PML PML's ERDDAP
Easier access to scientific data at PML 		log in | ?    
Brought to you by PML NOAA NMFS SWFSC ERD    
 
 
Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL abstract String This dataset contains full depth observations of horizontal velocities recorded with a Nortek Signature 500 acoustic Doppler current profiler (500 kHz, 5 beam configuration, S/N100680) deployed upward facing on a seabed mounted frame at site M3 in the northern North Sea, near the Kincardine Floating Offshore Wind Farm. The instrument collected 20 minute bursts at 4 Hz every hour, beginning at 21 minutes past the hour, and was deployed and recovered during the DY197 research expedition (RRS Discovery). The dataset spans 14 August 2025 at 16:31 UTC to 3 September 2025 at 08:31 UTC. The deployment site is located at 56.989897° N, â^'1.882947°E, and the instrument remained fixed for the duration of the deployment.\nThese observations were collected as part of the NERC and Crown Estate funded ECOFlow programme, EQUIFy, Establishing a Framework for Quantifiable Evidence and Impact of Ecosystem Change Throughout the Lifecycle of UK Floating Offshore Wind Farms, grant number NE/Z504099/1. EQUIFy aims to co-deliver a transferable, monitoring and evidence framework that quantifies the ecological impacts from potential future FLOW farms. It will assess the compound and cumulative ecological, social and economic effects of FLOW at a range of scales using historical and contemporary data to underpin predictions of likely future pressures including changing marine use and within the context of a changing climate
attribute NC_GLOBAL acknowledgement String EQUIFy is part of the NERC and Crown Estate funded ECOFlow programme, grant number NE/Z504099/1. The authors wish to thank the officers and crew of RRS Discovery, the NMF staff and the eSWEETS3 project for their assistance in collecting these data.
attribute NC_GLOBAL analytical_protocol String Raw Nortek Signature 500 files (.ad2cp) were converted to MATLAB format using Nortek Signature software. During conversion, the along beam velocities were transformed into Earth coordinate horizontal velocities (east and north) and vertical velocity, expressed in metres per second. All 4 Hz pings within each 20 minute burst were averaged to produce one hourly velocity profile. Final timestamps represent the midpoint of the 20 minute sampling window. The native bin structure of 23 depth cells at 3 m vertical resolution was retained.\n        Velocity samples affected by strong sea surface echoes were removed to eliminate side lobe contamination in the upper part of the profile. The nearest bin to the transducer head also showed consistently high, comparatively elevated levels of vertical shear of the horizontal velocities squared, S2 (s 2), and relatively low beam correlations, so this bin was blanked. Compass corrections were applied using independently recorded VMADCP data from DY197.\n        All variables are provided in Earth coordinates and expressed in standard SI units.
attribute NC_GLOBAL averaging String 20-minute burst-averaged data
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL contact String jwi at pml.ac.uk
attribute NC_GLOBAL contributor_institution String Scottish Government's Marine Directorate; Environmental Research Institute - University of the Highlands and Islands; Plymouth Marine Laboratory
attribute NC_GLOBAL contributor_name String Rory O'Hara Murray, Benjamin Williamson, Matthew Palmer
attribute NC_GLOBAL contributor_role String Data collection/processing, Data collection; Funding
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL CreatedBy String Juliane Wihsgott
attribute NC_GLOBAL CreationDate String 2025/12/22 12:41:30
attribute NC_GLOBAL creator_email String jwi at pml.ac.uk
attribute NC_GLOBAL creator_name String JWI
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.pml.ac.uk (external link)
attribute NC_GLOBAL cruise String DY197
attribute NC_GLOBAL data_quality_comments String The instrument remained stable throughout the deployment due to the gimbal mounted frame, and no significant tilt or heading issues were observed. Beam correlations across most of the water column were consistent with expected performance for a 500 kHz Signature instrument, and the hourly averaged profiles provide a reliable representation of the flow field. Minor data loss occurred in the near surface and near the instrument head, which is typical for upward facing ADCPs, but these effects were handled during processing.
attribute NC_GLOBAL date_range_human String 14-Aug-2025 16:31 to 03-Sep-2025 08:31
attribute NC_GLOBAL geospatial_vertical_max double 65.86107257023775
attribute NC_GLOBAL geospatial_vertical_min double -3.9550383083889784
attribute NC_GLOBAL geospatial_vertical_positive String down
attribute NC_GLOBAL geospatial_vertical_units String m
attribute NC_GLOBAL infoUrl String https://www.ecoflow.org.uk/ecoflow-about (external link)
attribute NC_GLOBAL institution String Plymouth Marine Laboratory
attribute NC_GLOBAL keywords String acoustic, adcp, bedframe, current, currents, depth, Doppler, e-w, Kincardine, moored, n-s, North Sea, observations, profiler, velocities, velocity
attribute NC_GLOBAL Latitude double 56.989897
attribute NC_GLOBAL license String Permission is granted to EQUIFy project partner institutes and interested parties to use this dataset for research and analytical purposes only. Redistribution, republication, or any form of data sharing with unauthorized third parties is strictly prohibited without prior written consent from the data owner. All users must acknowledge the source of the dataset in any publications or outputs.
