Metadata Report for BODC Series Reference Number 770644


Metadata Summary

Data Description

Data Category Currents -subsurface Eulerian
Instrument Type
NameCategories
Teledyne RDI Workhorse Long-Ranger ADCP  current profilers
Instrument Mounting subsurface mooring
Originating Country United Kingdom
Originator Prof Andy Clarke
Originating Organization British Antarctic Survey
Processing Status banked
Project(s) -
 

Data Identifiers

Originator's Identifier ADCP.
BODC Series Reference 770644
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 2005-01-24 15:07
End Time (yyyy-mm-dd hh:mm) 2006-02-15 19:22
Nominal Cycle Interval 900.0 seconds
 

Spatial Co-ordinates

Latitude 67.56706 S ( 67° 34.0' S )
Longitude 68.23371 W ( 68° 14.0' W )
Positional Uncertainty 0.05 to 0.1 n.miles
Minimum Sensor Depth 0.0 m
Maximum Sensor Depth 187.34 m
Minimum Sensor Height 334.66 m
Maximum Sensor Height 522.0 m
Sea Floor Depth 522.0 m
Sensor Distribution Scattered at fixed depths - The sensors are scattered with respect to depth but each remains effectively at the same depth for the duration of the series
Sensor Depth Datum Instantaneous - Depth measured below water line or instantaneous water body surface
Sea Floor Depth Datum Unspecified -
 

Parameters

BODC CODE Rank Units Short Title Title
DISTTRAN 0 Metres Tran_dist Distance (from transducer along measurement axis)
AADYAA01 1 Days Date(Loch_Day) Date (time from 00:00 01/01/1760 to 00:00 UT on day)
AAFDZZ01 1 Days Time(Day_Fract) Time (time between 00:00 UT and timestamp)
ACYCAA01 1 Dimensionless Record_No Sequence number
ADEPZZ01 1 Metres DepBelowSurf Depth below surface of the water body
HEADCM01 1 Degrees Platform_Heading Orientation (horizontal relative to true north) of measurement device {heading}
PTCHFG01 1 Degrees Pitch_(Fluxgate) Orientation (pitch) of measurement platform by triaxial fluxgate compass
ROLLFG01 1 Degrees Roll_(Fluxgate) Orientation (roll angle) of measurement platform by triaxial fluxgate compass
ASAMAPAV 2 Decibels ADCPSA_avg Signal return amplitude from the water body by moored acoustic doppler current profiler (ADCP) and averaging of all functional beams
LCEWAP01 2 Centimetres per second CurrVelE_ADCP Eastward current velocity (Eulerian) in the water body by moored acoustic doppler current profiler (ADCP)
LCNSAP01 2 Centimetres per second CurrVelN_ADCP Northward current velocity (Eulerian) in the water body by moored acoustic doppler current profiler (ADCP)
LERRAP01 2 Centimetres per second ADCPER Current velocity error in the water body by moored acoustic doppler current profiler (ADCP)
PCGDAP01 2 Percent Percent_Good_(ADCP) Acceptable proportion of signal returns by acoustic doppler current profiler (ADCP)
 

Definition of Rank

  • Rank 1 is a one-dimensional parameter
  • Rank 2 is a two-dimensional parameter
  • Rank 0 is a one-dimensional parameter describing the second dimension of a two-dimensional parameter (e.g. bin depths for moored ADCP data)

Problem Reports

No Problem Report Found in the Database

Data Quality Report

During screening it was identified that all the series included short periods relating to the deployment and recovery of the instrument. All instances have been flagged M for all channels.

