GCOOS Web Accessible Folder

To facilitate data access, GCOOS maintains a Web Accessble Folder (WAF) for all of its holdings. The WAF (https://data.gcoos.org/data/waf) is structured as shown in the left.


GCOOS provide data in various forms. The data aggregated by observable parameters are offered in Comma Separated Values (CSV). Aggregations by platform or stations are offered in CSV or netCDF format. These netCDF files may also be accessed through GCOOS ERDDAP servers.

Data folders may contains a SHA384 hash file (SHA384SUM) that can be used for any collision-resistant application. SHA384SUM can be used to validate downloaded files, check if a file was modified, or use it as a folder manifest to check if there are new files added to the folder. The nc_by_platform folders will contain a SHA384SUM_Archive manifest to guide archival centers to what data can be archived to national archival repositories.



The data folders are summarized by observation, and segregated by year. All files in these folders follows the same file naming syntax as above:


File are suffixed with '.csv' to indicate the data format, i.e. Comma Separate Values. The files in these folders have a corresponding ISO 19115-2, a recommended presentation of ISO 19139 standard. The metadata files uses the same file naming syntax as above but suffixed with '.xml' to indicate XML data format.



The data folder contain files, summarized by platform or stations. Data from regional assets are summarized and seggregated by year. The following are the variables classified as 'atmospheric':

1. air_pressure (mbar)
2. air_temperature (Celsius)
3. dew_point_temperature (Celsius)
4. relative_humidity (%)
5. wind_speed (m s-1)
6. wind_speed_of_gust (m s-1)
7. wind_to_direction (degrees_true)

The oceanographic variables, arranged according the date, time and depth from where the observation was observed:

1. sea_water_speed (cm s-1)
2. direction_of_sea_water_velocity (degrees_true)
3. upward_sea_water_velocity (cm s-1)
4. mass_concentration_of_chlorophyll_in_sea_water (ug L-1)
5. mole_concentration_of_dissolved_molecular_oxygen_in_sea_water (ug L-1)
6. sea_surface_height_above_sea_level (m)
7. sea_water_practical_salinity (PSU),
8. sea_water_temperature (Celsius)
11. sea_water_turbidity (NTU)

All files in these folders follows the following syntax:

'gcoos_'+urn+"_"+year+"_"+month+"_"+variable+"_"+sensor number+".csv"

As with previous aggregation type, files suffixed with '.csv' indicate a Comma Separate Values (CSV) data formatted file.


This folder contains the netCDF4 (classic) equivalent of the files in 'csv_by_platform' folder. However, it has additional subfolder to separate atmospheric (folder atm) and oceanographic data (folder ocn). The netCDF4 files are in compliance to IOOS Metadata Profile 1.2 standard.