Spectrophotometer

Reference Designator
CE07SHSM-MFD37-01-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
87m
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 3 0 159 0 0 15,262 87 / 1 1 2 Complete
2 recovered_host / Complete
3 recovered_host 146 99 0 45 1 1 1,498,060 87 / 3 4 2 Complete
5 recovered_host 179 57 0 98 2 11 831,850 89 / 3 4 2 Complete
Data Ranges Review Images

Test Notes

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

Data Coverage

Deployment: 1235
2%68%32%

Lat/Lon Differences (km)

Deployment: 1235
1 0.00
3 0.440.00
5 0.250.210.00

System Annotations

Metadata Start Date End Date Comment
CE07SHSM-MFD37-01-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: 2099 By: wingardc

CE07SHSM-MFD37
8/11/16, 8:00 PM 9/26/16, 8:00 PM

The Power System Controller on CE07SHSM indicates the power connection to the MFN short-circuited on 2016-08-12 at 23:30 UTC. Failure is indicated by decreased voltage (70 VDC instead of 380 VDC) and increased current draw (1900 mA instead of 120 mA) to the CVT. This symptom is indicative of a short-circuit in the power lines of either the stretch hose (most likely) or EM Chain. In the past, this failure has been associated with a failed stretch hose. Have disabled all further power and communications with the MFN. This means no more telemetered data from: ADCPT2, VEL3D, CTDBP2 + DOSTA, PRESF, PCO2W, PHSEN2, OPTAA2, ZPLSC

Id: 917 By: michaesm
Flag: not_available Exclude: No

CE07SHSM-MFD37-01-OPTAAD000
8/11/16, 8:00 PM 9/26/16, 8:00 PM

The Power System Controller on CE07SHSM indicates the power connection to the MFN short-circuited on 2016-08-12 at 23:30 UTC. Failure is indicated by decreased voltage (70 VDC instead of 380 VDC) and increased current draw (1900 mA instead of 120 mA) to the CVT. This symptom is indicative of a short-circuit in the power lines of either the stretch hose (most likely) or EM Chain. In the past, this failure has been associated with a failed stretch hose. Have disabled all further power and communications with the MFN. Therefore, there is no telemetered data for this reference designator.

Id: 918 By: michaesm
Flag: not_available Exclude: No

CE07SHSM-MFD37-01-OPTAAD000
9/19/16, 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: 919 By: michaesm
Flag: not_operational Exclude: No

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-MFD37
Method: telemetered
5/25/19, 8:40 AM 10/10/19, 5:07 PM

The high voltage power supply providing power to the seafloor dataloggers and instrumentation failed for reasons unknown at this time. No further telemetered data will be available for this deployment.

Id: 1691 By: wingardc
Flag: not_operational Exclude: No

CE07SHSM-MFD37
Method: recovered-host
5/25/19, 8:40 AM 10/10/19, 5:07 PM

The high voltage power supply providing power to the seafloor dataloggers and instrumentation failed for reasons unknown at this time. No further telemetered data will be available for this deployment.

Id: 1750 By: wingardc
Flag: not_operational Exclude: No

CE07SHSM-MFD37-01-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: 1874 By: wingardc

CE07SHSM-MFD37
Method: telemetered
11/20/19, 1:45 PM 12/4/19, 10:20 PM

Due to reduced power on the mooring (limited recharging of the batteries with light winds and low levels of sunlight), we have had to reduce the operating schedule of the seafloor platform. Normally we run the system hourly, but have reduced that schedule to every 3 hours.

Id: 1833 By: wingardc

CE07SHSM-MFD37
Method: telemetered
12/25/19, 11:45 PM

Power to the seafloor sensors failed. With the exception of the VEL3D and OPTAA, the sensors on the seafloor platform should continue to autonomously sample for the remainder of deployment. Until we recover and redeploy the mooring in the spring of 2020, no further telemetered data will be available from the seafloor sensors.

Id: 1870 By: wingardc
Flag: not_operational 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-MFD37-01-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-MFD37-01-OPTAAD000

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

By Lori Garzio, on 6/28/19

CE07SHSM-MFD37-01-OPTAAD000
Deployment: 2

There are no data available for download for this deployment. According to the ingest csv, "Communications with MFN failed immediately upon deployment, no data will be available from this instrument". This should be annotated in the system.

By Lori Garzio, on 6/28/19

New Note