JavaScript is disabled in your browser - some features of this site will not work without it [more]

Metadata Report for BODC Series Reference Number 1721102

Metadata Summary
Problem Reports
Data Access Policy
Narrative Documents
Project Information
Data Activity or Cruise Information
Fixed Station Information
BODC Quality Flags
SeaDataNet Quality Flags

Metadata Summary

Data Description

Data Category

Currents -subsurface Eulerian

Instrument Type

Name	Categories
Aanderaa Seaguard Recording Current Meter	current meters

Instrument Mounting

subsurface mooring

Originating Country

United Kingdom

Originator

Dr Alberto Naveira Garabato

Originating Organization

University of Southampton School of Ocean and Earth Science

Processing Status

banked

Project(s)

DIMES

Data Identifiers

Originator's Identifier	NE_1_2009/116
BODC Series Reference	1721102

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm)	2009-12-09 12:29
End Time (yyyy-mm-dd hh:mm)	2010-01-27 09:29
Nominal Cycle Interval	899.0 seconds

Spatial Co-ordinates

Latitude	55.96300 S ( 55° 57.8' S )
Longitude	57.74433 W ( 57° 44.7' W )
Positional Uncertainty	0.0 to 0.01 n.miles
Minimum Sensor Depth	394.0 m
Maximum Sensor Depth	394.0 m
Minimum Sensor Height	3581.0 m
Maximum Sensor Height	3581.0 m
Sea Floor Depth	3975.0 m
Sensor Distribution	Fixed common depth - All sensors are grouped effectively at the same depth which is effectively fixed for the duration of the series
Sensor Depth Datum	Approximate - Depth is only approximate
Sea Floor Depth Datum	Instantaneous - Depth measured below water line or instantaneous water body surface

Parameters

BODC CODE	Rank	Units	Short Title	Title
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
ASAMACMX	1	Decibels	Amplitude_ACM	Signal return amplitude from the water body by in-situ acoustic current meter
HEADCM01	1	Degrees	Platform_Heading	Orientation (horizontal relative to true north) of measurement device {heading}
LCEWEL01	1	Centimetres per second	CurrVelE_CM	Eastward current velocity (Eulerian) in the water body by in-situ current meter
LCNSEL01	1	Centimetres per second	CurrVelN_CM	Northward current velocity (Eulerian) in the water body by in-situ current meter
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

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

NW mooring

Data were unavailable from Sontek Argonaut current meter (#332) after 07/09/2010. The Aanderaa Seaguard recording current meters on this mooring continued to record until the mooring was recovered December 2010. There is no explanation in the JC054 recovery cruise report (p.129) as to why this series is truncated.

M mooring

Sea-Bird SBE37 IMP MicroCAT (#3889) did not record data for the first 23 days of deployment.

Data were unavailable from Sontek Argonaut current meter (#278) after 04/10/2010, so there is a 2 month data gap at the end of the record.

NE mooring

Data were unavailable from Sea-Bird SBE37 IMP MicroCAT (#4063) and Sea-Bird SBE37 SMP MicroCATs (#7292, #7293, #7294, #7295) after 27/01/2010 due to two severe knockdown events on 24th and 27th January 2010 (~200db at uppermost instrument). Therefore data are only available for the first 6 weeks of deployment.

Data were unavailable from Nortek Aquadopp current meter (#5883) and Aanderaa Seaguard recording current meters (#113, #116, #118) after 27/01/2010. This matches the knockdown events in January 2010 which affected the MicroCATs on this mooring.

SW mooring

Data were unavailable from Sea-Bird SBE37 IMP MicroCAT (#4465) and Sea-Bird SBE37 SMP MicroCATs (#7300, #7301, #7302, #7303) after 03/02/2010 due to this mooring experiencing similar knockdown events to those of the NE mooring. Good data are only available until this date, a week later than the NE mooring.

Data were unavailable from Sontek Argonaut (#298) and Aanderaa Seaguard recording current meters (#123, #124, #125, #127) after 03/02/2010. This matches the knockdown events which affected the MicroCATs on this mooring.

Data Access Policy

Public domain data

These data have no specific confidentiality restrictions for users. However, users must acknowledge data sources as it is not ethical to publish data without proper attribution. Any publication or other output resulting from usage of the data should include an acknowledgment.

The recommended acknowledgment is

"This study uses data from the data source/organisation/programme, provided by the British Oceanographic Data Centre and funded by the funding body."

