Add raw version

% calculate monthly mean surface geostrophic velocity off Brazil from 2000-2017

clear all

close all

% define path to data

base_path = '/data/c2/TMdata/git_geomar_de_data/SLTAC_GLO_PHY_L4_REP/';

SLTAC_version = 'v1.x.x';

path_to_data = [base_path, SLTAC_version, '/data/'];

% find indices of the region

lat_lim = [-12 -4];

lon_lim = [-40 -30] + 360;

lat_nc = -89.875 : 0.25 : 89.875;

lon_nc = 0.125 : 0.25 : 359.875;

idx = find(lon_nc > lon_lim(1) & lon_nc < lon_lim(2));

idy = find(lat_nc > lat_lim(1) & lat_nc < lat_lim(2));

% choose time period

year_folder = [2000 : 2017];

% allocate fields

u_geo_m = NaN(length(idx), length(idy), length(year_folder) * 12);

v_geo_m = u_geo_m;

time_m = NaN(length(year_folder) * 12, 1);

% init progressbar

h = waitbar(0, 'Loading and averaging ...');

% load all files of one month and average

for iy = 1 : length(year_folder)

filename_year = [path_to_data, num2str(year_folder(iy))];

KK = dir(filename_year);

KK = KK(3 : end);

for id = 1 : length(KK)

mm(id) = str2num(KK(id).name(29 : 30));

end

for im = 1:12

kk = find(mm == im);

u_geo = NaN(length(idx),length(idy),length(kk));

v_geo = u_geo;

for ik = 1:length(kk)

time(ik) = double(ncread([filename_year,'/',KK(kk(ik)).name],'time'))+datenum(1950,1,1,0,0,0);

ugos = double(ncread([filename_year,'/',KK(kk(ik)).name],'ugos'));

u_geo(:,:,ik) = ugos(idx,idy);

vgos = double(ncread([filename_year,'/',KK(kk(ik)).name],'vgos'));

v_geo(:,:,ik) = vgos(idx,idy);

end

u_geo_m(:,:,(iy-1)*12+im) = nanmean(u_geo,3);

v_geo_m(:,:,(iy-1)*12+im) = nanmean(v_geo,3);

time_m((iy-1)*12+im) = nanmean(time);

waitbar(((iy-1)*12+im)/(length(year_folder)*12),h)

end

clear mm KK

end

close(h)

% save as matfile

lon = lon_nc(idx)-360;

lat = lat_nc(idy);

time = time_m;

ugeo_mon = u_geo_m;

vgeo_mon = v_geo_m;

save geo_surf_vel lon lat time ugeo_mon vgeo_mon

% figure(1);clf

% m_proj('mercator','long',[-40 -30],'lat',[-12 -4]);hold on

% m_contourf(lon_nc(idx)-360,lat_nc(idy),nanmean(u_geo_m,3)',[-.5:1/63:.5],'edgecolor','none')

% m_gshhs_h('patch',[.5 .5 .5]); hold on

% colorbar