % squeeze([ min(min(dvx)) max(max(dvx)) ]) |
| 253 |
dvy = dvy + 360*double(dvy < 180); |
| 254 |
dvy = dvy - 360*double(dvy > 180); % squeeze([ min(min(dvy)) max(max(dvy)) ]) |
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dut = sqrt(dux.^2 + duy.^2); % squeeze([ min(min(dut)) max(max(dut)) ]) |
| 256 |
dvt = sqrt(dvx.^2 + dvy.^2); % squeeze([ min(min(dvt)) max(max(dvt)) ]) |
| 257 |
ig.llux = dux ./ dut; % squeeze([ min(min(ig.llux)) max(max(ig.llux)) ]) |
| 258 |
ig.lluy = duy ./ dut; % squeeze([ min(min(ig.lluy)) max(max(ig.lluy)) ]) |
| 259 |
ig.llvx = dvx ./ dvt; % squeeze([ min(min(ig.llvx)) max(max(ig.llvx)) ]) |
| 260 |
ig.llvy = dvy ./ dvt; % squeeze([ min(min(ig.llvy)) max(max(ig.llvy)) ]) |
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clear dux duy dvx dvy dut dvt ne n1 |
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|
| 263 |
if flags.regrid_type_for_vec ~= 2 |
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% Vector rotation |
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for ia = 1:length(ave) |
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if strcmp(vars{ ave(ia).ivar }{6}, 'u') |
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% llu = u .* llux + v .* llvx; |
| 268 |
% llv = u .* lluy + v .* llvy; |
| 269 |
llu = ave(ia).v .* ig.llux + ave(ia+1).v .* ig.llvx; |
| 270 |
llv = ave(ia).v .* ig.lluy + ave(ia+1).v .* ig.llvy; |
| 271 |
ave(ia).v = llu; |
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ave(ia+1).v = llv; |
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end |
| 274 |
end |
| 275 |
end |
| 276 |
clear llu llv |
| 277 |
|
| 278 |
% Units conversion |
| 279 |
for ia = 1:length(ave) |
| 280 |
if strcmp(vars{ ave(ia).ivar }{7}, '-') ~= 1 |
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eval(['fac = ' vars{ ave(ia).ivar }{7} ';']); |
| 282 |
if fac ~= 1 |
| 283 |
ave(ia).v = fac .* ave(ia).v; |
| 284 |
end |
| 285 |
end |
| 286 |
end |
| 287 |
|
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%====================================================================== |
| 289 |
% |
| 290 |
% Regrid |
| 291 |
% |
| 292 |
% JMC suggested an evenly spaced Lat-Lon at: 128x64 |
| 293 |
% |
| 294 |
disp('Regridding') |
| 295 |
|
| 296 |
og = []; |
| 297 |
og.nlat = 64; |
| 298 |
og.nlon = 128; |
| 299 |
og.latcell = 180/og.nlat; |
| 300 |
og.loncell = 360/og.nlon; |
| 301 |
og.lat = linspace(-90+og.latcell/2, 90-og.latcell/2, og.nlat); |
| 302 |
og.lon = linspace(0+og.loncell/2, 360-og.loncell/2, og.nlon); |
| 303 |
og.latbnd(:,1) = og.lat - og.latcell/2.0; |
| 304 |
og.latbnd(:,2) = og.lat + og.latcell/2.0; |
| 305 |
og.lonbnd(:,1) = og.lon - og.loncell/2.0; |
| 306 |
og.lonbnd(:,2) = og.lon + og.loncell/2.0; |
| 307 |
|
| 308 |
rgvar = { 'src_address', 'dst_address', 'remap_matrix' }; |
| 309 |
rtype = { { 'con', r_con_name}, {'dwt', r_dwt_name } }; |
| 310 |
for kk = 1:length(rtype) |
| 311 |
nc = netcdf(rtype{kk}{2}, 'nowrite'); |
| 312 |
for jj = 1:length(rgvar) |
| 313 |