Narrative Documents

Aanderaa SEAGUARD Recording Current Meter

A multi-frequency Doppler current sensor for measuring horizontal current speed and direction. The shallow water (SW), intermediate water (IW) and deep water (DW) models can be deployed to 300 m, 2000 m and 6000 m, respectively. The instrument has a maximum sampling rate of 0.5 Hz, a velocity range of 0 - 300 cm/s, and incorporates an electronic compass and a tilt sensor. A number of additional oceanographic sensors may also be attached.

Further details can be found in the manufacturer's specification sheet .

DIMES Current Meter data processing document

This document outlines the procedures undertaken to process and quality assure current meter data collected under the DIMES project. These procedures follow those of the RAPIDMOC and MOCHA projects, which are outlined below.

Originator's processing

The raw data are downloaded from the instrument and converted to ASCII format.

Once in ASCII format the data are corrected for the following -

Speed bias (caused by the mooring motion)
Sound speed (as electromagnetic current meter sensors use the speed of sound in water to calculate the doppler shift in the returned signal, they are corrected for variations in sound speed using temperature data as sound speed varies with temperature).
Magnetic variation

A 40 hour low pass filter is also applied to the data.

Calculating and applying calibrations

Manufacturers calibrations are applied.

Quality Control

Data were visually inspected for out-lying data and instrument electrical spikes removed.

BODC processing

Data are received after quality checks have been made and calibrations have been applied. The data files are submitted in ASCII format as one file per instrument.

Once the submitted data files are safely archived, the data undergo reformatting and banking procedures:

The data files are transferred into a common format, a NetCDF subset.
Standard parameter codes are assigned that accurately describe the data (see Parameter mapping section below).
Unit conversions are applied, if necessary, so that units are standardised (see Parameter mapping section below).
The data are screened visually and any spikes or instrument malfunctions can be clearly labelled with quality control flags.
Comprehensive documentation is prepared describing the collection, processing and quality of each data series.
Detailed metadata and documents are loaded to the database and linked to each series so that the information is readily available to future users.

Parameter mapping

The following describes the parameters contained in the originator's files and their mapping to BODC parameter codes.

Nortek Aquadopp 6000 3D Doppler current meter and SonTek Argonaut moored 3D doppler current meter

Identifier	Unit	Definition	BODC parameter code	Units	Unit conversion	Comments
YY	year	Year	AADYAA01	days	-	Combined with MM and DD to form a date and transferred
MM	month	Month	AADYAA01	days	-	Combined with MM and DD to form a date and transferred
DD	day	Day	AADYAA01	days	-	Combined with MM and DD to form a date and transferred
HH	hour	Decimal hours	AAFDZZ01	days	/24	Transferred
T	°C	Temperature	TEMPPR01	°C	-	Transferred
P	dbar	Pressure	PRSTPR01	dbar	-	Transferred
U	cm/s	Eastward velocity	LCEWEL01	cm/s	-	Transferred
V	cm/s	Northward velocity	LCNSEL01	cm/s	-	Transferred
W	cm/s	Upward velocity	LRZASP01	cm/s	-	Transferred
USS	dimensionless	Signal return amplitude beam 1	ISCMBMA1	dimensionless	-	Transferred
VSS	dimensionless	Signal return amplitude beam 2	ISCMBMA2	dimensionless	-	Transferred
WSS	dimensionless	Signal return amplitude beam 3	ISCMBMA3	dimensionless	-	Transferred
PIT	degrees	Pitch	PTCHFG01	degrees	-	Transferred
ROL	degrees	Roll	ROLLFG01	degrees	-	Transferred
IPOW	volts	Battery voltage	BTVOLTCM	volts	-	Transferred

Aanderaa Seaguard Recording Current Meter

Identifier	Unit	Definition	BODC parameter code	Units	Unit conversion	Comments
YY	year	Year	AADYAA01	days	-	Combined with MM and DD to form a date and transferred
MM	month	Month	AADYAA01	days	-	Combined with MM and DD to form a date and transferred
DD	day	Day	AADYAA01	days	-	Combined with MM and DD to form a date and transferred
HH	hour	Decimal hours	AAFDZZ01	days	/24	Transferred
U	cm/s	Eastward velocity	LCEWEL01	cm/s	-	Transferred
V	cm/s	Northward velocity	LCNSEL01	cm/s	-	Transferred
MSS	decibels	Mean signal strength	ASAMACMX	decibels	-	Transferred
HDG	degrees	Heading	HEADCM01	degrees	-	Transferred
PIT	degrees	Pitch	PTCHFG01	degrees	-	Transferred
ROL	degrees	Roll	ROLLFG01	degrees	-	Transferred

Project Information

Diapycnal and Isopycnal Mixing Experiment in the Southern Ocean (DIMES) project document

DIMES is a US/UK field program aimed at measuring diapycnal and isopycnal mixing in the Southern Ocean, along the tilting isopycnals of the Antarctic Circumpolar Current.