Series Ref. Number Period Comment
770644

24/01/2005 15:07:30 hours — 25/01/2005 13:52:30 hours

15/02/2006 17:07:30 hours — 15/02/2006 19:22:30 hours

Deployment of mooring

Recovery of mooring

770656

17/02/2006 11:36:06 hours — 17/02/2006 17:57:37 hours

16/02/2006 22:36:06 hours — 17/12/2006 02:21:06 hours

Deployment of mooring

Recovery of mooring

770668

17/12/2006 13:57:37 hours — 17/12/2006 17:57:35 hours

09/04/2007 13:27:37 hours — 13/04/2007 10:57:37 hours

Deployment of mooring

Recovery of mooring


Data Access Policy

Open Data supplied by Natural Environment Research Council (NERC)

You must always use the following attribution statement to acknowledge the source of the information: "Contains data supplied by Natural Environment Research Council."


Narrative Documents

Teledyne RDI's Workhorse Long Ranger ADCP

The Workhorse Long-Ranger acoustic doppler current profiler (Teledyne RD Instruments) is a long-range and long-term self contained ADCP. It has a patented broadband signal (75 kHz) and a standard depth rating of 1500m. It operates effectively between temperatures of -5°C and 45°C and has a velocity accuracy of ±1% ±5mm/s.

The instrument comprises:

BODC Processing

The data arrived at BODC in .mat files representing acoustic doppler current profiler (ADCP) data from a mooring positioned in Marguerite Bay, Antarctica which was deployed in conjuction with the Rothera Oceanographic and Biological Time Series (RaTS). These were reformatted to the internal QXF format using BODC established procedures. The following table shows how the variables within the matlab files were mapped to the appropriate BODC parameter codes:

Originator's Variable Units Description BODC Parameter Code Units Comment
error_vel m s -1 Current velocity error in the water body by moored acoustic doppler current profiler (ADCP) LERRAP01 cm s -1 raw data x100 to convert units
east_vel m s -1 Eastward current velocity (Eulerian) in the water body by moored acoustic doppler current profiler (ADCP) LCEWAP01 cm s -1 raw data x100 to convert units
north_vel m s -1 Northward current velocity (Eulerian) in the water body by moored acoustic doppler current profiler (ADCP) LCNSAP01 cm s -1 raw data x100 to convert units
good % Acceptable proportion of signal returns by acoustic doppler current profiler (ADCP) PCGDAP01 % -
heading degrees Orientation (horizontal relative to true north) of measurement device {heading} HEADCM01 degrees -
pitch degrees Orientation (pitch) of measurement platform by trixial fluxgate compass PTCHFG01 degrees -
roll degrees Orientation (roll) of measurement platform by trixial fluxgate compass ROLLFG01 degrees -
depth metres Depth below surface of the water column ADEPZZ01 metres -
intens decibars Signal return amplitude from the water body by moored acoustic doppler current profiler (ADCP) and averaging of all functional beams ASAMAPAV decibars -
Bins m Distance (from transducer along measurement axis) DISTTRAN m -

The originator's file also included several other parameters that weren't transferred but are available upon request: bt_range, bt_vel, corr, status, vert-vel (m s -1 ), temperature (°C), salinity, pressure, pitch_std (°C), roll_std (°C), pressure_std, heading_std (°C).

The reformatted data were visualised using the in-house EDSERPLO software. Suspect data were marked by adding an appropriate quality control flag, missing data by both setting the data to an appropriate value and setting the quality control flag.

Originator's Processing

vertical structure of the water column data were obtained from two moorings deployed in Marguerite Bay, one on the RaTS site and the other in the subsidiary branch of Marguerite Trough. The Acoustic Doppler Current Profiler (ADCP) data were recorded at 15 minute interval all throughout the deployment period. The instruments were deployed in current profiling mode, and were upward looking. The bin closest to the ADCP was set at 12.65 m deep to prevent contamination of acoustic returns by the outgoing signal whilst the remaining bins are 4 m deep

The originator applied data selection procedures using the instrument's 'percent good' (PG) parameter, which logs the percentage of returns from each outgoing acoustic pulse that passed a variety of criteria. The PG values are affected by factors such as low correlation, large error valocity and fish detection. Any returns with PG < 75% were flagged and the corresponding velocity and acoustic backscatter data were rejected from the final file. The resulting gaps in the time series were re-built using linear interpolation.

