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argo_build.md

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argo_build

Syntax

[argo,matching_files] = argo_build(argo_dir)
[argo,matching_files] = argo_build(argo_dir,region)
[argo,matching_files] = argo_build(argo_dir,region,start_date)
[argo,matching_files] = argo_build(argo_dir,region,start_date,end_date)
[argo,matching_files] = argo_build(argo_dir,region,start_date,end_date,variable_list)

Description

[argo,matching_files] = argo_build(argo_dir,region,start_date,end_date,variable_list) searches pathway argo_dir for profiles meeting the search criteria region, start_date, and end_date. Profiles are loaded into the struct array argo with all variables specified in variable_list. Files containing matching profiles are listed in matching_files.

The only required argument is argo_dir. The default state is to load all profiles in path argo_dir, writing variables TEMP_ADJUSTED and PSAL_ADJUSTED into the uniform struct argo.

argo_dir is a character array search path with wildcards. The search path should be the path to the netcdf files themselves, not their directory.

region is a vector containing the bounds [S N W E] of the search region, with limits [-90 90 -180 180]. Limits may cross the dateline e.g. [35 45 170 -130].

start_date and end_date are date strings in format 'dd-mmm-yyyy HH:MM:SS'.

argo is a uniform struct containing data from the profiles matching the region and date criteria. Some data is included automatically while some must be specificed. The variables PLATFORM_NUMBER, LONGITUDE, LATITUDE, JULD, and PRES_ADJUSTED are included automatically. Additional variables must be specified in variable_list, a cell array where each element is the string name of a variable.

matching_files is a string array where each string is the full path to a file which contained a profile matching the region and date criteria.

Example 1

% Get variable information:

argo_dir = '/Users/lnferris/Documents/GitHub/ocean_data_tools/data/argo/*profiles*.nc';
listing = dir(argo_dir); 
ncdisp([listing(1).folder '/' listing(1).name]) % Peek at netCDF header info to inform choice of variable_list.

% Load Argo data from west of New Zealand:

region = [-60.0 -50.0 150.0 160.0]; %  Search region [-90 90 -180 180]
start_date = '01-Nov-2015 00:00:00';
end_date = '01-Jan-2017 00:00:00';
variable_list = {'TEMP_ADJUSTED','PSAL_ADJUSTED'};
[argo,matching_files] = argo_build(argo_dir,region,start_date,end_date,variable_list);

% Make plots:

general_profiles(argo,'TEMP_ADJUSTED','depth')
general_map(argo,bathymetry_dir,'2Dcontour')

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