attribute NC_GLOBAL long_title String Quality controlled observations of full-depth horizontal and vertical current velocities collected by a bottom mounted, upward facing Nortek Signature 500 acoustic Doppler current profiler
attribute NC_GLOBAL Longitude double -1.882947
attribute NC_GLOBAL metadata_version String 0.1.0
attribute NC_GLOBAL processing_level String 3
attribute NC_GLOBAL project String EQUIFy
attribute NC_GLOBAL sampling_protocol String A Nortek Signature 500 ADCP (500 kHz, 5 beam configuration, S/N 100680) was deployed upward facing on a stable seabed mounted frame at site M3 (56.989897° N, â^'1.882947°E) in the northern North Sea near the Kincardine Floating Offshore Wind Farm. The instrument was deployed and recovered during the DY197 research expedition (RRS Discovery).\nThe ADCP operated in burst mode to avoid interference with the alongside echosounder and passive acoustics. Each burst consisted of 4800 samples collected at 4 Hz over a 20 minute period. The ADCP sampled every 60 minutes and began at 21 minutes past each hour. Velocities were resolved across 23 bins with a 3 m bin size, providing depth resolved coverage from above the transducer head to the near surface, with standard blanking in the near field and occasional upper bin loss under energetic sea states.\nThe dataset covers the full observation period from 14 August 2025 at 16:31 UTC to 3 September 2025 at 08:31 UTC.
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v70
attribute NC_GLOBAL summary String Moored (bedframe) 5-beam 500kHz Acoustic Doppler Current Profiler (ADCP) velocity observations, North Sea, 14-Aug-25 - 03-Sep-25. Data are 20-minute burst-averaged. Test ADCP data. Plymouth Marine Laboratory data from a local source.
attribute NC_GLOBAL time_coverage_end String 2025-09-02T08:31:00Z
attribute NC_GLOBAL time_coverage_start String 2025-08-13T16:31:00Z
attribute NC_GLOBAL title String EQUIFy - Kincardine ADCP current velocity - M3 - Level 3 - V1.0
variable mab double
attribute mab _FillValue double -9999.0
attribute mab actual_range double 3.5, 69.5
attribute mab ioos_category String Unknown
attribute mab long_name String Bin centre positions in metres above the bed (relative to the instrument)
attribute mab short_name String Metres above bed (relative to instrument)
attribute mab units String m
variable time double
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.755102660001E9, 1.756801860001E9
attribute time axis String T
attribute time calendar String Gregorian
attribute time ioos_category String Time
attribute time long_name String Time replicated across bins for plotting
attribute time short_name String time_matrix
attribute time source_name String ddm
attribute time standard_name String time
attribute time time_origin String 01-JAN-1970 00:00:00
attribute time units String seconds since 1970-01-01T00:00:00Z
variable depth double
attribute depth _CoordinateAxisType String Height
attribute depth _CoordinateZisPositive String down
attribute depth _FillValue double -9999.0
attribute depth actual_range double -3.9550383083889784, 65.86107257023775
attribute depth axis String Z
attribute depth colorBarMaximum double 8000.0
attribute depth colorBarMinimum double -8000.0
attribute depth colorBarPalette String TopographyDepth
attribute depth ioos_category String Location
attribute depth long_name String Depth of bin centres (relative to sea bed)
attribute depth positive String down
attribute depth short_name String dpt
attribute depth standard_name String depth
attribute depth units String m
variable ve double
attribute ve _FillValue double -9999.0
attribute ve actual_range double -0.31503810726866127, 0.3582151986381775
attribute ve ioos_category String Currents
attribute ve long_name String E-W horizontal velocities
attribute ve units String m s-1
variable vn double
attribute vn _FillValue double -9999.0
attribute vn actual_range double -0.8609384972799612, 0.7630591314677946
attribute vn ioos_category String Currents
attribute vn long_name String N-S horizontal velocities
attribute vn units String m s-1
variable vv double
attribute vv _FillValue double -9999.0
attribute vv actual_range double -0.02354145940288921, 0.025742084463466503
attribute vv ioos_category String Currents
attribute vv long_name String Vertical 5th beam velocities
attribute vv units String m s-1

 
ERDDAP, Version 2.22
Disclaimers | Privacy Policy | Contact