Metadata Report for BODC Series Reference Number 2207217

• 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 Quality Report of PAP1 moored Satlantic OCR-507 ICSW: DY130

The Satlantic OCR-507 ICSW (S/N: 200) did not always record data at the pre-set time, hours of data were not recorded throughout the deployment.

Data values were recorded after the umbilical cable was established to have broken on the 25^th of October 2021. These data have all been flagged as 'Improbable values'.

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

Satlantic {Sea-Bird} OCR-507 ICSW multispectral radiometer

A cosine-response submersible radiometer designed for multiwavelength measurements of irradiance for in-water use. The instrument uses silicon photodiodes as detectors and a custom low-fluorescence interference filter. The standard version comes with 7 customer defined channels that measure wavelengths in the bandwidth from 400 to 700 nm. The radiometer has a sampling rate of 7 to 24 Hz and a spectral bandwidth of 10 or 20 nm. The instrument can be mounted on real-time profilers, moored and autonomous deepwater buoys and autonomous underwater vehicles, and has a depth rating of 350 m. An optional bioshutter is available to decrease biofouling on the optical faces of the sensor. Bandwith range can be customised. Typical Noise Equivalent Irradiance (NEI) is 2.5 x 10-3 uW cm-2 nm-1.

For more information, please see this document: https://www.bodc.ac.uk/data/documents/nodb/pdf/Satlantic_MultiOCR_Manual.pdf

Processing by BODC of PAP1 moored Satlantic OCR-507 ICSW: DY130

The downwelling irradiance data were supplied to BODC in a single .CSV file and were converted to the BODC internal NetCDF format using standard BODC processing procedures. The variables provided in the .CSV file were mapped to BODC parameter codes as follows:

The reformatted data were visualised using the in-house EDSERPLO software. Suspect data were marked by adding an appropriate quality control flag, and missing data by both setting the data to an appropriate value and setting the quality control flag.

Processing by Originator of PAP1 moored Satlantic OCR-507 ICSW: DY130

Sampling Strategy

An Satlantic OCR-507 ICSW multispectral radiometer sensor (S/N: 200) was fitted to the PAP1 mooring on the sensor frame at 30 m depth, to record downwelling irradiance. The sensor was controlled by a Telemetry Unit, and was set to sample at 1 Hz for 2 minutes every 30 minutes.

The mooring was deployed at 48.9593 °N 16.4373 °W on the 3^rd April 2021 during RRS Discovery cruise DY130, and recovered on 5^th May 2022 during RRS James Cook cruise JC231.

Data Acquisition and Initial Processing

The umbilical cable connecting the sensor frame to the power source on the buoy failed on the 25^th of October 2021. The data hub's memory card was destroyed and therefore the only data acquired from the sensor are the near real-time (NRT) data. No calibrations nor corrections were applied to correct for any drift. Despite the settings, the instrument sampled for 90 seconds every 30 minutes (approximately), and the data were processed by averaging 29 x 1 Hz samples, i.e. there are three data points every 30 minutes.

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

Data Activity

Moored Instrument Rig PAP1_042021

This rig was deployed as part of the Porcupine Abyssal Plain (PAP) observatory project. 'PAP1_042021' refers to the deployment of mooring number 1 in April 2021 ('042021') located at the PAP Observatory. Further details of the deployment can be found in the DY130 cruise report.

Data summary

Instrumentation

The PAP1 mooring deployed on DY130 was the first complete platform using the MOBILIS surface buoy. The first deployment of the MOBILIS buoy on DY116 being recovered on this cruise did not have a sensor frame at 30m. Although both buoys have a modified keel skirt, the DY116 modification was double the mass of the one deployed on DY130 moving the centre of balance and buoyancy.

Related Data Activity activities are detailed in Appendix 1

Cruise

Complete Cruise Metadata Report is available here

Fixed Station Information

Fixed Station Information

Porcupine Abyssal Plain (PAP) Observatory

The Porcupine Abyssal Plain (PAP) observatory is a site at which moorings were deployed in the Northeastern Atlantic, as part of the ANIMATE (Atlantic Network of Interdisciplinary Moorings and Time-series for Europe), MERSEA (Marine Environment and Security for the European Area), EuroSITES, Oceans2025, Fix03 and CLASS projects. The PAP site is centred at latitude 49° N and longitude 16.5° W. Moorings have occupied this region since 2002 and are typically deployed for 12 months.

Please note: Near Real Time data is only stored at BODC where delayed mode data were not recovered. All near real time data can be found at the OceanSites GDA and through IFREMER.

Data summary

Status Indicators

Related Fixed Station activities are detailed in Appendix 2

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:

Appendix 1: PAP1_042021

Related series for this Data Activity are presented in the table below. Further information can be found by following the appropriate links.

If you are interested in these series, please be aware we offer a multiple file download service. Should your credentials be insufficient for automatic download, the service also offers a referral to our Enquiries Officer who may be able to negotiate access.

Appendix 2: Porcupine Abyssal Plain (PAP)

Related series for this Fixed Station are presented in the table below. Further information can be found by following the appropriate links.

If you are interested in these series, please be aware we offer a multiple file download service. Should your credentials be insufficient for automatic download, the service also offers a referral to our Enquiries Officer who may be able to negotiate access.