Metadata Report for BODC Series Reference Number 1022030


Metadata Summary

Data Description

Data Category Currents -subsurface Eulerian
Instrument Type
NameCategories
Teledyne RDI Ocean Surveyor 75kHz vessel-mounted ADCP  current profilers
Instrument Mounting research vessel
Originating Country United Kingdom
Originator Dr Steven Alderson
Originating Organization National Oceanography Centre, Southampton
Processing Status banked
Project(s) Oceans 2025
Oceans 2025 Theme 1
Oceans 2025 Theme 1 WP1.3
 

Data Identifiers

Originator's Identifier OS75_JC031_ONE
BODC Series Reference 1022030
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 2009-02-06 01:02
End Time (yyyy-mm-dd hh:mm) 2009-02-18 19:52
Nominal Cycle Interval 16.0 metres
 

Spatial Co-ordinates

Southernmost Latitude 64.14044 S ( 64° 8.4' S )
Northernmost Latitude 56.32999 S ( 56° 19.8' S )
Westernmost Longitude 68.66633 W ( 68° 40.0' W )
Easternmost Longitude 63.07456 W ( 63° 4.5' W )
Positional Uncertainty 0.0 to 0.01 n.miles
Minimum Sensor Depth 25.7 m
Maximum Sensor Depth 969.7 m
Minimum Sensor Height -
Maximum Sensor Height -
Sea Floor Depth -
Sensor Distribution Sensor fixed, measurements made at fixed depths - The sensor is at a fixed depth, but measurements are made remotely from the sensor over a range of depths (e.g. ADCP measurements)
Sensor Depth Datum Instantaneous - Depth measured below water line or instantaneous water body surface
Sea Floor Depth Datum -
 

Parameters

BODC CODE Rank Units Short Title Title
BINNUMBR 0 Dimensionless BinNum Bin number
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
ALATPM01 1 Degrees Lat_POSMV Latitude north by Position and Orientation Systems for Marine Vessels
ALONPM01 1 Degrees Lon_POSMV Longitude east by Position and Orientation Systems for Marine Vessels
APEWZZ01 1 Centimetres per second PlatformVelE Eastward velocity (over ground) of measurement platform
APNSZZ01 1 Centimetres per second PlatformVelN Northward velocity (over ground) of measurement platform
APSAZZ01 1 Metres per second Plat_speed Speed (over ground) of measurement platform
DBINAA01 2 Metres BinDep Depth below sea surface (ADCP bin)
LCEWAS01 2 Centimetres per second CurrVelE_ADCP Eastward current velocity (Eulerian) in the water body by shipborne acoustic doppler current profiler (ADCP)
LCNSAS01 2 Centimetres per second CurrVelN_ADCP Northward current velocity (Eulerian) in the water body by shipborne acoustic doppler current profiler (ADCP)
LCSAAS01 2 Centimetres per second CurrSpd_ADCP Current speed (Eulerian) in the water body by shipborne 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 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

Instrument Description

A 75 kHz Teledyne RDI Ocean Surveyor Vessel Mount Acoustic Doppler Current Profiler (ADCP) . The instrument is located on the RRS James Cook port side retractable drop keel. When extended, the transducer depth is approximately 9.7 m below sea level.

RD Instruments- Ocean Surveyor 75kHz Vessel mounted ADCP.

Long-Range Mode
Vertical Resolution Cell Size 3 Max. Range (m) 1 Precision (cm/s) 2
8m 520 - 650 30
16m 560 - 700 17
High-Precision Mode
Vertical Resolution Cell Size 3 Max. Range (m) 1 Precision (cm/s) 2
8m 310 - 430 12
16m 350 - 450 9

1 Ranges at 1 to 5 knots ship speed are typical and vary with situation.
2 Single-ping standard deviation.
3 User's choice of depth cell size is not limited to the typical values specified.

Profile Parameters

Bottom Track

Maximum altitude (precision <2cm/s): 950m

Echo Intensity Profile

Dynamic range: 80dB
Precision: ±1.5dB

Transducer and Hardware

Beam angle: 30°
Configuration: 4-beam phased array
Communications: RS-232 or RS-422 hex-ASCII or binary output at 1200 - 115,200 baud
Output power: 1000W

Standard Sensors

Temperature (mounted on transducer)

Environmental

Operating temperature: -5° to 40°C (-5° to 45°C)*
Storage temperature: -30° to 50°C (-30° to 60°C)*

*later instruments have greater range.

