Dissolved Oxygen

Reference Designator
CE09OSSM-RID27-04-DOSTAD000
Review Status
Review Complete
Note
Depth
7m
Class
DOSTA (Dissolved Oxygen Stable Response)
Make / Model
Aanderaa / Optode 4831

Dataset Reviews Last processed: 3/27/19, 7:41 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 0 885,183 1 7 / 7 Complete
2 recovered_host 206 20 0 186 0 0 79,142 2 7 / 7 Complete
3 recovered_host 134 134 0 0 0 0 1,268,819 2 7 / 7 Complete
4 recovered_host 206 206 0 0 0 0 1,966,014 2 7 / 7 Complete
5 recovered_host 178 177 0 0 1 1 1,629,068 2 7 / 7 Complete
6 recovered_host 178 178 0 0 1 1 1,206,497 2 7 / 7 Complete
7 recovered_host 178 55 0 97 1 26 358,534 2 7 / 7 1 Complete
Data Ranges Review Images

Test Notes

  1. missing: ['pressure']

Data Coverage

Deployment: 1234567
28%10%100%100%99%100%31%

Lat/Lon Differences (km)

Deployment: 1234567
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
7 0.100.310.241.100.082.070.00

System Annotations

Metadata Start Date End Date Comment
CE09OSSM-RID27-04-DOSTAD000
4/9/15, 1:30 PM 3/25/18, 9:39 PM

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: 2108 By: wingardc
Flag: suspect Exclude: No

CE09OSSM-RID27-04-DOSTAD000
3/25/18, 9:39 PM

The use of UV lamps has been implemented for biofouling mitigation on this instrument as of 2018-03-26T01:39:00Z.

Id: 2118 By: wingardc

CE09OSSM-RID27-04-DOSTAD000
Method: telemetered
Stream: dosta_abcdjm_dcl_instrument
11/18/18, 7:00 AM

Evidence of increased oxygen during daylight hours suggest a phytoplankton layer has started to develop on the face of the instrument, producing oxygen as a result of photosynthesis. Have doubled the period of time the UV biofouling control lamp is on in order to hopefully stop and reverse the growth.

Id: 1537 By: wingardc
Flag: suspect Exclude: No

CE09OSSM-RID27
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

CE09OSSM
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
CE09OSSM-RID27-04-DOSTAD000

Deployments 1, 2 and 7: Data gap at the end of the deployment is not annotated in the system.

Deployments 1, 2, 4, 5, 6, and 7: Invalid data represent data well above the maximum global ranges 400 µmol/(L,Kg) for dissolved oxygen concentrations or 110 % for oxygen saturation. Biofouling and DO sensor drift are both observed in the data.

By Leila Belabbassi, on 12/17/18

CE09OSSM-RID27-04-DOSTAD000
7/1/16, 12:00 AM 9/23/16, 12:00 AM

suspect data

By Leila Belabbassi, on 2/14/19

CE09OSSM-RID27-04-DOSTAD000
12/1/16, 12:00 AM 4/25/17, 12:00 AM

suspect data

By Leila Belabbassi, on 2/14/19

CE09OSSM-RID27-04-DOSTAD000
8/1/17, 12:00 AM 10/30/17, 12:00 AM

suspect data

By Leila Belabbassi, on 2/14/19

CE09OSSM-RID27-04-DOSTAD000
12/1/17, 12:00 AM 4/2/18, 12:00 AM

suspect data

By Leila Belabbassi, on 2/14/19

CE09OSSM-RID27-04-DOSTAD000
Deployment: 5

A data gap is not annotated in the system ['2017-08-11T20:32:38', '2017-08-13T19:30:16]

By Leila Belabbassi, on 12/18/18

CE09OSSM-RID27-04-DOSTAD000
Deployment: 6

A data gap is not annotated in the system ['2017-10-24T16:33:21', '2017-10-25T17:30:14'].
From previous notes, the gap in the data is due to batteries not recharging sufficiently. To conserve power, the MFN was turned off and the NSIF was reduced to 1 hour communications. The OPTAA is the only instrument on the MFN without internal batteries. See redmine ticket #12980 .

By Leila Belabbassi, on 12/18/18

CE09OSSM-RID27-04-DOSTAD000
Deployment: 7

The NetCDF data file is missing the appropriate variables coordinates. In this case the coordinates are 'int_ctd_pressure', 'lat' and 'lon'.

By Leila Belabbassi, on 12/17/18

CE09OSSM-RID27-04-DOSTAD000
Deployment: 7

A data gap of 26 days is not annotated in the system ['2018-04-29T12:33:33', '2018-05-25T17:30:13']

By Leila Belabbassi, on 12/18/18

New Note