Dissolved Oxygen

Reference Designator
CE01ISSM-MFD37-03-DOSTAD000
Review Status
Review Complete
Note
Depth
25m
Class
DOSTA (Dissolved Oxygen Stable Response)
Make / Model
Aanderaa / Optode 4831

Dataset Reviews Last processed: 3/27/19, 7:26 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_inst 122 122 0 0 0 0 17,427 600 25 / 25 1 1 Complete
2 recovered_inst 185 185 0 0 0 0 26,392 600 25 / 25 2 Complete
3 recovered_inst 127 126 0 0 0 0 12,020 25 / 24 3 2 Complete
4 recovered_inst 216 216 0 0 0 0 20,634 900 25 / 25 1 1 Complete
5 recovered_inst 138 138 0 0 0 0 13,170 900 24 / 24 1 1 Complete
6 recovered_inst 200 128 0 71 0 0 12,074 900 25 / 25 4 2 Complete
7 recovered_inst 177 128 0 49 0 0 12,112 900 25 / 24 5 2 Complete
8 recovered_inst 172 172 0 0 0 0 14,370 25 / 25 2 Complete
9 recovered_inst 181 181 0 0 0 0 17,326 900 25 / 25 2 Complete
Data Ranges Review Images

Test Notes

  1. no other streams for comparison
  2. no comparison: timestamps do not match
  3. fail: data found in another stream (gaps: [1] days: [0])
  4. fail: data found in another stream (gaps: [1] days: [2])
  5. fail: data found in another stream (gaps: [1] days: [50])

Data Coverage

Deployment: 123456789
100%100%99%100%100%64%72%100%100%

Lat/Lon Differences (km)

Deployment: 123456789
1 0.00
2 0.000.00
3 0.080.080.00
4 0.200.200.220.00
5 0.080.080.000.220.00
6 0.180.180.170.090.170.00
7 0.240.240.220.430.220.390.00
8 0.170.170.160.090.160.010.380.00
9 0.170.170.180.370.180.340.100.330.00

Example Composite Data Plot

System Annotations

Metadata Start Date End Date Comment
CE01ISSM-MFD37-03-DOSTAD000
4/17/14, 4:45 PM 4/3/18, 12:22 AM

Prior to the use of UV lamps for biofouling mitigation, this sensor would routinely biofoul after the first 6-8 weeks of a deployment (more common during a spring/summer deployment). Users should carefully examine the data to determine if biofouling has begun to dominate the signal.

Id: 2103 By: wingardc
Flag: suspect Exclude: No

CE01ISSM
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

CE01ISSM
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

CE01ISSM
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

CE01ISSM
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:
DCL16
CTDBP + DOSTA (probably internally recording)
FLORTNUTNR (probably internally recording)
PHSEN (probably internally recording)
PCO2W (probably internally recording)
OPTAA
SPKIR
VELPT (probably internally recording)

DCL17
MOPAK
CTDBP + FLORT
VELPT (probably internally recording)
ACOMM
DCL35
ADCPT (probably internally recording)
PCO2W (probably internally recording)
PHSEN (probably internally recording)
PRESF (probably internally recording)
VEL3D (probably internally recording)
DCL37
CTDBP + DOSTA (probably internally recording)
OPTAA
ZPLSC (probably internally recording)

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

CE01ISSM-MFD37-03-DOSTAD000
Method: telemetered
Stream: dosta_abcdjm_ctdbp_dcl_instrument
10/12/17, 1:50 PM 11/23/17, 11:30 PM

Due to a calibration error, this instrument reported oxygen levels that could be as much as 4.2% too low. Statement from the manufacturer: "A recent routine control check of the O2 reference sensors, used for multipoint calibration of oxygen Optodes, revealed a deviation with respect to accuracy...The revealed deviation in the reference sensors is a 2.7% linear loss (percent of reading) in response to oxygen which means that these optodes will report oxygen levels that could be as much as 4.2% too low (deviation in slope). The 2.7% deviation is in excess of the specified MPC accuracy of ±1.5%."

Id: 215 By: michaesm
Flag: fail Exclude: No

CE01ISSM-MFD37-03-DOSTAD000
4/3/18, 12:22 AM

The use of UV lamps has been implemented for biofouling mitigation on this instrument as of 2018-04-03T04:22:00Z.

Id: 2111 By: wingardc

CE01ISSM-MFD37
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. As a result, telemetry from the data loggers and instrumentation on the seafloor platform has ceased. We expect the system to continue autonomous operations and hope to download data from the data loggers and instruments after the seafloor platform is recoverd in the spring of 2020.

Id: 1896 By: wingardc
Flag: not_available Exclude: No

Review Notes

Metadata Start Date End Date Comment
CE01ISSM-MFD37-03-DOSTAD000
9/1/15, 12:00 AM 10/31/15, 12:00 AM

The DO values at the end of deployment 3 are <50 umol kg-1 and jump to 150-200 umol kg-1 at the beginning of deployment 4. Further analysis should be done using shipboard bottle data, which is outside the scope of this project.

By Lori Garzio, on 3/29/19

CE01ISSM-MFD37-03-DOSTAD000
3/1/18, 12:00 AM 4/15/18, 12:00 AM

The DO values at the end of deployment 8 are <50 umol kg-1 and jump to 150-200 umol kg-1 at the beginning of deployment 9. Further analysis should be done using shipboard bottle data, which is outside the scope of this project.

By Lori Garzio, on 3/29/19

CE01ISSM-MFD37-03-DOSTAD000
Deployment: 5
5/18/16, 3:00 PM 10/2/16, 8:15 PM

Suspect deployment - DO values below zero for a substantial part of the deployment. Issue should be investigated and annotated.

By Lori Garzio, on 3/29/19

CE01ISSM-MFD37-03-DOSTAD000
Deployment: 7
8/24/17, 12:00 AM 10/12/17, 9:50 PM

49 days of data at the end of the deployment are missing from the recovered_inst data stream, but available in the recovered_host and telemetered data streams. These data should be available in the recovered_inst data stream (or annotated if there was an issue with internally recording data).

By Lori Garzio, on 3/28/19

New Note