Web Page

Further details can be found on the manufacturer's website or in the specification sheet

Originator's Data Processing

ADCP Configuration

The 75 kHz Teledyne RDI Ocean Surveyor Vessel Mount ADCP was run in low resolution, long-range mode (narrowband) with 60 x 16 m bins (8 m blanking distance). For more information on configuration, see the cruise report , pages 90-91.

Data Processing

Data acquisition was performed in the Teledyne RDI Windows TM -based software, VMDAS (Vessel-mount data acquisition system). Resulting binary ADCP data were processed and edited in University of Hawaii CODAS ADCP processing software. Further examination was performed using the NOCS-generated MEXEC processing suite of programs. Only data corresponding to when the drop keel was down were analysed. For more detailed information on processing, see the cruise report , pages 92-96.

Calibration

Calibration data were calculated using data from when bottom tracking was enabled and the drop keel was extended, and applied to all data where the drop keel was extended. The calibration data are shown below. For more detailed information on calibration see the cruise report , pages 97-100.

Sequence number Start time End time Angular correction (°) Amplitude
2 05/02/2009 14:54:23 06/02/2009 00:56:06 -0.1325 1.0042
3 06/02/2009 00:57:21 06/02/2009 12:48:45 -0.1325 1.0042
4 06/02/2009 12:49:57 08/02/2009 06:47:36 -0.1325 1.0042
5 08/02/2009 06:48:54 11/02/2009 19:38:25 -0.1325 1.0042
6 11/02/2009 19:40:00 13/02/2009 19:43:19 -0.1325 1.0042
7 13/02/2009 19:44:47 16/02/2009 21:49:14 -0.1325 1.0042
8 16/02/2009 21:50:27 18/02/2009 04:40:45 -0.1325 1.0042
9 18/02/2009 04:42:49 18/02/2009 19:54:30 -0.1325 1.0042
11 20/02/2009 02:00:48 20/02/2009 07:25:12 -0.0493 1.0153
12 20/02/2009 07:26:28 23/02/2009 00:57:24 -0.0493 1.0153
13 23/02/2009 00:58:35 23/02/2009 22:56:31 -0.0493 1.0153
14 23/02/2009 22:58:37 25/02/2009 21:40:56 -0.3717 1.0063
15 25/02/2009 21:43:01 26/02/2009 07:20:32 -0.3717 1.0063
16 26/02/2009 07:21:51 27/02/2009 00:48:01 -0.3717 1.0063

Processing at BODC

Data obtained using the 75 kHz Teledyne RDI Ocean Surveyor Vessel Mount Acoustic Doppler Current Profiler (ADCP) were received at BODC in NetCDF MSTAR format files. The data covered the span of the SR1 and SR1b transects through the Drake Passage in the Southern Ocean. The data received were processed in two different ways. Data were either calibrated and averaged into 5 min profiles covering the whole of each transect. This resulted in 2 NetCDF files - one for each transect. Alternatively, data were calibrated, split and averaged over each on/off CTD section. This resulted in 160 NetCDF files (1 file per section, 80 for each transect). After consulting the originators, it was decided that the 5 min profiled sections should be transferred into the BODC database because they provided the highest sampling resolution of each transect. However, on/off CTD section files will still be available in originators format upon requests.

The 5 min profile data were reformatted to the internal NetCDF format using BODC-generated Matlab code. The following table shows how the variables within the files were mapped to appropriate BODC parameter codes:

Originator's variable Units Description BODC Code Units Comments
uabs cm s -1 Absolute eastward water velocity (Eulerian) by ADCP LCEWAS01 cm s -1  
vabs cm s -1 Absolute northward water velocity (Eulerian) by ADCP LCNSAS01 cm s -1  
lon decimal degrees (0-360°) Longitude by Position and Orientation Systems for Marine Vessels (POS MV) GPS ALONPM01 decimal degrees (+ve E) if x <=180° then x + 0
if x > 180° then x - 360
lat decimal degrees (+ve N) Latitude north by Position and Orientation Systems for Marine Vessels (POS MV) GPS ALATPM01 decimal degrees (+ve N)  
uship m s -1 Eastward ship's velocity (derived from lat and lon ) APEWZZ01 cm s -1 cm s -1 = x x 100
vship m s -1 Northward ship's velocity (derived from lat and lon ) APNSZZ01 cm s -1 cm s -1 = x x 100
depth metres ADCP bin depth (bottom of bin) DBINAA01 metres corrected to centre of bin ( x - 8)
speed cm s -1 Absolute water speed (Eulerian) by ADCP (derived from uabs and vabs ) LCSAAS01 cm s -1  
shipspd m s -1 Ship speed over the ground (derived from uship and vship ) APSAZZ01 m s -1  

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.


