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 (if the wavelengths are defined in the .nc files).
OPTAA (Absorption Spectrophotometer)
Make / Model
WET Labs / AC-S

Dataset Reviews Last processed: 6/26/19, 6:52 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 170 47 0 122 0 0 457,745 7 / 1 2 3 Complete
2 recovered_host 206 20 0 186 0 0 108,468 7 / 2 3 Complete
3 recovered_host 134 134 0 0 0 0 2,009,071 7 / 1 2 3 Complete
4 telemetered 206 206 0 0 0 0 3,236,035 7 / 1 4 4 3 Complete
5 recovered_host 178 8 0 166 3 6 16,173 7 / 2 3 Complete
6 recovered_host 178 177 0 0 1 1 2,756,929 7 / 1 2 3 Complete
Data Ranges Review Images

Test Notes

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

Data Coverage

Deployment: 123456

Lat/Lon Differences (km)

Deployment: 123456
1 0.00
2 0.320.00
3 0.230.540.00
4 1.121.400.900.00
5 0.130.380.181.020.00
6 2.102.361.870.971.990.00

System Annotations

Metadata Start Date End Date Comment
4/9/15, 1:30 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: 2100 By: wingardc

9/4/16, 8:00 PM 9/21/16, 8:00 PM

OPTAA c-channel lamp appears to have burned out. Data is no longer valid.

Id: 934 By: michaesm
Flag: not_operational Exclude: No

10/11/19, 7:30 PM

The OPTAA burst duration was changed from 2 minutes to 4 minutes beginning 2019-10-11T23:30:00 UTC.

Id: 1875 By: wingardc

Method: telemetered
3/30/20, 5:35 PM

Due to a change in the program telemetry systems, data from this sensor will not be telemetered to shore. The data is still being collected and will be available upon mooring recovery.

Id: 2068 By: wingardc
Flag: not_available Exclude: No

Method: telemetered
4/27/20, 3:40 PM

We are experiencing an intermittent failure of communication between the systems on the NSIF and the buoy. While the systems on the NSIF are operating, due to a change in the telemetry system, only a finite backlog of data is telemetered to shore. As a result, when communications are restored, some of the data backlog may be missing and there may be gaps in the record.

Id: 2184 By: wingardc

Method: telemetered
5/9/20, 8:40 PM 5/10/20, 8:00 PM

Due to a bug in the mooring telemetry system, data during this time range was not telemetered to shore. It was recorded on the mooring and instruments and will be available in the recovered data streams.

Id: 2182 By: wingardc
Flag: not_available 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 6/28/19


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

By Lori Garzio, on 6/28/19

Deployment: 4

There are no recovered_host data available for download for this deployment. According to the ingest csv, the raw data files are missing. These files should be uploaded and ingested, or the dataset should be annotated.

By Lori Garzio, on 6/28/19

New Note