Metadata Report for BODC Series Reference Number 1296006


Metadata Summary

Data Description

Data Category Water sample data
Instrument Type
NameCategories
Technicap NOEX bottle  discrete water samplers
Instrument Mounting lowered unmanned submersible
Originating Country Netherlands
Originator Dr Hans van Haren
Originating Organization Royal Netherlands Institute for Sea Research
Processing Status banked
Project(s) Provess
 

Data Identifiers

Originator's Identifier PE136_CTD_NUTS_162:CTD038
BODC Series Reference 1296006
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 1999-04-02 19:05
End Time (yyyy-mm-dd hh:mm) -
Nominal Cycle Interval -
 

Spatial Co-ordinates

Latitude 52.30366 N ( 52° 18.2' N )
Longitude 4.31348 E ( 4° 18.8' E )
Positional Uncertainty Unspecified
Minimum Sensor Depth 0.5 m
Maximum Sensor Depth 15.1 m
Minimum Sensor Height 3.7 m
Maximum Sensor Height 18.3 m
Sea Floor Depth 18.8 m
Sensor Distribution Unspecified -
Sensor Depth Datum Unspecified -
Sea Floor Depth Datum Instantaneous - Depth measured below water line or instantaneous water body surface
 

Parameters

BODC CODE Rank Units Short Title Title
ADEPZZ01 1 Metres DepBelowSurf Depth below surface of the water body
AMONAAD5 1 Micromoles per litre NH4_0.2umFilt_ColAA Concentration of ammonium {NH4+ CAS 14798-03-9} per unit volume of the water body [dissolved plus reactive particulate <0.2um phase] by filtration and colorimetric autoanalysis
BOTTFLAG 1 Dimensionless C22_flag Sampling process quality flag (BODC C22)
NTRIAAD5 1 Micromoles per litre NO2_0.2umFilt_NO2CorrColAA Concentration of nitrite {NO2- CAS 14797-65-0} per unit volume of the water body [dissolved plus reactive particulate <0.2um phase] by filtration and colorimetric autoanalysis
NTRZAAD5 1 Micromoles per litre NO3+NO2_0.2umFilt_ColAA Concentration of nitrate+nitrite {NO3+NO2} per unit volume of the water body [dissolved plus reactive particulate <0.2um phase] by filtration and colorimetric autoanalysis
PHOSAAD5 1 Micromoles per litre PO4_0.2umFilt_ColAA Concentration of phosphate {PO43- CAS 14265-44-2} per unit volume of the water body [dissolved plus reactive particulate <0.2um phase] by filtration and colorimetric autoanalysis
SAMPRFNM 1 Dimensionless SampRef Sample reference number
SLCAAAD5 1 Micromoles per litre SiOx_0.2umFilt_ColAA Concentration of silicate {SiO44- CAS 17181-37-2} per unit volume of the water body [dissolved plus reactive particulate <0.2um phase] by filtration and colorimetric autoanalysis
 

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

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

Technicap NOEX bottle

The Technicap NOEX water bottle was designed for oceanographic sampling. The bottle comprises a plastic tube with caps at each end and is deployed with the caps held open, then closed at the target depth. Multiple bottles can be deployed on a CTD frame rosette. Bottle capacity is variable, but normally several litres. The bottle was developed by Technicap in the 1990s but has been superseded by more recent models. There is no known source of support available for this sampler.

Dissolved inorganic nutrient data series for cruise Pelagia PE136

Document History

Converted from CDROM documentation

Data Originator

Hans van Haren, Nederlands Instituut voor Onderzoek der Zee (NIOZ), Texel, The Netherlands.

Content of data series

Parameter Unit Parameter code Number of samples Number of stations Comments
Silicate µmol l -1 SLCAAAD5 41 15 CTD none
Phosphate µmol l -1 PHOSAAD5 41 15 CTD none
Nitrite µmol l -1 NTRIAAD5 41 15 CTD none
Nitrate+nitrite µmol l -1 NTRZAAD5 41 15 CTD none
Ammonium µmol l -1 AMONAAD5 41 15 CTD none

CTD = CTD-Rosette water column sampling station.

Sampling strategy and methodology

Water samples were typically collected from near-surface (ca. 3 m) and near-bottom (ca. 15 m) depths several times daily using the CTD-rosette water sampler. Intermediate depths were also sampled on a few casts. A batch of subsamples for nutrient measurements were stored at -20°C prior to analysis. Subsamples for silicate analysis were stored separately at +4°C. Nutrients were analysed using a Technicon TrAAcs800 autoanalyser after filtration of the samples through sterile 0.2 µm Acrodisc Gelman filters.