Project Information

Oceans 2025 - The NERC Marine Centres' Strategic Research Programme 2007-2012

Who funds the programme?

The Natural Environment Research Council (NERC) funds the Oceans 2025 programme, which was originally planned in the context of NERC's 2002-2007 strategy and later realigned to NERC's subsequent strategy (Next Generation Science for Planet Earth; NERC 2007).

Who is involved in the programme?

The Oceans 2025 programme was designed by and is to be implemented through seven leading UK marine centres. The marine centres work together in coordination and are also supported by cooperation and input from government bodies, universities and other partners. The seven marine centres are:

Oceans2025 provides funding to three national marine facilities, which provide services to the wider UK marine community, in addition to the Oceans 2025 community. These facilities are:

The NERC-run Strategic Ocean Funding Initiative (SOFI) provides additional support to the programme by funding additional research projects and studentships that closely complement the Oceans 2025 programme, primarily through universities.

What is the programme about?

Oceans 2025 sets out to address some key challenges that face the UK as a result of a changing marine environment. The research funded through the programme sets out to increase understanding of the size, nature and impacts of these changes, with the aim to:

In order to address these aims there are nine science themes supported by the Oceans 2025 programme:

In the original programme proposal there was a theme on health and human impacts (Theme 7). The elements of this Theme have subsequently been included in Themes 3 and 9.

When is the programme active?

The programme started in April 2007 with funding for 5 years.

Brief summary of the programme fieldwork/data

Programme fieldwork and data collection are to be achieved through:

The data is to be fed into models for validation and future projections. Greater detail can be found in the Theme documents.


Oceans 2025 Theme 1: Climate, Ocean Circulation and Sea Level

Through fieldwork, analysis and modelling, Theme 1 will provide detailed knowledge of how the Atlantic, Arctic and Southern Oceans are responding to, and driving, climate change. In combination with geodetic studies, it will also improve our ability to predict global sea level and UK land movements in the century ahead.

The official Oceans 2025 documentation for this Theme is available from the following link: Oceans 2025 Theme 1

Weblink: http://www.oceans2025.org/


Oceans 2025 Theme 1, Work Package 1.3: Physical-biogeochemical budgets and mixing in the Southern Ocean

This Work Package is run by the National Oceanography Centre, Southampton (NOCS) and aims to establish regional budgets of heat, freshwater and carbon, and to develop more accurate parameterisations for predictive ocean models by quantitatively investigating diapycnal and isopycnal transport processes using observations.

Vast, though poorly quantified, amounts of anthropogenic CO2 (~20 Pg) are believed to have been absorbed into the Antarctic mode and intermediate waters. Much of this uptake is achieved in the Antarctic Circumpolar Current (ACC), involving the upwelling of North Atlantic Deep Water, its northward transport by a delicate balance between Ekman drift and eddies, followed by subduction as mode waters. Models suggest that the rate of CO2 uptake is sensitive to changes in the wind and to changes to the eddy fluxes (Mignone et al., 2005).

To predict climate change, it is essential that the size of this carbon sink be known, and the processes that control it be understood. Even the exchanges of heat and freshwater between the Atlantic and Southern Oceans are poorly known. NOCS will combine observations and modelling to quantify and understand the processes controlling property fluxes and trends in the Atlantic sector of the Southern Ocean, where the Atlantic overturning circulation is partially closed as it meets the ACC. The observational effort will be fully integrated with the international Climate Variability and Predictability (CLIVAR)/Carbon repeat hydrography program, and with the Diapycnal and Isopycnal Mixing Experiment in the Southern Ocean (DIMES) initiative to study mixing rates and processes; this work has been accepted as a contribution to the International Polar Year. The budgets and mixing rates inferred from field measurements will be used to both evaluate and improve numerical models.

