Dissolved Oxygen

Reference Designator
CE01ISSM-RID16-03-DOSTAD000
Review Status
Review Complete
Note
evidence of biofouling, missing recovered_inst data
Depth
7m
Class
DOSTA (Dissolved Oxygen Stable Response)
Make / Model
Aanderaa / Optode 4831

Dataset Reviews Last processed: 3/27/19, 7:29 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 122 102 0 20 0 0 14,544 600 7 / 7 1 1 Complete
2 recovered_inst 185 65 0 119 0 0 8,922 600 7 / 7 2 3 Complete
3 recovered_inst 127 126 0 0 0 0 12,020 7 / 7 4 3 Complete
4 recovered_inst 216 216 0 0 0 0 20,628 900 7 / 7 4 3 Complete
5 recovered_host 138 83 0 54 0 0 1,859 7 / 7 Complete
6 recovered_inst 200 108 0 92 0 0 9,837 900 7 / 7 5 3 Complete
7 recovered_host 177 64 0 112 0 0 1,531 7 / 7 Complete
8 recovered_inst 172 172 0 0 0 0 16,386 900 7 / 7 Complete
9 recovered_inst 181 181 0 0 0 0 17,326 900 7 / 7 3 Complete
Data Ranges Review Images

Test Notes

  1. no other streams for comparison
  2. fail: data found in another stream (gaps: [1] days: [121])
  3. no comparison: timestamps do not match
  4. fail: data found in another stream (gaps: [1] days: [0])
  5. fail: data found in another stream (gaps: [1] days: [18])

Data Coverage

Deployment: 123456789
60%36%
84%35%99%100%54%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-RID16-03-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: 2102 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-RID16-03-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: 2110 By: wingardc

CE01ISSM-RID16-03-DOSTAD000
Method: telemetered
Stream: dosta_abcdjm_ctdbp_dcl_instrument
6/8/18, 8:00 PM 8/17/18, 2:30 AM

The dissolved oxygen data suddenly flat-lined late on the 27th of June. While oxygen concentrations are currently low in the area, the values reported on the NSIF do not correspond to those on the MFN or the nearby, co-located CSPP currently deployed. A review of the data would suggest the issue started on or around June 9th. Data from that date through the remainder of Deployment 09 should be considered suspect.

Id: 1471 By: wingardc
Flag: suspect Exclude: No

CE01ISSM-RID16
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
CE01ISSM-RID16-03-DOSTAD000

Dissolved oxygen values are outside of global ranges for portions of all deployments.

By Lori Garzio, on 3/29/19

CE01ISSM-RID16-03-DOSTAD000
9/15/15, 12:00 AM 11/1/15, 12:00 AM

The DO values at the end of deployment 3 are <50 umol kg-1 and jump to ~250 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-RID16-03-DOSTAD000
Deployment: 1
7/27/14, 9:50 PM 8/16/14, 10:30 PM

The missing data at the end of deployment 1 should be annotated.

By Lori Garzio, on 3/29/19

CE01ISSM-RID16-03-DOSTAD000
Deployment: 2
12/13/14, 12:00 AM 4/12/15, 12:00 AM

121 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). It appears that the instrument was having issues (values <0) so the data from that time range are potentially suspect.

By Lori Garzio, on 3/29/19

CE01ISSM-RID16-03-DOSTAD000
Deployment: 5

Deployment 5 should be annotated to indicate why no recovered_inst data are available. According to the ingest csv, "No Data on instrument. Did not start logging."

By Lori Garzio, on 3/29/19

CE01ISSM-RID16-03-DOSTAD000
Deployment: 6
12/1/16, 12:00 AM 4/17/17, 7:45 PM

Daily DO spikes starting in December 2016 for this deployment suggest biofouling. Excluding from summary data ranges.

By Lori Garzio, on 3/29/19

CE01ISSM-RID16-03-DOSTAD000
Deployment: 6
1/15/17, 12:00 AM 2/1/17, 12:00 AM

18 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 3/29/19

CE01ISSM-RID16-03-DOSTAD000
Deployment: 7

Deployment 7 recovered_inst data should be ingested, or the dataset should be annotated to indicate why no recovered_inst data are available. The ingest csv indicates that the recovered_inst data are available, but the line is commented out.

By Lori Garzio, on 3/29/19

CE01ISSM-RID16-03-DOSTAD000
Deployment: 8
12/1/17, 12:00 AM 4/1/18, 12:00 AM

Daily DO spikes starting in December 2017 for this deployment suggest biofouling. Excluding from summary data ranges.

By Lori Garzio, on 3/29/19

CE01ISSM-RID16-03-DOSTAD000
Deployment: 9
6/8/18, 8:00 PM 9/30/18, 3:47 PM

As annotation ID 1471 suggests, dissolved oxygen for the remainder of the deployment are suspect. Excluding from summary data ranges.

By Lori Garzio, on 3/29/19

New Note