The Meridional Overturning Circulation (MOC) of the ocean is a critical regulator of the Earth's climate processes. Climate models are highly sensitive to the representation of mixing processes in the southern limb of the MOC, within the Southern Ocean, although the lack of extensive in situ observations of Southern Ocean mixing processes has made evaluation of mixing somewhat difficult. Theories and models of the Southern Ocean circulation have been built on the premise of adiabatic flow in the ocean interior, with diabatic processes confined to the upper-ocean mixed layer. Interior diapycnal mixing has often been assumed to be small, but a few recent studies have suggested that diapycnal mixing might be large in some locations, particularly over rough bathymetry. Depending on its extent, this interior diapycnal mixing could significantly affect the overall energetics and property balances for the Southern Ocean and in turn for the global ocean. The goals of DIMES are to obtain measurements that will help us quantify both along-isopycnal eddy-driven mixing and cross-isopycnal interior mixing.

DIMES includes tracer release, isopycnal following RAFOS floats, microstructure measurements, shearmeter floats, EM-APEX floats, a mooring array in Drake Passage, hydrographic observations, inverse modeling, and analysis of altimetry and numerical model output.

DIMES is sponsored by the National Science Foundation (U.S.), Natural Environment Research Council (U.K) and British Antarctic Survey (U.K.)

For more information please see the official project website at DIMES

Data Activity or Cruise Information

Data Activity

Start Date (yyyy-mm-dd)	2009-12-09
End Date (yyyy-mm-dd)	2010-12-06
Organization Undertaking Activity	University of Southampton School of Ocean and Earth Science
Country of Organization	United Kingdom
Originator's Data Activity Identifier	NE_1_2009
Platform Category	subsurface mooring

DIMES Moored Instrument Rig NE_1_200912

This rig was deployed as part of the mooring array of the DIMES (Diapycnal and isopycnal mixing experiment in the Southern Ocean) project.

Deployment cruise	RRS James Cook cruise JC041
Recovery cruise	RRS James Cook cruise JC054

The rig was anchored by a 1950 kg dead weight and kept erect with groups of glass spheres and floats distributed along the mooring.

Instruments deployed on the rig

Depth	Instrument
292m	Aanderaa Seaguard Recording Current Meter (#113)
292m	Sea-Bird SBE37 SMP MicroCAT (#7292)
394m	Aanderaa Seaguard Recording Current Meter (#116)
394m	Sea-Bird SBE37 SMP MicroCAT (#7293)
1089m	Aanderaa Seaguard Recording Current Meter (#118)
1089m	Sea-Bird SBE37 SMP MicroCAT (#7294)
1846m	Nortek Aquadopp 6000 3D Doppler current meter (#5883)
1847m	Sea-Bird SBE37 SMP MicroCAT (#7295)
3376m	Aanderaa RCM 11 Recording Current Meter (#300)*
3376m	Sea-Bird SBE37 IMP MicroCAT (#4063)

* Aanderaa RCM 11 Recording Current Meter (#300) was flooded on recovery, so was jettisoned for safety reasons.

Other Series linked to this Data Activity - 1720701 1720694 1720713 1720737 1721083 1721095 1721114 1720725

Cruise

Cruise Name	JC041 (UKD-1)
Departure Date	2009-12-05
Arrival Date	2009-12-21
Principal Scientist(s)	Alberto C Naveira Garabato (University of Southampton School of Ocean and Earth Science)
Ship	RRS James Cook

Complete Cruise Metadata Report is available here

Fixed Station Information

Station Name	Drake Passage
Category	Offshore area
Latitude	59° 0.00' S
Longitude	62° 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.

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 - 1720541 1720553 1720565 1720577 1720589 1720590 1720608 1720621 1720633 1720645 1720657 1720669 1720670 1720682 1720694 1720701 1720713 1720725 1720737 1720749 1720750 1720762 1720774 1720786 1720798 1720805 1720817 1720829 1720830 1720842 1720854 1720866 1720878 1720891 1720909 1720910 1720922 1720934 1720946 1720958 1720971 1720983 1720995 1721009 1721010 1721022 1721034 1721046 1721058 1721071 1721083 1721095 1721114 1721126 1721138 1721151 1721163 1721175 1721187 1721199 1721206 1721218 1721231 1721243 1721255

Other Cruises linked to this Fixed Station (with the number of series) - JC031 (247) JC054 (UKD-2) (146) JC069 (UKD-3) (26) JR15003 (28) 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) (4) 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) (66) 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