More detailed information on this Work Package is available at pages 10 - 11 of the official Oceans 2025 Theme 1 document: Oceans 2025 Theme 1

Weblink: http://www.oceans2025.org/

References

Mignone B., Gnanadesikan A., Sarmiento JL., and Slater RD., 2005. Central role of Southern Hemisphere winds and eddies in modulating the oceanic uptake of anthropogenic carbon, Geophys Res Lett, 32 doi:101029/2005Gl024464


Data Activity or Cruise Information

Cruise

Cruise Name JC031
Departure Date 2009-02-03
Arrival Date 2009-03-03
Principal Scientist(s)Elaine McDonagh (National Oceanography Centre, Southampton)
Ship RRS James Cook

Complete Cruise Metadata Report is available here


Fixed Station Information

Fixed Station Information

Station NameDrake Passage - WOCE SR1
CategoryOffshore route/traverse

World Ocean Circulation Experiment (WOCE) Southern Repeat Section 1 - South America to West Antarctic Peninsula

WOCE established a repeat hydrographic section across Drake Passage and designated it SR1 (also known as A21). The section is located between the Southern tip of South America and the West Antarctic Peninsula within a bounding box of 55° 19.40' S, 68° 15.80' W (North-Western corner) and 64° 8.52' S, 63° 4.80' W (South-Eastern corner).

A table of cruises which occupied SR1 is presented below with links to the relevant cruise reports (where available).

Cruise Country Start Date End Date
R/V Meteor 11/5 Germany 23-01-1990 08-03-1990
Polarstern ANT 10-5 Germany 08-08-1992 26-09-1992
R/V Vidal Gormaz 20VDSR0193_1 Chile 02-11-1993 25-12-1993
R/V Vidal Gormaz 20VDSR0194_1 Chile 08-11-1994 08-12-1994
R/V Vidal Gormaz 20VDSR0195_1 Chile 04-12-1995 15-12-1995
R/V Vidal Gormaz 20VDSR0196_1 Chile 28-11-1996 13-12-1996
R/V Vidal Gormaz 20VDSR0198_1 Chile 26-11-1998 15-12-1998
RRS James Clark Ross JR40 United Kingdom 15-03-1999 22-04-1999
RRS James Cook JC031 United Kingdom 03-02-2009 03-03-2009
RRS James Cook JC054 United Kingdom 28-11-2010 08-01-2011
RRS James Cook JC069 United Kingdom 31-01-2012 22-03-2012

Other Series linked to this Fixed Station for this cruise - 912096 912103 912115 912127 912139 912140 912152 912164 912176 912188 912207 912219 912220 912232 912244 912256 912268 912281 912293 912300 912312 912324 912336 912348 912361 912373 912385 912397 912404 912416 912428 912441 912453 912465 912477 912489 912490 912508 912521 912533 912545 912557 912569 912570 912582 912594 912987 912999 913002 913014 913026 913038 913051 913063 913075 913087 913099 913106 913118 913131 913143 913155 913167 913179 913180 913192 913211 913223 913235 913247 913259 913260 913272 913284 913296 913303 913315 913327 913339 913340 913352 913364 913376 913388 913407 913419 913420 913432 913444 913456 913468 913481 935789 935790 935808 935821 935833 935845 935857 935869 935870 935882 935894 935901 935913 935925 935937 935949 935950 935962 935974 935986 935998 936001 936013 936025 936037 936049 936050 936062 936074 936086 936098 936105 936117 936129 936130 936142 936154 936166 936178 936191 936209 936210 936222 936234 936246 936258 936271 936283 1022017

Other Cruises linked to this Fixed Station (with the number of series) - JC054 (UKD-2) (45) JC069 (UKD-3) (8) JR19950320 (JR10) (128) JR20110409 (JR276, UKD-2.5) (13)

Fixed Station Information

Station NameDrake Passage
CategoryOffshore area
Latitude59° 0.00' S
Longitude62° 0.00' W
Water depth below MSL

Drake Passage

The World Ocean Circulation Experiment (WOCE, 1990-1998) was a major international experiment which made measurements and undertook modelling studies of the deep oceans in order to provide a much improved understanding of the role of ocean circulation in changing and ameliorating the Earth's climate.