BODC processing

The data were loaded into a database under the ORACLE Relational Database Management System without modification.

Comments on data quality

None to report.


Project Information

PROcesses of Vertical Exchange in Shelf Seas (PROVESS)

Introduction

PROVESS was an interdisciplinary study of the vertical fluxes of properties through the water column and the surface and bottom boundary layers. The project was funded by the European Community MAST-III programme (MAS3-CT97- 0159) and ran from March 1998 to May 2001.

Scientific Rationale

PROVESS was based on the integration of experimental, theoretical and modelling studies with the aim of improving understanding and quantification of vertical exchange processes in the water column, in particular in the surface and benthic boundary layers and across the> pycnocline. PROVESS also explored mechanisms of physical-biological coupling in which vertical exchanges and turbulence significantly affect the environmental conditions experienced by the biota with particular reference to aggregation, flocculation, sedimentation and trophic interactions.

Fieldwork

The experimental phase of the project was carried out at two contrasting sites in the North Sea: the northern North Sea site (NNS) and the southern North Sea site (SNS).

The two sites had the following characteristics:

SNS NNS
Position 52° 15.0' N, 4° 17.0' E 59° 20.0' E, 1° 00.0' E
Time of year April-May September-November
Water depth (m) 16 100
M2 max amplitude (m s-1) 0.75 0.15
Max current (m s-1) 1.0 0.6
Delta T (deg C) mixed 7-1
Thermocline depth (m) mixed 35-100
Delta S 1 small
Halocline depth (m) 5-10 cf. thermocline depth
Max wind speed (m s-1) 20 25
Max wave height (m) 5 10
Max wave period (s) 8 10
Internal motion No Yes
Sediment muddy-sand muddy-sand
Biology eutrophic oligotrophic

At both locations measurements were concentrated at a central position with additional measurements being made to estimate horizontal gradients. Moored instruments (including current meters, temperature and pressure sensors, fluorometers, transmissometers, nutrient analysers and meteorological sensors) were deployed between 7 September and 5 November 1998 at the NNS and between 29 March and 25 May 1999 at the SNS. Each experiment was supported by intensive measurement series made from oceanographic ships and involving turbulence dissipation profiler CTD, particle size profilers, optical profilers, benthic sampling and water bottle sampling.

Details of the cruises were as follows:

Site Ship
(nationality)
Cruise
Mnemonic
Date
NNS Valdivia (GER) VA174 5 - 17 Sep 1998
  Dana (DK) D1198 14 - 26 Oct 1998
  Pelagia (NL) PE125 19 - 30 Oct 1998
  Challenger (UK) CH140 22 Oct - 9 Nov 1998
SNS Pelagia (NL) PE135 29 Mar - 9 Apr 1999
  Mitra (NL) MT0499 19 - 30 Apr 1999
  Belgica (BE) BG9912 17 - 21 May 1999

Data Activity or Cruise Information

Data Activity

Start Date (yyyy-mm-dd) 1999-04-02
End Date (yyyy-mm-dd) 1999-04-02
Organization Undertaking ActivityRoyal Netherlands Institute for Sea Research
Country of OrganizationNetherlands
Originator's Data Activity IdentifierPE136_CTD_CTD038
Platform Categorylowered unmanned submersible

BODC Sample Metadata Report for PE136_CTD_CTD038

Sample reference number Nominal collection volume(l) Bottle rosette position Bottle firing sequence number Minimum pressure sampled (dbar) Maximum pressure sampled (dbar) Depth of sampling point (m) Bottle type Sample quality flag Bottle reference Comments
382723   12.00         .20    1.70     .50 Technicap NOEX bottle No problem reported    
382724   12.00        2.20    3.70    2.40 Technicap NOEX bottle No problem reported    
382725   12.00       15.00   16.50   15.10 Technicap NOEX bottle No problem reported    
382726   12.00        3.00    4.50    3.20 Technicap NOEX bottle No problem reported    
382789   12.00         .50    2.00     .70 Technicap NOEX bottle No problem reported    

Please note:the supplied parameters may not have been sampled from all the bottle firings described in the table above. Cross-match the Sample Reference Number above against the SAMPRFNM value in the data file to identify the relevant metadata.

Cruise

Cruise Name PE136
Departure Date 1999-03-29
Arrival Date 1999-04-09
Principal Scientist(s)Hans van Haren (Royal Netherlands Institute for Sea Research)
Ship RV Pelagia

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