USGODAE Argo Level-2 IEEE Data

Data Source	USGODAE GDAC
Date Updated	Weekly Sunday 04:00 AM
Dates Available	19970809-current week

Processing Steps Adjust Quality Control Flags GDAC QC Flag GDAC Description My QC Flag My Description 0 no QC was performed 0 suspect data 1 QC was performed; good data 1 good data 2 probably good data but value may be inconsistent with statistics 1 good data 3 probably bad data (spike, gradient,...) -1 bad data 4 bad data, impossible value -1 bad data 5 value modified during QC 1 good data 8 interpolated value 1 good data 9 missing value 9 missing QC values are assigned for the overall profile (prf) and each level (lev) for all variables: temperature: tqc_prf, tqc_lev salinity: sqc_prf, sqc_lev pressure: pqc_prf, pqc_lev density: dqc_prf, dqc_lev Accept profiles with the following conditions: tqc_prf = 0, 1 pqc_prf = 0, 1 lat/lon QC = 0, 1 direction = ascending Discard duplicate profiles: accept the most recent version Accept profile levels with the following conditions: tqc_prf = 0, 1, 9 pqc_prf = 0, 1, 9 Discard profile if pressure is NOT monotonic Calculate potential temperature and potential density Step through each profile and flag suspicious data: Large temperature jumps & inversions Large pressure jumps Large salinity jumps with a corresponding density inversion Convert pressure to depth Accept profiles that have at least 3 good levels

Output Data Format Field Type Dimension Description date integer nobs YYYYMMDD lon real nobs longitude lat real nobs latitude npts integer nobs number of profile levels (depths) stn_name char*8 nobs WMO number ibas integer nobs general basin identification number prf_tqc integer nobs temperature profile QC prf_pqc integer nobs depth profile QC prf_sqc integer nobs salinity profile QC prf_dqc integer nobs density profile QC depth real nobs, npts depth (m) temp real nobs, npts temperature (C) salt real nobs, npts salinity (psu) pden real nobs, npts potential density (kg/m3) lev_tqc integer nobs, npts temperature level QC lev_pqc integer nobs, npts depth level QC lev_sqc integer nobs, npts salinity level QC lev_dqc integer nobs, npts potential density level QC