Dissolved Oxygen (130 m)

Reference Designator
GI01SUMO-RII11-02-DOSTAD033
Review Status
Review Complete
Note
Pressure is not available in files. Deployment 4 DO values are anomalously low.
Depth
130m
Class
DOSTA (Dissolved Oxygen Stable Response)
Make / Model
Aanderaa / Optode 4831

Dataset Reviews Last processed: 3/14/19, 3:18 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
2 recovered_host 340 229 0 31 4 80 5,248 3,600 130 / 1 Complete
3 recovered_host 401 214 0 91 2 96 4,812 3,600 130 / 1 Complete
4 telemetered 314 69 0 245 0 0 1,613 3,600 130 / 2 2 1 Complete
Data Ranges Review Images

Test Notes

  1. missing: ['pressure']
  2. no other streams for comparison

Data Coverage

Deployment: 234
22%
67%53%

Lat/Lon Differences (km)

Deployment: 234
2 0.00
3 6.040.00
4 5.601.390.00

Example Composite Data Plot

System Annotations

Metadata Start Date End Date Comment
GI01SUMO
2/14/15, 7:00 PM 8/21/15, 8:00 PM

Deployment 1: Status data sent from the buoy included leak detects in the buoy well, drop in battery voltage, and loss of wind turbine input. Upon recovery, the buoy was primarily intact but several instruments were damaged and/or missing. Ice build-up on the tower is speculated to be the cause for much of the damage. No telemetered or recovered_host data expected. Functional instruments could continue to collect data using internal battery power and storage cards.

Id: 46 By: lgarzio

GI01SUMO-RII11-02-DOSTAD033
8/15/15, 3:22 PM 2/14/19, 7:00 PM

UPDATED 2020-06-19: The data calculation issue was resolved on 15 Feb 2019. * Dissolved Oxygen concentrations are currently not being calculated due to a function error. Issue under investigation (Redmine 13228).

Id: 788 By: lgarzio

GI01SUMO
1/26/16, 7:00 PM 7/18/16, 8:00 PM

Deployment 2: A period of violent weather caused power outages on multiple instruments. No telemetered or recovered_host data expected. Functional instruments could continue to collect data using internal battery power and storage cards. Upon recovery, the buoy well was flooded.

Id: 47 By: lgarzio

GI01SUMO
12/26/16, 7:00 PM 4/6/17, 8:00 PM

Deployment 3: Wind turbines were disabled due to evidence of ice build-up on the surface buoy tower. The platform's battery charge state declined steadily. As of 2017-01-15, all DCLs were shut down and the telemetry schedule was reduced to conserve power. Battery-powered instruments should continue to collect data. UPDATE 2017-04-07: With increasing daylight at this location, sufficient power was generated by solar panels to re-establish limited high-bandwidth telemetry and data transmission. UPDATE: at recovery, wind turbines were missing their hubs and blades, and one solar panel was missing.

Id: 121 By: lgarzio

GI01SUMO
8/5/17, 2:17 PM 6/14/18, 4:02 AM

Deployment 4: at 10:03 UTC on 12 October 2017 the Irminger Sea Surface Mooring stopped all communications. At recovery, the surface buoy was missing. The subsurface portion of the mooring had fallen to the seafloor and was recovered. CTDMOs, CTDBP-F, DOSTA, and ADCP instrumentation were full ocean depth rated and survived, although any recovered data available after 2017-10-12T10:03:00 are suspect. All other instrumentation imploded or flooded. The cause for the loss of the buoy is inconclusive.

Id: 102 By: lgarzio

GI01SUMO
6/19/19, 8:00 PM

Deployment 5: Battery voltage dropped below 24V. All DCLs were turned off. CPM1 was placed on a wake schedule. Data collection and telemetry will be irregular until voltage rebounds.

Id: 1625 By: cdobson

GI01SUMO
Method: telemetered
10/21/19, 8:00 PM

Deployment 6: *UPDATED 2020-04-27: As of 2020-02-21 data for most instruments are being telemetered again (via Iridium). A gap in telemetered data is expected between 2019-10-22 and 2020-02-21 and will not be backfilled but these data will be available upon recovery.*Both fleet broadband units have failed and no more telemetered data is expected at this time. Instruments are believed to be operating as normal and their data will be available upon recovery.

Id: 1743 By: cdobson

Review Notes

Metadata Start Date End Date Comment
GI01SUMO-RII11-02-DOSTAD033

Annotation ID 788 should be removed - Redmine issue 13228 has been resolved.

By Lori Garzio, on 3/14/19

GI01SUMO-RII11-02-DOSTAD033

There are no global ranges in the system for recovered_host dosta_abcdjm_ctdbp_p_dcl_instrument_recovered dosta_analog_tc_oxygen and telemetered dosta_abcdjm_ctdbp_p_dcl_instrument dosta_analog_tc_oxygen.

By Lori Garzio, on 3/14/19

GI01SUMO-RII11-02-DOSTAD033

Pressure is not available in any of the netCDF files (this variable should be a coordinate).

By Lori Garzio, on 3/19/19

GI01SUMO-RII11-02-DOSTAD033
Deployment: 3
12/7/16, 12:00 AM 5/15/17, 12:00 AM

The sensor appeared to fail on 2016-12-07 (likely related to the power issues on the mooring). Data should be annotated and excluding from summary data range.

By Lori Garzio, on 3/15/19

GI01SUMO-RII11-02-DOSTAD033
Deployment: 4
8/5/17, 6:17 PM 10/12/17, 8:03 AM

Deployment 4 dissolved oxygen values are anomalously low (<50 umol L-1). Dissolved oxygen values for deployments 1 and 2 are around 350 - 390 umol L-1. This should be investigated and annotated to alert users of the issue.

By Lori Garzio, on 3/15/19

GI01SUMO
Deployment: 4
10/12/17, 12:00 AM 6/14/18, 8:02 AM

The surface buoy detached from the mooring and the subsurface portion of the mooring fell to the seafloor (see annotation ID 102). Excluding all mooring data for this time range from final statistics.

By Lori Garzio, on 1/15/19

New Note