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Introduction to ARGO
Data File Format
I. Data File Demo
ARGO QC SYSTEM VERSION : 1.3 1
--------------------- PROFILE HEADER ---------------------- 2
PLATFORM NUMBER = 21861 3
CYCLE NUMBER = 98 4
DIRECTION = A (ASCENDING) 5
JULIAN DAY = 19358.343055555557 (UTC) 6
REFERENCE DATE TIME = 1950-01-01 00:00:00 7
OBSERVATION DATE TIME = 2003-01-01 08:14:00 8
LATITUDE = 48.4700 (DEGREE) 9
LONGITUDE = 173.7700 (DEGREE) 10
PROFILE QC = 111 (JULD QC, POSITION QC,NMDIS QC) 11
PROFILE PRESSURE QC = 01 (ORIGINAL QC, NMDIS QC) 12
PROFILE TEMPERATURE QC = 11 (ORIGINAL QC, NMDIS QC) 13
PROFILE SALINITY QC = 11 (ORIGINAL QC, NMDIS QC) 14
PARAMETERS = PRES TEMP PSAL 15
LEVELS = 48 16
DATA MODE = R 17
DATA CENTRE = JA 18
INSTRUMENT TYPE = R1-TD139 19
------------------- PROFILE DATA ITEMS -------------------- 20
PRES : PRESSURE (DECIBAR) 21
TEMP : TEMPERATURE (DEGREE CELSIUS) 22
PSAL : PRACTICAL SALINITY (PSU) 23
DEN.A : DENSITY ANOMALY (KG/M^3) 24
S.VEL : SOUND VELOCITY (M/S) 25
PQ : PRESSURE QC (ORIGINAL QC,NMDIS QC) 26
TQ : TEMPERATURE QC (ORIGINAL QC,NMDIS QC) 27
SQ : SALINITY QC (ORIGINAL QC,NMDIS QC) 28
--------------------- PROFILE DATA ------------------------ 29
PRES PQ TEMP TQ PSAL SQ DEN.A S.VEL 30
8.0 01 3.670 11 33.080 11 26.33 1462.89 31
10.0 01 3.670 11 33.080 11 26.34 1462.92
19.0 01 3.670 11 33.080 11 26.38 1463.07
30.0 01 3.670 11 33.080 11 26.43 1463.25
II.
Description of Data Content
1.
The first line is the QC version.
2.
The 2nd line to the 17th line contain profile basic information,
that is, platform, observation time, observation position,
overall quality of profile, number of observation levels, etc..
Left of “=” is the name of data item and right is the value.
Detail date items and their descriptions see the following
table:
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Line
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Item
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Format
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3
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Platform No.
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WMO No.
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4
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Cycle No.
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Cycle number in the original file is possibly same
as the sequence number,
maybe different from the sequence number, or it
is also possible to be “0”.
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5
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Direction
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Profile data are observed in the ascending or
descending process of platform. “A” means in
ascending process. “D” means in descending process.
“U” means no information on it.
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6
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Juld
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Actual observation date of
profile, i.e. Julian Day.
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7
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Reference date time
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Reference date time of Juld time
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8
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Observation date time
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Observation time of profile (yyyy-mm-dd
HH:MM:SS)，conversed
from Juld time and reference time.
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9
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Latitude
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Latitude of profile, from –90 to 90
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10
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Longitude
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Longitude of profile, from –180 to 180
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11
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Profile QC
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Three characters, respectively describe the
original time QC, the observation position QC and the
profile QC of the CADC. Their meanings see the QC
descriptions.
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12
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Pressure QC
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Two characters, respectively describe the original
unit pressure QC and the pressure QC of the CADC. Their
meanings see the QC descriptions.
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13
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Temperature QC
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Two characters, respectively describe the original
temperature QC and the temperature QC of the CADC. Their
meanings see the QC description.
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14
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Salinity QC
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Two characters, respectively describe the original
salinity QC and the salinity QC of the CADC. Their
meanings see the QC description.
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15
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Parameters
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Parameters measured in the profile. PRES, TEMP and
PSAL are pressure, temperature and salinity
respectively. They are separated by blank.
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16
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Levels
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Number of observation levels of
the profile
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17
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Data mode
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R: quasi-real
time mode D: Delayed mode
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18
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Center
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Data center
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19
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Instrument type
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Instrument type
of Argo float
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3、The
18th line to the 26th line contain the
data values.
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Chinese Name
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Identifier
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Beginning column
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Number of column列数
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Description
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Pressure
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PRES
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21
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7
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Pressure data
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Pressure QC
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PQ
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26
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2
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Original pressure QC or the pressure QC of the CADC
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Temperature
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TEMP
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22
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7
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Temperature data
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Temperature QC
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TQ
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27
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2
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Original temperature QC or the
temperature QC of the CADC
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Salinity
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PSAL
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23
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7
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Salinity data
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Salinity QC
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SQ
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28
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2
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Original salinity QC or the
salinity QC of the CADC
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Density Anomaly
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DEN.A
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24
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5
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Calculated by the CADC, unit: kg/m3
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Sound Velocity
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S.VEL
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25
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7
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Calculated by the CADC, unit: m/s
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