3-D Single Point Velocity Meter

Reference Designator
CP03ISPM-WFP01-01-VEL3DK000
Review Status
Review Complete
Note
Velocity data from profilers were run through the automated QC tests, but were not plotted or reviewed visually.
Depth
15 to 70m
Class
VEL3D (3-D Single Point Velocity Meter)
Make / Model
Nortek / Aquadopp II

Dataset Reviews Last processed: 8/22/19, 2:16 PM

QC Check Info
Dep. Preferred Method Stream DD FD SG EG Gaps GD TS Rate (s) Pressure Comp. Time Order Valid Data Missing Data Data Comp. Missing Coords. Review
1 recovered_wfp 151 151 0 0 0 0 1,959,426 70 / 71 Complete
Data Ranges Review Images

Test Notes

All good!

Data Coverage

Deployment: 1
100%

Lat/Lon Differences (km)

Deployment: 1
1 0.00

System Annotations

Metadata Start Date End Date Comment
CP03ISPM-WFP01-01-VEL3DK000
Method: telemetered
Stream: vel3d_k_wfp_stc_instrument
11/11/17, 10:26 PM

During descending profiles, the vertical velocity estimates may be incorrect due to interference with beam 3 measurements arising from the nearby CTD sensor. Users should cross-compare these vertical velocity estimates with those derived from the CTD pressure record to determine profiles of possible concern. Good vertical velocity estimates will closely align with the CTD derived estimates. Regardless, there should be minimal impact on the estimates of the horizontal velocities. However, care should be taken with these estimates to confirm this conclusion.

Id: 1657 By: swhite
Flag: suspect Exclude: No

CP03ISPM-WFP01-01-VEL3DK000
Method: recovered_wfp
Stream: vel3d_k_wfp_instrument
11/11/17, 10:26 PM

During descending profiles, the vertical velocity estimates may be incorrect due to interference with beam 3 measurements arising from the nearby CTD sensor. Users should cross-compare these vertical velocity estimates with those derived from the CTD pressure record to determine profiles of possible concern. Good vertical velocity estimates will closely align with the CTD derived estimates. Regardless, there should be minimal impact on the estimates of the horizontal velocities. However, care should be taken with these estimates to confirm this conclusion.

Id: 1658 By: swhite
Flag: suspect Exclude: No

CP03ISPM-WFP01-01-VEL3DK000
Method: telemetered
Stream: vel3d_k_wfp_stc_instrument
11/11/17, 10:26 PM 4/11/18, 3:06 PM

Deployment 1; During the times indicated by the start and end times of this annotation, the VEL3D instrument on the Profiler contained a firmware bug which caused beam 3 (downward-facing) to be on during ascents, and beam 1 (upward-facing) to be on during descents, instead of vice versa. Therefore the issue of incorrect vertical velocity estimates due to interference with the CTD noted in a previous annotation will affect the ascending profiles rather than the descending profiles.

Id: 1729 By: areed
Flag: suspect Exclude: No

CP03ISPM-WFP01-01-VEL3DK000
Method: recovered_wfp
Stream: vel3d_k_wfp_instrument
11/11/17, 10:26 PM 4/11/18, 3:06 PM

Deployment 1; During the times indicated by the start and end times of this annotation, the VEL3D instrument on the Profiler contained a firmware bug which caused beam 3 (downward-facing) to be on during ascents, and beam 1 (upward-facing) to be on during descents, instead of vice versa. Therefore the issue of incorrect vertical velocity estimates due to interference with the CTD noted in a previous annotation will affect the ascending profiles rather than the descending profiles.

Id: 1730 By: areed
Flag: suspect Exclude: No

CP03ISPM-WFP01-01-VEL3DK000
11/12/17, 12:00 AM 2/14/19, 7:00 PM

UPDATED, 2020-04-15: Corrected algorithm has been uploaded to the system and is active. * The algorithm supplied by the vendor to calculate water velocities is incorrect. Corrected code is currently in review.

Id: 1406 By: swhite

CP03ISPM-WFP01
12/31/19, 7:00 PM 6/13/20, 3:24 PM

Deployment 3: Due to a clock rollover issue, all WFPs have ceased sampling on 1/1/2020. No WFP data are being collected after this date. A resolution is being researched by the vendor.

Id: 1880 By: cdobson

Review Notes

Metadata Start Date End Date Comment
CP03ISPM-WFP01-01-VEL3DK000

Annotation ID 1406 needs to be updated when the code is corrected.

By Lori Garzio, on 8/22/19

New Note