The Drake Passage is the narrowest constriction of the Antarctic Circumpolar Current (ACC) - the largest current in the world and connects all three major oceanic basins both horizontally and vertically, thus being a key control in the global overturning circulation.Within the Drake Passage, two repeat hydrographic sections (SR1 and SR1b) were established by WOCE. These were designed to extend measurements collected earlier by the International Southern Ocean Studies (ISOS) programme and have continued beyond the WOCE time-frame.

The original section was SR1 (which also covers part of the A21 one time survey track). Subsequently, the section was shifted to the east (and designated SR1b) in order for it to lie on a satellite ground track as illustrated in the image below.

BODC image

In addition to the hydrographic measurements, UK research in Drake Passage also includes a network of coastal and deep tide gauges, analysis of satellite altimeter data, and state-of-the-art global numerical modeling.

Other Series linked to this Fixed Station for this cruise - 912096 912103 912115 912127 912139 912140 912152 912164 912176 912188 912207 912219 912220 912232 912244 912256 912268 912281 912293 912300 912312 912324 912336 912348 912361 912373 912385 912397 912404 912416 912428 912441 912453 912465 912477 912489 912490 912508 912521 912533 912545 912557 912569 912570 912582 912594 912601 912613 912625 912637 912649 912650 912662 912674 912686 912698 912705 912717 912729 912730 912742 912754 912766 912778 912791 912809 912810 912822 912834 912846 912858 912871 912883 912895 912902 912914 912926 912938 912951 912963 912987 912999 913002 913014 913026 913038 913051 913063 913075 913087 913099 913106 913118 913131 913143 913155 913167 913179 913180 913192 913211 913223 913235 913247 913259 913260 913272 913284 913296 913303 913315 913327 913339 913340 913352 913364 913376 913388 913407 913419 913420 913432 913444 913456 913468 913481 913493 913500 913512 913524 913536 913548 913561 913573 913585 913597 913604 913616 913628 913641 913653 913665 913677 913689 913690 913708 913721 913733 913745 913757 913769 913770 913782 913794 913801 913813 913825 913837 913849 913850 935789 935790 935808 935821 935833 935845 935857 935869 935870 935882 935894 935901 935913 935925 935937 935949 935950 935962 935974 935986 935998 936001 936013 936025 936037 936049 936050 936062 936074 936086 936098 936105 936117 936129 936130 936142 936154 936166 936178 936191 936209 936210 936222 936234 936246 936258 936271 936283 936295 936302 936314 936326 936338 936351 936363 936375 936387 936399 936406 936418 936431 936443 936455 936467 936479 936480 936492 936511 936523 936535 936547 936559 936560 936572 936584 936596 936603 936615 936627 936639 936640 936652 936664 1022017 1022029 1022042

Other Cruises linked to this Fixed Station (with the number of series) - JC041 (UKD-1) (66) JC054 (UKD-2) (146) JC069 (UKD-3) (24) JR16002 (61) JR19931120 (JR00a) (30) JR19941113 (JR0B) (29) JR19961128 (JR16) (29) JR20000113 (JR47) (29) JR20001121 (JR55) (32) JR20021224 (JR81) (32) JR20031211 (JR94) (30) JR20041201 (JR111, JR115) (35) JR20050124 (JR112, JR113) (5) JR20060216 (JR136, JR137) (1) JR20061206 (JR155, JR163, JR164) (1) JR20071129 (JR171, JR193, JR196 Leg1, JR212) (32) JR20091118 (JR195, JR198) (33) JR20101205 (JR242) (9) JR20110409 (JR276, UKD-2.5) (65) JR20130317 (JR252B, JR272B, JR273A, JR281, UKD-4) (175) JR20140309 (JR293 Leg1, JR299 Leg1, UKD-5) (21) JR20150110 (JR305, JR306) (1) RATS/CTD100 (1) RATS/CTD103 (1) RATS/CTD106 (1) RATS/CTD108 (1) RATS/CTD111 (1) RATS/CTD113 (1) RATS/CTD115 (1) RATS/CTD120 (1) RATS/CTD122 (1) RATS/CTD124 (1) RATS/CTD126 (1) RATS/CTD129 (1) RATS/CTD131 (1) RATS/CTD133 (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)


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