Reference Designator
Review Status
Review Complete
The OPTAA data were run through the automated QC tests, but were not reviewed visually. Plots are provided in the “Review Images” section only for wavelengths on/near 676nm.
OPTAA (Absorption Spectrophotometer)
Make / Model
WET Labs / AC-S

Dataset Reviews Last processed: 5/30/19, 6:26 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_host 122 122 0 0 0 0 428,259 7 / 1 2 Complete
2 recovered_host 185 185 0 0 0 0 1,854,965 7 / 3 1 2 Complete
3 recovered_host 127 126 0 0 0 0 1,174,306 7 / 3 1 2 Complete
4 recovered_host 216 116 0 99 0 0 1,080,273 7 / 3 1 2 Complete
5 recovered_host 138 72 0 66 0 0 657,407 7 / 3 1 2 Complete
7 recovered_host 177 169 0 8 0 0 1,591,744 7 / 3 1 2 Complete
8 recovered_host 172 21 0 150 0 0 288,968 7 / 1 2 Complete
9 recovered_host 181 181 0 0 0 0 852,426 7 / 3 1 2 Complete
Data Ranges Review Images

Test Notes

  1. no comparison: timestamps do not match
  2. missing: ['pressure']
  3. pass unique test - ascending not tested

Data Coverage

Deployment: 12345789

Lat/Lon Differences (km)

Deployment: 12345789
1 0.00
2 0.000.00

System Annotations

Metadata Start Date End Date Comment
4/17/14, 4:45 PM

Per vendor feedback, the first 1-2 min of each OPTAA instrument sampling period should be considered suspect. Signal drift can occur as the instrument warms up, flushes with seawater, and the filter wheel spins up. Users are encouraged to delete the first minute of data, at a minimum, from each measurement burst and then calculate a median average of the remaining data from the burst before working further with the OPTAA data.

Id: 2094 By: wingardc

4/17/14, 4:45 PM 9/30/16, 8:00 PM

All of the inshore surface moorings suffer from an issue called the 'top of the day problem.' A race condition exists in the CPM firmware when transferring daily log files harvested from the various sub-components in a buoy system (e.g. DCL16, CPM3, DCL35, etc) over the Iridium RUDICS connection. The primary CPM rsync's data files from the various sub-components to a central data directory. The first time a daily file is created/copied into that directory (usually shortly after midnight), a compressed copy of the file is created and that compressed file is queued up in a separate text file for transmission to shore. The transfer routine reads that text file and processes the files from that list in order from top to bottom. Once that compressed file is transferred to shore, no further updates for that file are sent to shore. Meanwhile, the CPM continues to rsync data from the different sub-components, updating the original daily log file. The net result is that data is accumulating in the daily log file for an instrument, but we may see only one record (or none) depending on when the rsync job occurred and the compressed file was created and staged for transfer to shore. This affects telemetered data only.

Id: 868 By: michaesm

7/27/16, 8:00 PM 10/1/16, 8:00 PM

Port was overcurrenting, so mission file changed to disable instrument.

Id: 854 By: michaesm
Flag: not_operational Exclude: No

8/7/16, 8:00 PM 10/3/16, 8:00 PM

Correcting the iridium data telemetry issues, permitting full telemetry of data files, resulting in greater power consumption than anticipated. Result is power level of the battery pack has dropped below operational limits and subsystems can no longer power instruments. Shutting the mooring down, and placing in a low power maintenance mode.

Id: 869 By: michaesm
Flag: not_operational Exclude: No

9/30/16, 8:00 PM 4/30/17, 8:00 PM

Instrument not deployed during Fall 2016 cruise because its refurbishment was not complete before the cruise.

Id: 1523 By: michaesm
Flag: not_operational Exclude: No

12/11/16, 7:00 PM 5/30/17, 8:00 PM

On Monday, Mon Dec 12 15:30:00 2016, stopped receiving any data from CTDBP3. No indication as to possible cause.

Id: 870 By: michaesm
Flag: not_operational Exclude: No

2/5/17, 7:00 PM 4/30/17, 8:00 PM

The buoy and mfn battery voltages have been drawn down faster than expected. Have shutdown further power to DCL16, DCL17, CPM3, and DCL37 (DCL35 failed several weeks ago). This takes the following instruments offline:
CTDBP + DOSTA (probably internally recording)
FLORTNUTNR (probably internally recording)
PHSEN (probably internally recording)
PCO2W (probably internally recording)
VELPT (probably internally recording)

VELPT (probably internally recording)
ADCPT (probably internally recording)
PCO2W (probably internally recording)
PHSEN (probably internally recording)
PRESF (probably internally recording)
VEL3D (probably internally recording)
CTDBP + DOSTA (probably internally recording)
ZPLSC (probably internally recording)

Id: 871 By: michaesm
Flag: not_available Exclude: No

Method: telemetered
1/11/20, 1:45 PM

During a large storm event on 2020-01-11, the surface buoy and NSIF broke free and went adrift. The buoy and NSIF were recovered from the beach the following mooring. No further data will be collected from these systems for the remainder of this deployment.

Id: 1893 By: wingardc
Flag: not_operational Exclude: No

Review Notes

Metadata Start Date End Date Comment

According to Roesler and Barnard (Optical proxy for phytoplankton biomass in the absence of photophysiology: Rethinking the absorption line height, Methods in Oceanography, 2013), “absorption meters are highly prone to biofouling, particularly biofilms which not only attenuate the collimated beam but also impact the scattering properties of the optical surfaces and tubes. In productive coastal waters biofouling can have significant impacts (i.e. 10% of the signal) within one to two weeks”.

By Lori Garzio, on 6/21/19


There is no pressure variable in the .nc files. This should be a coordinate.

By Lori Garzio, on 6/21/19

Deployment: 1

optical_absorption and beam_attenuation are arrays of all fill values. According to the computed_provenance in the provenance.json file, practical salinity and temp are missing from the ctdbp_cdef_dcl_instrument_recovered data stream.

By Lori Garzio, on 6/21/19

Deployment: 7

For deployment 7, 50% and 54% of the values for beam_attenuation and optical_absorption, respectively, are fill values, outliers (+/- 5 SD) or outside of global ranges.

By Lori Garzio, on 6/21/19

Deployment: 8

Missing data from deployment 8 should be annotated.

By Lori Garzio, on 6/21/19

New Note