comm = sprintf('rgrid.%s.%s = nc{''%s''}(:);',... |
| 314 |
rtype{kk}{1},rgvar{jj},rgvar{jj}); |
| 315 |
eval(comm); |
| 316 |
% disp(comm); |
| 317 |
end |
| 318 |
nc = close(nc); |
| 319 |
end |
| 320 |
|
| 321 |
if ( flags.regrid_type_for_vec > 0 ) |
| 322 |
% >> x=rdmds('XC'); |
| 323 |
% >> y=rdmds('YC'); |
| 324 |
% >> t=rdmds('Ttave.0000513360'); |
| 325 |
% >> xi=-179:2:180;yi=-89:2:90; |
| 326 |
% >> del=cube2latlon_preprocess(x,y,xi,yi); |
| 327 |
% >> ti=cube2latlon_fast(del,t); |
| 328 |
aa_regrid.x = rdmds('aa_regrid/XC'); |
| 329 |
aa_regrid.y = rdmds('aa_regrid/YC'); |
| 330 |
% u = rdmds('aa_regrid/U.0000000000'); |
| 331 |
% v = rdmds('aa_regrid/V.0000000000'); |
| 332 |
% del = cube2latlon_preprocess(LON,LAT,xc,yc); |
| 333 |
% |
| 334 |
% aa_regrid.del = ... |
| 335 |
% cube2latlon_preprocess(aa_regrid.x,aa_regrid.y, ... |
| 336 |
% og.lon,og.lat); |
| 337 |
end |
| 338 |
|
| 339 |
% save zzz |
| 340 |
% zzz |
| 341 |
|
| 342 |
ii = 1; |
| 343 |
for ii = 1:length(ave) |
| 344 |
|
| 345 |
dcp = zeros(prod(size( ave(ii).v )),1); |
| 346 |
nn = 0; |
| 347 |
for kk = 1:size( ave(ii).v, 3 ) |
| 348 |
for jk = 1:size( ave(ii).v, 2 ) |
| 349 |
for ik = 1:size( ave(ii).v, 1 ) |
| 350 |
nn = nn + 1; |
| 351 |
dcp(nn) = ave(ii).v(ik,jk,kk); |
| 352 |
end |
| 353 |
end |
| 354 |
end |
| 355 |
lld = zeros(og.nlat*og.nlon,1); |
| 356 |
|
| 357 |
if ( ( flags.regrid_type_for_vec > 0 ) ... |
| 358 |
&& ( vars{ave(ii).ivar}{6} == 'u' ... |
| 359 |
|| vars{ave(ii).ivar}{6} == 'v' ) ) |
| 360 |
|
| 361 |
if flags.regrid_type_for_vec == 1 |
| 362 |
|
| 363 |
% use distributed weights for vectors |
| 364 |
for jj = 1:length(rgrid.dwt.src_address) |
| 365 |
lld(rgrid.dwt.dst_address(jj)) = ... |
| 366 |
lld(rgrid.dwt.dst_address(jj)) ... |
| 367 |
+ ( dcp(rgrid.dwt.src_address(jj)) ... |
| 368 |
* rgrid.dwt.remap_matrix(jj,1) ); |
| 369 |
end |
| 370 |
ave(ii).r = reshape(lld',og.nlat,og.nlon); |
| 371 |
|
| 372 |
elseif ( flags.regrid_type_for_vec == 2 ... |
| 373 |
&& vars{ave(ii).ivar}{6} == 'u' ) |
| 374 |
|
| 375 |
% use Alistair's uvcube2latlon() for vectors |
| 376 |
nsiz = size(ave(ii).v); |
| 377 |
by6u = zeros([ nsiz(1)*nsiz(3) nsiz(2) ]); |
| 378 |
by6v = zeros([ nsiz(1)*nsiz(3) nsiz(2) ]); |
| 379 |
for kk = 1:size( ave(ii).v, 3 ) |
| 380 |
is = 1 + (kk-1)*nsiz(1); |
| 381 |
ie = is + nsiz(1) - 1; |
| 382 |
by6u(is:ie,:) = ave(ii ).v(:,:,kk)'; |
| 383 |
by6v(is:ie,:) = ave(ii+1).v(:,:,kk)'; |
| 384 |
end |
| 385 |
% xi=-179:2:180; yi=-89:2:90; |
| 386 |
xi = og.lon; |
| 387 |
ind = find(xi > 179.5); |
| 388 |
xi(ind) = xi(ind) - 360; |
| 389 |
yi = og.lat; |
| 390 |
[ul,vl] = uvacube2latlon(aa_regrid.x,aa_regrid.y, ... |
| 391 |
by6u,by6v, xi,yi); |
| 392 |
ave(ii ).r = ul'; |
| 393 |
ave(ii+1).r = vl'; |
| 394 |
|
| 395 |
if flags.debug > 0 |
| 396 |
figure(1), subplot(1,1,1) |
| 397 |
subplot(2,1,1), surf(ul'), axis equal, view(2), shading flat |
| 398 |
subplot(2,1,2), surf(vl'), axis equal, view(2), shading flat |
| 399 |
end |
| 400 |
|
| 401 |