ADCP data close to the surface were consistently poor due to the strong surface echo overwhelming the side lobe suppression of the transducer. Examination of these data revealed that the uppermost ~15m (4 bins) of all series were contaminated and therefore were discarded from the final file.


Project Information


No Project Information held for the Series

Data Activity or Cruise Information

Data Activity

Start Date (yyyy-mm-dd) 2005-01-25
End Date (yyyy-mm-dd) 2006-02-15
Organization Undertaking ActivityBritish Antarctic Survey
Country of OrganizationUnited Kingdom
Originator's Data Activity IdentifierRaTS_dep1
Platform Categorysubsurface mooring

RaTS Mooring Deployment 1

The first deployment of the mooring at the RaTS site occurred on 25th January 2005 and was later recovered on 15th February 2006. Prior to deployment, all sensors were programmed to sample for a duration of a year. However, due to a delay in the recovery, all sensors except for the ADCP have a data gap of ~3 weeks. Both deployment and recovery were carried out onboard the RRS James Clark Ross.

The exact position of the mooring is as follows:

Deployment Latitude Longitude
1 67.56706 oS 68.23371 oW

Details of the instrumentation associated with the first deployment of the mooring at the RaTS site:

BODC image
Instrument Depth (m)
Teledyne RDI's Workhorse Long Ranger 75kHz ADCP (5125) 200
RBR XR-420 CTD (10822) 200
Sediment trap (11262-09) ~212
RBR TR-1050 (11410) ~234
RBR XR-420 CTD (10823) 253
RBR TDR-2050 (11768) 268
RBR XR-420 CTD (10824) 283
Sediment trap (11262-01) ~391

Figure of mooring and table of instruments with corresponding depths (Wallace, 2007)

Reference

Wallace, M.I., 2007. Ocean circulation, properties and variability in Marguerite Bay, west Antarctic Peninsula. PhD Thesis. The Open University, Milton Keynes, UK.

Other Series linked to this Data Activity - 775950 776210 777298 776178 776142

Cruise

Cruise Name JR20050124 (JR112, JR113)
Departure Date 2005-01-24
Arrival Date 2005-01-25
Principal Scientist(s)Mark Brandon (Open University Department of Earth and Environmental Sciences)
Ship RRS James Clark Ross

Complete Cruise Metadata Report is available here


Fixed Station Information

Fixed Station Information

Station NameRaTS, Rothera
CategoryOffshore area
Latitude67° 34.40' S
Longitude68° 13.50' W
Water depth below MSL520.0 m

Fixed Station Document

The RaTS site is located in Marguerite Bay, ~4 km from shore and over a water depth of ~520 m. Marguerite Bay is enclosed by Adelaide Island to the north, Alexander Island to the south and the Antarctic Peninsula to the east (Figure 1 and 2). Waters are strongly influenced by the Antarctic Circumpolar Current. Surface waters during summer become warm through insolation and freshened by ice melt. In winter surface waters are generally colder and more saline and characterised by a thick mixed layer which persists into the summer months and is marked by a subsurface temperature minimum (for fuller details please see Meredith et al., 2004 and references therein). When optimal conditions aren't available a secondary site is occupied. In times when fast ice prevented sampling at both the primary and secondary site, a third site is utilised close to the Rothera Research Station. However, only a water sample is collected during this time as the water is too shallow to allow for a cast to be conducted. The following provides details of the sites sampled:

Sample Site Latitude Longitude Comments
CTD1 67.57330°S 68.22500°W -
CTD2 67.58512°S 68.16483°W -
WS3 67.56833°S 68.11869°W Approx. position; sampling just off Biscoe Wharf

BODC image

BODC image

Figures Location of Maguerite Bay, to the west of the Antarctic Peninsula (Meredith et al., 2004) and more specifically the location of the RaTS station (Wallace, 2007)

To compliment the CTD data collected at the RaTS site, three fixed moorings were deployed between 2005 - 2007. The moorings consisted of a suite of sensors including ADCPs, CTDs and sediment traps.

