Spectrophotometer

Reference Designator
CE07SHSM-RID27-01-OPTAAD000
Review Status
Review Complete
Note
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).
Depth
7m
Class
OPTAA (Absorption Spectrophotometer)
Make / Model
WET Labs / AC-S

Dataset Reviews Last processed: 6/26/19, 6:50 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 162 148 0 0 0 0 1,453,174 7 / 1 2 3 Complete
2 recovered_host 214 214 0 0 0 0 2,116,506 7 / 1 2 3 Complete
3 recovered_host 146 146 0 0 0 0 2,275,521 7 / 1 2 3 Complete
4 recovered_host 206 96 0 110 0 0 1,483,891 7 / 1 2 3 Complete
5 recovered_host 179 48 0 129 1 2 722,294 7 / 1 2 3 Complete
6 recovered_host 178 31 0 146 1 1 200,595 7 / 2 3 Complete
7 recovered_host 180 171 0 0 1 1 1,618,195 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']

Data Coverage

Deployment: 1234567
91%100%100%47%27%17%95%

Lat/Lon Differences (km)

Deployment: 1234567
1 0.00
2 0.280.00
3 0.440.220.00
4 0.020.290.460.00
5 0.250.170.210.270.00
6 0.180.460.610.170.400.00
7 0.270.100.170.290.080.440.00

System Annotations

Metadata Start Date End Date Comment
CE07SHSM-RID27-01-OPTAAD000
4/5/15, 1:15 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: 2098 By: wingardc

CE07SHSM
12/1/17, 9:35 AM 3/25/18, 3:09 PM

Data loss due to a power system failure. The mooring stopped receiving power from photo voltaic panel 1 of 4 on Nov-2. By Nov-20, the mooring stopped receiving power from two more solar panels (PV2 & PV4) and one of two wind turbines (WT2). This indicates the Power System Controller (PSC) they connect to is failing. Mooring components will be shut down as the mooring loses the ability to recharge its batteries.

Id: 1237 By: crisien
Flag: not_operational Exclude: No

CE07SHSM-RID27-01-OPTAAD000
10/10/19, 5:30 PM

The OPTAA burst duration was changed from 2 minutes to 4 minutes beginning 2019-10-10T21:30:00 UTC.

Id: 1873 By: wingardc

CE07SHSM-RID27-01-OPTAAD000
Method: telemetered
12/7/19, 1:30 PM

The external temperature sensor has started to show increasing variability during the measurement burst that does not correspond to the data from other, co-located in-situ temperature sensors.

Id: 2051 By: wingardc
Flag: fail Exclude: No

CE07SHSM-RID27-01-OPTAAD000
Method: telemetered
3/30/20, 10:35 AM

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: 2067 By: wingardc
Flag: not_available Exclude: No

CE07SHSM
Method: telemetered
5/13/20, 6:40 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: 2185 By: wingardc
Flag: not_available Exclude: No

Review Notes

Metadata Start Date End Date Comment
CE07SHSM-RID27-01-OPTAAD000

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

CE07SHSM-RID27-01-OPTAAD000

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

By Lori Garzio, on 6/28/19

CE07SHSM-RID27-01-OPTAAD000
Deployment: 4

wavelength_a and wavelength_c are arrays of fill values for this deployment. These variables should contain the measurement wavelengths.

By Lori Garzio, on 6/28/19

New Note