Metadata Report for BODC Series Reference Number 2205327

• 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

Problem Reports

No Problem Report Found in the Database

Data Access Policy

Open 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.

If the Information Provider does not provide a specific attribution statement, or if you are using Information from several Information Providers and multiple attributions are not practical in your product or application, you may consider using the following:

"Contains public sector information licensed under the Open Government Licence v1.0."

Narrative Documents

Teledyne RDI's Workhorse Monitor ADCP

The Workhorse Monitor acoustic doppler current profler (Teledyne RD Instruments) is a long-range and long-term self contained ADCP. It has a patented four beam signal (300, 600 or 1200 kHz) and a standard depth rating of 200m or 600m. It operates effectively between temperatures of -5°C and 45°C and has a velocity accuracy of ±1% ±5mm/s.

Processing by BODC of LADCP velocity profiles from CLASS/UK-OSNAP cruise JC238 using Teledyne RDI 300kHz Workhorse ADCP

JC238 Teledyne RDI 300kHz Workhorse ADCP data were submitted in file format .mat x43 from casts 001 - 044 (cast 42 was not processed), and were converted to QXF format (BODC internal NetCDF). Originator's variables were mapped to BODC parameter codes.

Processing by Originator of LADCP velocity profiles from CLASS/UK-OSNAP cruise JC238 using Teledyne RDI 300kHz Workhorse ADCP

Data Acquisition

Hydrographic data from UK-OSNAP cruise RRS James Cook JC238. Data includes CTD, LADCP and underway datasets collected from the North Atlantic (Scotland to Iceland Basin, around 57 N) between 12/7/2022 and 31/07/2022.

The CTD rosette was equipped with two 300-kHz Teledyne RDI Workhorse Monitor LADCP's. One, the downlooker (Master, s/n 23444), was installed in a downward looking orientation while the other, the uplooker (Slave, s/n 12369), was installed in an upward looking configuration.

Calibration

Checks for faults in the LADCP were done before every cast with pre-deployment and deployment scripts to set ping, bin, transformation parameters, and to start the LADCP heads pinging. To reduce interference between the two LADCP's the Slave LADCP was set to ping in response to the Master LADCP.

Cast 42 was not processed due to the instrument not reaching sufficient depth (~100m) before being recovered and redeployed without restarting the LADCP files.

JC238 Cruise report

Further information can be found in the JC238 Cruise report.

Project Information

Marine LTSS: CLASS (Climate Linked Atlantic Sector Science)

Introduction

CLASS is a five year (2018 to 2023) programme, funded by the Natural Environment Research Council (NERC) and extended until March 2024.

Scientific Rationale

The ocean plays a vital role in sustaining life on planet Earth, providing us with both living resources and climate regulation. The trajectory of anthropogenically driven climate change will be substantially controlled by the ocean due to its absorption of excess heat and carbon from the atmosphere, with consequent impacts on ocean resources that remain poorly understood. In an era of rapid planetary change, expanding global population and intense resource exploitation, it is vital that there are internationally coordinated ocean observing and prediction systems so policy makers can make sound evidence-based decisions about how to manage our interaction with the ocean. CLASS will underpin the UK contribution to these systems, documenting and understanding change in the marine environment, evaluating the impact of climate change and effectiveness of conservation measures and predicting the future evolution of marine environments. Over the five-year period CLASS will enhance the cost-effectiveness of observing systems by migrating them towards cutting edge autonomous technologies and developing new sensors. Finally, CLASS will create effective engagement activities ensuring academic partners have transparent access to NERC marine science capability through graduate training partnerships and access to shipborne, lab based and autonomous facilities, and modelling capabilities.

Data Activity or Cruise Information

Cruise

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:

SeaDataNet Quality Control Flags

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