Metadata Report for BODC Series Reference Number 582194
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 |
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Data Identifiers |
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Time Co-ordinates(UT) |
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Spatial Co-ordinates | |||||||||||||||||||||||||||||
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Parameters |
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Problem Reports
Occasional data values marked as suspect throughout the series, particularly between data values marked as null.
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
Bathymetric Survey: CD682/1992 USNGDC No: 19180018
| Bathymetric Survey Reference | CD682/1992 |
|---|---|
| USNGDC No | 19180018 |
| WOCE Expocode | 74AB68_1; RRS Charles Darwin Cruise 68 |
| WOCE Section | AR10 |
| Source Institution | Natural Environment Research Council, UK |
| Survey Platform | RRS Charles Darwin |
| Chief Scientist | A.J Watson, PML |
| Date of Departure | 09 May 1992 |
| Port of Departure | Las Palmas, Canary Islands |
| Date of Arrival | 31 May 1992 |
| Port of Arrival | Barry, UK |
| Start of Survey | 1992 05 09 1324 hours |
| Start Position | 27° 19.88'N, 018° 07.76'W |
| End of Survey | 1992 05 31 0952 hours |
| End Position | 25° 57.57'N, 028° 31.47'W |
| Navigation Instrumentation | GPS |
| Bathymetry Instrumentation | Simrad EA500 10 kHz Echo-Sounder |
WOCE Bathymetry Screening carried out by BODC
BODC have screened the series header information and the parameter values in the data cycles. Header information has been inspected for irregularities and inconsistencies between related information.
Positions have been checked using a visual inspection on a world map and by calculating platform speed. Time channels have been checked and corrected where appropriate. Duplicate data cycles have been removed.
Data cycles have been visually inspected and compared to ETOPO5 for guidance: Discovery cruises have bathymetry flagged where depth > 1000+ETOPO5. No data values have been altered, values suspected to be dubious have been marked as suspect. Caution documents have been written where appropiate.
Project Information
World Ocean Circulation Experiment (WOCE)
The World Ocean Circulation Experiment (WOCE) 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.
WOCE had two major goals:
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Goal 1. To develop models to predict climate and to collect the data necessary to test them.
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Goal 2. To determine the representativeness of the Goal 1 observations and to deduce cost effective means of determining long-term changes in ocean circulation.
Data Activity or Cruise Information
Cruise
| Cruise Name | CD68 |
| Departure Date | 1992-05-08 |
| Arrival Date | 1992-06-08 |
| Principal Scientist(s) | Andrew J Watson (Marine Biological Association of the UK) |
| Ship | RRS Charles Darwin |
Complete Cruise Metadata Report is available here
Fixed Station Information
No Fixed Station Information held for the Series
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 |
| B | nominal value |
| Q | value below limit of quantification |