Reference

Meredith, M.P., I.A. Renfew, A. Clark, J.C. King, M.A. Brandon (2004) Impact of the 1997/98 ENSO on upper ocean characteristics in Marguerite Bay, western Antarctic Peninsula. Journal of Geophysical Research Letters, Vol. 109, C09013, doi:10.1029/2003JC001784

Wallace, M.I., 2007. Ocean circulation, properties and variability in Marguerite Bay, west Antarctic Peninsula. PhD Thesis. The Open University, Milton Keynes, UK.

Other Series linked to this Fixed Station for this cruise - 775950 776142 776178 776210 779127 784166 784178 784191 787023 787035 787047 788296 788303 788315

Other Cruises linked to this Fixed Station (with the number of series) - JR20001121 (JR55) (1) JR20060216 (JR136, JR137) (2) JR20061206 (JR155, JR163, JR164) (2) RATS/CTD100 (1) RATS/CTD1001 (1) RATS/CTD1003 (1) RATS/CTD1005 (1) RATS/CTD1007 (1) RATS/CTD1009 (1) RATS/CTD1011 (1) RATS/CTD1013 (1) RATS/CTD1015 (1) RATS/CTD1017 (1) RATS/CTD1019 (1) RATS/CTD1021 (1) RATS/CTD1023 (1) RATS/CTD1025 (1) RATS/CTD1027 (1) RATS/CTD1029 (1) RATS/CTD103 (1) RATS/CTD1031 (1) RATS/CTD1033 (1) RATS/CTD1035 (1) RATS/CTD1037 (1) RATS/CTD1039 (1) RATS/CTD1041 (1) RATS/CTD1043 (1) RATS/CTD1045 (1) RATS/CTD1047 (1) RATS/CTD1051 (1) RATS/CTD1053 (1) RATS/CTD1055 (1) RATS/CTD1057 (1) RATS/CTD1059 (1) RATS/CTD106 (1) RATS/CTD1061 (1) RATS/CTD1063 (1) RATS/CTD1065 (1) RATS/CTD1067 (1) RATS/CTD1069 (1) RATS/CTD1071 (1) RATS/CTD1073 (1) RATS/CTD1075 (1) RATS/CTD1077 (1) RATS/CTD1079 (1) RATS/CTD108 (1) RATS/CTD1081 (1) RATS/CTD1083 (1) RATS/CTD1085 (1) RATS/CTD1087 (1) RATS/CTD1089 (1) RATS/CTD1091 (1) RATS/CTD1093 (1) RATS/CTD1095 (1) RATS/CTD1096 (1) RATS/CTD1098 (1) RATS/CTD1100 (1) RATS/CTD1102 (1) RATS/CTD1104 (1) RATS/CTD1106 (1) RATS/CTD1108 (1) RATS/CTD111 (1) RATS/CTD1110 (1) RATS/CTD1112 (1) RATS/CTD1114 (1) RATS/CTD1116 (1) RATS/CTD1117 (1) RATS/CTD1119 (1) RATS/CTD1121 (1) RATS/CTD1123 (1) RATS/CTD1125 (1) RATS/CTD1127 (1) RATS/CTD1129 (1) RATS/CTD113 (1) RATS/CTD1133 (1) RATS/CTD1135 (1) RATS/CTD1137 (1) RATS/CTD1139 (1) RATS/CTD1141 (1) RATS/CTD1143 (1) RATS/CTD1145 (1) RATS/CTD1147 (1) RATS/CTD1149 (1) RATS/CTD115 (1) RATS/CTD1151 (1) RATS/CTD1153 (1) RATS/CTD1155 (1) RATS/CTD1157 (1) RATS/CTD1159 (1) RATS/CTD1161 (1) RATS/CTD1163 (1) RATS/CTD1165 (1) RATS/CTD1167 (1) RATS/CTD1169 (1) RATS/CTD1171 (1) RATS/CTD1173 (1) RATS/CTD1175 (1) RATS/CTD1177 (1) RATS/CTD1179 (1) RATS/CTD1181 (1) RATS/CTD1183 (1) RATS/CTD1185 (1) RATS/CTD1187 (1) RATS/CTD1189 (1) RATS/CTD1191 (1) RATS/CTD1193 (1) RATS/CTD1195 (1) RATS/CTD1196 (1) RATS/CTD1197 (1) RATS/CTD1199 (1) RATS/CTD120 (1) RATS/CTD1201 (1) RATS/CTD1203 (1) RATS/CTD1205 (1) RATS/CTD1207 (1) RATS/CTD1209 (1) RATS/CTD1211 (1) RATS/CTD1213 (1) RATS/CTD1215 (1) RATS/CTD1217 (1) RATS/CTD1219 (1) RATS/CTD122 (1) RATS/CTD1221 (1) RATS/CTD1223 (1) RATS/CTD1225 (1) RATS/CTD1227 (1) RATS/CTD1229 (1) RATS/CTD1231 (1) RATS/CTD1233 (1) RATS/CTD1235 (1) RATS/CTD1237 (1) RATS/CTD1239 (1) RATS/CTD124 (1) RATS/CTD1241 (1) RATS/CTD1243 (1) RATS/CTD1245 (1) RATS/CTD1247 (1) RATS/CTD1249 (1) RATS/CTD1251 (1) RATS/CTD1253 (1) RATS/CTD1255 (1) RATS/CTD1257 (1) RATS/CTD1259 (1) RATS/CTD126 (1) RATS/CTD1261 (1) RATS/CTD1263 (1) RATS/CTD1265 (1) RATS/CTD1267 (1) RATS/CTD1269 (1) RATS/CTD1271 (1) RATS/CTD1273 (1) RATS/CTD1275 (1) RATS/CTD1277 (1) RATS/CTD1279 (1) RATS/CTD1281 (1) RATS/CTD1283 (1) RATS/CTD1285 (1) RATS/CTD1287 (1) RATS/CTD1289 (1) RATS/CTD129 (1) RATS/CTD1291 (1) RATS/CTD1293 (1) RATS/CTD1295 (1) RATS/CTD1297 (1) RATS/CTD1301 (1) RATS/CTD1303 (1) RATS/CTD1305 (1) RATS/CTD1307 (1) RATS/CTD1309 (1) RATS/CTD131 (1) RATS/CTD1311 (1) RATS/CTD1313 (1) RATS/CTD1315 (1) RATS/CTD1317 (1) RATS/CTD1319 (1) RATS/CTD1321 (1) RATS/CTD1323 (1) RATS/CTD1327 (1) RATS/CTD1329 (1) RATS/CTD133 (1) RATS/CTD1331 (1) RATS/CTD1333 (1) RATS/CTD1335 (1) RATS/CTD136 (1) RATS/CTD138 (1) RATS/CTD140 (1) RATS/CTD142 (1) RATS/CTD145 (1) RATS/CTD147 (1) RATS/CTD150 (1) RATS/CTD151 (1) RATS/CTD153 (1) RATS/CTD154 (1) RATS/CTD156 (1) RATS/CTD157 (1) RATS/CTD160 (1) RATS/CTD163 (1) RATS/CTD164 (1) RATS/CTD166 (1) RATS/CTD167 (1) RATS/CTD169 (1) RATS/CTD170 (1) RATS/CTD173 (1) RATS/CTD175 (1) RATS/CTD177 (1) RATS/CTD180 (1) RATS/CTD182 (1) RATS/CTD184 (1) RATS/CTD186 (1) RATS/CTD189 (1) RATS/CTD191 (1) RATS/CTD193 (1) RATS/CTD195 (1) RATS/CTD198 (1) RATS/CTD200 (1) RATS/CTD202 (1) RATS/CTD204 (1) RATS/CTD206 (1) RATS/CTD208 (1) RATS/CTD210 (1) RATS/CTD214 (1) RATS/CTD217 (1) RATS/CTD219 (1) RATS/CTD221 (1) RATS/CTD223 (1) RATS/CTD225 (1) RATS/CTD227 (1) RATS/CTD230 (1) RATS/CTD232 (1) RATS/CTD234 (1) RATS/CTD237 (1) RATS/CTD239 (1) RATS/CTD241 (1) RATS/CTD243 (1) RATS/CTD245 (1) RATS/CTD247 (1) RATS/CTD249 (1) RATS/CTD251 (1) RATS/CTD254 (1) RATS/CTD256 (1) RATS/CTD258 (1) RATS/CTD260 (1) RATS/CTD262 (1) RATS/CTD265 (1) RATS/CTD267 (1) RATS/CTD269 (1) RATS/CTD271 (1) RATS/CTD273 (1) RATS/CTD275 (1) RATS/CTD277 (1) RATS/CTD281 (1) RATS/CTD283 (1) RATS/CTD285 (1) RATS/CTD287 (1) RATS/CTD289 (1) RATS/CTD291 (1) RATS/CTD293 (1) RATS/CTD295 (1) RATS/CTD297 (1) RATS/CTD301 (1) RATS/CTD305 (1) RATS/CTD307 (1) RATS/CTD309 (1) RATS/CTD311 (1) RATS/CTD313 (1) RATS/CTD315 (1) RATS/CTD317 (1) RATS/CTD319 (1) RATS/CTD321 (1) RATS/CTD323 (1) RATS/CTD325 (1) RATS/CTD327 (1) RATS/CTD329 (1) RATS/CTD331 (1) RATS/CTD335 (1) RATS/CTD337 (1) RATS/CTD341 (1) RATS/CTD343 (1) RATS/CTD345 (1) RATS/CTD347 (1) RATS/CTD351 (1) RATS/CTD353 (1) RATS/CTD355 (1) RATS/CTD357 (1) RATS/CTD361 (1) RATS/CTD363 (1) RATS/CTD365 (1) RATS/CTD373 (1) RATS/CTD375 (1) RATS/CTD377 (1) RATS/CTD379 (1) RATS/CTD381 (1) RATS/CTD383 (1) RATS/CTD385 (1) RATS/CTD387 (1) RATS/CTD389 (1) RATS/CTD395 (1) RATS/CTD397 (1) RATS/CTD399 (1) RATS/CTD401 (1) RATS/CTD403 (1) RATS/CTD405 (1) RATS/CTD407 (1) RATS/CTD409 (1) RATS/CTD411 (1) RATS/CTD415 (1) RATS/CTD417 (1) RATS/CTD419 (1) RATS/CTD423 (1) RATS/CTD425 (1) RATS/CTD427 (1) RATS/CTD429 (1) RATS/CTD43 (1) RATS/CTD431 (1) RATS/CTD433 (1) RATS/CTD437 (1) RATS/CTD439 (1) RATS/CTD443 (1) RATS/CTD445 (1) RATS/CTD461 (1) RATS/CTD463 (1) RATS/CTD465 (1) RATS/CTD467 (1) RATS/CTD469 (1) RATS/CTD471 (1) RATS/CTD473 (1) RATS/CTD475 (1) RATS/CTD477 (1) RATS/CTD479 (1) RATS/CTD481 (1) RATS/CTD483 (1) RATS/CTD485 (1) RATS/CTD487 (1) RATS/CTD489 (1) RATS/CTD49 (1) RATS/CTD491 (1) RATS/CTD493 (1) RATS/CTD495 (1) RATS/CTD497 (1) RATS/CTD499 (1) RATS/CTD501 (1) RATS/CTD503 (1) RATS/CTD505 (1) RATS/CTD507 (1) RATS/CTD509 (1) RATS/CTD51 (1) RATS/CTD511 (1) RATS/CTD513 (1) RATS/CTD515 (1) RATS/CTD517 (1) RATS/CTD519 (1) RATS/CTD521 (1) RATS/CTD523 (1) RATS/CTD525 (1) RATS/CTD527 (1) RATS/CTD529 (1) RATS/CTD53 (1) RATS/CTD531 (1) RATS/CTD534 (1) RATS/CTD536 (1) RATS/CTD538 (1) RATS/CTD540 (1) RATS/CTD542 (1) RATS/CTD545 (1) RATS/CTD547 (1) RATS/CTD549 (1) RATS/CTD55 (1) RATS/CTD551 (1) RATS/CTD553 (1) RATS/CTD555 (1) RATS/CTD557 (1) RATS/CTD559 (1) RATS/CTD561 (1) RATS/CTD563 (1) RATS/CTD565 (1) RATS/CTD567 (1) RATS/CTD569 (1) RATS/CTD571 (1) RATS/CTD573 (1) RATS/CTD575 (1) RATS/CTD577 (1) RATS/CTD579 (1) RATS/CTD58 (1) RATS/CTD581 (1) RATS/CTD583 (1) RATS/CTD585 (1) RATS/CTD587 (1) RATS/CTD589 (1) RATS/CTD591 (1) RATS/CTD593 (1) RATS/CTD595 (1) RATS/CTD597 (1) RATS/CTD599 (1) RATS/CTD60 (1) RATS/CTD601 (1) RATS/CTD603 (1) RATS/CTD605 (1) RATS/CTD607 (1) RATS/CTD609 (1) RATS/CTD611 (1) RATS/CTD613 (1) RATS/CTD615 (1) RATS/CTD617 (1) RATS/CTD619 (1) RATS/CTD62 (1) RATS/CTD621 (1) RATS/CTD623 (1) RATS/CTD625 (1) RATS/CTD627 (1) RATS/CTD629 (1) RATS/CTD631 (1) RATS/CTD633 (1) RATS/CTD635 (1) RATS/CTD637 (1) RATS/CTD639 (1) RATS/CTD64 (1) RATS/CTD654 (1) RATS/CTD66 (1) RATS/CTD669 (1) RATS/CTD678 (1) RATS/CTD68 (1) RATS/CTD687 (1) RATS/CTD695 (1) RATS/CTD70 (1) RATS/CTD705 (1) RATS/CTD72 (1) RATS/CTD722 (1) RATS/CTD724 (1) RATS/CTD727 (1) RATS/CTD729 (1) RATS/CTD731 (1) RATS/CTD733 (1) RATS/CTD735 (1) RATS/CTD737 (1) RATS/CTD739 (1) RATS/CTD74 (1) RATS/CTD741 (1) RATS/CTD743 (1) RATS/CTD745 (1) RATS/CTD747 (1) RATS/CTD749 (1) RATS/CTD751 (1) RATS/CTD753 (1) RATS/CTD755 (1) RATS/CTD757 (1) RATS/CTD759 (1) RATS/CTD761 (1) RATS/CTD763 (1) RATS/CTD765 (1) RATS/CTD767 (1) RATS/CTD77 (1) RATS/CTD771 (1) RATS/CTD773 (1) RATS/CTD775 (1) RATS/CTD777 (1) RATS/CTD779 (1) RATS/CTD781 (1) RATS/CTD783 (1) RATS/CTD785 (1) RATS/CTD787 (1) RATS/CTD789 (1) RATS/CTD795 (1) RATS/CTD797 (1) RATS/CTD799 (1) RATS/CTD80 (1) RATS/CTD801 (1) RATS/CTD803 (1) RATS/CTD805 (1) RATS/CTD807 (1) RATS/CTD809 (1) RATS/CTD811 (1) RATS/CTD813 (1) RATS/CTD817 (1) RATS/CTD819 (1) RATS/CTD82 (1) RATS/CTD821 (1) RATS/CTD823 (1) RATS/CTD825 (1) RATS/CTD827 (1) RATS/CTD829 (1) RATS/CTD831 (1) RATS/CTD833 (1) RATS/CTD837 (1) RATS/CTD839 (1) RATS/CTD84 (1) RATS/CTD841 (1) RATS/CTD843 (1) RATS/CTD845 (1) RATS/CTD847 (1) RATS/CTD849 (1) RATS/CTD851 (1) RATS/CTD853 (1) RATS/CTD855 (1) RATS/CTD857 (1) RATS/CTD859 (1) RATS/CTD861 (1) RATS/CTD863 (1) RATS/CTD865 (1) RATS/CTD867 (1) RATS/CTD869 (1) RATS/CTD87 (1) RATS/CTD871 (1) RATS/CTD873 (1) RATS/CTD879 (1) RATS/CTD881 (1) RATS/CTD883 (1) RATS/CTD885 (1) RATS/CTD887 (1) RATS/CTD889 (1) RATS/CTD89 (1) RATS/CTD891 (1) RATS/CTD893 (1) RATS/CTD895 (1) RATS/CTD897 (1) RATS/CTD899 (1) RATS/CTD901 (1) RATS/CTD903 (1) RATS/CTD905 (1) RATS/CTD907 (1) RATS/CTD909 (1) RATS/CTD91 (1) RATS/CTD913 (1) RATS/CTD915 (1) RATS/CTD917 (1) RATS/CTD919 (1) RATS/CTD921 (1) RATS/CTD923 (1) RATS/CTD925 (1) RATS/CTD927 (1) RATS/CTD929 (1) RATS/CTD93 (1) RATS/CTD931 (1) RATS/CTD933 (1) RATS/CTD935 (1) RATS/CTD937 (1) RATS/CTD939 (1) RATS/CTD941 (1) RATS/CTD943 (1) RATS/CTD945 (1) RATS/CTD947 (1) RATS/CTD949 (1) RATS/CTD951 (1) RATS/CTD953 (1) RATS/CTD955 (1) RATS/CTD957 (1) RATS/CTD959 (1) RATS/CTD96 (1) RATS/CTD961 (1) RATS/CTD963 (1) RATS/CTD965 (1) RATS/CTD967 (1) RATS/CTD969 (1) RATS/CTD971 (1) RATS/CTD973 (1) RATS/CTD975 (1) RATS/CTD977 (1) RATS/CTD979 (1) RATS/CTD98 (1) RATS/CTD981 (1) RATS/CTD983 (1) RATS/CTD985 (1) RATS/CTD987 (1) RATS/CTD989 (1) RATS/CTD991 (1) RATS/CTD993 (1) RATS/CTD995 (1) RATS/CTD997 (1) RATS/CTD999 (1)


BODC Quality Control Flags

The following single character qualifying flags may be associated with one or more individual parameters with a data cycle:

Flag Description
Blank Unqualified
< Below detection limit
> In excess of quoted value
A Taxonomic flag for affinis (aff.)
B Beginning of CTD Down/Up Cast
C Taxonomic flag for confer (cf.)
D Thermometric depth
E End of CTD Down/Up Cast
G Non-taxonomic biological characteristic uncertainty
H Extrapolated value
I Taxonomic flag for single species (sp.)
K Improbable value - unknown quality control source
L Improbable value - originator's quality control
M Improbable value - BODC quality control
N Null value
O Improbable value - user quality control
P Trace/calm
Q Indeterminate
R Replacement value
S Estimated value
T Interpolated value
U Uncalibrated
W Control value
X Excessive difference

SeaDataNet Quality Control Flags

The following single character qualifying flags may be associated with one or more individual parameters with a data cycle:

Flag Description
0 no quality control
1 good value
2 probably good value
3 probably bad value
4 bad value
5 changed value
6 value below detection
7 value in excess
8 interpolated value
9 missing value
A value phenomenon uncertain