***************************************************************** Journal for accession number: 0209169 Created on: 2020-03-04 11:06:05 UTC By: Tim P. Boyer, NCEI Source: International Argo Program temperature/salinity profiling float data. Temperature, salinity and dissolved oxygen profile data from globally distributed Argo profiling floats through the month of February 2020 for the Global Argo Data Repository (GADR), containing data from 1995-09-07 to 2020-02-29 were obtained from the Argo GTS server (available at the following URL: http://www.nodc.noaa.gov/argo/latest_data.html) by an automated process for the Global Argo Data Repository. The original data files have been stored in a tar archive file and compressed using gzip which was copied to data/0-data/. A copy of the files ar_index_global_prof.txt, ar_index_global_meta.txt, ar_index_global_tech.txt,and ar_index_global_traj.txt were extracted from the compressed tar archive. Metadata from these files were used in the automated processing of this accession and creation of the ancillary information in about/. The copies of these files were then deleted. The NOAA National Centers for Environmental Information (NCEI) operate the GADR as the long-term archive for the International Argo Program. For additional information about Argo, see http://www.argo.ucsd.edu/. Argo data archived by NCEI may include real-time and/or delayed-mode profiles of ocean temperature, salinity and dissolved oxygen collected by Argo profiling floats, as well as related conductivity and/or pressure measurements, collected by Argo profiling floats and other profiling float data not directly handled by the Argo data assembly centers. Profiling floats have been deployed as early as 1995 as part of several research projects. The US NODC began archiving Argo data on a monthly basis starting the second quarter of FY 2003. Information about the latest Argo data is available at http://www.nodc.noaa.gov/argo/latest_data.html. Files: about/ This directory contains files with ancillary information generated by NCEI about this data set. 0209169_lonlat.txt - Station locations for these data. Each row contains the geographical position of an XBT profile (longitude in the left column and latitude in the right column, both in degrees). 0209169_map.jpg - Station location map for the data updated within the last month. Argo_202002_file_list.txt - A list of the files included in the accession. data/0-data/ This directory contains the actual Argo data. Because of the large numbers of files which make up this data set, the original data files have been stored in a tar archive file and compressed using the gzip utility. The file naming convention used for the original data files is as follows: Directory files: Each directory file describes all individual files, either profile ("prof"), trajectory ("traj"), metadata ("meta") or technical ("tech"), of the GDAC ftp site. Its format is an autodescriptive Ascii with comma separated values. The directory file contains: * A header with a list of general informations: title, description, project name, format version, date of update, ftp root addresses, GDAC node. * A table with a description of each file of the GDAC ftp site. This table is a comma separated list. ar_index_global_prof.txt - The profile directory file. ar_index_global_meta.txt - The metadata directory file. ar_index_global_tech.txt - The technical directory file. ar_index_global_traj.txt - The trajectory directory file. Profile data: _.nc - For floats that collect no more than 1 ascending and 1 descending profile per cycle, where the initial R indicates Real-Time data the initial D indicates Delayed-Mode data XXX is the cycle number the second D indicates a descending profile (profiles without this D are collected during ascent). _<_YY>.nc - For floats that collect 2 or more ascending or descending profiles per cycle, where the initial R indicates Real-Time data the initial D indicates Delayed-Mode data XXX is the cycle number the second D indicates a descending profile (profiles without this D are collected during ascent). YY counts multiple ascending/descending profiles separately. Since floats can alternate between the two modes, they may have file names following both conventions. Examples: a) R1900045_003.nc, R1900045_003D.nc b) R1900046_007_01.nc, R1900067_007_02.nc, R1900067_007_03.nc c) R1900046_007D_01.nc, R1900067_007D_02.nc, R1900067_007D_03.nc d) R1900045_003.nc, R1900045_004_01.nc, R1900045_004_02.nc, R1900045_004_03.nc, R1900045_004_04.nc, R1900045_005.nc Trajectory data: _traj.nc - An Argo trajectory file contains all received locations of an Argo float. There is one trajectory file per float. In addition to locations, a trajectory file may contain measurements such as temperature, salinity or conductivity performed at some or all locations. Example: 1900045_traj.nc Metadata: _meta.nc - An Argo meta-data file contains information about an Argo float. Example: 1900045_meta.nc Technical Data: _tech.nc - An Argo technical file contains technical information from an Argo float. This information is registered for each cycle performed by the float. The number and the type of technical information is different from one float model to an other. To be flexible, for each cycle, the name of the parameters and their values are recorded. The name of the parameters recorded may therefore change from one model of float to another. Example: 1900045_tech.nc Additional information about the Argo netCDF file format is available at http://www.nodc.noaa.gov/argo/document/datafmt/.