elseif ( vars{ave(ii).ivar}{6} == 'v' ) |
| 402 |
|
| 403 |
disp(sprintf( ' %s was computed along with %s', ... |
| 404 |
vars{ave(ii).ivar}{2}, vars{ave(ii-1).ivar}{2} )); |
| 405 |
|
| 406 |
elseif ( vars{ave(ii).ivar}{6} == 'u' ) |
| 407 |
|
| 408 |
disp('Error: please specify regrid type for vectors'); |
| 409 |
disp(' using "flags.regrid_type_for_vec"'); |
| 410 |
|
| 411 |
end |
| 412 |
else |
| 413 |
% conservative for scalars |
| 414 |
for jj = 1:length(rgrid.con.src_address) |
| 415 |
lld(rgrid.con.dst_address(jj)) = ... |
| 416 |
lld(rgrid.con.dst_address(jj)) ... |
| 417 |
+ ( dcp(rgrid.con.src_address(jj)) ... |
| 418 |
* rgrid.con.remap_matrix(jj,1) ); |
| 419 |
end |
| 420 |
ave(ii).r = reshape(lld',og.nlat,og.nlon); |
| 421 |
end |
| 422 |
|
| 423 |
if flags.debug > 0 |
| 424 |
figure(2) |
| 425 |
surf(og.lon,og.lat,ll128x64), view(2), shading flat |
| 426 |
end |
| 427 |
|
| 428 |
end |
| 429 |
|
| 430 |
|
| 431 |
%====================================================================== |
| 432 |
% |
| 433 |
% Write netCDF output |
| 434 |
% |
| 435 |
disp('Writing netCDF output for SH') |
| 436 |
|
| 437 |
nc = netcdf(oname{1}, 'clobber'); |
| 438 |
nc.title = [ 'Aqua Planet: ' ... |
| 439 |
'Single-Level 2-D Means from "Example" Experiment' ]; |
| 440 |
nc.institution = 'MIT Dept. of EAPS, Cambridge, MA, USA'; |
| 441 |
nc.source = [ 'MITgcm: ' ]; |
| 442 |
nc.Conventions = 'CF-1.0'; |
| 443 |
nc.history = [ 'Original data produced: ' '2002/08/20' ]; |
| 444 |
|
| 445 |
nc('lon') = og.nlon; |
| 446 |
nc('lat') = og.nlat; |
| 447 |
nc('bnd') = 2; |
| 448 |
|
| 449 |
nc{'lon'} = ncdouble('lon'); |
| 450 |
nc{'lon'}.standard_name = 'longitude'; |
| 451 |
nc{'lon'}.units = 'degrees_east'; |
| 452 |
nc{'lon'}.bounds = 'lon_bnds'; |
| 453 |
nc{'lon'}(:) = og.lon; |
| 454 |
|
| 455 |
nc{'lat'} = ncdouble('lat'); |
| 456 |
nc{'lat'}.standard_name = 'latitude'; |
| 457 |
nc{'lat'}.units = 'degrees_north'; |
| 458 |
nc{'lat'}.bounds = 'lat_bnds'; |
| 459 |
nc{'lat'}(:) = og.lat; |
| 460 |
|
| 461 |
nc{'lon_bnds'} = ncdouble('lon','bnd'); |
| 462 |
nc{'lon_bnds'}.ape_name = 'longitude cell bounds'; |
| 463 |
nc{'lon_bnds'}.units = 'degrees_east'; |
| 464 |
nc{'lon_bnds'}(:) = og.lonbnd; |
| 465 |
|
| 466 |
nc{'lat_bnds'} = ncdouble('lat','bnd'); |
| 467 |
nc{'lat_bnds'}.ape_name = 'latitude cell bounds'; |
| 468 |
nc{'lat_bnds'}.units = 'degrees_north'; |
| 469 |
nc{'lat_bnds'}(:) = og.latbnd; |
| 470 |
|
| 471 |
for ii = 1:length(ave) |
| 472 |
|
| 473 |
iv = ave(ii).ivar; |
| 474 |
nc{ vars{iv}{2} } = ncfloat( 'lat', 'lon' ); |
| 475 |
nc{ vars{iv}{2} }.ape_name = vars{iv}{4}; |
| 476 |
nc{ vars{iv}{2} }.units = vars{iv}{5}; |
| 477 |
nc{ vars{iv}{2} }.FillValue_ = 1.0e20; |
| 478 |
|
| 479 |
% deal with missing values |
| 480 |
ind = find(isnan( ave(ii).r )); |
| 481 |
ave(ii).r(ind) = 1.0e20; |
| 482 |
|
| 483 |
nc{ vars{iv}{2} }(:) = ave(ii).r; |
| 484 |
|
| 485 |
end |
| 486 |
|
| 487 |
nc = close(nc); |
| 488 |
|
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